7th Generation Intel® Processor

Families for S Platforms and Intel®

Core™ X-Series Processor Family
Datasheet, Volume 1 of 2

Supporting 7th Generation Intel® Core™ Processor Families, Intel®

Pentium® Processors and Intel® Celeron® Processors Family for S
Platforms Intel® Celeron® Processors and Intel® Core™ X-Series
Processor Platforms, formerly known as Kaby Lake

February 2022
Revision 005

Document Number: 335195-005

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2 Datasheet, Volume 1 of 2
Contents
1 Introduction ............................................................................................................ 11
1.1 Supported Technologies ..................................................................................... 13
1.2 Power Management Support ............................................................................... 13
1.2.1 Processor Core Power Management........................................................... 13
1.2.2 System Power Management ..................................................................... 13
1.2.3 Memory Controller Power Management...................................................... 13
1.2.4 Processor Graphics Power Management ..................................................... 14
1.2.4.1 Memory Power Savings Technologies ........................................... 14
1.2.4.2 Display Power Savings Technologies ............................................ 14
1.2.4.3 Graphics Core Power Savings Technologies................................... 14
1.3 Thermal Management Support ............................................................................ 14
1.4 Package Support ............................................................................................... 15
1.5 Processor Testability .......................................................................................... 15
1.6 Operating Systems Support ................................................................................ 15
1.7 Terminology ..................................................................................................... 15
1.8 Related Documents ........................................................................................... 17
2 Interfaces................................................................................................................ 20
2.1 System Memory Interface .................................................................................. 20
2.1.1 System Memory Technology Supported ..................................................... 20
2.1.1.1 DDR3L/-RS Supported Memory Modules and Devices ..................... 21
2.1.1.2 DDR4 Supported Memory Modules and Devices............................. 22
2.1.2 System Memory Timing Support............................................................... 23
2.1.3 System Memory Organization Modes......................................................... 24
2.1.4 System Memory Frequency...................................................................... 25
2.1.5 Technology Enhancements of Intel® Fast Memory Access (Intel® FMA).......... 25
2.1.6 Data Scrambling .................................................................................... 26
2.1.7 DDR I/O Interleaving .............................................................................. 26
2.1.8 Data Swapping ...................................................................................... 27
2.1.9 DRAM Clock Generation........................................................................... 27
2.1.10 DRAM Reference Voltage Generation ......................................................... 27
2.1.11 Data Swizzling ....................................................................................... 27
2.2 PCI Express* Graphics Interface (PEG)................................................................. 27
2.2.1 PCI Express* Support ............................................................................. 27
2.2.2 PCI Express* Architecture ....................................................................... 29
2.2.3 PCI Express* Configuration Mechanism ..................................................... 30
2.2.4 PCI Express* Equalization Methodology ..................................................... 30
2.3 Direct Media Interface (DMI)............................................................................... 31
2.3.1 DMI Error Flow....................................................................................... 31
2.3.2 DMI Link Down ...................................................................................... 31
2.4 Processor Graphics ............................................................................................ 31
2.4.1 API Support (Windows*) ......................................................................... 32
2.4.2 Media Support (Intel® QuickSync and Clear Video Technology HD) .............. 32
2.4.2.1 Hardware Accelerated Video Decode ............................................ 32
2.4.2.2 Hardware Accelerated Video Encode ............................................ 33
2.4.2.3 Hardware Accelerated Video Processing ....................................... 34
2.4.2.4 Hardware Accelerated Transcoding .............................................. 34
2.4.3 Camera Pipe Support .............................................................................. 34
2.4.4 Switchable/Hybrid Graphics ..................................................................... 35
2.4.5 Gen 9 LP Video Analytics ......................................................................... 35
2.4.6 Gen 9 LP (9th Generation Low Power) Block Diagram .................................. 36

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 2.4.7 GT2 Graphic Frequency ...........................................................................36
2.5 Display Interfaces ..............................................................................................37
2.5.1 DisplayPort* ..........................................................................................40
2.5.2 High-Definition Multimedia Interface (HDMI*).............................................41
2.5.3 Digital Video Interface (DVI) ....................................................................42
2.5.4 embedded DisplayPort* (eDP*) ................................................................42
2.5.5 Integrated Audio ....................................................................................42
2.5.6 Multiple Display Configurations (Dual Channel DDR) ....................................43
2.5.7 Multiple Display Configurations (Single Channel DDR) ..................................44
2.5.8 High-bandwidth Digital Content Protection (HDCP) ......................................44
2.5.9 Display Link Data Rate Support ................................................................45
2.5.10 Display Bit Per Pixel (BPP) Support............................................................46
2.5.11 Display Resolution per Link Width .............................................................46
2.6 Platform Environmental Control Interface (PECI) ....................................................46
2.6.1 PECI Bus Architecture..............................................................................46
3 Technologies............................................................................................................49
3.1 Intel® Virtualization Technology (Intel® VT) ..........................................................49
3.1.1 Intel® Virtualization Technology (Intel® VT) for IA-32, Intel® 64 and Intel®
Architecture (Intel® VT-X)........................................................................49
3.1.2 Intel® Virtualization Technology (Intel® VT) for Directed I/O (Intel® VT-d).....51
3.2 Security Technologies.........................................................................................54
3.2.1 Intel® Trusted Execution Technology (Intel® TXT) .......................................54
3.2.2 Intel® Advanced Encryption Standard New Instructions (Intel® AES-NI) .........55
3.2.3 PCLMULQDQ (Perform Carry-Less Multiplication Quad word) Instruction .........55
3.2.4 Intel® Secure Key ...................................................................................55
3.2.5 Execute Disable Bit .................................................................................56
3.2.6 Boot Guard Technology ...........................................................................56
3.2.7 Intel® Supervisor Mode Execution Protection (SMEP) ...................................56
3.2.8 Intel® Supervisor Mode Access Protection (SMAP) .......................................56
3.2.9 Intel® Memory Protection Extensions (Intel® MPX)......................................57
3.2.10 Intel® Software Guard Extensions (Intel® SGX) ..........................................57
3.2.11 Intel® Virtualization Technology (Intel® VT) for Directed I/O (Intel® VT-d).....58
3.3 Power and Performance Technologies ...................................................................58
3.3.1 Intel® Hyper-Threading Technology (Intel® HT Technology) .........................58
3.3.2 Intel® Turbo Boost Technology 2.0............................................................58
3.3.2.1 Intel® Turbo Boost Technology 2.0 Frequency ...............................58
3.3.3 Intel® Advanced Vector Extensions 2 (Intel® AVX2) ....................................59
3.3.4 Intel® 64 Architecture x2APIC ..................................................................59
3.3.5 Power Aware Interrupt Routing (PAIR).......................................................60
3.3.6 Intel® Transactional Synchronization Extensions (Intel® TSX-NI) ..................61
3.4 Debug Technologies ...........................................................................................61
3.4.1 Intel® Processor Trace ............................................................................61
4 Power Management .................................................................................................62
4.1 Advanced Configuration and Power Interface (ACPI) States Supported ......................64
4.2 Processor IA Core Power Management ..................................................................66
4.2.1 OS/HW controlled P-states .......................................................................66
4.2.1.1 Enhanced Intel® SpeedStep® Technology .....................................66
4.2.1.2 Intel® Speed Shift Technology ....................................................67
4.2.2 Low-Power Idle States.............................................................................67
4.2.3 Requesting Low-Power Idle States ............................................................68
4.2.4 Processor IA Core C-State Rules ...............................................................68
4.2.5 Package C-States ...................................................................................70
4.2.6 Package C-States and Display Resolutions..................................................72
4.3 Integrated Memory Controller (IMC) Power Management.........................................74

4 Datasheet, Volume 1 of 2
 4.3.1 Disabling Unused System Memory Outputs ................................................ 74
4.3.2 DRAM Power Management and Initialization ............................................... 74
4.3.2.1 Initialization Role of CKE ............................................................ 75
4.3.2.2 Conditional Self-Refresh............................................................. 75
4.3.2.3 Dynamic Power-Down................................................................ 76
4.3.2.4 DRAM I/O Power Management .................................................... 76
4.3.3 DDR Electrical Power Gating (EPG) ........................................................... 76
4.3.4 Power Training....................................................................................... 77
4.4 PCI Express* Power Management ........................................................................ 77
4.5 Direct Media Interface (DMI) Power Management .................................................. 77
4.6 Processor Graphics Power Management ................................................................ 78
4.6.1 Memory Power Savings Technologies ........................................................ 78
4.6.1.1 Intel® Rapid Memory Power Management (Intel® RMPM) ............... 78
4.6.1.2 Intel® Smart 2D Display Technology (Intel® S2DDT) ..................... 78
4.6.2 Display Power Savings Technologies ......................................................... 78
4.6.2.1 Intel® (Seamless & Static) Display Refresh Rate
Switching (DRRS) with eDP* Port ................................................ 78
4.6.2.2 Intel® Automatic Display Brightness ............................................ 78
4.6.2.3 Smooth Brightness.................................................................... 79
4.6.2.4 Intel® Display Power Saving Technology (Intel® DPST) 6.0 ............ 79
4.6.2.5 Panel Self-Refresh 2 (PSR 2) ...................................................... 79
4.6.2.6 Low-Power Single Pipe (LPSP) .................................................... 79
4.6.3 Processor Graphics Core Power Savings Technologies .................................. 80
4.6.3.1 Intel® Graphics Dynamic Frequency ............................................ 80
4.6.3.2 Intel® Graphics Render Standby Technology (Intel® GRST) ............ 80
4.6.3.3 Dynamic FPS (DFPS) ................................................................. 80
4.7 Voltage Optimization.......................................................................................... 80
5 Thermal Management .............................................................................................. 81
5.1 Processor Thermal Management .......................................................................... 81
5.1.1 Thermal Considerations........................................................................... 81
5.1.2 Intel® Turbo Boost Technology 2.0 Power Monitoring .................................. 82
5.1.3 Intel® Turbo Boost Technology 2.0 Power Control ....................................... 82
5.1.3.1 Package Power Control .............................................................. 82
5.1.3.2 Platform Power Control .............................................................. 83
5.1.3.3 Turbo Time Parameter (Tau) ...................................................... 84
5.1.4 Configurable TDP (cTDP) and Low-Power Mode........................................... 84
5.1.4.1 Configurable TDP ...................................................................... 84
5.1.4.2 Low-Power Mode ...................................................................... 85
5.1.5 Thermal Management Features ................................................................ 85
5.1.5.1 Adaptive Thermal Monitor .......................................................... 85
5.1.5.2 Digital Thermal Sensor .............................................................. 87
5.1.5.3 PROCHOT# Signal..................................................................... 88
5.1.5.4 Bi-Directional PROCHOT# .......................................................... 89
5.1.5.5 Voltage Regulator Protection using PROCHOT# ............................. 89
5.1.5.6 Thermal Solution Design and PROCHOT# Behavior ........................ 89
5.1.5.7 Low-Power States and PROCHOT# Behavior ................................. 90
5.1.5.8 THERMTRIP# Signal .................................................................. 90
5.1.5.9 Critical Temperature Detection ................................................... 90
5.1.5.10 On-Demand Mode ..................................................................... 90
5.1.5.11 MSR Based On-Demand Mode..................................................... 90
5.1.5.12 I/O Emulation-Based On-Demand Mode ....................................... 91
5.1.6 Intel® Memory Thermal Management ........................................................ 91
5.1.7 Scenario Design Power (SDP)................................................................... 91
5.2 Thermal and Power Specifications........................................................................ 92
5.2.1 S-Processor Line Thermal and Power Specifications..................................... 93
5.2.1.1 Thermal Profile for PCG 2015D Processor ..................................... 96
5.2.1.2 Thermal Profile for PCG 2015C Processor ..................................... 97

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 5.2.1.3 Thermal Profile for PCG 2015B Processor ......................................98
5.2.1.4 Thermal Profile for PCG 2015A Processor ......................................99
5.2.1.5 Thermal Metrology ........................................................................ 100
5.2.1.6 Fan Speed Control Scheme with Digital Thermal Sensor (DTS) 1.1 . 100
5.2.1.7 Fan Speed Control Scheme with Digital Thermal Sensor (DTS) 2.0 . 102
5.3 ..................................................................................................................... 103
6 Signal Description .................................................................................................. 105
6.1 System Memory Interface ................................................................................. 105
6.2 PCI Express* Graphics (PEG) Signals.................................................................. 108
6.3 Direct Media Interface (DMI) Signals .................................................................. 108
6.4 Reset and Miscellaneous Signals ........................................................................ 109
6.5 embedded DisplayPort* (eDP*) Signals............................................................... 109
6.6 Display Interface Signals .................................................................................. 110
6.7 Processor Clocking Signals ................................................................................ 110
6.8 Testability Signals............................................................................................ 111
6.9 Error and Thermal Protection Signals.................................................................. 111
6.10 Power Sequencing Signals................................................................................. 112
6.11 Processor Power Rails....................................................................................... 113
6.12 Ground, Reserved and Non-Critical to Function (NCTF) Signals............................... 114
6.13 Processor Internal Pull-Up / Pull-Down Terminations............................................. 114
7 Electrical Specifications ......................................................................................... 115
7.1 Processor Power Rails....................................................................................... 115
7.1.1 Power and Ground Pins.......................................................................... 115
7.1.2 VCC Voltage Identification (VID).............................................................. 115
7.2 DC Specifications ............................................................................................. 116
7.2.1 Processor Power Rails DC Specifications ................................................... 116
7.2.1.1 Vcc DC Specifications............................................................... 116
7.2.1.2 VccGT DC Specifications............................................................ 118
7.2.1.3 VDDQ DC Specifications ........................................................... 120
7.2.1.4 VccSA DC Specifications ........................................................... 120
7.2.1.5 VccIO DC Specifications ........................................................... 121
7.2.1.6 VccST DC Specifications ........................................................... 121
7.2.1.7 VccPLL DC Specifications .......................................................... 121
7.2.2 Processor Interfaces DC Specifications..................................................... 122
7.2.2.1 DDR3L/-RS DC Specifications.................................................... 122
7.2.2.2 DDR4 DC Specifications............................................................ 124
7.2.2.3 PCI Express* Graphics (PEG) DC Specifications ........................... 124
7.2.2.4 Digital Display Interface (DDI) DC Specifications ......................... 126
7.2.2.5 embedded DisplayPort* (eDP*) DC Specification.......................... 126
7.2.2.6 CMOS DC Specifications ........................................................... 126
7.2.2.7 GTL and OD DC Specifications ................................................... 127
7.2.2.8 PECI DC Characteristics............................................................ 127
8 Package Mechanical Specifications......................................................................... 130
8.1 Package Mechanical Attributes ........................................................................... 130
8.2 Package Storage Specifications.......................................................................... 130

6 Datasheet, Volume 1 of 2
Figures
1-1 S-Processor Line Platforms ...................................................................................... 12
2-1 Intel® Flex Memory Technology Operations ............................................................... 24
2-2 Interleave (IL) and Non-Interleave (NIL) Modes Mapping............................................. 27
2-3 PCI Express* Related Register Structures in the Processor ........................................... 30
2-4 Video Analytics Common Use Cases .......................................................................... 35
2-5 Gen 9 LP Block Diagram .......................................................................................... 36
2-6 Processor Display Architecture (with 3 DDI ports as an example) .................................. 40
2-7 DisplayPort* Overview ............................................................................................ 41
2-8 HDMI* Overview .................................................................................................... 42
2-9 Example for PECI Host-Clients Connection ................................................................. 47
2-10 Example for PECI EC Connection .............................................................................. 48
3-1 Device to Domain Mapping Structures ....................................................................... 52
4-1 Processor Power States ........................................................................................... 63
4-2 Processor Package and IA Core C-States ................................................................... 64
4-3 Idle Power Management Breakdown of the Processor IA Cores ..................................... 67
4-4 Package C-State Entry and Exit ................................................................................ 71
5-1 Package Power Control............................................................................................ 83
5-2 Thermal Test Vehicle Thermal Profile for PCG 2015D Processor..................................... 96
5-3 Thermal Test Vehicle Thermal Profile for PCG 2015C Processor ..................................... 97
5-4 Thermal Test Vehicle Thermal Profile for PCG 2015B Processor ..................................... 98
5-5 Thermal Test Vehicle Thermal Profile for PCG 2015A Processor ..................................... 99
5-6 Thermal Test Vehicle (TTV) Case Temperature (TCASE) Measurement Location ............ 100
5-7 Digital Thermal Sensor (DTS) 1.1 Definition Points.................................................... 101
5-8 Digital Thermal Sensor (DTS) 1.1 Definition Points.................................................... 103
7-1 Input Device Hysteresis ........................................................................................ 128

Tables
1-1 Processor Lines ...................................................................................................... 11
1-2 Terminology .......................................................................................................... 15
1-3 Related Documents ................................................................................................ 17
2-1 Processor DRAM Support Matrix ............................................................................... 20
2-2 Supported DDR3L/-RS Non-ECC UDIMM Module Configurations
(S-Processor Line).................................................................................................. 21
2-3 Supported DDR3L/-RS ECC UDIMM Module Configurations
(S-Processor Line).................................................................................................. 21
2-4 Supported DDR3L/-RS Non-ECC SO-DIMM Module Configurations
(S-Processor Lines) ................................................................................................ 21
2-5 Supported DDR4 Non-ECC UDIMM Module Configurations
(S-Processor Lines) ................................................................................................ 22
2-6 Supported DDR4 ECC UDIMM Module Configurations
(S-Processor Lines) ................................................................................................ 22
2-7 Supported DDR4 Non-ECC SODIMM Module Configurations
(S-Processor Lines) ................................................................................................ 22
2-8 Supported DDR4 ECC SODIMM Module Configurations
(S-Processor Lines) ................................................................................................ 23
2-9 DRAM System Memory Timing Support ..................................................................... 23
2-10 Interleave (IL) and Non-Interleave (NIL) Modes Pin Mapping........................................ 26
2-11 PCI Express* Bifurcation and Lane Reversal Mapping .................................................. 28
2-12 PCI Express* Maximum Transfer Rates and Theoretical Bandwidth ................................ 29
2-13 Hardware Accelerated Video Decoding....................................................................... 33
2-14 Hardware Accelerated Video Encode ......................................................................... 33

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 2-15 Switchable/Hybrid Graphics Support..........................................................................35
2-16 GT2 Graphics Frequency (S-Processor Line) ...............................................................36
2-17 VGA and Embedded DisplayPort* (eDP*) Bifurcation Summary .....................................37
2-18 Embedded DisplayPort (eDP*)/DDI Ports Availability ...................................................37
2-19 Display Technologies Support ...................................................................................38
2-20 Display Resolutions and Link Bandwidth for Multi-Stream Transport Calculations ............38
2-21 Processor Supported Audio Formats over HDMI and DisplayPort* ..................................43
2-22 Maximum Display Resolution ....................................................................................43
2-23 S-Processor Line Display Resolution Configuration ......................................................44
2-24 S-Processor Line Display Resolution Configuration (DP@30 Hz) ....................................44
2-25 HDCP Display supported Implications Table ................................................................44
2-26 Display Link Data Rate Support ................................................................................45
2-27 Display Resolution and Link Rate Support ..................................................................45
2-28 Display Bit Per Pixel (BPP) Support...........................................................................46
2-29 Supported Resolutions1 for HBR (2.7 Gbps) by Link Width ..........................................46
2-30 Supported Resolutions1 for HBR2 (5.4 Gbps) by Link Width.........................................46
4-1 System States........................................................................................................64
4-2 Processor IA Core / Package State Support ................................................................65
4-3 Integrated Memory Controller (IMC) States ................................................................65
4-4 PCI Express* Link States .........................................................................................65
4-5 Direct Media Interface (DMI) States ..........................................................................65
4-6 G, S, and C Interface State Combinations ..................................................................66
4-7 Deepest Package C-State Available ...........................................................................73
4-8 Targeted Memory State Conditions............................................................................76
4-9 Package C-States with PCIe* Link States dependencies ...............................................77
5-1 Configurable TDP Modes ..........................................................................................84
5-2 TDP Specifications (S-Processor Line) ........................................................................93
5-3 Package Turbo Specifications (S-Processor Line) .........................................................93
5-4 Low Power and TTV Specifications (S-Processor Line) ..................................................94
5-5 TCONTROL Offset Configuration (S-Processor Line) ........................................................95
5-6 Thermal Test Vehicle Thermal Profile for PCG 2015D Processor .....................................96
5-7 Thermal Test Vehicle Thermal Profile for PCG 2015C Processor .....................................97
5-8 Thermal Test Vehicle Thermal Profile for PCG 2015B Processor .....................................98
5-9 Thermal Test Vehicle Thermal Profile for PCG 2015A Processor .....................................99
5-10 Digital Thermal Sensor (DTS) 1.1 Thermal Solution Performance Above TCONTROL .......... 102
5-11 Thermal Margin Slope ........................................................................................... 103
6-1 Signal Tables Terminology ..................................................................................... 105
6-2 DDR3L/-RS Memory Interface ................................................................................ 105
6-3 DDR4 Memory Interface ........................................................................................ 107
6-4 System Memory Reference and Compensation Signals ............................................... 108
6-5 PCI Express* Interface .......................................................................................... 108
6-6 DMI Interface Signals............................................................................................ 108
6-7 Reset and Miscellaneous Signals ............................................................................. 109
6-8 embedded DisplayPort* Signals .............................................................................. 109
6-9 Display Interface Signals ....................................................................................... 110
6-10 Processor Clocking Signals ..................................................................................... 110
6-11 Testability Signals................................................................................................. 111
6-12 Error and Thermal Protection Signals....................................................................... 111
6-13 Power Sequencing Signals ..................................................................................... 112
6-14 Processor Power Rails Signals................................................................................. 113
6-15 GND, RSVD, and NCTF Signals ............................................................................... 114
6-16 Processor Internal Pull-Up / Pull-Down Terminations.................................................. 114
7-1 Processor Power Rails............................................................................................ 115
7-2 Processor IA core (Vcc) Active and Idle Mode DC Voltage and Current Specifications...... 116
7-3 Processor Graphics (VccGT) Supply DC Voltage and Current Specifications .................... 118

8 Datasheet, Volume 1 of 2
 7-4 Memory Controller (VDDQ) Supply DC Voltage and Current Specifications .................... 120
7-5 System Agent (VccSA) Supply DC Voltage and Current Specifications .......................... 120
7-6 Processor I/O (VccIO) Supply DC Voltage and Current Specifications ........................... 121
7-7 Vcc Sustain (VccST) Supply DC Voltage and Current Specifications ............................. 121
7-8 Processor PLL (VccPLL) Supply DC Voltage and Current Specifications ......................... 121
7-9 Processor PLL_OC (VccPLL_OC) Supply DC Voltage and Current Specifications.............. 122
7-10 DDR3L/-RS Signal Group DC Specifications .............................................................. 122
7-11 DDR4 Signal Group DC Specifications...................................................................... 124
7-12 PCI Express* Graphics (PEG) Group DC Specifications ............................................... 124
7-13 Digital Display Interface Group DC Specifications (DP/HDMI)...................................... 126
7-14 embedded DisplayPort* (eDP*) Group DC Specifications............................................ 126
7-15 CMOS Signal Group DC Specifications ..................................................................... 126
7-16 GTL Signal Group and Open Drain Signal Group DC Specifications............................... 127
7-17 PECI DC Electrical Limits ....................................................................................... 127
8-1 Package Mechanical Attributes ............................................................................... 130
8-2 Package Storage Specifications .............................................................................. 130

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Revision History

Revision
Description Revision Date
Number

001 • Initial release January 2017

002 • Added Section 1.6, “Operating Systems Support” August 2018
003 • Updated document title December 2018
004 • Updated Section 7.1.2, “VCC Voltage Identification (VID)” August 2020
005 • Added note in Section 1.6, “Operating Systems Support” February 2022

10 Datasheet, Volume 1 of 2
1 Introduction

The 7th Generation Intel® Core™ processor, Intel® Pentium® processor, Intel®
Celeron® processor families are 64-bit, multi-core processors built on 14-nanometer
process technology.

The S-Processor Line processors are offered in a 2-Chip Platform. The S-Processor Line
is connected to a discrete Intel® 200 Series Chipset Family Platform Controller Hub
(PCH). See the following figure.

The following table describes the processor lines covered in this document.

Table 1-1. Processor Lines

Processor Graphics On-Package Platform
Processor Line1 Package Base TDP
IA Cores Configuration Cache Type

35,51W 2 GT2
S-Processor Line (DT) LGA1151 N/A 2-Chip
35,65,91W 4 GT2

S-Pentium/Celeron
LGA1151 35,51,54W 2 GT1 N/A 2-Chip
Processor Line (DT)

Throughout this document, the 7th Generation Intel® Core™ processor, Intel®
Pentium® processor, Intel® Celeron® processor and Intel® Xeon® E3 v6 processor
families may be referred to simply as “processor”. The Intel® 200 Series Chipset Family
Platform Controller Hub (HUB) may be referred to simply as “PCH”.

This document is for the following S-Processor SKUs:

• 7th Generation Intel® Core™ processor family S-Processors
— i7-7700K, i5-7600K, i7-7700, i7-7700T, i5-7600, i5-7600T, i5-7500, i5-7500T,
i5-7400, i5-7400T, i3-7320, i3-7300, i3-7300T, i3-7100, i3-7100T
• Intel® Pentium® processors and Intel® Celeron® processors
— G4620, G4600, G4600T, G4560, G4560T, G3950, G3930, G3930T

Refer to the processor Specification Update for additional SKU details.

Datasheet, Volume 1 of 2
11
Figure 1-1. S-Processor Line Platforms

12 Datasheet, Volume 1 of 2
1.1 Supported Technologies
• Intel® Virtualization Technology (Intel® VT)
• Intel® Active Management Technology 11.0 (Intel® AMT 11.0)
• Intel® Trusted Execution Technology (Intel® TXT)
• Intel® Streaming SIMD Extensions 4.2 (Intel® SSE4.2)
• Intel® Hyper-Threading Technology (Intel® HT Technology)
• Intel® 64 Architecture
• Execute Disable Bit
• Intel® Turbo Boost Technology 2.0
• Intel® Advanced Vector Extensions 2 (Intel® AVX2)
• Intel® Advanced Encryption Standard New Instructions (Intel® AES-NI)
• PCLMULQDQ (Perform Carry-Less Multiplication Quad word) Instruction
• Intel® Secure KeyIntel® Transactional Synchronization Extensions (Intel® TSX-NI)
• PAIR – Power Aware Interrupt Routing
• SMEP – Supervisor Mode Execution Protection
• Intel® Boot Guard
• Intel® Software Guard Extensions (Intel® SGX)
• Intel® Memory Protection Extensions (Intel® MPX)
• GMM Scoring Accelerator
• Intel® Processor Trace

Note: The availability of the features may vary between processor SKUs.

Refer to Chapter 3 for more information.

1.2 Power Management Support

1.2.1 Processor Core Power Management
• Full support of ACPI C-states as implemented by the following processor C-states:
— C0, C1, C1E, C3, C6, C7, C8
• Enhanced Intel SpeedStep® Technology

Refer to Section 4.2 for more information.

1.2.2 System Power Management

• S0/S0ix, S3, S4, S5

Refer to Chapter 4, “Power Management” for more information.

1.2.3 Memory Controller Power Management

• Disabling Unused System Memory Outputs

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13
 • DRAM Power Management and Initialization
• Initialization Role of CKE
• Conditional Self-Refresh
• Dynamic Power Down
• DRAM I/O Power Management
• DDR Electrical Power Gating (EPG)
• Power training

Refer to Section 4.3 for more information.

1.2.4 Processor Graphics Power Management

1.2.4.1 Memory Power Savings Technologies
• Intel Rapid Memory Power Management (Intel RMPM)
• Intel Smart 2D Display Technology (Intel S2DDT)

1.2.4.2 Display Power Savings Technologies

• Intel (Seamless & Static) Display Refresh Rate Switching (DRRS) with eDP port
• Intel Automatic Display Brightness
• Smooth Brightness
• Intel Display Power Saving Technology (Intel DPST 6)
• Panel Self-Refresh 2 (PSR 2)
• Low Power Single Pipe (LPSP)

1.2.4.3 Graphics Core Power Savings Technologies

• Intel Graphics Dynamic Frequency
• Intel Graphics Render Standby Technology (Intel GRST)
• Dynamic FPS (Intel DFPS)

Refer to Section 4.6 for more information.

1.3 Thermal Management Support

• Digital Thermal Sensor
• Intel Adaptive Thermal Monitor
• THERMTRIP# and PROCHOT# support
• On-Demand Mode
• Memory Open and Closed Loop Throttling
• Memory Thermal Throttling
• External Thermal Sensor (TS-on-DIMM and TS-on-Board)
• Render Thermal Throttling

14 Datasheet, Volume 1 of 2
 • Fan speed control with DTS
• Intel Turbo Boost Technology 2.0 Power Control

Refer to Chapter 5, “Thermal Management” for more information.

1.4 Package Support

The processor is available in the following packages:
• A 37.5 mm x 37.5 mm LGA package (LGA1151) for S-Processor Line

1.5 Processor Testability

An XDP on-board connector is warmly recommended to enable full debug capabilities.
For the processor SKUs, a merged XDP connector is highly recommended to enable
lower C-state debug.

Note: When separate XDP connectors will be used at C8 state, the processor will need to be
waked up using the PCH.

The processor includes boundary-scan for board and system level testability.

1.6 Operating Systems Support

Windows* 10 OS X
Processor Line Linux* OS Chrome* OS
64 - bit

S-processor line Yes Yes Yes No

Note: Refer to OS Vendor site for more information regarding latest OS revision support.

1.7 Terminology
Table 1-2. Terminology (Sheet 1 of 3)
Term Description

4K Ultra High Definition (UHD)

AES Advanced Encryption Standard

AGC Adaptive Gain Control

BLT Block Level Transfer

BPP Bits per pixel

CDR Clock and Data Recovery

CTLE Continuous Time Linear Equalizer

DDI Digital Display Interface for DP or HDMI/DVI

DDR3 Third-generation Double Data Rate SDRAM memory technology

DDR3L/RS DDR3 Low Voltage Reduced Standby Power

Fourth-Generation Double Data Rate SDRAM Memory Technology

DDR4/DDR4-RS
RS - Reduced Standby Power

DFE decision feedback equalizer

DMA Direct Memory Access

Datasheet, Volume 1 of 2
15
Table 1-2. Terminology (Sheet 2 of 3)
Term Description

DMI Direct Media Interface

DP DisplayPort*

DTS Digital Thermal Sensor

eDP* embedded DisplayPort*

EU Execution Unit in the Processor Graphics

GSA Graphics in System Agent

HDCP High-bandwidth Digital Content Protection

HDMI* High Definition Multimedia Interface

IMC Integrated Memory Controller

Intel® 64 Technology 64-bit memory extensions to the IA-32 architecture

Intel® DPST Intel Display Power Saving Technology

Intel® PTT Intel Platform Trust Technology

Intel® TSX-NI Intel Transactional Synchronization Extensions

Intel® TXT Intel Trusted Execution Technology

Intel Virtualization Technology. Processor virtualization, when used in conjunction

Intel® VT with Virtual Machine Monitor software, enables multiple, robust independent
software environments inside a single platform.

Intel Virtualization Technology (Intel VT) for Directed I/O. Intel VT-d is a hardware
assist, under system software (Virtual Machine Manager or OS) control, for enabling
Intel® VT-d
I/O device virtualization. Intel VT-d also brings robust security by providing
protection from errant DMAs by using DMA remapping, a key feature of Intel VT-d.

IOV I/O Virtualization

ISP Image Signal Processor

Low Frequency Mode. corresponding to the Enhanced Intel SpeedStep®

LFM
Technology’s lowest voltage/frequency pair. It can be read at MSR CEh [47:40].

LLC Last Level Cache

LPDDR3 Low Power Third-generation Double Data Rate SDRAM memory technology

Low-Power Mode.The LPM Frequency is less than or equal to the LFM Frequency. The
LPM LPM TDP is lower than the LFM TDP as the LPM configuration limits the processor to
single thread operation

LPSP Low-Power Single Pipe

Lowest Supported Frequency.This frequency is the lowest frequency where

LSF
manufacturing confirms logical functionality under the set of operating conditions.

MCP Multi Chip Package - includes the processor and the PCH.

Minimum Frequency Mode. MFM is the minimum ratio supported by the processor
MFM
and can be read from MSR CEh [55:48].

MLC Mid-Level Cache

Non-Critical to Function. NCTF locations are typically redundant ground or non-

NCTF critical reserved balls/lands, so the loss of the solder joint continuity at end of life
conditions will not affect the overall product functionality.

PAG Platform Power Architecture Guide (formerly PDDG)

Platform Controller Hub. The chipset with centralized platform capabilities including
the main I/O interfaces along with display connectivity, audio features, power
PCH
management, manageability, security, and storage features. The PCH may also be
referred as “chipset”.

PECI Platform Environment Control Interface

PEG PCI Express Graphics

16 Datasheet, Volume 1 of 2
Table 1-2. Terminology (Sheet 3 of 3)
Term Description

PL1, PL2, PL3 Power Limit 1, Power Limit 2, Power Limit 3

Processor The 64-bit multi-core component (package)

The term “processor core” refers to Si die itself, which can contain multiple
Processor Core execution cores. Each execution core has an instruction cache, data cache, and 256-
KB L2 cache. All execution cores share the LLC.

Processor Graphics Intel Processor Graphics

PSR Panel Self-Refresh

A unit of DRAM corresponding to four to eight devices in parallel, ignoring ECC.

Rank
These devices are usually, but not always, mounted on a single side of a SODIMM.

SCI System Control Interrupt. SCI is used in the ACPI protocol.

SDP Scenario Design Power

SGX Software Guard Extension

SHA Secure Hash Algorithm

SSC Spread Spectrum Clock

A non-operational state. The processor may be installed in a platform, in a tray, or

loose. Processors may be sealed in packaging or exposed to free air. Under these
conditions, processor landings should not be connected to any supply voltages, have
Storage Conditions any I/Os biased, or receive any clocks. Upon exposure to “free air” (that is, unsealed
packaging or a device removed from packaging material), the processor should be
handled in accordance with moisture sensitivity labeling (MSL) as indicated on the
packaging material.

STR Suspend to RAM

TAC Thermal Averaging Constant

TCC Thermal Control Circuit

TDP Thermal Design Power

TOB Tolerance Budget

TTV TDP Thermal Test Vehicle TDP

VCC Processor core power supply

VCCGT Processor Graphics Power Supply

VCCIO I/O Power Supply

VCCSA System Agent Power Supply

VCCST Vcc Sustain Power Supply

VDDQ DDR Power Supply

VLD Variable Length Decoding

VPID Virtual Processor ID

VSS Processor Ground

1.8 Related Documents

Table 1-3. Related Documents (Sheet 1 of 2)
Document Document Number / Location

7th Generation Intel® Processor Families Specification Update 334663

Datasheet, Volume 1 of 2
17
Table 1-3. Related Documents (Sheet 2 of 2)
Document Document Number / Location

7th Generation Intel® Processor Families for S Platforms Datasheet

335196
Volume 2 of 2

Intel® 200 Series Chipset Family Platform Controller Hub (PCH) Datasheet
335192
Volume 1 of 2

Intel® 200 Series Chipset Family Platform Controller Hub (PCH) Datasheet
335193
Volume 2 of 2

Intel® 200 Series Chipset Family Platform Controller Hub (PCH)

335194
Specification Update

Advanced Configuration and Power Interface 3.0 http://www.acpi.info/

DDR3L SDRAM Specification http://www.jedec.org

DDR4 Specification http://www.jedec.org

High Definition Multimedia Interface specification revision 1.4 http://www.hdmi.org/manufac-

turer/specification.aspx

Embedded DisplayPort* Specification revision 1.4 http://www.vesa.org/

vesa.standards/

DisplayPort* Specification revision 1.2 http://www.vesa.org/

vesa.standards/

PCI Express* Base Specification Revision 3.0 http://www.pcisig.com/specifi-

cations

Intel® 64 and IA-32 Architectures Software Developer's Manuals http://www.intel.com/products/

processor/manuals/index.htm

18 Datasheet, Volume 1 of 2
2 Interfaces

2.1 System Memory Interface

• Two channels of DDR3L/-RS, and DDR4 memory with a maximum of two DIMMs
per channel. DDR technologies, number of DIMMs per channel, number of ranks
per channel are SKU dependent.
• UDIMM, SO-DIMM, and Memory Down support (based on SKU)
• Single-channel and dual-channel memory organization modes
• Data burst length of eight for all memory organization modes
• DDR3L/-RS I/O Voltage of 1.35V - based on Processor Line
• DDR4 I/O Voltage of 1.2V
• 64-bit wide channels
• Non-ECC UDIMM and SODIMM DDR4/DDR3L/-RS support (based on SKU)
• Theoretical maximum memory bandwidth of:
— 20.8 GB/s in dual-channel mode assuming 1333 MT/s
— 25.0 GB/s in dual-channel mode assuming 1600 MT/s
— 33.3 GB/s in dual-channel mode assuming 2133 MT/s
— 37.5 GB/s in dual-channel mode assuming 2400 MT/s

Note: Memory down of all technologies (DDR3L/DDR4) should be implemented

homogeneously, which means that all DRAM devices should be from the same vendor
and have the same part number. Implementing a mix of DRAM devices may cause
serious signal integrity and functional issues.

Note: If the S-Processor Lines memory interface is configured to one DIMM per Channel, the
processor can use either of the DIMMs, DIMM0 or DIMM1, signals CTRL[1:0] or
CTRL[3:2].

2.1.1 System Memory Technology Supported

The Integrated Memory Controller (IMC) supports DDR3L/-RS, and DDR4 protocols
with two independent, 64-bit wide channels.

Table 2-1. Processor DRAM Support Matrix

Processor Line DPC1 DDR3L/-RS [MT/s] DDR4 [MT/s] LPDDR3 [MT/s]
3
S-Processor Line 2 1333/1600 2133 /2400 N/A

Notes:
1. DPC = DIMM Per Channel
2. N/A
3. S-Processor SO-DIMM 2DPC is limited to 2133 MT/s due to Daisy Chain topology.

Datasheet, Volume 1 of 2
20
 • DDR3L/-RS Data Transfer Rates:
— 1333 MT/s (PC3-10600)
— 1600 MT/s (PC3-12800)
• DDR4 Data Transfer Rates:
— 2133 MT/s (PC4-2133)
— 2400 MT/s (PC4-2400)
• SODIMM Modules:
DDR3L/-RS SODIMM/UDIMM Modules:
— Standard 4-Gb technology and addressing are supported for x8 and x16
devices.
DDR4 SODIMM/UDIMM Modules:
— Standard 4-Gb and 8-Gb technologies and addressing are supported for x8 and
x16 devices.
There is no support for memory modules with different technologies or capacities
on opposite sides of the same memory module. If one side of a memory module is
populated, the other side is either identical or empty.
• DDR3L/-RS Memory Down: Single and dual rank x8, x16 (based on SKU)
• DDR4 Memory Down: Single rank x8, x16 (based on SKU)

2.1.1.1 DDR3L/-RS Supported Memory Modules and Devices

Table 2-2. Supported DDR3L/-RS Non-ECC UDIMM Module Configurations

(S-Processor Line)
# of # of
Raw DRAM # of
DIMM DRAM # of Row/Col Banks Page
Card Device DRAM
Capacity Organization Ranks Address Inside Size
Version Technology Devices
Bits DRAM

A 4GB 4Gb 512M x 8 8 1 16/10 8 8K

B 8GB 4Gb 512M x 8 16 2 16/10 8 8K

Table 2-3. Supported DDR3L/-RS ECC UDIMM Module Configurations

(S-Processor Line)
# of # of
Raw DRAM # of
DIMM DRAM # of Row/Col Banks Page
Card Device DRAM
Capacity Organization Ranks Address Inside Size
Version Technology Devices
Bits DRAM

D 4GB 4Gb 512M x 8 9 1 16/10 8 8K

E 8GB 4Gb 512M x 8 18 2 16/10 8 8K

Table 2-4. Supported DDR3L/-RS Non-ECC SO-DIMM Module Configurations

(S-Processor Lines) (Sheet 1 of 2)
# of # of
Raw DRAM # of
DIMM DRAM # of Row/Col Banks Page
Card Device DRAM
Capacity Organization Ranks Address Inside Size
Version Technology Devices
Bits DRAM

A 4GB 4Gb 256M x 16 8 2 15/10 8 8K

B 4GB 4Gb 512M x 8 8 1 16/10 8 8K

C 2GB 4Gb 256M x 16 4 1 15/10 8 8K

21 Datasheet, Volume 1 of 2
Table 2-4. Supported DDR3L/-RS Non-ECC SO-DIMM Module Configurations
(S-Processor Lines) (Sheet 2 of 2)
# of # of
Raw DRAM # of
DIMM DRAM # of Row/Col Banks Page
Card Device DRAM
Capacity Organization Ranks Address Inside Size
Version Technology Devices
Bits DRAM

F 8GB 4Gb 512M x 8 16 2 16/10 8 8K

2.1.1.2 DDR4 Supported Memory Modules and Devices

Table 2-5. Supported DDR4 Non-ECC UDIMM Module Configurations

(S-Processor Lines)
# of # of
Raw DRAM # of
DIMM DRAM # of Row/Col Banks Page
Card Device DRAM
Capacity Organization Ranks Address Inside Size
Version Technology Devices
Bits DRAM

A 4GB 4Gb 512M x 8 8 1 15/10 16 8K

A 8GB 8Gb 1024M x 8 8 1 16/10 16 8K

B 8GB 4Gb 512M x 8 16 2 15/10 16 8K

B 16GB 8Gb 1024M x 8 16 2 16/10 16 8K

C 2GB 4Gb 256M x 16 4 1 15/10 8 8K

C 4GB 8Gb 512M x 16 4 1 16/10 8 8K

Table 2-6. Supported DDR4 ECC UDIMM Module Configurations

(S-Processor Lines)
# of # of
Raw DRAM # of
DIMM DRAM # of Row/Col Banks Page
Card Device DRAM
Capacity Organization Ranks Address Inside Size
Version Technology Devices
Bits DRAM

D 4GB 4Gb 512M x 8 9 1 15/10 16 8K

D 8GB 8Gb 1024M x 8 9 1 16/10 16 8K

E 8GB 4Gb 512M x 8 18 2 15/10 16 8K

E 16GB 8Gb 1024M x 8 18 2 16/10 16 8K

Table 2-7. Supported DDR4 Non-ECC SODIMM Module Configurations

(S-Processor Lines)
# of # of
Raw DRAM # of
DIMM DRAM # of Row/Col Banks Page
Card Device DRAM
Capacity Organization Ranks Address Inside Size
Version Technology Devices
Bits DRAM

A 4GB 4Gb 512M x 8 8 1 15/10 16 8K

A 8GB 8Gb 1024M x 8 8 1 16/10 16 8K

B 8GB 4Gb 512M x 8 16 2 15/10 16 8K

B 16GB 8Gb 1024M x 8 16 2 16/10 16 8K

C 2GB 4Gb 256M x 16 4 1 15/10 8 8K

C 4GB 8Gb 512M x 16 4 1 16/10 8 8K

E 8GB 4Gb 512M x 8 16 2 15/10 16 8K

Datasheet, Volume 1 of 2
22
Table 2-7. Supported DDR4 Non-ECC SODIMM Module Configurations
(S-Processor Lines)
# of # of
Raw DRAM # of
DIMM DRAM # of Row/Col Banks Page
Card Device DRAM
Capacity Organization Ranks Address Inside Size
Version Technology Devices
Bits DRAM

E 16GB 8Gb 1024M x 8 16 2 16/10 16 8K

Table 2-8. Supported DDR4 ECC SODIMM Module Configurations

(S-Processor Lines)
# of # of
Raw DRAM # of
DIMM DRAM # of Row/Col Banks Page
Card Device DRAM
Capacity Organization Ranks Address Inside Size
Version Technology Devices
Bits DRAM

D 4GB 4Gb 512M x 8 9 1 15/10 16 8K

D 8GB 8Gb 1024M x 8 9 1 16/10 16 8K

G 8GB 4Gb 512M x 8 18 2 15/10 16 8K

G 16GB 8Gb 1024M x 8 18 2 16/10 16 8K

H 8GB 4Gb 512M x 8 18 2 15/10 16 8K

H 16GB 8Gb 1024M x 8 18 2 16/10 16 8K

2.1.2 System Memory Timing Support

The IMC supports the following DDR Speed Bin, CAS Write Latency (CWL), and
command signal mode timings on the main memory interface:
• tCL = CAS Latency
• tRCD = Activate Command to READ or WRITE Command delay
• tRP = PRECHARGE Command Period
• CWL = CAS Write Latency
• Command Signal modes:
— 1N indicates a new DDR3L/DDR4 command may be issued every clock
— 2N indicates a new DDR3L/DDR4 command may be issued every 2 clocks

Table 2-9. DRAM System Memory Timing Support

DPC
DRAM Transfer tRCD CMD
tCL (tCK) tRP (tCK) CWL (tCK) (SODIMM
Device Rate (MT/s) (tCK) Mode
Only)

1333 8/9 8/9 8/9 7 1 or 2 1N/2N

DDR3L/-RS
1600 10/11 10/11 10/11 8 1 or 2 1N/2N
DDR4 2133 15/16 14/15/16 15/16 11/14/14 1 or 2 1N/2N
DDR4 2400 17 17 17 12/16/16 1 or 2 1N/2N

23 Datasheet, Volume 1 of 2
2.1.3 System Memory Organization Modes
The IMC supports two memory organization modes, single-channel and dual-channel.
Depending upon how the DDR Schema and DIMM Modules are populated in each
memory channel, a number of different configurations can exist.

Single-Channel Mode

In this mode, all memory cycles are directed to a single channel. Single-Channel mode
is used when either the Channel A or Channel B DIMM connectors are populated in any
order, but not both.

Dual-Channel Mode – Intel® Flex Memory Technology Mode

The IMC supports Intel Flex Memory Technology Mode. Memory is divided into a
symmetric and asymmetric zone. The symmetric zone starts at the lowest address in
each channel and is contiguous until the asymmetric zone begins or until the top
address of the channel with the smaller capacity is reached. In this mode, the system
runs with one zone of dual-channel mode and one zone of single-channel mode,
simultaneously, across the whole memory array.

Note: Channels A and B can be mapped for physical channel 0 and 1 respectively or vice
versa. However, channel A size should be greater or equal to channel B size.

Figure 2-1. Intel® Flex Memory Technology Operations

TOM

C Non interleaved
access

B
C

Dual channel
interleaved access
B B
B

CH A CH B

CH A and CH B can be configured to be physical channels 0 or 1

B – The largest physical memory amount of the smaller size memory module
C – The remaining physical memory amount of the larger size memory module

Dual-Channel Symmetric Mode (Interleaved Mode)

Dual-Channel Symmetric mode, also known as interleaved mode, provides maximum
performance on real world applications. Addresses are ping-ponged between the
channels after each cache line (64-byte boundary). If there are two requests, and the
second request is to an address on the opposite channel from the first, that request can
be sent before data from the first request has returned. If two consecutive cache lines

Datasheet, Volume 1 of 2
24
 are requested, both may be retrieved simultaneously, since they are ensured to be on
opposite channels. Use Dual-Channel Symmetric mode when both Channel A and
Channel B DIMM connectors are populated in any order, with the total amount of
memory in each channel being the same.
When both channels are populated with the same memory capacity and the boundary
between the dual channel zone and the single channel zone is the top of memory, IMC
operates completely in Dual-Channel Symmetric mode.

Note: The DRAM device technology and width may vary from one channel to the other.

2.1.4 System Memory Frequency

In all modes, the frequency of system memory is the lowest frequency of all memory
modules placed in the system, as determined through the SPD registers on the
memory modules. The system memory controller supports up to two DIMM connectors
per channel. If DIMMs with different latency are populated across the channels, the
BIOS will use the slower of the two latencies for both channels. For Dual-Channel
modes both channels should have a DIMM connector populated. For Single-Channel
mode, only a single channel can have a DIMM connector populated.

2.1.5 Technology Enhancements of Intel® Fast Memory Access

(Intel® FMA)
The following sections describe the Just-in-Time Scheduling, Command Overlap, and
Out-of-Order Scheduling Intel FMA technology enhancements.

Just-in-Time Command Scheduling

The memory controller has an advanced command scheduler where all pending
requests are examined simultaneously to determine the most efficient request to be
issued next. The most efficient request is picked from all pending requests and issued
to system memory Just-in-Time to make optimal use of Command Overlapping. Thus,
instead of having all memory access requests go individually through an arbitration
mechanism forcing requests to be executed one at a time, they can be started without
interfering with the current request allowing for concurrent issuing of requests. This
allows for optimized bandwidth and reduced latency while maintaining appropriate
command spacing to meet system memory protocol.

Command Overlap

Command Overlap allows the insertion of the DRAM commands between the Activate,
Pre-charge, and Read/Write commands normally used, as long as the inserted
commands do not affect the currently executing command. Multiple commands can be
issued in an overlapping manner, increasing the efficiency of system memory protocol.

Out-of-Order Scheduling
While leveraging the Just-in-Time Scheduling and Command Overlap enhancements,
the IMC continuously monitors pending requests to system memory for the best use of
bandwidth and reduction of latency. If there are multiple requests to the same open
page, these requests would be launched in a back to back manner to make optimum
use of the open memory page. This ability to reorder requests on the fly allows the IMC
to further reduce latency and increase bandwidth efficiency.

25 Datasheet, Volume 1 of 2
2.1.6 Data Scrambling
The system memory controller incorporates a Data Scrambling feature to minimize the
impact of excessive di/dt on the platform system memory VRs due to successive 1s and
0s on the data bus. Past experience has demonstrated that traffic on the data bus is not
random and can have energy concentrated at specific spectral harmonics creating high
di/dt which is generally limited by data patterns that excite resonance between the
package inductance and on die capacitances. As a result, the system memory controller
uses a data scrambling feature to create pseudo-random patterns on the system
memory data bus to reduce the impact of any excessive di/dt.

2.1.7 DDR I/O Interleaving

The processor supports I/O interleaving, which has the ability to swap DDR bytes for
routing considerations. BIOS configures the I/O interleaving mode before DDR training.

There are 2 supported modes:

• Interleave (IL)
• Non-Interleave (NIL)
The following table and figure describe the pin mapping between the IL and NIL modes.

Table 2-10. Interleave (IL) and Non-Interleave (NIL) Modes Pin Mapping
IL NIL

Channel Byte Channel Byte

DDR0 Byte0 DDR0 Byte0

DDR0 Byte1 DDR0 Byte1

DDR0 Byte2 DDR0 Byte4

DDR0 Byte3 DDR0 Byte5

DDR0 Byte4 DDR1 Byte0

DDR0 Byte5 DDR1 Byte1

DDR0 Byte6 DDR1 Byte4

DDR0 Byte7 DDR1 Byte5

DDR1 Byte0 DDR0 Byte2

DDR1 Byte1 DDR0 Byte3

DDR1 Byte2 DDR0 Byte6

DDR1 Byte3 DDR0 Byte7

DDR1 Byte4 DDR1 Byte2

DDR1 Byte5 DDR1 Byte3

DDR1 Byte6 DDR1 Byte6

DDR1 Byte7 DDR1 Byte7

Datasheet, Volume 1 of 2
26
Figure 2-2. Interleave (IL) and Non-Interleave (NIL) Modes Mapping

Interleave back to back Non-Interleave side by side

Ch B Ch B Ch B Ch B
DQ/DQS CMD/CTRL DQ/DQS CMD/CTRL
Ch A Ch B
DQ/DQS DQ/DQS
Ch A Ch A Ch A Ch A
DQ/DQS CMD/CTRL DQ/DQS CMD/CTRL

Ch A SoDIMM Ch A SoDIMM Ch B SoDIMM

Ch B SoDIMM

2.1.8 Data Swapping

By default, the processor supports on-board data swapping in two manners (for all
segments and DRAM technologies):
• byte (DQ+DQS) swapping between bytes in the same channel.
• bit swapping within specific byte.

2.1.9 DRAM Clock Generation

Every supported rank has a differential clock pair. There are a total of four clock pairs
driven directly by the processor to DRAM.

2.1.10 DRAM Reference Voltage Generation

The memory controller has the capability of generating the DDR3L/-RS, and DDR4
Reference Voltage (VREF) internally for both read and write operations. The generated
VREF can be changed in small steps, and an optimum VREF value is determined for
both during a cold boot through advanced training procedures in order to provide the
best voltage to achieve the best signal margins.

2.1.11 Data Swizzling

All Processor Lines does not have die-to-package DDR swizzling.

2.2 PCI Express* Graphics Interface (PEG)

This section describes the PCI Express* interface capabilities of the processor. See the
PCI Express Base* Specification 3.0 for details on PCI Express*.

2.2.1 PCI Express* Support

The processor’s PCI Express* interface is a 16-lane (x16) port that can also be
configured as multiple ports at narrower widths (see Table 2-11, Table 2-12).
The processor supports the configurations shown in the following table.

27 Datasheet, Volume 1 of 2
Table 2-11. PCI Express* Bifurcation and Lane Reversal Mapping
Link Width CFG Signals Lanes
Bifurcation
0:1:0 0:1:1 0:1:2 CFG CFG CFG 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
[6] [5] [2]

1x16 x16 N/A N/A 1 1 1 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

1x16 x16 N/A N/A 1 1 0 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0

Reversed

2x8 x8 x8 N/A 1 0 1 0 1 2 3 4 5 6 7 0 1 2 3 4 5 6 7

2x8 x8 x8 N/A 1 0 0 7 6 5 4 3 2 1 0 7 6 5 4 3 2 1 0

Reversed

1x8+2x4 x8 x4 x4 0 0 1 0 1 2 3 4 5 6 7 0 1 2 3 0 1 2 3

1x8+2x4 x8 x4 x4 0 0 0 3 2 1 0 3 2 1 0 7 6 5 4 3 2 1 0

Reversed
Notes:
1. For CFG bus details, refer to Section 6.4.
2. Support is also provided for narrow width and use devices with lower number of lanes (that is, usage on x4 configuration),
however further bifurcation is not supported.
3. In case that more than one device is connected, the device with the highest lane count, should always be connected to the
lower lanes, as follows:
— Connect lane 0 of 1st device to lane 0.
— Connect lane 0 of 2nd device to lane 8.
— Connect lane 0 of 3rd device to lane 12.
For example:
a. When using 1x8 + 2x4, the 8 lane device should use lanes 0:7.
b. When using 1x4 + 1x2, the 4 lane device should use lanes 0:3, and other 2 lanes device should use lanes 8:9.
c. When using 1x4 + 1x2 + 1x1, 4 lane device should use lanes 0:3, two lane device should use lanes 8:9, one lane
device should use lane 12.
4. for reversal lanes, for example:
When using 1x8, the 8 lane device should use lanes 8:15, so lane 15 will be connected to lane 0 of the Device.
5. For Basin Falls platform use 1x8+2x4 Bifurcation

The processor supports the following:

• Hierarchical PCI-compliant configuration mechanism for downstream devices
• Traditional PCI style traffic (asynchronous snooped, PCI ordering)
• PCI Express* extended configuration space. The first 256 bytes of configuration
space aliases directly to the PCI Compatibility configuration space. The remaining
portion of the fixed 4-KB block of memory-mapped space above that (starting at
100h) is known as extended configuration space.
• PCI Express* Enhanced Access Mechanism. Accessing the device configuration
space in a flat memory mapped fashion
• Automatic discovery, negotiation, and training of link out of reset.
• Peer segment destination posted write traffic (no peer-to-peer read traffic) in
Virtual Channel 0: DMI -> PCI Express* Port 0
• 64-bit downstream address format, but the processor never generates an address
above 512 GB (Bits 63:39 will always be zeros)
• 64-bit upstream address format, but the processor responds to upstream read
transactions to addresses above 512 GB (addresses where any of Bits 63:39 are
nonzero) with an Unsupported Request response. Upstream write transactions to
addresses above 512 GB will be dropped.
• Re-issues Configuration cycles that have been previously completed with the
Configuration Retry status
• PCI Express* reference clock is 100-MHz differential clock

Datasheet, Volume 1 of 2
28
 • Power Management Event (PME) functions
• Dynamic width capability
• Message Signaled Interrupt (MSI and MSI-X) messages
• Lane reversal

The following table summarizes the transfer rates and theoretical bandwidth of PCI
Express* link.

Table 2-12. PCI Express* Maximum Transfer Rates and Theoretical Bandwidth

PCI Maximum Theoretical Bandwidth [GB/s]

Express* Encoding Transfer Rate
Generation [GT/s] x1 x2 x4 x8 x16

Gen 1 8b/10b 2.5 0.25 0.5 1.0 2.0 4.0

Gen 2 8b/10b 5 0.5 1.0 2.0 4.0 8.0

Gen 3 128b/130b 8 1.0 2.0 3.9 7.9 15.8

Note: The processor has limited support for Hot-Plug. For details, refer to Section 4.4.

2.2.2 PCI Express* Architecture

Compatibility with the PCI addressing model is maintained to ensure that all existing
applications and drivers operate unchanged.

The PCI Express* configuration uses standard mechanisms as defined in the PCI Plug
and-Play specification. The processor PCI Express* ports support Gen 3.
At 8 GT/s, Gen3 operation results in twice as much bandwidth per lane as compared to
Gen 2 operation. The 16 lanes port can operate at 2.5 GT/s, 5 GT/s, or 8 GT/s.

Gen 3 PCI Express* uses a 128b/130b encoding which is about 23% more efficient
than the 8b/10b encoding used in Gen 1 and Gen 2.

The PCI Express* architecture is specified in three layers – Transaction Layer, Data Link
Layer, and Physical Layer. See the PCI Express Base Specification 3.0 for details of PCI
Express* architecture.

29 Datasheet, Volume 1 of 2
2.2.3 PCI Express* Configuration Mechanism
The PCI Express* (external graphics) link is mapped through a PCI-to-PCI bridge
structure.

Figure 2-3. PCI Express* Related Register Structures in the Processor

PCI-PCI Bridge
PCI Compatible
PCI representing
PEG Host Bridge
Express* root PCI
Device
Device Express* ports
(Device 0)
(Device 1)

DMI

PCI Express* extends the configuration space to 4096 bytes per-device/function, as

compared to 256 bytes allowed by the conventional PCI specification. PCI Express*
configuration space is divided into a PCI-compatible region (that consists of the first
256 bytes of a logical device's configuration space) and an extended PCI Express*
region (that consists of the remaining configuration space). The PCI-compatible region
can be accessed using either the mechanisms defined in the PCI specification or using
the enhanced PCI Express* configuration access mechanism described in the PCI
Express* Enhanced Configuration Mechanism section.

The PCI Express* Host Bridge is required to translate the memory-mapped PCI
Express* configuration space accesses from the host processor to PCI Express*
configuration cycles. To maintain compatibility with PCI configuration addressing
mechanisms, it is recommended that system software access the enhanced
configuration space using 32-bit operations (32-bit aligned) only. See the PCI Express
Base Specification for details of both the PCI-compatible and PCI Express* Enhanced
configuration mechanisms and transaction rules.

2.2.4 PCI Express* Equalization Methodology

The equalization of link requires equalization for both TX and RX sides for the processor
and for the End point device.

Adjusting transmitter and receiver of the lanes is done to improve signal reception
quality and for improving link robustness and electrical margin.

The link timing margins and voltage margins are strongly dependent on equalization of
the link.

The processor supports the following:

• Full TX Equalization: Three Taps Linear Equalization (Pre, Current and Post
cursors), with FS/LF (Full Swing /Low Frequency) 24/8 values respectively.

Datasheet, Volume 1 of 2
30
 • Full RX Equalization and acquisition for: AGC (Adaptive Gain Control), CDR (Clock
and Data Recovery), adaptive DFE (decision feedback equalizer) and adaptive CTLE
peaking (continuous time linear equalizer).
• Full adaptive phase 3 EQ compliant with PCI Express* Gen 3 specification

See the PCI Express* Base Specification 3.0 for details on PCI Express* equalization.

2.3 Direct Media Interface (DMI)

Direct Media Interface (DMI) connects the processor and the PCH.
Main characteristics:
• 4 lanes Gen 3 DMI support
• 8 GT/s point-to-point DMI interface to PCH
• DC coupling - no capacitors between the processor and the PCH
• PCH end-to-end lane reversal across the link
• Half-Swing support (low-power/low-voltage)

Note: Only DMI x4 configuration is supported.

Note: Polarity Inversion and Lane Reversal on DMI Link are not allowed.

2.3.1 DMI Error Flow

DMI can only generate SERR in response to errors; never SCI, SMI, MSI, PCI INT, or
GPE. Any DMI related SERR activity is associated with Device 0.

2.3.2 DMI Link Down

The DMI link going down is a fatal, unrecoverable error. If the DMI data link goes to
data link down, after the link was up, then the DMI link hangs the system by not
allowing the link to retrain to prevent data corruption. This link behavior is controlled by
the PCH.

Downstream transactions that had been successfully transmitted across the link prior
to the link going down may be processed as normal. No completions from downstream,
non-posted transactions are returned upstream over the DMI link after a link down
event.

2.4 Processor Graphics

The processor graphics is based on Gen 9 LP (generation 9 Low Power) graphics core
architecture that enables substantial gains in performance and lower-power
consumption over prior generations.

The processor graphics architecture delivers high dynamic range of scaling to address
segments spanning low power to high power, increased performance per watt, support
for next generation of APIs. Gen 9 LP scalable architecture is partitioned by usage
domains along Render/Geometry, Media, and Display. The architecture also delivers
very low-power video playback and next generation analytic and filters for imaging-
related applications. The new Graphics Architecture includes 3D compute elements,

31 Datasheet, Volume 1 of 2
 Multi-format HW assisted decode/encode pipeline, and Mid-Level Cache (MLC) for
superior high definition playback, video quality, and improved 3D performance and
media.

The Display Engine handles delivering the pixels to the screen. GSA (Graphics in
System Agent) is the primary channel interface for display memory accesses and PCI-
like traffic in and out.

The display engine supports the latest display standards such as eDP* 1.4, DP* 1.2,
HDMI* 1.4, HW support for blend, scale, rotate, compress, high PPI support, and
advanced SRD2 display power management.

2.4.1 API Support (Windows*)

• Direct3D* 2015, Direct3D 11.2, Direct3D 11.1, Direct3D 9, Direct3D 10, Direct2D
• OpenGL* 5.0
• OpenCL* 2.1, OpenCL 2.0, OpenCL 1.2

DirectX* extensions:
• PixelSync, InstantAccess, Conservative Rasterization, Render Target Reads,
Floating-point De-norms, Shared Virtual memory, Floating Point atomics, MSAA
sample-indexing, Fast Sampling (Coarse LOD), Quilted Textures, GPU Enqueue
Kernels, GPU Signals processing unit. Other enhancements include color
compression.

Gen 9 LP architecture delivers hardware acceleration of Direct X* 11 Render pipeline

comprising of the following stages: Vertex Fetch, Vertex Shader, Hull Shader,
Tesselation, Domain Shader, Geometry Shader, Rasterizer, Pixel Shader, Pixel Output.

2.4.2 Media Support (Intel® QuickSync and Clear Video

Technology HD)
Gen 9 LP implements multiple media video codecs in hardware as well as a rich set of
image processing algorithms.

Note: All supported media codecs operate on 8 bpc, YCbCr 4:2:0 video profiles.

2.4.2.1 Hardware Accelerated Video Decode

Gen 9 LP implements a high-performance and low-power HW acceleration for video
decoding operations for multiple video codecs.

The HW decode is exposed by the graphics driver using the following APIs:
• Direct3D* 9 Video API (DXVA2)
• Direct3D11 Video API
• Intel Media SDK
• MFT (Media Foundation Transform) filters.

Gen 9 LP supports full HW accelerated video decoding for AVC/VC1/MPEG2/HEVC/VP8/

JPEG.

Datasheet, Volume 1 of 2
32
Table 2-13. Hardware Accelerated Video Decoding
Codec Profile Level Maximum Resolution

Main
MPEG2 Main 1080p
High

Advanced L3
VC1/WMV9 Main High 3840x3840
Simple Simple

High
AVC/H264 Main L5.1 2160p(4K)
MVC & stereo

VP8 0 Unified level 1080p

JPEG/MJPEG Baseline Unified level 16k x16k

HEVC/H265 (8 bits) Main L5.1 2160(4K)

HEVC/H265 (10 Main

L5.1 2160(4K)
bits) BT2020, isolate Dec

VP9 0 (4:2:0 Chroma 8-bit) Unified level 2160(4K)

Expected performance:
• More than 16 simultaneous decode streams @ 1080p.

Note: Actual performance depends on the processor SKU, content bit rate, and memory
frequency. Hardware decode for H264 SVC is not supported.

2.4.2.2 Hardware Accelerated Video Encode

Gen 9 LP implements a high-performance and low-power HW acceleration for video
decoding operations for multiple video codecs.

The HW encode is exposed by the graphics driver using the following APIs:
• Intel Media SDK
• MFT (Media Foundation Transform) filters

Gen 9 LP supports full HW accelerated video encoding for AVC/MPEG2/HEVC/VP8/JPEG.

Table 2-14. Hardware Accelerated Video Encode

Codec Profile Level Maximum Resolution

MPEG2 Main High 1080p

High
AVC/H264 L5.1 2160p(4K)
Main
VP8 Unified profile Unified level —
JPEG Baseline — 16Kx16K
HEVC/H265 Main L5.1 2160p(4K)
Support 8 bits 4:2:0 BT2020
VP9 may be obtained the pre/post — —
processing

Note: Hardware encode for H264 SVC is not supported.

33 Datasheet, Volume 1 of 2
2.4.2.3 Hardware Accelerated Video Processing
There is hardware support for image processing functions such as De-interlacing, Film
cadence detection, Advanced Video Scaler (AVS), detail enhancement, image
stabilization, gamut compression, HD adaptive contrast enhancement, skin tone
enhancement, total color control, Chroma de-noise, SFC pipe (Scalar and Format
Conversion), memory compression, Localized Adaptive Contrast Enhancement (LACE),
spatial de-noise, Out-Of-Loop De-blocking (from AVC decoder), 16 bpc support for de-
noise/de-mosaic.
There is support for Hardware assisted Motion Estimation engine for AVC/MPEG2
encode, True Motion, and Image stabilization applications.
The HW video processing is exposed by the graphics driver using the following APIs:
• Direct3D* 9 Video API (DXVA2).
• Direct3D 11 Video API.
• Intel Media SDK.
• MFT (Media Foundation Transform) filters.
• Intel CUI SDK.

Note: Not all features are supported by all the above APIs. Refer to the relevant
documentation for more details.

2.4.2.4 Hardware Accelerated Transcoding

Transcoding is a combination of decode video processing (optional) and encode. Using
the above hardware capabilities can accomplish a high-performance transcode pipeline.
There is not a dedicated API for transcoding.

The processor graphics supports the following transcoding features:

• Low-power and low-latency AVC encoder for video conferencing and Wireless
Display applications.
• Lossless memory compression for media engine to reduce media power.
• HW assisted Advanced Video Scaler.
• Low power Scaler and Format Converter.

Expected performance:
• S-Processor Line: 18x 1080p30 RT (same as previous generation).

Note: Actual performance depends on the processor Line, video processing algorithms used,
content bit rate, and memory frequency.

2.4.3 Camera Pipe Support

Camera pipe functions such as de-mosaic, white balance, defect pixel correction, black
level correction, gamma correction, LGCA, vignette control, Front end Color Space
Converter (CSC), Image Enhancement Color Processing (IECP).

Datasheet, Volume 1 of 2
34
2.4.4 Switchable/Hybrid Graphics
The processor supports Switchable/Hybrid graphics.

Switchable graphics: The Switchable Graphics feature allows you to switch between
using the Intel integrated graphics and a discrete graphics card. The Intel Integrated
Graphics driver will control the switching between the modes. In most cases it will
operate as follows: when connected to AC power - Discrete graphic card; when
connected to DC (battery) - Intel integrated GFX.

Hybrid graphics: Intel integrated graphics and a discrete graphics card work
cooperatively to achieve enhanced power and performance.

Table 2-15. Switchable/Hybrid Graphics Support

Operating System Hybrid Graphics Switchable Graphics2

Windows* 10 (64 bit) Yes1 N/A

Note:
1. Contact your graphics vendor to check for support.
2. Intel does not validate any SG configurations on Windows* 8.1 or Windows* 10.

2.4.5 Gen 9 LP Video Analytics

There is HW assist for video analytics filters such as scaling, convolve 2D/1D, minmax,
1P filter, erode, dilate, centroid, motion estimation, flood fill, cross correlation, Local
Binary Pattern (LBP).

Figure 2-4. Video Analytics Common Use Cases

35 Datasheet, Volume 1 of 2
2.4.6 Gen 9 LP (9th Generation Low Power) Block Diagram

Figure 2-5. Gen 9 LP Block Diagram

Scheduler State Management Power Management

Video Video
Video
Encode Video
Decode
Encode Decode

3D Pipeline
General Purpose Pipeline
Global Thread Dispatch
Local Thread Dispatch Local Thread Dispatch
Setup, Rasterization, Z Complex, Color Setup, Rasterization, Z Complex, Color

EU Array EU Array EU Array EU Array

EU EU EU EU EU EU EU EU EU EU EU EU

EU EU EU EU EU EU EU EU

EU EU EU EU

Sampler Sampler Sampler Sampler

Load/Store/Scatter/Gather Load/Store/Scatter/Gather Load/Store/Scatter/Gather Load/Store/Scatter/Gather

Local Memory Local Memory Local Memory Local Memory

L3 Cache L3 Cache
Cache/Memory Interface

LLC
eDRAM

System Memory

2.4.7 GT2 Graphic Frequency

Table 2-16. GT2 Graphics Frequency (S-Processor Line)

GT Unslice + GT Unslice +
Segment GT Unslice
1 GT Slice 2 GT Slice

S-Processor Line - Quad Core [GT Unslice only] -

GT Max Dynamic frequency —
with GT2 (1or2)BIN
S-Processor Line - Dual Core [GT Unslice only] -
GT Max Dynamic frequency —
with GT2 (1or2)BIN

Datasheet, Volume 1 of 2
36
2.5 Display Interfaces
The processor supports single eDP* interface and 3 DDI interfaces (depends on
segment):
• DDI interface can be configured as DisplayPort* or HDMI*.
• Each DDI can support dual mode (DP++).
• Each DDI can support DVI (DVI max resolution is 1920x1200 @ 60 Hz).
• The DisplayPort* can be configured to use 1, 2, or 4 lanes depending on the
bandwidth requirements and link data rate.
• DDI ports notated as: DDI B, C, D.
• S-Processor Line processors supports eDP and up to 3 DDI supporting DP/HDMI.
• AUX/DDC signals are valid for each DDI Port. (three for S-Processor Lines)
• Total Five dedicated HPD (Hot plug detect signals) are valid for all processor SKUs.

Note: SSC is supported in eDP*/DP for all Processor Lines.

Note: The processor platform supports DP Type-C implementation with additional discrete
components.

Table 2-17. VGA and Embedded DisplayPort* (eDP*) Bifurcation Summary

Port S-Processor Line

eDP - DDIA
Yes
(eDP lower x2 lanes, [1:0])

VGA - DDIE2
Yes1
(DP upper x2 lanes, [3:2])

Notes:
1. Requires a DP to VGA converter.
2. DP-to-VGA converter on the processor ports is supported using external dongle only, display driver
software for VGA dongles which configures the VGA port as a DP branch device.

The technologies supported by the processor are listed in the following table.

Table 2-18. Embedded DisplayPort (eDP*)/DDI Ports Availability

Ports Port Name in VBT S-Processor Line2,3

DDI0 - eDP Port A Yes

DDI1 Port B Yes

DDI2 Port C Yes

DDI3 Port D Yes

DDI4 - eDP/VGA Port E Yes1

Notes:
1. Port E is bifurcated from eDP, when VGA is used need to use available AUX (if HDMI is in used).
a. For example, DT can use eDP_AUX for VGA converter which is available as free Design but HPD
should be used as DDPE_HPD3.
2. 3xDDC (DDPB, DDPC, DDPD) are valid for all the processor SKUs .
3. 5xHPD (PCH) inputs (eDP_HPD, DDPB_HPD0, DDPC_HPD1, DDPD_HPD2, DDPE_HPD3) are valid for all
processor SKUs.
4. N/A
5. VBT provides a configuration option to select the four AUX channels A/B/C/D for a given port, based on
how the aux channel lines are connected physically on the board.

37 Datasheet, Volume 1 of 2
Table 2-19. Display Technologies Support
Technology Standard

eDP* 1.4 VESA* Embedded DisplayPort* Standard 1.4

VESA DisplayPort* Standard 1.2

DisplayPort* 1.2 VESA DisplayPort* PHY Compliance Test Specification 1.2
VESA DisplayPort* Link Layer Compliance Test Specification 1.2

HDMI* 1.41 High-Definition Multimedia Interface Specification Version 1.4

Notes:
1. HDMI* 2.0/2.0a support is possible using LS-Pcon converter chip connected to the DP port. The LS-Pcon
supports 2 modes:
a. Level shifter for HDMI 1.4 resolutions.
b. DP-HDMI 2.0 protocol converter for HDMI 2.0 resolutions.

• The HDMI* interface supports HDMI with 3D, 4Kx2K @ 24 Hz, Deep Color, and
x.v.Color.
• The processor supports High-bandwidth Digital Content Protection (HDCP) for high
definition content playback over digital interfaces. HDCP is not supported for eDP.
• The processor supports eDP display authentication: Alternate Scrambler Seed
Reset (ASSR).
• The processor supports Multi-Stream Transport (MST), enabling multiple monitors
to be used via a single DisplayPort connector.

The maximum MST DP supported resolution for S-Processors is shown in the following
table.

Table 2-20. Display Resolutions and Link Bandwidth for Multi-Stream Transport
Calculations (Sheet 1 of 2)
Refresh Pixel Clock Link Bandwidth
Pixels per line Lines
Rate [Hz] [MHz] [Gbps]

640 480 60 25.2 0.76

800 600 60 40 1.20
1024 768 60 65 1.95
1280 720 60 74.25 2.23
1280 768 60 68.25 2.05
1360 768 60 85.5 2.57
1280 1024 60 108 3.24
1400 1050 60 101 3.03
1680 1050 60 119 3.57
1920 1080 60 148.5 4.46
1920 1200 60 154 4.62
2048 1152 60 156.75 4.70
2048 1280 60 174.25 5.23
2048 1536 60 209.25 6.28
2304 1440 60 218.75 6.56
2560 1440 60 241.5 7.25
3840 2160 30 262.75 7.88
2560 1600 60 268.5 8.06
2880 1800 60 337.5 10.13

Datasheet, Volume 1 of 2
38
Table 2-20. Display Resolutions and Link Bandwidth for Multi-Stream Transport
Calculations (Sheet 2 of 2)
Refresh Pixel Clock Link Bandwidth
Pixels per line Lines
Rate [Hz] [MHz] [Gbps]

3200 2400 60 497.75 14.93

3840 2160 60 533.25 16.00
4096 2160 60 556.75 17.02
4096 2304 60 605 18.15
Notes:
1. All above is related to bit depth of 24.
2. The data rate for a given video mode can be calculated as: Data Rate = Pixel Frequency * Bit
Depth.
3. The bandwidth requirements for a given video mode can be calculated as:
Bandwidth = Data Rate * 1.25 (for 8B/10B coding overhead).
4. The Table above is partial List of the common Display resolutions, just for example.
The Link Bandwidth depends if the standards is Reduced Blanking or not.
If the Standard is Not reduced blanking, the expected Bandwidth will be higher.
For more details, refer to VESA and Industry Standards and Guidelines for Computer Display
Monitor Timing (DMT), Version 1.0, Rev. 13 February 8, 2013
5. To calculate the resolutions that can be supported in MST configurations, follow the below
guidelines:
a. Identify what is the Link Bandwidth (column right) according the requested Display
resolution.
b. Summarize the Bandwidth for Two of three Displays accordingly, and make sure the final
result is below 21.6Gbps. (for HBR2, four lanes)
c. For special cases when x2 lanes are used or HBR or RBR used, refer to the tables in
Section 2.5.11 accordingly.
For examples:
a. Docking Two displays: 3840x2160 @ 60 Hz + 1920x1200 @ 60 Hz = 16 + 4.62 =
20.62 Gbps [Supported]
b. Docking Three Displays: 3840x2160 @ 30 Hz + 3840x2160 @ 30 Hz +
1920x1080 @ 60 Hz = 7.88 + 7.88 + 4.16 = 19.92 Gbps [Supported]
6. Consider also the supported resolutions as mentioned in Section 2.5.6 and Section 2.5.7.

• The processor supports only 3 streaming independent and simultaneous display

combinations of DisplayPort*/eDP*/HDMI/DVI monitors. In the case where 4
monitors are plugged in, the software policy will determine which 3 will be used.
• Three High Definition Audio streams over the digital display interfaces are
supported.
• For display resolutions driving capability, see Maximum Display Resolution table.
• DisplayPort* Aux CH supported by the processor, while DDC channel, Panel power
sequencing, and HPD are supported through the PCH.

39 Datasheet, Volume 1 of 2
Figure 2-6. Processor Display Architecture (with 3 DDI ports as an example)

eDP
Processor AUX
X2 eDP
eDP
Transcoder
eDP x4 eDP
DP encoder X2 DDI E Or
eDP DP Timing, x2 eDP + x2 DP
Mux VDIP MUX
DPT,SRID

Transcoder A
Display
DP/HDMI/DVI
Pipe A
Timing,VDIP
X4 DDI B DDI B
(X4 DP/HDMI/DVI)
X4 DDI C DDI C
Transcoder B DDI
Display Ports ports: (X4 DP/HDMI/DVI)
DP/HDMI/DVI X4 DDI D
Pipe B Mux B,C,D DDI D
Timing,VDIP (X4 DP/HDMI/DVI)
Memory
Interface

Transcoder C
Display
DP/HDMI/DVI
Pipe C
Timing,VDIP
X3 DP’s
AUX

Audio
PCH
Codec

Interrupt HPD
Back light
modulation

Display is the presentation stage of graphics. This involves:

• Pulling rendered data from memory
• Converting raw data into pixels
• Blending surfaces into a frame
• Organizing pixels into frames
• Optionally scaling the image to the desired size
• Re-timing data for the intended target
• Formatting data according to the port output standard

2.5.1 DisplayPort*
The DisplayPort* is a digital communication interface that uses differential signaling to
achieve a high-bandwidth bus interface designed to support connections between PCs
and monitors, projectors, and TV displays.

A DisplayPort* consists of a Main Link, Auxiliary channel, and a Hot-Plug Detect signal.
The Main Link is a unidirectional, high-bandwidth, and low-latency channel used for
transport of isochronous data streams such as uncompressed video and audio. The
Auxiliary Channel (AUX CH) is a half-duplex bidirectional channel used for link
management and device control. The Hot-Plug Detect (HPD) signal serves as an
interrupt request for the sink device.

Datasheet, Volume 1 of 2
40
 The processor is designed in accordance to VESA* DisplayPort* specification. Refer to
Table 2-19, “Display Technologies Support”.

Figure 2-7. DisplayPort* Overview

Source Device Main Link Sink Device

(Isochronous Streams)
DisplayPort Tx DisplayPort Rx
(Processor)
AUX CH
(Link/Device Managemet)

Hot-Plug Detect
(Interrupt Request)

2.5.2 High-Definition Multimedia Interface (HDMI*)

The High-Definition Multimedia Interface (HDMI*) is provided for transmitting
uncompressed digital audio and video signals from DVD players, set-top boxes, and
other audio-visual sources to television sets, projectors, and other video displays. It
can carry high-quality multi-channel audio data and all standard and high-definition
consumer electronics video formats. The HDMI display interface connecting the
processor and display devices uses transition minimized differential signaling (TMDS) to
carry audiovisual information through the same HDMI cable.

HDMI includes three separate communications channels: TMDS, DDC, and the optional
CEC (consumer electronics control). CEC is not supported on the processor. As shown in
the following figure, the HDMI cable carries four differential pairs that make up the
TMDS data and clock channels. These channels are used to carry video, audio, and
auxiliary data. In addition, HDMI carries a VESA DDC. The DDC is used by an HDMI
Source to determine the capabilities and characteristics of the Sink.

Audio, video, and auxiliary (control/status) data is transmitted across the three TMDS
data channels. The video pixel clock is transmitted on the TMDS clock channel and is
used by the receiver for data recovery on the three data channels. The digital display
data signals driven natively through the PCH are AC coupled and needs level shifting to
convert the AC coupled signals to the HDMI compliant digital signals.

The processor HDMI interface is designed in accordance with the High-Definition

Multimedia Interface.

41 Datasheet, Volume 1 of 2
Figure 2-8. HDMI* Overview

HDMI Source HDMI Sink

HDMI Tx HDMI Rx
(Processor) TMDS Data Channel 0

TMDS Data Channel 1

TMDS Data Channel 2

TMDS Clock Channel

Hot-Plug Detect

Display Data Channel (DDC)

CEC Line (optional)

2.5.3 Digital Video Interface (DVI)

The processor Digital Ports can be configured to drive DVI-D. DVI uses TMDS for
transmitting data from the transmitter to the receiver, which is similar to the HDMI
protocol except for the audio and CEC. Refer to the HDMI section for more information
on the signals and data transmission. The digital display data signals driven natively
through the processor are AC coupled and need level shifting to convert the AC coupled
signals to the HDMI compliant digital signals.

2.5.4 embedded DisplayPort* (eDP*)

The embedded DisplayPort* (eDP*) is an embedded version of the DisplayPort
standard oriented towards applications, such as notebook and All-In-One PCs. Like
DisplayPort, embedded DisplayPort* also consists of a Main Link, Auxiliary channel, and
an optional Hot-Plug Detect signal. eDP* can be bifurcated in order to support VGA
display.

2.5.5 Integrated Audio

• HDMI* and display port interfaces carry audio along with video.
• The processor supports 3 High Definition audio streams on 3 digital ports
simultaneously (the DMA controllers are in the PCH).
• The integrated audio processing (DSP) is performed by the PCH, and delivered to
the processor using the AUDIO_SDI and AUDIO_CLK inputs pins.
• AUDIO_SDO output pin is used to carry responses back to the PCH.
• Supports only the internal HDMI and DP CODECs.

Datasheet, Volume 1 of 2
42
Table 2-21. Processor Supported Audio Formats over HDMI and DisplayPort*
Audio Formats HDMI* DisplayPort*

AC-3 Dolby* Digital Yes Yes

Dolby Digital Plus Yes Yes

DTS-HD* Yes Yes

LPCM, 192 kHz/24 bit, 8 Channel Yes Yes

Dolby TrueHD, DTS-HD Master Audio*

Yes Yes
(Lossless Blu-Ray Disc* Audio Format)

The processor will continue to support Silent stream. Silent stream is an integrated
audio feature that enables short audio streams, such as system events to be heard
over the HDMI* and DisplayPort* monitors. The processor supports silent streams over
the HDMI and DisplayPort interfaces at 44.1 kHz, 48 kHz, 88.2 kHz, 96 kHz, 176.4 kHz,
and 192 kHz sampling rates.

2.5.6 Multiple Display Configurations (Dual Channel DDR)

The following multiple display configuration modes are supported (with appropriate
driver software):
• Single Display is a mode with one display port activated to display the output to
one display device.
• Intel Display Clone is a mode with up to three display ports activated to drive the
display content of same color depth setting but potentially different refresh rate
and resolution settings to all the active display devices connected.
• Extended Desktop is a mode with up to three display ports activated to drive the
content with potentially different color depth, refresh rate, and resolution settings
on each of the active display devices connected.

The digital ports on the processor can be configured to support DisplayPort/HDMI/DVI.

The following table shows examples of valid three display configurations through the
processor.

Table 2-22. Maximum Display Resolution

Standard S-Processor Line Notes

eDP* 4096x2304 @ 60Hz, 24bpp 1,2,3,7

DP* 4096x2304 @ 60Hz, 24bpp 1,2,3,7

HDMI* 1.4
4096x2160 @ 30 Hz, 24 bpp 1,2,3
(native)

HDMI 2.0/2.0a
4096x2160 @ 60Hz, 24bpp 1,2,3,6
(Via LS-Pcon)

Notes:
1. Maximum resolution is based on implementation of 4 lanes with HBR2 link data rate.
2. bpp - bit per pixel.
3. Supports up to 4 displays, but only three can be active at the same time.
4. N/A
5. In the case of connecting more than one active display port, the processor frequency may
be lower than base frequency at thermally limited scenario.
6. HDMI2.0 implemented using LSPCON device. Only one LSPCON with HDCP2.2 support is
supported per platform.
7. Display resolution of 5120x2880@60Hz can be supported with 5K panels displays which
have two ports. (with the GFX driver accordingly).

43 Datasheet, Volume 1 of 2
2.5.7 Multiple Display Configurations (Single Channel DDR)

Table 2-23. S-Processor Line Display Resolution Configuration

Maximum Resolution (Clone/ Extended mode)
Minimum DDR speed [MT/s]
DP @60Hz / HDMI DP @60Hz / HDMI
eDP @60Hz (Primary)
@30Hz (Secondary 1) @30Hz (Secondary 2)

4096 x 2304 Not Connected Not Connected

1333
2560 x 1440 4096 x 2304 Not Connected

1600 3840 x 2160 4096 x 2304 Not Connected

1866 2560 x 1440 4096 x 2304 4096 x 2304

2133 3840 x 2160 4096 x 2304 4096 x 2304

Table 2-24. S-Processor Line Display Resolution Configuration (DP@30 Hz)

Maximum Resolution (Clone/ Extended mode)
Minimum DDR speed [MT/s]
DP @30Hz DP @30Hz
eDP @60Hz (Primary)
(Secondary 1) (Secondary 2)

3840 x 2160 Not Connected Not Connected

1333
3840 x 2160 4096 x 2304 Not Connected

1600 3840 x 2160 4096 x 2304 4096 x 2304

2.5.8 High-bandwidth Digital Content Protection (HDCP)

HDCP is the technology for protecting high-definition content against unauthorized
copy or unreceptive between a source (computer, digital set top boxes, and so on) and
the sink (panels, monitor, and TVs). The processor supports HDCP 2.2 for 4k Premium
content protection over wired displays (HDMI*, DVI, and DisplayPort*).

The HDCP 2.2 keys are integrated into the processor and customers are not required to
physically configure or handle the keys. HDCP2.2 for HDMI2.0 is covered by the
LSPCON platform device.

Some minor difference will be between Integrated HDCP2.2 over HDMI1.4 compared to
the HDCP2.2 over LSPCON in HDMI1.4 Mode. Also, LSPCON is needed for HDMI 2.0a
which defines HDR over HDMI.

The HDCP 1.4 keys are integrated into the processor and customers are not required to
physically configure or handle the keys.

Table 2-25. HDCP Display supported Implications Table (Sheet 1 of 2)

HDCP Maximum HDCP
Topic HDR1 BPC3 Comments
Revision Resolution Solution2

HDCP1.4 4K@60 No iHDCP 10 bit Legacy Integrated for HDCP1.4

DP
HDCP2.2 4K@60 Yes iHDCP 10 bit New Integrated for HDCP2.2

HDCP1.4 4K@30 No iHDCP 8 bit Legacy Integrated for HDCP1.4

HDMI1.4 HDCP2.2 4K@30 No LSPCON 8 bit LSPCON HDCP2.2 required

4
HDCP2.2 4K@30 No iHDCP 8 bit New Integrated for HDCP2.2

Datasheet, Volume 1 of 2
44
Table 2-25. HDCP Display supported Implications Table (Sheet 2 of 2)
HDCP Maximum HDCP
Topic HDR1 BPC3 Comments
Revision Resolution Solution2

HDMI2.0 HDCP2.2 4K@60 No LSPCON 12 bit (YUV 420) LSPCON HDCP2.2 required

HDMI2.0a HDCP2.2 4K@60 Yes LSPCON 12 bit (YUV 420) LSPCON HDCP2.2 required

Notes:
1. HDR - High Dynamic Range feature expands the range of both contrast and color significantly, HDR will be supported on DP
and HDMI2.0a configuration only.
2. HDCP Solutions:
a. iHDCP - Intel Silicon Integrated HDCP
b. LSPCon - 3rd Party motherboard soldered down solution
3. BPC - Bits Per Channel.
4. HDMI1.4 with the Integrated HDCP2.2 solution will replace the LSPCON Solution at a later time.
5. HDCP2.2 is supported by S-Processors.

2.5.9 Display Link Data Rate Support

Table 2-26. Display Link Data Rate Support

Technology Link Data Rate

RBR (1.62 GT/s)

2.16 GT/s
2.43 GT/s
eDP* HBR (2.7 GT/s)
3.24 GT/s
4.32 GT/s
HBR2 (5.4 GT/s)

RBR (1.62 GT/s)

DisplayPort* HBR (2.7 GT/s)
HBR2 (5.4 GT/s)

1.65 Gb/s
HDMI*
2.97 Gb/s

Table 2-27. Display Resolution and Link Rate Support

Link Rate
Resolution High Definition
Support

4096x2304 5.4 (HBR2) UHD (4K)

3840x2160 5.4 (HBR2) UHD (4K)

3200x2000 5.4 (HBR2) QHD+

3200x1800 5.4 (HBR2) QHD+

2880x1800 2.7 (HBR) QHD

2880x1620 2.7 (HBR) QHD

2560x1600 2.7 (HBR) QHD

2560x1440 2.7 (HBR) QHD

1920x1080 1.62 (RBR) FHD

45 Datasheet, Volume 1 of 2
2.5.10 Display Bit Per Pixel (BPP) Support

Table 2-28. Display Bit Per Pixel (BPP) Support

Technology Bit Per Pixel (bpp)

eDP* 24,30,36

DisplayPort* 24,30,36

HDMI* 24,36

2.5.11 Display Resolution per Link Width

Table 2-29. Supported Resolutions1 for HBR (2.7 Gbps) by Link Width
Max Link Bandwidth Max Pixel Clock
Link Width S-Processor Lines
[Gbps] (theoretical) [MHz]

4 lanes 10.8 360 2880x1800 @ 60 Hz, 24bpp

2 lanes 5.4 180 2048x1280 @ 60 Hz, 24bpp

1 lane 2.7 90 1280x960 @ 60 Hz, 24bpp

Notes:
1. The examples assumed 60 Hz refresh rate and 24 bpp.

Table 2-30. Supported Resolutions1 for HBR2 (5.4 Gbps) by Link Width
Max Link Bandwidth Max Pixel Clock
Link Width S-Processor Lines
[Gbps] (theoretical) [MHz]

See “Maximum Display

4 lanes 21.6 7202
Resolutions” table

2 lanes 10.8 360 2880x1800 @ 60 Hz, 24bpp

1 lane 5.4 180 2048x1280 @ 60 Hz, 24bpp

Notes:
1. The examples assumed 60 Hz refresh rate and 24 bpp.
2. The actual Max pixel clock for HBR2 is limited by the CD clock to 675 MHz for S-Processor Line.

2.6 Platform Environmental Control Interface (PECI)

PECI is an Intel proprietary interface that provides a communication channel between
Intel processors and external components like Super IO (SIO) and Embedded
Controllers (EC) to provide processor temperature, Turbo, Configurable TDP, and
memory throttling control mechanisms and many other services. PECI is used for
platform thermal management and real time control and configuration of processor
features and performance.

2.6.1 PECI Bus Architecture

The PECI architecture is based on a wired OR bus that the clients (as processor PECI)
can pull up (with strong drive).

The idle state on the bus is near zero.

Datasheet, Volume 1 of 2
46
 The following figures demonstrates PECI design and connectivity:
• PECI Host-Clients Connection: While the host/originator can be third party PECI
host and one of the PECI client is a processor PECI device.
• PECI EC Connection.

Figure 2-9. Example for PECI Host-Clients Connection

VTT
VTT
Q3
nX
Q1
nX
PECI

Q2
1X
CPECI
<10pF/Node

Host / Originator PECI Client

Additional
PECI Clients

47 Datasheet, Volume 1 of 2
Figure 2-10. Example for PECI EC Connection

Datasheet, Volume 1 of 2
48
3 Technologies

This chapter provides a high-level description of Intel technologies implemented in the

processor.

The implementation of the features may vary between the processor SKUs.

Details on the different technologies of Intel processors and other relevant external
notes are located at the Intel technology web site: http://www.intel.com/technology/

3.1 Intel® Virtualization Technology (Intel® VT)

Intel® Virtualization Technology (Intel® VT) makes a single system appear as multiple
independent systems to software. This allows multiple, independent operating systems
to run simultaneously on a single system. Intel VT comprises technology components
to support virtualization of platforms based on Intel architecture microprocessors and
chipsets.

Intel Virtualization Technology (Intel VT) for IA-32, Intel 64 and Intel Architecture (Intel
VT-x) added hardware support in the processor to improve the virtualization
performance and robustness. Intel Virtualization Technology for Directed I/O (Intel VT-
d) extends Intel VT-x by adding hardware assisted support to improve I/O device
virtualization performance.
Intel VT-x specifications and functional descriptions are included in the Intel 64 and IA-
32 Architectures Software Developer’s Manual, Volume 3. Available at:
http://www.intel.com/products/processor/manuals/index.htm
The Intel VT-d specification and other VT documents can be referenced at:
http://www.intel.com/technology/virtualization/index.htm
https://sharedspaces.intel.com/sites/PCDC/SitePages/Ingredients/
ingredient.aspx?ing=VT

3.1.1 Intel® Virtualization Technology (Intel® VT) for IA-32,

Intel® 64 and Intel® Architecture (Intel® VT-X)
Intel® VT-x Objectives
Intel VT-x provides hardware acceleration for virtualization of IA platforms. Virtual
Machine Monitor (VMM) can use Intel VT-x features to provide an improved reliable
virtualized platform. By using Intel VT-x, a VMM is:
• Robust: VMMs no longer need to use para-virtualization or binary translation. This
means that VMMs will be able to run off-the-shelf operating systems and
applications without any special steps.
• Enhanced: Intel VT enables VMMs to run 64-bit guest operating systems on IA x86
processors.
• More reliable: Due to the hardware support, VMMs can now be smaller, less
complex, and more efficient. This improves reliability and availability and reduces
the potential for software conflicts.

Datasheet, Volume 1 of 2
49
 • More secure: The use of hardware transitions in the VMM strengthens the isolation
of VMs and further prevents corruption of one VM from affecting others on the
same system.

Intel® VT-x Key Features

The processor supports the following added new Intel VT-x features:
• Extended Page Table (EPT) Accessed and Dirty Bits
— EPT A/D bits enabled VMMs to efficiently implement memory management and
page classification algorithms to optimize VM memory operations, such as de-
fragmentation, paging, live migration, and check-pointing. Without hardware
support for EPT A/D bits, VMMs may need to emulate A/D bits by marking EPT
paging-structures as not-present or read-only, and incur the overhead of EPT
page-fault VM exits and associated software processing.
• EPTP (EPT pointer) switching
— EPTP switching is a specific VM function. EPTP switching allows guest software
(in VMX non-root operation, supported by EPT) to request a different EPT
paging-structure hierarchy. This is a feature by which software in VMX non-root
operation can request a change of EPTP without a VM exit. Software will be able
to choose among a set of potential EPTP values determined in advance by
software in VMX root operation.
• Pause loop exiting
— Support VMM schedulers seeking to determine when a virtual processor of a
multiprocessor virtual machine is not performing useful work. This situation
may occur when not all virtual processors of the virtual machine are currently
scheduled and when the virtual processor in question is in a loop involving the
PAUSE instruction. The new feature allows detection of such loops and is thus
called PAUSE-loop exiting.

The processor IA core supports the following Intel VT-x features:

• Mode based (XU/XS) EPT execute control - New Feature for this processor
— A new mode of EPT operation which enables different controls for executability
of GPA based on Guest specified mode (User/Supervisor) of linear address
translating to the GPA. When the mode is enabled, the executability of a GPA is
defined by two bits in EPT entry. One bit for accesses to user pages and other
one for accesses to supervisor pages.
— The new mode requires changes in VMCS, and EPT entries. VMCS includes a bit
“mode based EPT execute control” which is used to enable/disable the mode.
An additional bit in EPT entry is defined as “supervisor-execute access”; the
original execute control bit is considered as “user-execute access”. If the “mode
based EPT execute control” is disabled the additional bit is ignored and the
system works with one bit execute control for both user pages and supervisor
pages.
— Behavioral changes - Behavioral changes are across three areas:
• Access to GPA- If the “mode-based EPT execute control” VM-execution
control is 1, treatment of guest-physical accesses by instruction fetches
depends on the linear address from which an instruction is being fetched
1.If the translation of the linear address specifies user mode (the U/S bit
was set in every paging structure entry used to translate the linear
address), the resulting guest-physical address is executable under
EPT only if the XU bit (at position 2) is set in every EPT paging-
structure entry used to translate the guest-physical address.
2.If the translation of the linear address specifies supervisor mode (the
U/S bit was clear in at least one of the paging-structure entries used

50 Datasheet, Volume 1 of 2
 to translate the linear address), the resulting guest-physical address
is executable under EPT only if the XS bit is set in every EPT paging-
structure entry used to translate the guest-physical address
—The XU and XS bits are used only when translating linear
addresses for guest code fetches. They do not apply to guest
page walks, data accesses, or A/D-bit updates
• VMEntry - If the “activate secondary controls” and “mode-based EPT
execute control” VM-execution controls are both 1, VM entries ensure that
the “enable EPT” VM-execution control is 1. VM entry fails if this check
fails. When such a failure occurs, control is passed to the next instruction,
• VMExit - The exit qualification due to EPT violation reports clearly
whether the violation was due to User mode access or supervisor mode
access.
— Capability Querying: IA32_VMX_PROCBASED_CTLS2 has bit to indicate the
capability, RDMSR can be used to read and query whether the processor
supports the capability or not.
• Extended Page Tables (EPT)
— EPT is hardware assisted page table virtualization
— It eliminates VM exits from guest OS to the VMM for shadow page-table
maintenance
• Virtual Processor IDs (VPID)
— Ability to assign a VM ID to tag processor IA core hardware structures (such as
TLBs)
— This avoids flushes on VM transitions to give a lower-cost VM transition time
and an overall reduction in virtualization overhead.
• Guest Preemption Timer
— Mechanism for a VMM to preempt the execution of a guest OS after an amount
of time specified by the VMM. The VMM sets a timer value before entering a
guest
— The feature aids VMM developers in flexibility and Quality of Service (QoS)
guarantees
• Descriptor-Table Exiting
— Descriptor-table exiting allows a VMM to protect a guest OS from internal
(malicious software based) attack by preventing relocation of key system data
structures like IDT (interrupt descriptor table), GDT (global descriptor table),
LDT (local descriptor table), and TSS (task segment selector).
— A VMM using this feature can intercept (by a VM exit) attempts to relocate
these data structures and prevent them from being tampered by malicious
software.

3.1.2 Intel® Virtualization Technology (Intel® VT) for Directed

I/O (Intel® VT-d)
Intel® VT-d Objectives

The key Intel VT-d objectives are domain-based isolation and hardware-based
virtualization. A domain can be abstractly defined as an isolated environment in a
platform to which a subset of host physical memory is allocated. Intel VT-d provides
accelerated I/O performance for a virtualized platform and provides software with the
following capabilities:
• I/O device assignment and security: for flexibly assigning I/O devices to VMs and
extending the protection and isolation properties of VMs for I/O operations.

Datasheet, Volume 1 of 2
51
 • DMA remapping: for supporting independent address translations for Direct
Memory Accesses (DMA) from devices.
• Interrupt remapping: for supporting isolation and routing of interrupts from devices
and external interrupt controllers to appropriate VMs.
• Reliability: for recording and reporting to system software DMA and interrupt errors
that may otherwise corrupt memory or impact VM isolation.

Intel VT-d accomplishes address translation by associating transaction from a given I/O
device to a translation table associated with the Guest to which the device is assigned.
It does this by means of the data structure in the following illustration. This table
creates an association between the device's PCI Express* Bus/Device/Function (B/D/F)
number and the base address of a translation table. This data structure is populated by
a VMM to map devices to translation tables in accordance with the device assignment
restrictions above, and to include a multi-level translation table (VT-d Table) that
contains Guest specific address translations.

Figure 3-1. Device to Domain Mapping Structures

(Dev 31, Func 7) Context entry 255

(Dev 0, Func 1)

(Dev 0, Func 0) Context entry 0

Context entry Table Address Translation

(Bus 255) Root entry 255 For bus N Structures for Domain A

(Bus N) Root entry N

(Bus 0) Root entry 0

Root entry table

Context entry 255

Context entry 0
Address Translation
Context entry Table Structures for Domain B
For bus 0

52 Datasheet, Volume 1 of 2
 Intel VT-d functionality, often referred to as an Intel VT-d Engine, has typically been
implemented at or near a PCI Express* host bridge component of a computer system.
This might be in a chipset component or in the PCI Express functionality of a processor
with integrated I/O. When one such VT-d engine receives a PCI Express transaction
from a PCI Express bus, it uses the B/D/F number associated with the transaction to
search for an Intel VT-d translation table. In doing so, it uses the B/D/F number to
traverse the data structure shown in the above figure. If it finds a valid Intel VT-d table
in this data structure, it uses that table to translate the address provided on the PCI
Express bus. If it does not find a valid translation table for a given translation, this
results in an Intel VT-d fault. If Intel VT-d translation is required, the Intel VT-d engine
performs an N-level table walk.

For more information, refer to Intel Virtualization Technology for Directed I/O
Architecture Specification http://www.intel.com/content/dam/www/public/us/en/
documents/product-specifications/vt-directed-io-spec.pdf

Intel® VT-d Key Features

The processor supports the following Intel VT-d features:

• Memory controller and processor graphics comply with the Intel VT-d 2.1
Specification.
• Two Intel VT-d DMA remap engines.
— iGFX DMA remap engine
— Default DMA remap engine (covers all devices except iGFX)
• Support for root entry, context entry, and default context
• 39-bit guest physical address and host physical address widths
• Support for 4K page sizes only
• Support for register-based fault recording only (for single entry only) and support
for MSI interrupts for faults
• Support for both leaf and non-leaf caching
• Support for boot protection of default page table
• Support for non-caching of invalid page table entries
• Support for hardware based flushing of translated but pending writes and pending
reads, on IOTLB invalidation
• Support for Global, Domain specific and Page specific IOTLB invalidation
• MSI cycles (MemWr to address FEEx_xxxxh) not translated
— Translation faults result in cycle forwarding to VBIOS region (byte enables
masked for writes). Returned data may be bogus for internal agents, PEG/DMI
interfaces return unsupported request status
• Interrupt Remapping is supported
• Queued invalidation is supported
• Intel VT-d translation bypass address range is supported (Pass Through)

The processor supports the following added new Intel VT-d features:
• 4-level Intel VT-d Page walk – both default Intel VT-d engine as well as the IGD VT-
d engine are upgraded to support 4-level Intel VT-d tables (adjusted guest address
width of 48 bits)

Datasheet, Volume 1 of 2
53
 • Intel VT-d superpage – support of Intel VT-d superpage (2 MB, 1 GB) for default
Intel VT-d engine (that covers all devices except IGD)
IGD Intel VT-d engine does not support superpage and BIOS should disable
superpage in default Intel VT-d engine when iGfx is enabled.

Note: Intel VT-d Technology may not be available on all SKUs.

3.2 Security Technologies

3.2.1 Intel® Trusted Execution Technology (Intel® TXT)
Intel® Trusted Execution Technology (Intel® TXT) defines platform-level enhancements
that provide the building blocks for creating trusted platforms.

The Intel TXT platform helps to provide the authenticity of the controlling environment
such that those wishing to rely on the platform can make an appropriate trust decision.
The Intel TXT platform determines the identity of the controlling environment by
accurately measuring and verifying the controlling software.

Another aspect of the trust decision is the ability of the platform to resist attempts to
change the controlling environment. The Intel TXT platform will resist attempts by
software processes to change the controlling environment or bypass the bounds set by
the controlling environment.

Intel TXT is a set of extensions designed to provide a measured and controlled launch
of system software that will then establish a protected environment for itself and any
additional software that it may execute.

These extensions enhance two areas:

• The launching of the Measured Launched Environment (MLE).
• The protection of the MLE from potential corruption.

The enhanced platform provides these launch and control interfaces using Safer Mode
Extensions (SMX).

The SMX interface includes the following functions:

• Measured/Verified launch of the MLE.
• Mechanisms to ensure the above measurement is protected and stored in a secure
location.
• Protection mechanisms that allow the MLE to control attempts to modify itself.

The processor also offers additional enhancements to System Management Mode

(SMM) architecture for enhanced security and performance. The processor provides
new MSRs to:
• Enable a second SMM range
• Enable SMM code execution range checking
• Select whether SMM Save State is to be written to legacy SMRAM or to MSRs
• Determine if a thread is going to be delayed entering SMM
• Determine if a thread is blocked from entering SMM
• Targeted SMI, enable/disable threads from responding to SMIs, both VLWs and IPI

54 Datasheet, Volume 1 of 2
 For the above features, BIOS should test the associated capability bit before attempting
to access any of the above registers.
For more information, refer to the Intel® Trusted Execution Technology Measured
Launched Environment Programming Guide

Note: Intel TXT Technology may not be available on all SKUs.

3.2.2 Intel® Advanced Encryption Standard New Instructions

(Intel® AES-NI)
The processor supports Intel Advanced Encryption Standard New Instructions (Intel
AES-NI) that are a set of Single Instruction Multiple Data (SIMD) instructions that
enable fast and secure data encryption and decryption based on the Advanced
Encryption Standard (AES). Intel AES-NI are valuable for a wide range of cryptographic
applications, such as applications that perform bulk encryption/decryption,
authentication, random number generation, and authenticated encryption. AES is
broadly accepted as the standard for both government and industry applications, and is
widely deployed in various protocols.

Intel AES-NI consists of six Intel SSE instructions. Four instructions, AESENC,
AESENCLAST, AESDEC, and AESDELAST facilitate high performance AES encryption and
decryption. The other two, AESIMC and AESKEYGENASSIST, support the AES key
expansion procedure. Together, these instructions provide full hardware for supporting
AES; offering security, high performance, and a great deal of flexibility.

Note: Intel AES-NI Technology may not be available on all SKUs.

3.2.3 PCLMULQDQ (Perform Carry-Less Multiplication Quad

word) Instruction
The processor supports the carry-less multiplication instruction, PCLMULQDQ.
PCLMULQDQ is a Single Instruction Multiple Data (SIMD) instruction that computes the
128-bit carry-less multiplication of two 64-bit operands without generating and
propagating carries. Carry-less multiplication is an essential processing component of
several cryptographic systems and standards. Hence, accelerating carry-less
multiplication can significantly contribute to achieving high speed secure computing
and communication.

3.2.4 Intel® Secure Key

The processor supports Intel Secure Key (formerly known as Digital Random Number
Generator (DRNG)), a software visible random number generation mechanism
supported by a high quality entropy source. This capability is available to programmers
through the RDRAND instruction. The resultant random number generation capability is
designed to comply with existing industry standards in this regard (ANSI X9.82 and
NIST SP 800-90).

Some possible usages of the RDRAND instruction include cryptographic key generation
as used in a variety of applications, including communication, digital signatures, secure
storage, and so on.

Datasheet, Volume 1 of 2
55
3.2.5 Execute Disable Bit
The Execute Disable Bit allows memory to be marked as non executable when
combined with a supporting operating system. If code attempts to run in non-
executable memory, the processor raises an error to the operating system. This feature
can prevent some classes of viruses or worms that exploit buffer overrun vulnerabilities
and can, thus, help improve the overall security of the system.

See the Intel 64 and IA-32 Architectures Software Developer's Manuals for more
detailed information.

3.2.6 Boot Guard Technology

Boot Guard technology is a part of boot integrity protection technology. Boot Guard can
help protect the platform boot integrity by preventing execution of unauthorized boot
blocks. With Boot Guard, platform manufacturers can create boot policies such that
invocation of an unauthorized (or untrusted) boot block will trigger the platform
protection per the manufacturer's defined policy.

With verification based in the hardware, Boot Guard extends the trust boundary of the
platform boot process down to the hardware level.

Boot Guard accomplishes this by:

• Providing of hardware-based Static Root of Trust for Measurement (S-RTM) and the
Root of Trust for Verification (RTV) using Intel architectural components.
• Providing of architectural definition for platform manufacturer Boot Policy.
• Enforcing of manufacture provided Boot Policy using Intel architectural
components.

Benefits of this protection is that Boot Guard can help maintain platform integrity by
preventing re-purposing of the manufacturer’s hardware to run an unauthorized
software stack.

3.2.7 Intel® Supervisor Mode Execution Protection (SMEP)

Intel® Supervisor Mode Execution Protection (SMEP) is a mechanism that provides the
next level of system protection by blocking malicious software attacks from user mode
code when the system is running in the highest privilege level. This technology helps to
protect from virus attacks and unwanted code from harming the system. For more
information, refer to Intel® 64 and IA-32 Architectures Software Developer's Manual,
Volume 3A at: http://www.intel.com/Assets/PDF/manual/253668.pdf

3.2.8 Intel® Supervisor Mode Access Protection (SMAP)

Intel® Supervisor Mode Access Protection (SMAP) is a mechanism that provides next
level of system protection by blocking a malicious user from tricking the operating
system into branching off user data. This technology shuts down very popular attack
vectors against operating systems.

For more information, refer to the Intel ® 64 and IA-32 Architectures Software
Developer's Manual, Volume 3A: http://www.intel.com/Assets/PDF/manual/253668.pdf

56 Datasheet, Volume 1 of 2
3.2.9 Intel® Memory Protection Extensions (Intel® MPX)
Intel® MPX provides hardware accelerated mechanism for memory testing (heap and
stack) buffer boundaries in order to identify buffer overflow attacks.

An Intel MPX enabled compiler inserts new instructions that tests memory boundaries
prior to a buffer access. Other Intel MPX commands are used to modify a database of
memory regions used by the boundary checker instructions.

The Intel MPX ISA is designed for backward compatibility and will be treated as no-
operation instructions (NOPs) on older processors.

Intel MPX can be used for:

• Efficient runtime memory boundary checks for security-sensitive portions of the
application.
• As part of a memory checker tool for finding difficult memory access errors. Intel
MPX is significantly of magnitude faster than software implementations.

Intel MPX emulation (without hardware acceleration) is available with the Intel C++
Compiler 13.0 or newer.

For more information, refer to the Intel MPX documentation.

3.2.10 Intel® Software Guard Extensions (Intel® SGX)

Software Guard Extensions (SGX) is a processor enhancement designed to help protect
application integrity and confidentiality of secrets and withstands software and certain
hardware attacks.

Software Guard Extensions (SGX) creates and operates in protected regions of memory
named Enclaves.

Enclave code can be accessed using new special ISA commands that jump into per
Enclave predefined addresses. Data within an Enclave can only be accessed from that
same Enclave code.

The latter security statements hold under all privilege levels including supervisor mode
(ring-0), System Management Mode (SMM) and other Enclaves.

Software Guard Extensions (SGX) features a memory encryption engine that both
encrypt Enclave memory as well as protect it from corruption and replay attacks.

Software Guard Extensions (SGX) benefits over alternative Trusted Execution

Environments (TEEs) are:
• Enclaves are written using C/C++ using industry standard build tools.
• High processing power as they run on the processor.
• Large amount of memory are available as well as non-volatile storage (such as disk
drives).
• Simple to maintain and debug using standard IDEs (Integrated Development
Environment)
• Scalable to a larger number of applications and vendors running concurrently

For more information, refer to the Intel® SGX Website.

Datasheet, Volume 1 of 2
57
3.2.11 Intel® Virtualization Technology (Intel® VT) for Directed
I/O (Intel® VT-d)
Refer to Section 3.1.2 Intel VT-d for detail.

3.3 Power and Performance Technologies

3.3.1 Intel® Hyper-Threading Technology (Intel® HT
Technology)
The processor supports Intel® Hyper-Threading Technology (Intel® HT Technology)
that allows an execution processor IA core to function as two logical processors. While
some execution resources such as caches, execution units, and buses are shared, each
logical processor has its own architectural state with its own set of general-purpose
registers and control registers. This feature should be enabled using the BIOS and
requires operating system support.

Note: Intel HT Technology may not be available on all SKUs.

3.3.2 Intel® Turbo Boost Technology 2.0

The Intel® Turbo Boost Technology 2.0 allows the processor IA core / processor
graphics core to opportunistically and automatically run faster than the processor IA
core base frequency / processor graphics base frequency if it is operating below power,
temperature, and current limits. The Intel Turbo Boost Technology 2.0 feature is
designed to increase performance of both multi-threaded and single-threaded
workloads.

Compared with previous generation products, Intel Turbo Boost Technology 2.0 will
increase the ratio of application power towards TDP and also allows to increase power
above TDP as high as PL2 for short periods of time. Thus, thermal solutions and
platform cooling that are designed to less than thermal design guidance might
experience thermal and performance issues since more applications will tend to run at
the maximum power limit for significant periods of time.

Note: Intel Turbo Boost Technology 2.0 may not be available on all SKUs.

3.3.2.1 Intel® Turbo Boost Technology 2.0 Frequency

To determine the highest performance frequency amongst active processor IA cores,
the processor takes the following into consideration:
• The number of processor IA cores operating in the C0 state.
• The estimated processor IA core current consumption and ICCMax register settings.
• The estimated package prior and present power consumption and turbo power
limits.
• The package temperature.
• Sustained turbo residencies at high voltages and temperature.

Any of these factors can affect the maximum frequency for a given workload. If the
power, current, Voltage or thermal limit is reached, the processor will automatically
reduce the frequency to stay within the PL1 value. Turbo processor frequencies are only

58 Datasheet, Volume 1 of 2
 active if the operating system is requesting the P0 state. If turbo frequencies are
limited the cause is logged in IA_PERF_LIMIT_REASONS register. For more information
on P-states and C-states, see Power Management.

3.3.3 Intel® Advanced Vector Extensions 2 (Intel® AVX2)

Intel® Advanced Vector Extensions 2.0 (Intel® AVX2) is the latest expansion of the
Intel instruction set. Intel AVX2 extends the Intel Advanced Vector Extensions (Intel
AVX) with 256-bit integer instructions, floating-point fused multiply add (FMA)
instructions, and gather operations. The 256-bit integer vectors benefit math, codec,
image, and digital signal processing software. FMA improves performance in face
detection, professional imaging, and high performance computing. Gather operations
increase vectorization opportunities for many applications. In addition to the vector
extensions, this generation of Intel processors adds new bit manipulation instructions
useful in compression, encryption, and general purpose software.
For more information on Intel AVX, see http://www.intel.com/software/avx

Intel Advanced Vector Extensions (Intel AVX) are designed to achieve higher
throughput to certain integer and floating point operation. Due to varying processor
power characteristics, utilizing AVX instructions may cause a) parts to operate below
the base frequency b) some parts with Intel Turbo Boost Technology 2.0 to not achieve
any or maximum turbo frequencies. Performance varies depending on hardware,
software and system configuration and you should consult your system manufacturer
for more information. Intel Advanced Vector Extensions refers to Intel AVX, Intel AVX2
or Intel AVX-512.
For more information on Intel AVX, see http://www-ssl.intel.com/content/www/us/en/
architecture-and-technology/turbo-boost/turbo-boost-technology.html

Note: Intel AVX2 Technology may not be available on all SKUs.

3.3.4 Intel® 64 Architecture x2APIC

The x2APIC architecture extends the xAPIC architecture that provides key mechanisms
for interrupt delivery. This extension is primarily intended to increase processor
addressability.

Specifically, x2APIC:
• Retains all key elements of compatibility to the xAPIC architecture:
— Delivery modes
— Interrupt and processor priorities
— Interrupt sources
— Interrupt destination types
• Provides extensions to scale processor addressability for both the logical and
physical destination modes
• Adds new features to enhance performance of interrupt delivery
• Reduces complexity of logical destination mode interrupt delivery on link based
architectures

Datasheet, Volume 1 of 2
59
 The key enhancements provided by the x2APIC architecture over xAPIC are the
following:
• Support for two modes of operation to provide backward compatibility and
extensibility for future platform innovations:
— In xAPIC compatibility mode, APIC registers are accessed through memory
mapped interface to a 4K-Byte page, identical to the xAPIC architecture.
— In x2APIC mode, APIC registers are accessed through Model Specific Register
(MSR) interfaces. In this mode, the x2APIC architecture provides significantly
increased processor addressability and some enhancements on interrupt
delivery.
• Increased range of processor addressability in x2APIC mode:
— Physical xAPIC ID field increases from 8 bits to 32 bits, allowing for interrupt
processor addressability up to 4G-1 processors in physical destination mode. A
processor implementation of x2APIC architecture can support fewer than 32-
bits in a software transparent fashion.
— Logical xAPIC ID field increases from 8 bits to 32 bits. The 32-bit logical x2APIC
ID is partitioned into two sub-fields – a 16-bit cluster ID and a 16-bit logical ID
within the cluster. Consequently, ((2^20) - 16) processors can be addressed in
logical destination mode. Processor implementations can support fewer than
16 bits in the cluster ID sub-field and logical ID sub-field in a software agnostic
fashion.
• More efficient MSR interface to access APIC registers:
— To enhance inter-processor and self-directed interrupt delivery as well as the
ability to virtualize the local APIC, the APIC register set can be accessed only
through MSR-based interfaces in x2APIC mode. The Memory Mapped IO
(MMIO) interface used by xAPIC is not supported in x2APIC mode.
• The semantics for accessing APIC registers have been revised to simplify the
programming of frequently-used APIC registers by system software. Specifically,
the software semantics for using the Interrupt Command Register (ICR) and End Of
Interrupt (EOI) registers have been modified to allow for more efficient delivery
and dispatching of interrupts.
• The x2APIC extensions are made available to system software by enabling the local
x2APIC unit in the “x2APIC” mode. To benefit from x2APIC capabilities, a new
operating system and a new BIOS are both needed, with special support for x2APIC
mode.
• The x2APIC architecture provides backward compatibility to the xAPIC architecture
and forward extendible for future Intel platform innovations.

Note: Intel x2APIC Technology may not be available on all SKUs.

For more information, see the Intel® 64 Architecture x2APIC Specification at http://
www.intel.com/products/processor/manuals/.

3.3.5 Power Aware Interrupt Routing (PAIR)

The processor includes enhanced power-performance technology that routes interrupts
to threads or processor IA cores based on their sleep states. As an example, for energy
savings, it routes the interrupt to the active processor IA cores without waking the
deep idle processor IA cores. For performance, it routes the interrupt to the idle (C1)
processor IA cores without interrupting the already heavily loaded processor IA cores.
This enhancement is mostly beneficial for high-interrupt scenarios like Gigabit LAN,
WLAN peripherals, and so on.

60 Datasheet, Volume 1 of 2
3.3.6 Intel® Transactional Synchronization Extensions
(Intel® TSX-NI)
Intel® Transactional Synchronization Extensions (Intel® TSX-NI) provides a set of
instruction set extensions that allow programmers to specify regions of code for
transactional synchronization. Programmers can use these extensions to achieve the
performance of fine-grain locking while actually programming using coarse-grain locks.
Details on Intel TSX-NI may be found in Intel® Architecture Instruction Set Extensions
Programming Reference.

Note: Intel TSX-NI may not be available on all SKUs.

3.4 Debug Technologies

3.4.1 Intel® Processor Trace
Intel® Processor Trace (Intel® PT) is a new tracing capability added to Intel
Architecture, for use in software debug and profiling. Intel PT provides the capability for
more precise software control flow and timing information, with limited impact to
software execution. This provides enhanced ability to debug software crashes, hangs,
or other anomalies, as well as responsiveness and short-duration performance issues.

Intel VTune™ Amplifier for Systems and the Intel System Debugger are part of Intel
System Studio 2015, which includes updates for new debug and trace features on this
latest platform, including Intel PT and Intel Trace Hub.

Datasheet, Volume 1 of 2
61
4 Power Management

This chapter provides information on the following power management topics:

• Advanced Configuration and Power Interface (ACPI) States
• Processor IA Core Power Management
• Integrated Memory Controller (IMC) Power Management
• PCI Express* Power Management
• Direct Media Interface (DMI) Power Management
• Processor Graphics Power Management

Datasheet, Volume 1 of 2
62
Figure 4-1. Processor Power States

G0 – Working

S0 – Processor powered on

C0 – Active mode

P0

Pn

C1 – Auto halt

C1E – Auto halt, low frequency, low voltage

C2 – Temporary state before C3 or deeper. Memory

path open

C3 – L1/L2 caches flush, clocks off

C6 – save core states before shutdown and PLL off

C7 – C6 + LLC may be flushed

C8 – C7 + LLC must be flushed

G1 – Sleeping

S3 cold – Sleep – Suspend To Ram (STR)

S4 – Hibernate – Suspend To Disk (STD), Wakeup on PCH

G2 – Soft Off

S5 – Soft Off – no power,Wakeup on PCH

G3 – Mechanical Off

* Note: Power states availability may vary between the different SKUs

63 Datasheet, Volume 1 of 2
Figure 4-2. Processor Package and IA Core C-States

CORE STATE
C0 C1 C1E C3 C6 C7 C8

PACKAGE STATE
One or more cores or GT executing instructions
C0
(Internal state) All cores in C3 or deeper and Processor Graphics in RC6, but constraints preventing C3 or deeper,
C2 or memory access received
C3 All cores in C3 or deeper and and Processor Graphics in RC6 , LLC may be flushed and turned off, memory in self
refresh, Uncore clocks stopped (expect Display), most Uncore voltages reduced.
C6 All cores and Processor Graphics in C6 or deeper, LLC is flushed and turned off, memory in self refresh,
all Uncore clocks stopped, most Uncore voltages reduced
C7 Package C6 + LLC may be flushed
C8 Package C7 + LLC must be flushed at once, Display engine still stays on

Package C8 + Most VRs reduced to 0V. VCCIO and VCCST stays on + Display PSR/OFF

Core behaves the same as Core C6 state

All core clocks are stopped, core state saved and voltage reduce to 0V
Cores flush L1/L2 into LLC, all core clocks are stopped
Core halted, most core clocks stopped and voltage reduced to Pn
Core halted, most core clocks stopped
Core is executing code

Possible combination of core/package states

Impossible combination of core/package states
Note: The “core state” relates to the core which is in the HIGHEST power state in the package (most active)

4.1 Advanced Configuration and Power Interface

(ACPI) States Supported
This section describes the ACPI states supported by the processor.

Table 4-1. System States

State Description

G0/S0 Full On

G1/S3-Cold Suspend-to-RAM (STR). Context saved to memory (S3-Hot is not supported by the
processor).

G1/S4 Suspend-to-Disk (STD). All power lost (except wake-up on PCH).

G2/S5 Soft off. All power lost (except wake-up on PCH). Total reboot.

G3 Mechanical off. All power removed from system.

Datasheet, Volume 1 of 2
64
Table 4-2. Processor IA Core / Package State Support
State Description

C0 Active mode, processor executing code.

C1 AutoHALT processor IA core state (package C0 state).

C1E AutoHALT processor IA core state with lowest frequency and voltage operating point
(package C0 state).

C2 All processor IA cores in C3 or deeper. Memory path open. Temporary state before Package
C3 or deeper.

C3 Processor IA execution cores in C3 or deeper, flush their L1 instruction cache, L1 data cache,
and L2 cache to the LLC shared cache. LLC may be flushed. Clocks are shut off to each core.

C6 Processor IA execution cores in this state save their architectural state before removing core
voltage. BCLK is off.

C7 Processor IA execution cores in this state behave similarly to the C6 state. If all execution
cores request C7, LLC ways may be flushed until it is cleared. If the entire LLC is flushed,
voltage will be removed from the LLC.

C8 C7 plus LLC should be flushed.

Table 4-3. Integrated Memory Controller (IMC) States

State Description

Power up CKE asserted. Active mode.

Pre-charge CKE de-asserted (not self-refresh) with all banks closed.

Power down

Active Power CKE de-asserted (not self-refresh) with minimum one bank active.
down

Self-Refresh CKE de-asserted using device self-refresh.

Table 4-4. PCI Express* Link States

State Description

L0 Full on – Active transfer state.

L1 Lowest Active Power Management – Longer exit latency

L3 Lowest power state (power-off) – Longest exit latency

Table 4-5. Direct Media Interface (DMI) States

State Description

L0 Full on – Active transfer state

L1 Lowest Active Power Management – Longer exit latency

L3 Lowest power state (power-off) – Longest exit latency

65 Datasheet, Volume 1 of 2
Table 4-6. G, S, and C Interface State Combinations
Global Processor
Sleep (S) Processor
(G) Package (C) System Clocks Description
State State
State State

G0 S0 C0 Full On On Full On

G0 S0 C1/C1E Auto-Halt On Auto-Halt

G0 S0 C3 Deep Sleep On Deep Sleep

G0 S0 C6/C7 Deep Power On Deep Power Down

Down

G0 S0 C8 Off On Deeper Power Down

G1 S3 Power off Off Off, except RTC Suspend to RAM

G1 S4 Power off Off Off, except RTC Suspend to Disk

G2 S5 Power off Off Off, except RTC Soft Off

G3 N/A Power off Off Power off Hard off

4.2 Processor IA Core Power Management

While executing code, Enhanced Intel SpeedStep Technology and Intel Speed
Shift® Technology optimizes the processor’s IA core frequency and voltage based on
workload. Each frequency and voltage operating point is defined by ACPI as a P-state.
When the processor is not executing code, it is idle. A low-power idle state is defined by
ACPI as a C-state. In general, deeper power C-states have longer entry and exit
latencies.

4.2.1 OS/HW controlled P-states

4.2.1.1 Enhanced Intel® SpeedStep® Technology
Enhanced Intel® SpeedStep® Technology enables OS to control and select P-state. The
following are the key features of Enhanced Intel SpeedStep Technology:
• Multiple frequency and voltage points for optimal performance and power
efficiency. These operating points are known as P-states.
• Frequency selection is software controlled by writing to processor MSRs. The
voltage is optimized based on the selected frequency and the number of active
processor IA cores.
— Once the voltage is established, the PLL locks on to the target frequency.
— All active processor IA cores share the same frequency and voltage. In a multi-
core processor, the highest frequency P-state requested among all active IA
cores is selected.
— Software-requested transitions are accepted at any time. If a previous
transition is in progress, the new transition is deferred until the previous
transition is completed.
• The processor controls voltage ramp rates internally to ensure glitch-free
transitions.
• Because there is low transition latency between P-states, a significant number of
transitions per-second are possible.

Datasheet, Volume 1 of 2
66
4.2.1.2 Intel® Speed Shift Technology
Intel Speed Shift Technology is an energy efficient method of frequency control by the
hardware rather than relying on OS control. OS is aware of available hardware P-states
and request a desired P-state or it can let Hardware determine the P-state. The OS
request is based on its workload requirements and awareness of processor capabilities.
Processor decision is based on the different system constraints for example: Workload
demand, thermal limits while taking into consideration the minimum and maximum
levels and activity window of performance requested by the operating system.

For more details, refer to the following document (see related documents section):
• Intel® 64 and IA-32 Architectures Software Developer’s Manual (SDM), volume 3B.

4.2.2 Low-Power Idle States

When the processor is idle, low-power idle states (C-states) are used to save power.
More power savings actions are taken for numerically higher C-states. However, deeper
C-states have longer exit and entry latencies. Resolution of C-states occur at the
thread, processor IA core, and processor package level. Thread-level C-states are
available if Intel Hyper-Threading Technology is enabled.

Caution: Long term reliability cannot be assured unless all the Low-Power Idle States are
enabled.
Figure 4-3. Idle Power Management Breakdown of the Processor IA Cores

Thread 0 Thread 1 Thread 0 Thread 1

Core 0 State Core N State

Processor Package State

While individual threads can request low-power C-states, power saving actions only
take place once the processor IA core C-state is resolved. processor IA core C-states
are automatically resolved by the processor. For thread and processor IA core C-states,
a transition to and from C0 state is required before entering any other C-state.

67 Datasheet, Volume 1 of 2
4.2.3 Requesting Low-Power Idle States
The primary software interfaces for requesting low-power idle states are through the
MWAIT instruction with sub-state hints and the HLT instruction (for C1 and C1E).
However, software may make C-state requests using the legacy method of I/O reads
from the ACPI-defined processor clock control registers, referred to as P_LVLx. This
method of requesting C-states provides legacy support for operating systems that
initiate C-state transitions using I/O reads.

For legacy operating systems, P_LVLx I/O reads are converted within the processor to
the equivalent MWAIT C-state request. Therefore, P_LVLx reads do not directly result in
I/O reads to the system. The feature, known as I/O MWAIT redirection, should be
enabled in the BIOS.

The BIOS can write to the C-state range field of the PMG_IO_CAPTURE MSR to restrict
the range of I/O addresses that are trapped and emulate MWAIT like functionality. Any
P_LVLx reads outside of this range do not cause an I/O redirection to MWAIT(Cx) like
request. They fall through like a normal I/O instruction.

When P_LVLx I/O instructions are used, MWAIT sub-states cannot be defined. The
MWAIT sub-state is always zero if I/O MWAIT redirection is used. By default,
P_LVLx I/O redirections enable the MWAIT 'break on EFLAGS.IF’ feature that triggers a
wake up on an interrupt, even if interrupts are masked by EFLAGS.IF.

4.2.4 Processor IA Core C-State Rules

The following are general rules for all processor IA core C-states, unless specified
otherwise:
• A processor IA core C-State is determined by the lowest numerical thread state
(such as Thread 0 requests C1E while Thread 1 requests C3 state, resulting in a
processor IA core C1E state). See the G, S, and C Interface State Combinations
table.
• A processor IA core transitions to C0 state when:
— An interrupt occurs
— There is an access to the monitored address if the state was entered using an
MWAIT/Timed MWAIT instruction
— The deadline corresponding to the Timed MWAIT instruction expires
• An interrupt directed toward a single thread wakes up only that thread.
• If any thread in a processor IA core is active (in C0 state), the core’s C-state will
resolve to C0.
• Any interrupt coming into the processor package may wake any processor IA core.
• A system reset re-initializes all processor IA cores.

processor IA core C0 State

The normal operating state of a processor IA core where code is being executed.

processor IA core C1/C1E State

C1/C1E is a low-power state entered when all threads within a processor IA core
execute a HLT or MWAIT(C1/C1E) instruction.

Datasheet, Volume 1 of 2
68
 A System Management Interrupt (SMI) handler returns execution to either Normal
state or the C1/C1E state. See the Intel 64 and IA-32 Architectures Software
Developer’s Manual for more information.

While a processor IA core is in C1/C1E state, it processes bus snoops and snoops from
other threads. For more information on C1E, see Section 4.2.5.

processor IA core C3 State

Individual threads of a processor IA core can enter the C3 state by initiating a P_LVL2
I/O read to the P_BLK or an MWAIT(C3) instruction. A processor IA core in C3 state
flushes the contents of its L1 instruction cache, L1 data cache, and L2 cache to the
shared LLC, while maintaining its architectural state. All processor IA core clocks are
stopped at this point. Because the processor IA core’s caches are flushed, the processor
does not wake any processor IA core that is in the C3 state when either a snoop is
detected or when another processor IA core accesses cacheable memory.

processor IA core C6 State

Individual threads of a processor IA core can enter the C6 state by initiating a P_LVL3
I/O read or an MWAIT(C6) instruction. Before entering processor IA core C6 state, the
processor IA core will save its architectural state to a dedicated SRAM. Once complete,
a processor IA core will have its voltage reduced to zero volts. During exit, the
processor IA core is powered on and its architectural state is restored.

processor IA core C7-C8 States

Individual threads of a processor IA core can enter the C7, C8 state by initiating a
P_LVL4, P_LVL5, P_LVL6, P_LVL7 I/O read (respectively) to the P_BLK or by an
MWAIT(C7/C8) instruction. The processor IA core C7-C8 state exhibits the same
behavior as the processor IA core C6 state.

C-State Auto-Demotion

In general, deeper C-states, such as C6 or C7, have long latencies and have higher
energy entry/exit costs. The resulting performance and energy penalties become
significant when the entry/exit frequency of a deeper C-state is high. Therefore,
incorrect or inefficient usage of deeper C-states have a negative impact on battery life
and idle power. To increase residency and improve battery life and idle power in deeper
C-states, the processor supports C-state auto-demotion.

There are two C-State auto-demotion options:

• C7/C6 to C3
• C7/C6/C3 To C1

The decision to demote a processor IA core from C6/C7 to C3 or C3/C6/C7 to C1 is

based on each processor IA core’s immediate residency history. Upon each processor IA
core C6/C7 request, the processor IA core C-state is demoted to C3 or C1 until a
sufficient amount of residency has been established. At that point, a processor IA core
is allowed to go into C3/C6 or C7. Each option can be run concurrently or individually. If
the interrupt rate experienced on a processor IA core is high and the processor IA core
is rarely in a deep C-state between such interrupts, the processor IA core can be
demoted to a C3 or C1 state. A higher interrupt pattern is required to demote a
processor IA core to C1 as compared to C3.

69 Datasheet, Volume 1 of 2
 This feature is disabled by default. BIOS should enable it in the
PMG_CST_CONFIG_CONTROL register. The auto-demotion policy is also configured by
this register.

4.2.5 Package C-States

The processor supports C0, C2, C3, C6, C7, C8 package states. The following is a
summary of the general rules for package C-state entry. These apply to all package C-
states, unless specified otherwise:
• A package C-state request is determined by the lowest numerical processor IA core
C-state amongst all processor IA cores.
• A package C-state is automatically resolved by the processor depending on the
processor IA core idle power states and the status of the platform components.
— Each processor IA core can be at a lower idle power state than the package if
the platform does not grant the processor permission to enter a requested
package C-state.
— The platform may allow additional power savings to be realized in the
processor.
— For package C-states, the processor is not required to enter C0 before entering
any other C-state.
— Entry into a package C-state may be subject to auto-demotion – that is, the
processor may keep the package in a deeper package C-state then requested
by the operating system if the processor determines, using heuristics, that the
deeper C-state results in better power/performance.

The processor exits a package C-state when a break event is detected. Depending on
the type of break event, the processor does the following:
• If a processor IA core break event is received, the target processor IA core is
activated and the break event message is forwarded to the target processor IA
core.
— If the break event is not masked, the target processor IA core enters the
processor IA core C0 state and the processor enters package C0.
— If the break event is masked, the processor attempts to re-enter its previous
package state.
• If the break event was due to a memory access or snoop request,
— But the platform did not request to keep the processor in a higher package C-
state, the package returns to its previous C-state.
— And the platform requests a higher power C-state, the memory access or snoop
request is serviced and the package remains in the higher power C-state.

Datasheet, Volume 1 of 2
70
Figure 4-4. Package C-State Entry and Exit

Package C0

Package
C2

Package C3 Package C6 Package C7 Package C8

Package C0

This is the normal operating state for the processor. The processor remains in the
normal state when at least one of its processor IA cores is in the C0 or C1 state or when
the platform has not granted permission to the processor to go into a low-power state.
Individual processor IA cores may be in deeper power idle states while the package is
in C0 state.

Package C2 State

Package C2 state is an internal processor state that cannot be explicitly requested by

software. A processor enters Package C2 state when either:
• All processor IA cores have requested a C3 or deeper power state and all graphics
processor IA cores requested are in RC6, but constraints (LTR, programmed timer
events in the near future, and so forth) prevent entry to any state deeper than C2
state.
• Or, all processor IA cores have requested a C3 or deeper power state and all
graphics processor IA cores requested are in RC6 and a memory access request is
received. Upon completion of all outstanding memory requests, the processor
transitions back into a deeper package C-state.

Package C3 State

A processor enters the package C3 low-power state when:

• At least one processor IA core is in the C3 state.
• The other processor IA cores are in a C3 or deeper power state, and the processor
has been granted permission by the platform.
• The platform has not granted a request to a package C6/C7 state or deeper state
but has allowed a package C3 state.

71 Datasheet, Volume 1 of 2
 In package C3-state, the LLC shared cache is valid.

Package C6 State

A processor enters the package C6 low-power state when:

• At least one processor IA core is in the C6 state.
• The other processor IA cores are in a C6 or deeper power state, and the processor
has been granted permission by the platform.
• The platform has not granted a package C7 or deeper request but has allowed a C6
package state.

In package C6 state, all processor IA cores have saved their architectural state and
have had their voltages reduced to zero volts. It is possible the LLC shared cache is
flushed and turned off in package C6 state.

Package C7 State

The processor enters the package C7 low-power state when all processor IA cores are
in the C7 or deeper state and the operating system may request that the LLC will be
flushed.

processor IA core break events are handled the same way as in package C3 or C6.

Upon exit of the package C7 state, the LLC will be partially enabled once a processor IA
core wakes up if it was fully flushed, and will be fully enabled once the processor has
stayed out of C7 for a preset amount of time. Power is saved since this prevents the
LLC from being re-populated only to be immediately flushed again. Some VRs are
reduce to 0V.

Package C8 State

The processor enters C8 states when the processor IA cores lower numerical state is
C8.

The C8 state is similar to C7 state, but in addition, the LLC is flushed in a single step,
Vcc and VccGT are reduced to 0V. The display engine stays on.

Dynamic LLC Sizing

When all processor IA cores request C7 or deeper C-state, internal heuristics

dynamically flushes the LLC. Once the processor IA cores enter a deep C-state,
depending on their MWAIT sub-state request, the LLC is either gradually flushed N-
ways at a time or flushed all at once. Upon the processor IA cores exiting to C0 state,
the LLC is gradually expanded based on internal heuristics.

4.2.6 Package C-States and Display Resolutions

The integrated graphics engine has the frame buffer located in system memory. When
the display is updated, the graphics engine fetches display data from system memory.
Different screen resolutions and refresh rates have different memory latency
requirements. These requirements may limit the deepest Package C-state the
processor can enter. Other elements that may affect the deepest Package C-state
available are the following:
• Display is on or off

Datasheet, Volume 1 of 2
72
 • Single or multiple displays
• Native or non-native resolution
• Panel Self Refresh (PSR) technology

Note: Display resolution is not the only factor influencing the deepest Package C-state the
processor can get into. Device latencies, interrupt response latencies, and core C-states
are among other factors that influence the final package C-state the processor can
enter.

The following table lists display resolutions and deepest available package C-State.The
display resolutions are examples using common values for blanking and pixel rate.
Actual results will vary. The table shows the deepest possible Package C-state.System
workload, system idle, and AC or DC power also affect the deepest possible Package C-
state.

Table 4-7. Deepest Package C-State Available

S Processor Line1,2,3

Number of PSR PSR

Resolution
Displays Enabled Disabled

800x600 60Hz Single PC8 PC8

1024x768 60Hz Single PC8 PC8

1280x1024 60Hz Single PC8 PC8

1920x1080 60Hz Single PC8 PC8

1920x1200 60Hz Single PC8 PC8

1920x1440 60Hz Single PC8 PC8

2048x1536 60Hz Single PC8 PC8

2560x1600 60Hz Single PC8 PC8

2560x1920 60Hz Single PC8 PC8

2880x1620 60Hz Single PC8 PC8

2880x1800 60Hz Single PC8 PC8

3200x1800 60Hz Single PC8 PC8

3200*2000 60Hz Single PC8 PC8

3840x2160 60Hz Single PC8 PC8

4096x2160 60Hz Single PC8 PC8

Notes:
1. All Deep states are with Display ON.
2. The deepest C-state has variance, dependent on various parameters, such software and Platform devices.
3. S-Processor Line is limited to PC8 by design.

73 Datasheet, Volume 1 of 2
4.3 Integrated Memory Controller (IMC) Power
Management
The main memory is power managed during normal operation and in low-power ACPI
C-states.

4.3.1 Disabling Unused System Memory Outputs

Any system memory (SM) interface signal that goes to a memory in which it is not
connected to any actual memory devices (such as SODIMM connector is unpopulated,
or is single-sided) is tri-stated. The benefits of disabling unused SM signals are:
• Reduced power consumption.
• Reduced possible overshoot/undershoot signal quality issues seen by the processor
I/O buffer receivers caused by reflections from potentially un-terminated
transmission lines.

When a given rank is not populated, the corresponding control signals (CLK_P/CLK_N/
CKE/ODT/CS) are not driven.

At reset, all rows should be assumed to be populated, until it can be proven that they
are not populated. This is due to the fact that when CKE is tri-stated with a DRAMs
present, the DRAMs are not ensured to maintain data integrity. CKE tri-state should be
enabled by BIOS where appropriate, since at reset all rows should be assumed to be
populated.

4.3.2 DRAM Power Management and Initialization

The processor implements extensive support for power management on the memory
interface.Each channel drives 4 CKE pins, one per rank.

The CKE is one of the power-saving means. When CKE is off, the internal DDR clock is
disabled and the DDR power is reduced. The power-saving differs according to the
selected mode and the DDR type used. For more information, refer to the IDD table in
the DDR specification.

The processor supports four different types of power-down modes in package C0 state.
The different power-down modes can be enabled through configuring PM PDWN
configuration register. The type of CKE power-down can be configured through
PDWN_mode (bits 15:12) and the idle timer can be configured through
PDWN_idle_counter (bits 11:0). The different power-down modes supported are:
• No power-down (CKE disable)
• Active power-down (APD): This mode is entered if there are open pages when
de-asserting CKE. In this mode the open pages are retained. Power-saving in this
mode is the lowest. Power consumption of DDR is defined by IDD3P. Exiting this
mode is fined by tXP – small number of cycles. For this mode, DRAM DLL should be
on.
• PPD/DLL-off: In this mode the data-in DLLs on DDR are off. Power-saving in this
mode is the best among all power modes. Power consumption is defined by IDD2P.
Exiting this mode is defined by tXP, but also tXPDLL (10–20 according to DDR type)
cycles until first data transfer is allowed. For this mode, DRAM DLL should be off.
• Precharged power-down (PPD): This mode is entered if all banks in DDR are
precharged when de-asserting CKE. Power-saving in this mode is intermediate –

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 better than APD, but less than DLL-off. Power consumption is defined by IDD2P.
Exiting this mode is defined by tXP. The difference from APD mode is that when
waking-up, all page-buffers are empty.) The LPDDR does not have a DLL. As a
result, the power savings are as good as PPD/DDL-off but will have lower exit
latency and higher performance.

The CKE is determined per rank, whenever it is inactive. Each rank has an idle counter.
The idle-counter starts counting as soon as the rank has no accesses, and if it expires,
the rank may enter power-down while no new transactions to the rank arrives to
queues. The idle-counter begins counting at the last incoming transaction arrival.

It is important to understand that since the power-down decision is per rank, the IMC
can find many opportunities to power down ranks, even while running memory
intensive applications; the savings are significant (may be few Watts, according to DDR
specification). This is significant when each channel is populated with more ranks.

Selection of power modes should be according to power-performance or thermal trade-

off of a given system:
• When trying to achieve maximum performance and power or thermal consideration
is not an issue: use no power-down
• In a system which tries to minimize power-consumption, try using the deepest
power-down mode possible – PPD/DLL-off with a low idle timer value
• In high-performance systems with dense packaging (that is, tricky thermal design)
the power-down mode should be considered in order to reduce the heating and
avoid DDR throttling caused by the heating.

The default value that BIOS configures in PM PDWN configuration register is 6080 –
that is, PPD/DLL-off mode with idle timer of 0x80, or 128 DCLKs. This is a balanced
setting with deep power-down mode and moderate idle timer value.

The idle timer expiration count defines the # of DCLKs that a rank is idle that causes
entry to the selected power mode. As this timer is set to a shorter time the IMC will
have more opportunities to put the DDR in power-down. There is no BIOS hook to set
this register. Customers choosing to change the value of this register can do it by
changing it in the BIOS. For experiments, this register can be modified in real time if
BIOS does not lock the IMC registers.

4.3.2.1 Initialization Role of CKE

During power-up, CKE is the only input to the SDRAM that has its level recognized
(other than the reset pin) once power is applied. It should be driven LOW by the DDR
controller to make sure the SDRAM components float DQ and DQS during power-up.
CKE signals remain LOW (while any reset is active) until the BIOS writes to a
configuration register. Using this method, CKE is ensured to remain inactive for much
longer than the specified 200 micro-seconds after power and clocks to SDRAM devices
are stable.

4.3.2.2 Conditional Self-Refresh

During S0 idle state, system memory may be conditionally placed into self-refresh state
when the processor is in package C3 or deeper power state. Refer to Section 4.6.1.1 for
more details on conditional self-refresh with Intel HD Graphics enabled.

75 Datasheet, Volume 1 of 2
 When entering the S3 – Suspend-to-RAM (STR) state or S0 conditional self-refresh, the
processor IA core flushes pending cycles and then enters SDRAM ranks that are not
used by the processor graphics into self-refresh. The CKE signals remain LOW so the
SDRAM devices perform self-refresh.

The target behavior is to enter self-refresh for package C3 or deeper power states as
long as there are no memory requests to service.

Table 4-8. Targeted Memory State Conditions

State Memory State with Processor Graphics Memory State with External Graphics

C0, C1, C1E Dynamic memory rank power-down based on Dynamic memory rank power-down based on
idle conditions. idle conditions.

C3, C6, C7 or If the processor graphics engine is idle and If there are no memory requests, then enter
deeper there are no pending display requests, then self-refresh. Otherwise use dynamic memory
enter self-refresh. Otherwise use dynamic rank power-down based on idle conditions.
memory rank power-down based on idle
conditions.

S3 Self-Refresh Mode Self-Refresh Mode

S4 Memory power-down (contents lost) Memory power-down (contents lost)

4.3.2.3 Dynamic Power-Down

Dynamic power-down of memory is employed during normal operation. Based on idle
conditions, a given memory rank may be powered down. The IMC implements
aggressive CKE control to dynamically put the DRAM devices in a power-down state.
The processor IA core controller can be configured to put the devices in active power-
down (CKE de-assertion with open pages) or precharge power-down (CKE de-assertion
with all pages closed). Precharge power-down provides greater power savings but has
a bigger performance impact, since all pages will first be closed before putting the
devices in power-down mode.

If dynamic power-down is enabled, all ranks are powered up before doing a refresh
cycle and all ranks are powered down at the end of refresh.

4.3.2.4 DRAM I/O Power Management

Unused signals should be disabled to save power and reduce electromagnetic
interference. This includes all signals associated with an unused memory channel.
Clocks, CKE, ODT and CS signals are controlled per DIMM rank and will be powered
down for unused ranks.

The I/O buffer for an unused signal should be tri-stated (output driver disabled), the
input receiver (differential sense-amp) should be disabled, and any DLL circuitry
related ONLY to unused signals should be disabled. The input path should be gated to
prevent spurious results due to noise on the unused signals (typically handled
automatically when input receiver is disabled).

4.3.3 DDR Electrical Power Gating (EPG)

The DDR I/O of the processor supports Electrical Power Gating (DDR-EPG) while the
processor is at C3 or deeper power state.

In C3 or deeper power state, the processor internally gates VDDQ for the majority of
the logic to reduce idle power while keeping all critical DDR pins such as CKE and VREF
in the appropriate state.

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 In C7 or deeper power state, the processor internally gates VCCIO for all non-critical
state to reduce idle power.

In S3 or C-state transitions, the DDR does not go through training mode and will
restore the previous training information.

4.3.4 Power Training

BIOS MRC performing Power Training steps to reduce DDR I/O power while keeping
reasonable operational margins, still ensuring platform operation. The algorithms
attempt to weaken ODT, driver strength and the related buffers parameters both on the
MC and the DRAM side and find the best possible trade-off between the total I/O power
and the operational margins using advanced mathematical models.

4.4 PCI Express* Power Management

• Active power management support using L1 state.
• All inputs and outputs disabled in L2/L3 Ready state.

Note: Processor PEG-PCIe interface does not support Hot-Plug.

Note: Hot Plug like* is only supported at Processor PEG-PCIe using Thunderbolt Device. *
Turning Thunderbolt™ power on and Off electrically RTD3 Like

Note: The PCI Express* and DMI interfaces are present only in 2-Chip platform processors.

An increase in power consumption may be observed when PCI Express* ASPM

capabilities are disabled.

Table 4-9. Package C-States with PCIe* Link States dependencies

PEG/DMI L-State Description Package C-State

DMI L1 Higher latency, lower power “standby” state PC6-PC8

PEG L1, L2, L1- Higher latency, lower power “standby” state PC6-PC7
Disabled, L2 – Auxiliary-powered Link, deep-energy-saving
NDA (no state.
device
Disabled - The intent of the Disabled state is to
attached)
allow a configured Link to be disabled until directed
or Electrical Idle is exited (i.e., due to a hot removal
and insertion) after entering Disabled.
NDA- no physical device is attached on PEG port

PEG L2, Disabled, L2 – Auxiliary-powered Link, deep-energy-saving PC8-PC8

NDA (no state.
device Disabled - The intent of the Disabled state is to
attached) allow a configured Link to be disabled until directed
or Electrical Idle is exited (i.e., due to a hot removal
and insertion) after entering Disabled.
NDA- no physical device is attached on PEG port

4.5 Direct Media Interface (DMI) Power Management

• Active power management support using L1 state.

Note: The PCI Express* and DMI interfaces are present only in 2-Chip platform processors.

77 Datasheet, Volume 1 of 2
4.6 Processor Graphics Power Management
4.6.1 Memory Power Savings Technologies
4.6.1.1 Intel® Rapid Memory Power Management (Intel® RMPM)
Intel® Rapid Memory Power Management (Intel® RMPM) conditionally places memory
into self-refresh when the processor is in package C3 or deeper power state to allow
the system to remain in the deeper power states longer for memory not reserved for
graphics memory. Intel RMPM functionality depends on graphics/display state (relevant
only when processor graphics is being used), as well as memory traffic patterns
generated by other connected I/O devices.

4.6.1.2 Intel® Smart 2D Display Technology (Intel® S2DDT)

Intel S2DDT reduces display refresh memory traffic by reducing memory reads
required for display refresh. Power consumption is reduced by less accesses to the IMC.
Intel S2DDT is only enabled in single pipe mode.

Intel S2DDT is most effective with:

• Display images well suited to compression, such as text windows, slide shows, and
so on. Poor examples are 3D games.
• Static screens such as screens with significant portions of the background showing
2D applications, processor benchmarks, and so on, or conditions when the
processor is idle. Poor examples are full-screen 3D games and benchmarks that flip
the display image at or near display refresh rates.

4.6.2 Display Power Savings Technologies

4.6.2.1 Intel® (Seamless & Static) Display Refresh Rate
Switching (DRRS) with eDP* Port
Intel DRRS provides a mechanism where the monitor is placed in a slower refresh rate
(the rate at which the display is updated). The system is smart enough to know that
the user is not displaying either 3D or media like a movie where specific refresh rates
are required. The technology is very useful in an environment such as a plane where
the user is in battery mode doing E-mail, or other standard office applications. It is also
useful where the user may be viewing web pages or social media sites while in battery
mode.

4.6.2.2 Intel® Automatic Display Brightness

Intel Automatic Display Brightness feature dynamically adjusts the backlight brightness
based upon the current ambient light environment. This feature requires an additional
sensor to be on the panel front. The sensor receives the changing ambient light
conditions and sends the interrupts to the Intel Graphics driver. As per the change in
Lux, (current ambient light illuminance), the new backlight setting can be adjusted
through BLC. The converse applies for a brightly lit environment. Intel Automatic
Display Brightness increases the backlight setting.

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4.6.2.3 Smooth Brightness
The Smooth Brightness feature is the ability to make fine grained changes to the screen
brightness. All Windows* 10 system that support brightness control are required to
support Smooth Brightness control and it should be supporting 101 levels of brightness
control. Apart from the Graphics driver changes, there may be few System BIOS
changes required to make this feature functional.

4.6.2.4 Intel® Display Power Saving Technology (Intel® DPST) 6.0

The Intel DPST technique achieves backlight power savings while maintaining a good
visual experience. This is accomplished by adaptively enhancing the displayed image
while decreasing the backlight brightness simultaneously. The goal of this technique is
to provide equivalent end-user-perceived image quality at a decreased backlight power
level.
1. The original (input) image produced by the operating system or application is
analyzed by the Intel DPST subsystem. An interrupt to Intel DPST software is
generated whenever a meaningful change in the image attributes is detected. (A
meaningful change is when the Intel DPST software algorithm determines that
enough brightness, contrast, or color change has occurred to the displaying images
that the image enhancement and backlight control needs to be altered.)
2. Intel DPST subsystem applies an image-specific enhancement to increase image
contrast, brightness, and other attributes.
3. A corresponding decrease to the backlight brightness is applied simultaneously to
produce an image with similar user-perceived quality (such as brightness) as the
original image.

Intel DPST 6.0 has improved the software algorithms and has minor hardware changes
to better handle backlight phase-in and ensures the documented and validated method
to interrupt hardware phase-in.

4.6.2.5 Panel Self-Refresh 2 (PSR 2)

Panel Self-Refresh feature allows the Processor Graphics core to enter low-power state
when the frame buffer content is not changing constantly. This feature is available on
panels capable of supporting Panel Self-Refresh. Apart from being able to support, the
eDP* panel should be eDP 1.4 compliant. PSR 2 adds partial frame updates and
requires an eDP 1.4 compliant panel.
PSR2 is limited to 3200x2000@60 Maximum display resolution.

4.6.2.6 Low-Power Single Pipe (LPSP)

Low-power single pipe is a power conservation feature that helps save power by
keeping the inactive pipes powered OFF. This feature is enabled only in a single display
configuration without any scaling functionalities. This feature is supported from 4th
Generation Intel® Core™ processor family onwards. LPSP is achieved by keeping a
single pipe enabled during eDP* only with minimal display pipeline support. This
feature is panel independent and works with any eDP panel (port A) in single display
mode.

79 Datasheet, Volume 1 of 2
4.6.3 Processor Graphics Core Power Savings Technologies
4.6.3.1 Intel® Graphics Dynamic Frequency
Intel Turbo Boost Technology 2.0 is the ability of the processor IA cores and graphics
(Graphics Dynamic Frequency) cores to opportunistically increase frequency and/or
voltage above the guaranteed processor and graphics frequency for the given part.
Intel Graphics Dynamic Frequency is a performance feature that makes use of unused
package power and thermals to increase application performance. The increase in
frequency is determined by how much power and thermal budget is available in the
package, and the application demand for additional processor or graphics performance.
The processor IA core control is maintained by an embedded controller. The graphics
driver dynamically adjusts between P-States to maintain optimal performance, power,
and thermals. The graphics driver will always place the graphics engine in its lowest
possible P-State. Intel Graphics Dynamic Frequency requires BIOS support. Additional
power and thermal budget should be available.

4.6.3.2 Intel® Graphics Render Standby Technology (Intel® GRST)

The final power savings technology from Intel happens while the system is asleep. This
is another technology where the voltage is adjusted down. For RC6 the voltage is
adjusted very low, or very close to zero, what may reduced power by over 1000.

4.6.3.3 Dynamic FPS (DFPS)

Dynamic FPS (DFPS) or dynamic frame-rate control is a runtime feature for improving
power-efficiency for 3D workloads. Its purpose is to limit the frame-rate of full screen
3D applications without compromising on user experience. By limiting the frame rate,
the load on the graphics engine is reduced, giving an opportunity to run the Processor
Graphics at lower speeds, resulting in power savings. This feature works in both AC/DC
modes.

4.7 Voltage Optimization

Voltage Optimization opportunistically provides reduction in power consumption, that
is, a boost in performance at a given PL1. Over time the benefit is reduced. There is no
change to base frequency or turbo frequency. During system validation and tuning, this
feature should be disabled to reflect processor power and performance that is expected
over time.

This feature is available on selected SKUs.

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5 Thermal Management

5.1 Processor Thermal Management

The thermal solution provides both component-level and system-level thermal
management. To allow optimal operation and long-term reliability of Intel processor-
based systems, the system/processor thermal solution should be designed so that the
processor:
• Bare Die Parts: Remains below the maximum junction temperature (TjMAX)
specification at the maximum thermal design power (TDP).
• Lidded Parts: Remains below the maximum case temperature (Tcmax) specification
at the maximum thermal design power.
• Conforms to system constraints, such as system acoustics, system skin-
temperatures, and exhaust-temperature requirements.

Caution: Thermal specifications given in this chapter are on the component and package level
and apply specifically to the processor. Operating the processor outside the specified
limits may result in permanent damage to the processor and potentially other
components in the system.

5.1.1 Thermal Considerations

The processor TDP is the maximum sustained power that should be used for design of
the processor thermal solution. TDP is a power dissipation and component temperature
operating condition limit, specified in this document, that is validated during
manufacturing for the base configuration when executing a near worst case
commercially available workload as specified by Intel for the SKU segment. TDP may be
exceeded for short periods of time or if running a very high power workload.

To allow the optimal operation and long-term reliability of Intel processor-based

systems, the processor must remain within the minimum and maximum component
temperature specifications. For lidded parts, the appropriate case temperature (TCASE)
specifications is defined by the applicable thermal profile. For bare die parts, the
component temperature specification is the applicable TjMAX.

Thermal solutions not designed to provide this level of thermal capability may affect the
long-term reliability of the processor and system.

The processor integrates multiple processing IA cores, graphics cores on a single

package. This may result in power distribution differences across the package and
should be considered when designing the thermal solution.

Intel Turbo Boost Technology 2.0 allows processor IA cores to run faster than the base
frequency. It is invoked opportunistically and automatically as long as the processor is
conforming to its temperature, voltage, power delivery and current control limits. When
Intel Turbo Boost Technology 2.0 is enabled:
• Applications are expected to run closer to TDP more often as the processor will
attempt to maximize performance by taking advantage of estimated available
energy budget in the processor package.

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81
 • The processor may exceed the TDP for short durations to utilize any available
thermal capacitance within the thermal solution. The duration and time of such
operation can be limited by platform runtime configurable registers within the
processor.
• Graphics peak frequency operation is based on the assumption of only one of the
graphics domains (GT/GTx) being active. This definition is similar to the IA core
Turbo concept, where peak turbo frequency can be achieved when only one IA core
is active. Depending on the workload being applied and the distribution across the
graphics domains the user may not observe peak graphics frequency for a given
workload or benchmark.
• Thermal solutions and platform cooling that are designed to less than thermal
design guidance may experience thermal and performance issues.

Note: Intel Turbo Boost Technology 2.0 availability may vary between the different SKUs.

5.1.2 Intel® Turbo Boost Technology 2.0 Power Monitoring

When operating in turbo mode, the processor monitors its own power and adjusts the
processor and graphics frequencies to maintain the average power within limits over a
thermally significant time period. The processor estimates the package power for all
components on package. In the event that a workload causes the temperature to
exceed program temperature limits, the processor will protect itself using the Adaptive
Thermal Monitor.

5.1.3 Intel® Turbo Boost Technology 2.0 Power Control

Illustration of Intel® Turbo Boost Technology 2.0 power control is shown in the
following sections and figures. Multiple controls operate simultaneously allowing
customization for multiple system thermal and power limitations. These controls allow
for turbo optimizations within system constraints and are accessible using MSR, MMIO,
or PECI interfaces (see the appropriate processor Turbo Implementation Guide for more
information).

5.1.3.1 Package Power Control

The package power control settings of PL1, PL2, PL3, PL4 and Tau allow the designer to
configure Intel Turbo Boost Technology 2.0 to match the platform power delivery and
package thermal solution limitations.
• Power Limit 1 (PL1): A threshold for average power that will not exceed -
recommend to set to equal TDP power. PL1 should not be set higher than thermal
solution cooling limits.
• Power Limit 2 (PL2): A threshold that if exceeded, the PL2 rapid power limiting
algorithms will attempt to limit the spike above PL2.
• Power Limit 3 (PL3): A threshold that if exceeded, the PL3 rapid power limiting
algorithms will attempt to limit the duty cycle of spikes above PL3 by reactively
limiting frequency. This is an optional setting
• Power Limit 4 (PL4): A limit that will not be exceeded, the PL4 power limiting
algorithms will preemptively limit frequency to prevent spikes above PL4.
• Turbo Time Parameter (Tau): An averaging constant used for PL1 exponential
weighted moving average (EWMA) power calculation.

82 Datasheet, Volume 1 of 2
Note: Implementation of Intel Turbo Boost Technology 2.0 only requires configuring PL1, PL1
Tau, and PL2.

Note: PL3 and PL4 are disabled by default.

Figure 5-1. Package Power Control

5.1.3.2 Platform Power Control

The processor supports Psys (Platform Power) to enhance processor power
management. The Psys signal needs to be sourced from a compatible charger circuit
and routed to the IMVP8 (voltage regulator). This signal will provide the total thermally
relevant platform power consumption (processor and rest of platform) via SVID to the
processor.

When the Psys signal is properly implemented, the system designer can utilize the
package power control settings of PsysPL1/Tau, PsysPL2 and PsysPL3 for additional
manageability to match the platform power delivery and platform thermal solution
limitations for Intel Turbo Boost Technology 2.0. The operation of the PsysPL1/tau,
PsysPL2 and PsysPL3 is analogous to the processor power limits described in
Section 5.1.3.1.
• Platform Power Limit 1 (PsysPL1): A threshold for average platform power that will
not be exceeded - recommend to set to equal platform thermal capability.
• Platform Power Limit 2 (PsysPL2): A threshold that if exceeded, the PsysPL2 rapid
power limiting algorithms will attempt to limit the spikes above PsysPL2.
• Platform Power Limit 3 (PsysPL3): A threshold that if exceeded, the PsysPL3 rapid
power limiting algorithms will attempt to limit the duty cycle of spikes above
PsysPL3 by reactively limiting frequency.
• PsysPL1 Tau: An averaging constant used for PsysPL1 exponential weighted moving
average (EWMA) power calculation.
• The Psys signal and associated power limits / Tau are optional for the system
designer and disabled by default.
• The Psys data will not include power consumption for charging.

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83
5.1.3.3 Turbo Time Parameter (Tau)
Turbo Time Parameter (Tau) is a mathematical parameter (units of seconds) that
controls the Intel Turbo Boost Technology 2.0 algorithm. During a maximum power
turbo event, the processor could sustain PL2 for a duration longer than the Turbo Time
Parameter. If the power value and/or Turbo Time Parameter is changed during runtime,
it may take some time based on the new Turbo Time Parameter level for the algorithm
to settle at the new control limits. The time varies depending on the magnitude of the
change, power limits, and other factors. There is an individual Turbo Time Parameter
associated with Package Power Control and Platform Power Control.

5.1.4 Configurable TDP (cTDP) and Low-Power Mode

Configurable TDP (cTDP) and Low-Power Mode (LPM) form a design option where the
processor's behavior and package TDP are dynamically adjusted to a desired system
performance and power envelope. Configurable TDP and Low-Power Mode technologies
offer opportunities to differentiate system design while running active workloads on
select processor SKUs through scalability, configuration and adaptability. The scenarios
or methods by which each technology is used are customizable but typically involve
changes to PL1 and associated frequencies for the scenario with a resultant change in
performance depending on system's usage. Either technology can be triggered by (but
are not limited to) changes in OS power policies or hardware events such as docking a
system, flipping a switch or pressing a button. cTDP and LPM are designed to be
configured dynamically and do not require an operating system reboot.

Note: Configurable TDP and Low-Power Mode technologies are not battery life improvement
technologies.

5.1.4.1 Configurable TDP

Note: Configurable TDP availability may vary between the different SKUs.

With cTDP, the processor is now capable of altering the maximum sustained power with
an alternate processor IA core base frequency. Configurable TDP allows operation in
situations where extra cooling is available or situations where a cooler and quieter
mode of operation is desired. Configurable TDP can be enabled using Intel’s DPTF driver
or through HW/EC firmware. Enabling cTDP using the DPTF driver is recommended as
Intel does not provide specific application or EC source code.

cTDP consists of three modes as shown in the following table.

Table 5-1. Configurable TDP Modes (Sheet 1 of 2)

Mode Description

Base The average power dissipation and junction temperature operating condition limit,
specified in Table 5-2, Table 5-3 and Table 5-5 for the SKU Segment and Configuration,
for which the processor is validated during manufacturing when executing an associated
Intel-specified high-complexity workload at the processor IA core frequency
corresponding to the configuration and SKU.

TDP-Up The SKU-specific processor IA core frequency where manufacturing confirms logical
functionality within the set of operating condition limits specified for the SKU segment
and Configurable TDP-Up configuration in Table 5-2, Table 5-3 and Table 5-5. The
Configurable TDP-Up Frequency and corresponding TDP is higher than the processor IA
core Base Frequency and SKU Segment Base TDP.

84 Datasheet, Volume 1 of 2
Table 5-1. Configurable TDP Modes (Sheet 2 of 2)
Mode Description

TDP-Down The processor IA core frequency where manufacturing confirms logical functionality
within the set of operating condition limits specified for the SKU segment and
Configurable TDP-Down configuration in Table 5-2, Table 5-3 and Table 5-5. The
Configurable TDP-Down Frequency and corresponding TDP is lower than the processor IA
core Base Frequency and SKU Segment Base TDP.

In each mode, the Intel Turbo Boost Technology 2.0 power limits are reprogrammed
along with a new OS controlled frequency range. The DPTF driver assists in all these
operations. The cTDP mode does not change the max per-processor IA core turbo
frequency.

5.1.4.2 Low-Power Mode

Low-Power Mode (LPM) can provide cooler and quieter system operation. By combining
several active power limiting techniques, the processor can consume less power while
running at equivalent low frequencies. Active power is defined as processor power
consumed while a workload is running and does not refer to the power consumed
during idle modes of operation. LPM is only available using the Intel DPTF driver.

5.1.5 Thermal Management Features

Occasionally the processor may operate in conditions that are near to its maximum
operating temperature. This can be due to internal overheating or overheating within
the platform. In order to protect the processor and the platform from thermal failure,
several thermal management features exist to reduce package power consumption and
thereby temperature in order to remain within normal operating limits. Furthermore,
the processor supports several methods to reduce memory power.

5.1.5.1 Adaptive Thermal Monitor

The purpose of the Adaptive Thermal Monitor is to reduce processor IA core power
consumption and temperature until it operates below its maximum operating
temperature. Processor IA core power reduction is achieved by:
• Adjusting the operating frequency (using the processor IA core ratio multiplier) and
voltage.
• Modulating (starting and stopping) the internal processor IA core clocks (duty
cycle).

The Adaptive Thermal Monitor can be activated when the package temperature,
monitored by any digital thermal sensor (DTS), meets its maximum operating
temperature. The maximum operating temperature implies maximum junction
temperature TjMAX.

Reaching the maximum operating temperature activates the Thermal Control Circuit
(TCC). When activated the TCC causes both the processor IA core and graphics core to
reduce frequency and voltage adaptively. The Adaptive Thermal Monitor will remain
active as long as the package temperature remains at its specified limit. Therefore, the
Adaptive Thermal Monitor will continue to reduce the package frequency and voltage
until the TCC is de-activated.

TjMAX is factory calibrated and is not user configurable. The default value is software
visible in the TEMPERATURE_TARGET (0x1A2) MSR, bits [23:16].

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85
 The Adaptive Thermal Monitor does not require any additional hardware, software
drivers, or interrupt handling routines. It is not intended as a mechanism to maintain
processor thermal control to PL1 = TDP. The system design should provide a thermal
solution that can maintain normal operation when PL1 = TDP within the intended usage
range.

Adaptive Thermal Monitor protection is always enabled.

5.1.5.1.1 TCC Activation Offset

TCC Activation Offset can be set as an offset from the maximum allowed component
temperature to lower the onset of TCC and Adaptive Thermal Monitor. In addition, the
processor has added an optional time window (Tau) to manage processor performance
at the TCC Activation offset value via an EWMA (Exponential Weighted Moving Average)
of temperature.

TCC Activation Offset with Tau=0

An offset (degrees Celsius) can be written to the TEMPERATURE_TARGET (0x1A2) MSR,

bits [29:24], the offset value will be subtracted from the value found in bits [23:16].
When the time window (Tau) is set to zero, there will be no averaging, the offset, will
be subtracted from the TjMAX value and used as a new max temperature set point for
Adaptive Thermal Monitoring. This will have the same behavior as in prior products to
have TCC activation and Adaptive Thermal Monitor to occur at this lower target silicon
temperature.

If enabled, the offset should be set lower than any other passive protection such as
ACPI _PSV trip points

TCC Activation Offset with Tau

To manage the processor with the EWMA (Exponential Weighted Moving Average) of
temperature, an offset (degrees Celsius) is written to the TEMPERATURE_TARGET
(0x1A2) MSR, bits [29:24], and the time window (Tau) is written to the
TEMPERATURE_TARGET (0x1A2) MSR [6:0]. The Offset value will be subtracted from
the value found in bits [23:16] and be the temperature.

The processor will manage to this average temperature by adjusting the frequency of
the various domains. The instantaneous Tj can briefly exceed the average temperature.
The magnitude and duration of the overshoot is managed by the time window value
(Tau).

This averaged temperature thermal management mechanism is in addition, and not

instead of TjMAX thermal management. That is, whether the TCC activation offset is 0 or
not, TCC Activation will occur at TjMAX.

5.1.5.1.2 Frequency / Voltage Control

Upon Adaptive Thermal Monitor activation, the processor attempts to dynamically

reduce processor temperature by lowering the frequency and voltage operating point.
The operating points are automatically calculated by the processor IA core itself and do
not require the BIOS to program them as with previous generations of Intel processors.
The processor IA core will scale the operating points such that:
• The voltage will be optimized according to the temperature, the processor IA core
bus ratio and number of processor IA cores in deep C-states.

86 Datasheet, Volume 1 of 2
 • The processor IA core power and temperature are reduced while minimizing
performance degradation.

Once the temperature has dropped below the trigger temperature, the operating
frequency and voltage will transition back to the normal system operating point.

Once a target frequency/bus ratio is resolved, the processor IA core will transition to
the new target automatically.
• On an upward operating point transition the voltage transition precedes the
frequency transition.
• On a downward transition the frequency transition precedes the voltage transition.
• The processor continues to execute instructions. However, the processor will halt
instruction execution for frequency transitions.

If a processor load-based Enhanced Intel SpeedStep Technology/P-state transition

(through MSR write) is initiated while the Adaptive Thermal Monitor is active, there are
two possible outcomes:
• If the P-state target frequency is higher than the processor IA core optimized
target frequency, the P-state transition will be deferred until the thermal event has
been completed.
• If the P-state target frequency is lower than the processor IA core optimized target
frequency, the processor will transition to the P-state operating point.

5.1.5.1.3 Clock Modulation

If the frequency/voltage changes are unable to end an Adaptive Thermal Monitor event,
the Adaptive Thermal Monitor will utilize clock modulation. Clock modulation is done by
alternately turning the clocks off and on at a duty cycle (ratio between clock “on” time
and total time) specific to the processor. The duty cycle is factory configured to 25% on
and 75% off and cannot be modified. The period of the duty cycle is configured to 32
microseconds when the Adaptive Thermal Monitor is active. Cycle times are
independent of processor frequency. A small amount of hysteresis has been included to
prevent excessive clock modulation when the processor temperature is near its
maximum operating temperature. Once the temperature has dropped below the
maximum operating temperature, and the hysteresis timer has expired, the Adaptive
Thermal Monitor goes inactive and clock modulation ceases. Clock modulation is
automatically engaged as part of the Adaptive Thermal Monitor activation when the
frequency/voltage targets are at their minimum settings. Processor performance will be
decreased when clock modulation is active. Snooping and interrupt processing are
performed in the normal manner while the Adaptive Thermal Monitor is active.

Clock modulation will not be activated by the Package average temperature control
mechanism.

5.1.5.2 Digital Thermal Sensor

Each processor has multiple on-die Digital Thermal Sensor (DTS) that detects the
processor IA, GT and other areas of interest instantaneous temperature.

Temperature values from the DTS can be retrieved through:

• A software interface using processor Model Specific Register (MSR).
• A processor hardware interface as described in Platform Environmental Control
Interface (PECI).

Datasheet, Volume 1 of 2
87
 When temperature is retrieved by the processor MSR, it is the instantaneous
temperature of the given DTS. When temperature is retrieved using PECI, it is the
average of the highest DTS temperature in the package over a 256 ms time window.
Intel recommends using the PECI reported temperature for platform thermal control
that benefits from averaging, such as fan speed control. The average DTS temperature
may not be a good indicator of package Adaptive Thermal Monitor activation or rapid
increases in temperature that triggers the Out of Specification status bit within the
PACKAGE_THERM_STATUS MSR 1B1h and IA32_THERM_STATUS MSR 19Ch.

Code execution is halted in C1 or deeper C- states. Package temperature can still be

monitored through PECI in lower C-states.

Unlike traditional thermal devices, the DTS outputs a temperature relative to the
maximum supported operating temperature of the processor (TjMAX), regardless of TCC
activation offset. It is the responsibility of software to convert the relative temperature
to an absolute temperature. The absolute reference temperature is readable in the
TEMPERATURE_TARGET MSR 1A2h. The temperature returned by the DTS is an implied
negative integer indicating the relative offset from TjMAX. The DTS does not report
temperatures greater than TjMAX. The DTS-relative temperature readout directly
impacts the Adaptive Thermal Monitor trigger point. When a package DTS indicates
that it has reached the TCC activation (a reading of 0x0, except when the TCC
activation offset is changed), the TCC will activate and indicate an Adaptive Thermal
Monitor event. A TCC activation will lower both processor IA core and graphics core
frequency, voltage, or both. Changes to the temperature can be detected using two
programmable thresholds located in the processor thermal MSRs. These thresholds
have the capability of generating interrupts using the processor IA core's local APIC.
Refer to the Intel 64 and IA-32 Architectures Software Developer’s Manual for specific
register and programming details.

5.1.5.2.1 Digital Thermal Sensor Accuracy (Taccuracy)

The error associated with DTS measurements will not exceed ±5 °C within the entire
operating range.

5.1.5.2.2 Fan Speed Control with Digital Thermal Sensor

Digital Thermal Sensor based fan speed control (TFAN) is a recommended feature to
achieve optimal thermal performance. At the TFAN temperature, Intel recommends full
cooling capability before the DTS reading reaches TjMAX.

5.1.5.3 PROCHOT# Signal

PROCHOT# (processor hot) is asserted by the processor when the TCC is active. Only a
single PROCHOT# pin exists at a package level. When any DTS temperature reaches
the TCC activation temperature, the PROCHOT# signal will be asserted. PROCHOT#
assertion policies are independent of Adaptive Thermal Monitor enabling.

88 Datasheet, Volume 1 of 2
5.1.5.4 Bi-Directional PROCHOT#
By default, the PROCHOT# signal is set to input only. When configured as an input or
bi-directional signal, PROCHOT# can be used for thermally protecting other platform
components should they overheat as well. When PROCHOT# is driven by an external
device:
• The package will immediately transition to the lowest P-State (Pn) supported by the
processor IA cores and graphics cores. This is contrary to the internally-generated
Adaptive Thermal Monitor response.
• Clock modulation is not activated.

The processor package will remain at the lowest supported P-state until the system de-
asserts PROCHOT#. The processor can be configured to generate an interrupt upon
assertion and de-assertion of the PROCHOT# signal.

When PROCHOT# is configured as a bi-directional signal and PROCHOT# is asserted by

the processor, it is impossible for the processor to detect a system assertion of
PROCHOT#. The system assertion will have to wait until the processor de-asserts
PROCHOT# before PROCHOT# action can occur due to the system assertion. While the
processor is hot and asserting PROCHOT#, the power is reduced but the reduction rate
is slower than the system PROCHOT# response of < 100 us. The processor thermal
control is staged in smaller increments over many milliseconds. This may cause several
milliseconds of delay to a system assertion of PROCHOT# while the output function is
asserted.

5.1.5.5 Voltage Regulator Protection using PROCHOT#

PROCHOT# may be used for thermal protection of voltage regulators (VR). System
designers can create a circuit to monitor the VR temperature and assert PROCHOT#
and, if enabled, activate the TCC when the temperature limit of the VR is reached.
When PROCHOT# is configured as a bi-directional or input only signal, if the system
assertion of PROCHOT# is recognized by the processor, it will result in an immediate
transition to the lowest P-State (Pn) supported by the processor IA cores and graphics
cores. Systems should still provide proper cooling for the VR and rely on bi-directional
PROCHOT# only as a backup in case of system cooling failure. Overall, the system
thermal design should allow the power delivery circuitry to operate within its
temperature specification even while the processor is operating at its TDP.

5.1.5.6 Thermal Solution Design and PROCHOT# Behavior

With a properly designed and characterized thermal solution, it is anticipated that
PROCHOT# will only be asserted for very short periods of time when running the most
power intensive applications. The processor performance impact due to these brief
periods of TCC activation is expected to be so minor that it would be immeasurable.
However, an under-designed thermal solution that is not able to prevent excessive
assertion of PROCHOT# in the anticipated ambient environment may:
• Cause a noticeable performance loss.
• Result in prolonged operation at or above the specified maximum junction
temperature and affect the long-term reliability of the processor.
• May be incapable of cooling the processor even when the TCC is active continuously
(in extreme situations).

Datasheet, Volume 1 of 2
89
5.1.5.7 Low-Power States and PROCHOT# Behavior
Depending on package power levels during package C-states, outbound PROCHOT#
may de-assert while the processor is idle as power is removed from the signal. Upon
wake up, if the processor is still hot, the PROCHOT# will re-assert. Although, typically
package idle state residency should resolve any thermal issues. The PECI interface is
fully operational during all C-states and it is expected that the platform continues to
manage processor IA core and package thermals even during idle states by regularly
polling for thermal data over PECI.

5.1.5.8 THERMTRIP# Signal

Regardless of enabling the automatic or on-demand modes, in the event of a
catastrophic cooling failure, the package will automatically shut down when the silicon
has reached an elevated temperature that risks physical damage to the product. At this
point, the THERMTRIP# signal will go active.

5.1.5.9 Critical Temperature Detection

Critical Temperature detection is performed by monitoring the package temperature.
This feature is intended for graceful shutdown before the THERMTRIP# is activated.
However, the processor execution is not guaranteed between critical temperature and
THERMTRIP#. If the Adaptive Thermal Monitor is triggered and the temperature
remains high, a critical temperature status and sticky bit are latched in the
PACKAGE_THERM_STATUS MSR 1B1h and the condition also generates a thermal
interrupt, if enabled. For more details on the interrupt mechanism, refer to the Intel®
64 and IA-32 Architectures Software Developer’s Manual (see Related Documents
section).

5.1.5.10 On-Demand Mode

The processor provides an auxiliary mechanism that allows system software to force
the processor to reduce its power consumption using clock modulation. This
mechanism is referred to as “On-Demand” mode and is distinct from Adaptive Thermal
Monitor and bi-directional PROCHOT#. The processor platforms should not rely on
software usage of this mechanism to limit the processor temperature. On-Demand
Mode can be accomplished using processor MSR or chipset I/O emulation. On-Demand
Mode may be used in conjunction with the Adaptive Thermal Monitor. However, if the
system software tries to enable On-Demand mode at the same time the TCC is
engaged, the factory configured duty cycle of the TCC will override the duty cycle
selected by the On-Demand mode. If the I/O based and MSR-based On-Demand modes
are in conflict, the duty cycle selected by the I/O emulation-based On-Demand mode
will take precedence over the MSR-based On-Demand Mode.

5.1.5.11 MSR Based On-Demand Mode

If Bit 4 of the IA32_CLOCK_MODULATION MSR is set to 1, the processor will
immediately reduce its power consumption using modulation of the internal processor
IA core clock, independent of the processor temperature. The duty cycle of the clock
modulation is programmable using bits [3:1] of the same IA32_CLOCK_MODULATION
MSR. In this mode, the duty cycle can be programmed in either 12.5% or 6.25%
increments (discoverable using CPUID). Thermal throttling using this method will
modulate each processor IA core's clock independently.

90 Datasheet, Volume 1 of 2
5.1.5.12 I/O Emulation-Based On-Demand Mode
I/O emulation-based clock modulation provides legacy support for operating system
software that initiates clock modulation through I/O writes to ACPI defined processor
clock control registers on the chipset (PROC_CNT). Thermal throttling using this
method will modulate all processor IA cores simultaneously.

5.1.6 Intel® Memory Thermal Management

The processor provides thermal protection for system memory by throttling memory
traffic when using either DIMM modules or a memory down implementation. Two levels
of throttling are supported by the processor, either a warm threshold or hot threshold
that is customizable through memory mapped I/O registers. Throttling based on the
warm threshold should be an intermediate level of throttling. Throttling based on the
hot threshold should be the most severe. The amount of throttling is dynamically
controlled by the processor.

Memory temperature can be acquired through an on-board thermal sensor (TS-on-

Board), retrieved by an embedded controller and reports to the processor through the
PECI 3.1 interface. This methodology is known as PECI injected temperatures. This is a
method of Closed Loop Thermal Management (CLTM). CLTM requires the use of a
physical thermal sensor. EXTTS# is another method of CLTM but it is only capable of
reporting memory thermal status to the processor. EXTTS# consists of two GPIO pins
on the PCH, where the state of the pins is communicated internally to the processor.

When a physical thermal sensor is not available to report temperature, the processor
supports Open Loop Thermal Management (OLTM) that estimates the power consumed
per rank of the memory using the processor's DRAM power meter. A per rank power is
associated with the warm and hot thresholds that, when exceeded, may trigger
memory thermal throttling.

5.1.7 Scenario Design Power (SDP)

SDP requires that the POWER_LIMIT_1 (PL1) to be set to the cooling level capability
(SDP level, or higher). While the SDP specification is characterized at Tj of 80 °C, the
functional limit for the product remains at TjMAX. Customers may choose to program
the TCC Offset to have TCC Activation at 80 °C, but it is not required.

The processors that have SDP specified can still exceed SDP under certain workloads,
such as TDP workloads. TDP power dissipation is still possible with the intended usage
models, and protection mechanisms to handle levels beyond cooling capabilities are
recommended. Intel recommends using such thermal control mechanisms to manage
situations where power may exceed the thermal design capability.

Note: cTDP-Down mode is required for Intel Core products in order to achieve SDP.

Note: Although SDP is defined at 80 °C, the TCC activation temperature is TjMAX.

Datasheet, Volume 1 of 2
91
5.2 Thermal and Power Specifications
The following notes apply only to Table 5-2 and Table 5-3.

Note Definition

The TDP and Configurable TDP values are the average power dissipation in junction temperature
operating condition limit, for the SKU Segment and Configuration, for which the processor is validated
1
during manufacturing when executing an associated Intel-specified high-complexity workload at the
processor IA core frequency corresponding to the configuration and SKU.

TDP workload may consist of a combination of processor IA core intensive and graphics core intensive
2
applications.

3 Can be modified at runtime by MSR writes, with MMIO and with PECI commands.

'Turbo Time Parameter' is a mathematical parameter (units of seconds) that controls the processor
4 turbo algorithm using a moving average of energy usage. Do not set the Turbo Time Parameter to a
value less than 0.1 seconds. refer to Section 5.1.3.2 for further information.

Shown limit is a time averaged power, based upon the Turbo Time Parameter. Absolute product power
5
may exceed the set limits for short durations or under virus or uncharacterized workloads.

Processor will be controlled to specified power limit as described in Section 5.1.2. If the power value
and/or 'Turbo Time Parameter' is changed during runtime, it may take a short period of time
6
(approximately 3 to 5 times the 'Turbo Time Parameter') for the algorithm to settle at the new control
limits.

This is a hardware default setting and not a behavioral characteristic of the part. The reference BIOS
7
code may override the hardware default power limit values to optimize performance

8 For controllable turbo workloads, the PL2 limit may be exceeded for up to 10 ms.

9 Refer to Table 5-1 for the definitions of ’base’, 'TDP-Up' and 'TDP-Down'.

LPM power level is an opportunistic power and is not a guaranteed value as usages and
10
implementations may vary.

Power limits may vary depending on if the product supports the 'TDP-up' and/or 'TDP-down' modes.
11
Default power limits can be found in the PKG_PWR_SKU MSR (614h).

The processor die and OPCM die do not reach maximum sustained power simultaneously since the
12 sum of the 2 dies estimated power budget is controlled to be equal to or less than the package TDP
(PL1) limit.

cTDP down power is based on GT2 equivalent graphics configuration. cTDP down does not decrease
13 the number of active Processor Graphics EUs, but relies on Power Budget Management (PL1) to
achieve the specified power level.

14 May vary based on SKU.

16 Sustained residencies at high voltages and temperatures may temporarily limit turbo frequency.

92 Datasheet, Volume 1 of 2
5.2.1 S-Processor Line Thermal and Power Specifications

Table 5-2. TDP Specifications (S-Processor Line)

Processor IA
Segment Cores, Processor IA Thermal
Graphics core
and Graphics Configuration Core Design Power Notes
Frequency
Package Configuration Frequency (TDP) [w]
and TDP

Base 3.8 GHz to

1.15 GHz 91 1,9,10,
Quad-Core GT2 4.2 GHz 11,12,
91W
16
LPM 800 MHz 350 MHz N/A

Base 3 GHz to 1 GHz to

65 1,9,10,
Quad-Core GT2 3.6 GHz 1.15 GHz 11,12,
65W
16
LPM 800 MHz 350 MHz N/A

Base 2.4 GHz to

35
3.4GHz 950 MHz to
1,9,10,
Quad-Core GT2 Configurable TDP- 1.2 GHz to 1.1 GHz 11,12,
35W Down / LFM 25
1.9 GHz 16

LPM 800 MHz 350 MHz N/A

Base 3.6 GHz to 1.1 MHz to

51 1,9,10,
Dual-Core GT2 4.2 GHz 1.15 GHz 11,12,
51W
16
LPM 800 MHz 350 MHz N/A
S- Base 3 GHz to
Processor 35
3.6 GHz 1.05 MHz to
Line LGA 1,9,
Dual-Core GT2 1.1 GHz
Configurable TDP- 2.2 GHz to 10,11,
35W 25
Down / LFM 2.7 GHz 16

LPM 800 MHz 350 MHz N/A

Base 2.9 GHz to

1.05 GHz 51 1,9,
Dual- Core GT1 3.1 GHz 10,11,
51W
16
LPM 800 MHz 350 MHz N/A

Base 3.5 GHz to 1,9,

1.05 GHz 54 10,11,
Dual- Core GT1 3.6 GHz
54W 16
LPM 800 MHz 350 MHz N/A

Base 2.7 GHz to

35
3 GHz 1 GHz to
1,9,
Dual- Core GT1 1.05 GHz
Configurable TDP- 1.8 GHz to 10,11,
35W 25
Down / LFM 2.2 GHz 16

LPM 800 MHz 350 MHz N/A

Table 5-3. Package Turbo Specifications (S-Processor Line) (Sheet 1 of 2)

Processor IA
Cores,
Hardware
Graphics Parameter Min. Max Units Notes
Default
Configuration
and TDP

Quad- Core Power Limit 1 Time (PL1 Tau) 0.1 1 8 s 3,4,5,6

GT2 Power Limit 1 (PL1) N/A 91 N/A W ,7,8,14
91W Power Limit 2 (PL2) N/A 1.25*TDP N/A W ,17

Datasheet, Volume 1 of 2
93
Table 5-3. Package Turbo Specifications (S-Processor Line) (Sheet 2 of 2)
Processor IA
Cores,
Hardware
Graphics Parameter Min. Max Units Notes
Default
Configuration
and TDP

Quad- Core Power Limit 1 Time (PL1 Tau) 0.1 1 8 s 3,4,5,6

GT2 Power Limit 1 (PL1) N/A 65 N/A W ,7,8,14
65W Power Limit 2 (PL2) N/A 1.25*TDP N/A W ,17

Quad- Core Power Limit 1 Time (PL1 Tau) 0.1 1 8 s 3,4,5,6

GT2 Power Limit 1 (PL1) N/A 35 N/A W ,7,8,14
35W Power Limit 2 (PL2) N/A 1.25*TDP N/A W ,17

Power Limit 1 Time (PL1 Tau) 0.1 1 8 s 3,4,5,6

Dual- Core GT2
Power Limit 1 (PL1) N/A 51 N/A W ,7,8,14
51W
Power Limit 2 (PL2) N/A 1.25*TDP N/A W ,17

Power Limit 1 Time (PL1 Tau) 0.1 1 8 s 3,4,5,6

Dual- Core GT2
Power Limit 1 (PL1) N/A 35 N/A W ,7,8,14
35W
Power Limit 2 (PL2) N/A 1.25*TDP N/A W ,17

Power Limit 1 Time (PL1 Tau) 0.1 1 8 s 3,4,5,6

Quad- Core
Power Limit 1 (PL1) N/A 112 N/A W ,7,8,14
GT0 112W
Power Limit 2 (PL2) N/A 1.25*TDP N/A W ,17

Table 5-4. Low Power and TTV Specifications (S-Processor Line) (Sheet 1 of 2)
Max Power Max Power
Processor IA Cores, TTV TDP Min Max TTV
Package C7 Package C8
Graphics PCG7 (W) TCASE TCASE
(W) (W) 6,7
Configuration and TDP 1,4,5 1,4,5 (°C) (°C)

Quad- Core GT0 112W 2015D N/A N/A 112 0 61

Dual- Core GT2 73W 2015C 11 2 73 0 73

Dual- Core GT0 72W 2015C 11 2 72 0 72

Dual- Core GT1 35W

2015B 11 2 35 0 66.1
Pentium/Celeron

Dual- Core GT1 51W

2015C 11 2 51 0 64.5
Pentium/Celeron

Dual- Core GT1 54W

2015C 11 2 54 0 66.1
Pentium/Celeron

Dual- Core GT2 35W 2015B 11 2 35 0 66.1

Dual- Core GT2 51W 2015C 11 2 51 0 64.5

Quad- Core GT2 65W 2015C 11 3 65 0 71.5

Quad- Core GT2 35W 2015B 11 2 35 0 66.1

Quad- Core GT2 91W 2015D 11 2 91 0 63.7

94 Datasheet, Volume 1 of 2
Table 5-4. Low Power and TTV Specifications (S-Processor Line) (Sheet 2 of 2)
Max Power Max Power
Processor IA Cores, TTV TDP Min Max TTV
Package C7 Package C8
Graphics PCG7 (W) TCASE TCASE
(W) (W) 6,7
Configuration and TDP 1,4,5 1,4,5 (°C) (°C)

Notes:
1. The package C-state power is the worst case power in the system configured as follows:
a. Memory configured for DDR3 1333 and populated with two DIMMs per channel.
b. DMI and PCIe links are at L1
2. Specification at DTS = 50 °C and minimum voltage loadline.
3. Specification at DTS = 35 °C and minimum voltage loadline.
4. These DTS values in Notes 2 - 3 are based on the TCC Activation MSR having a value of 100, see Processor
Temperature on page 77
5. These values are specified at VCC_MAX and VNOM for all other voltage rails for all processor frequencies.
Systems should be designed to ensure the processor is not to be subjected to any static VCC and ICC
combination wherein VCCP exceeds VCCP_MAX at specified ICCP. See the loadline specifications.
6. Thermal Design Power (TDP) should be used for processor thermal solution design targets. TDP is not the
maximum power that the processor can dissipate. TDP is measured at DTS = -1.TDP is achieved with the
Memory configured for DDR3 1333 and 2 DIMMs per channel.
7. Platform Compatibility Guide (PCG) (previously known as FMB) provides a design target for meeting all
planned processor frequency requirements.
8. Not 100% tested. Specified by design characterization.

Table 5-5. TCONTROL Offset Configuration (S-Processor Line)

Segment Dual Core GT1 Dual Core GT2 Dual Core GT2

TDP [W] 54 35 51 35 65 91

TEMP_TARGET (TCONTROL) [°C] 20 16 20 6 20 20

Notes:
1. Digital Thermal Sensor (DTS) based fan speed control is recommended to achieve optimal thermal
performance.
2. Intel recommends full cooling capability at approximately the DTS value of -1, to minimize TCC activation
risk.
3. For example, if TCONTROL = 20 ºC, Fan acceleration operation will start at 80 ºC (100 ºC - 20 ºC).

Datasheet, Volume 1 of 2
95
5.2.1.1 Thermal Profile for PCG 2015D Processor

Figure 5-2. Thermal Test Vehicle Thermal Profile for PCG 2015D Processor

Notes:
1. Refer to Table 5-6 for discrete points that constitute the thermal profile.

Table 5-6. Thermal Test Vehicle Thermal Profile for PCG 2015D Processor (Sheet 1 of 2)
Power (W) TCASE_MAX (°C) Power (W) TCASE_MAX (°C)

0 43.7 46 53.8

2 44.1 48 54.3

4 44.6 50 54.7

6 45.0 52 55.1

8 45.6 54 55.6

10 45.9 56 56.0

12 46.3 58 56.5

14 46.8 60 56.9

16 47.2 62 57.3

18 47.7 64 57.8

20 48.1 66 58.2

22 48.5 68 58.7

24 49.0 70 59.1

26 49.4 72 59.5

28 49.9 74 60.0

30 50.3 76 60.4

32 50.7 78 60.9

34 51.2 80 61.3

36 51.6 82 61.7

96 Datasheet, Volume 1 of 2
Table 5-6. Thermal Test Vehicle Thermal Profile for PCG 2015D Processor (Sheet 2 of 2)
Power (W) TCASE_MAX (°C) Power (W) TCASE_MAX (°C)

38 52.1 84 62.2

40 52.5 86 62.6

42 52.9 88 63.1

44 53.4 90 63.5

46 53.8 92 63.9

5.2.1.2 Thermal Profile for PCG 2015C Processor

Figure 5-3. Thermal Test Vehicle Thermal Profile for PCG 2015C Processor

Notes:
1. Refer to Table 5-7 for discrete points that constitute the thermal profile.

Table 5-7. Thermal Test Vehicle Thermal Profile for PCG 2015C Processor (Sheet 1 of 2)
Power (W) TCASE_MAX (°C) Power (W) TCASE_MAX (°C)

0 43.5 34 57.4
2 44.3 36 58.3
4 45.1 38 59.1
6 46.0 40 59.9
8 46.8 42 60.7
10 47.6 44 61.5
12 48.4 46 62.4
14 49.2 48 63.2
16 50.1 50 64.0
18 50.9 52 64.8

Datasheet, Volume 1 of 2
97
Table 5-7. Thermal Test Vehicle Thermal Profile for PCG 2015C Processor (Sheet 2 of 2)
Power (W) TCASE_MAX (°C) Power (W) TCASE_MAX (°C)

20 51.7 53 65.2
22 52.5 54 65.6
24 53.3 56 66.5
26 54.2 58 67.3
28 55.0 60 68.1
30 55.8 62 68.9
32 56.6 64 69.7
34 57.4 65 70.2

5.2.1.3 Thermal Profile for PCG 2015B Processor

Figure 5-4. Thermal Test Vehicle Thermal Profile for PCG 2015B Processor

Notes:
1. Refer to Table 5-8 for discrete points that constitute the thermal profile.

Table 5-8. Thermal Test Vehicle Thermal Profile for PCG 2015B Processor (Sheet 1 of 2)
Power (W) TCASE_MAX (°C) Power (W) TCASE_MAX (°C)

0 48.2 20 58.4

2 49.2 22 59.4

4 50.2 24 60.4

6 51.3 26 61.5

8 52.3 28 62.5

10 53.3 30 63.5

12 54.3 32 64.5

98 Datasheet, Volume 1 of 2
Table 5-8. Thermal Test Vehicle Thermal Profile for PCG 2015B Processor (Sheet 2 of 2)
Power (W) TCASE_MAX (°C) Power (W) TCASE_MAX (°C)

14 55.3 34 65.5

16 56.4 35 66.1

18 57.4

5.2.1.4 Thermal Profile for PCG 2015A Processor

Figure 5-5. Thermal Test Vehicle Thermal Profile for PCG 2015A Processor

Notes:
1. Refer to Table 5-9 for discrete points that constitute the thermal profile.

Table 5-9. Thermal Test Vehicle Thermal Profile for PCG 2015A Processor (Sheet 1 of 2)
Power (W) TCASE_MAX (°C) Power (W) TCASE_MAX (°C)

0 43.5 34 57.4

2 44.3 36 58.3

4 45.1 38 59.1

6 46.0 40 59.9

8 46.8 42 60.7

10 47.6 44 61.5

12 48.4 46 62.4

14 49.2 48 63.2

16 50.1 50 64.0

18 50.9 52 64.8

20 51.7 54 65.6

22 52.5 56 66.5

Datasheet, Volume 1 of 2
99
Table 5-9. Thermal Test Vehicle Thermal Profile for PCG 2015A Processor (Sheet 2 of 2)
Power (W) TCASE_MAX (°C) Power (W) TCASE_MAX (°C)

24 53.3 58 67.3

26 54.2 60 68.1

28 55.0 62 68.9

30 55.8 64 69.7

32 56.6 65 70.2

5.2.1.5 Thermal Metrology

The maximum TTV case temperatures (TCASE-MAX) can be derived from the data in the
appropriate TTV thermal profile earlier in this chapter. The TTV TCASE is measured at the
geometric top center of the TTV integrated heat spreader (IHS). Figure 5-6 illustrates
the location where TCASE temperature measurements should be made.

Figure 5-6. Thermal Test Vehicle (TTV) Case Temperature (TCASE) Measurement Location

Measure TCASE at
the geometric
center of the
package

37.5

37.5

The following supplier can machine the groove and attach a thermocouple to the IHS.
The following supplier is listed as a convenience to Intel's general customers and may
be subject to change without notice. THERM-X OF CALIFORNIA, 3200 Investment Blvd,
Hayward, Ca 94544. George Landis +1-510-441-7566 Ext. 368 george@therm-x.com.
The vendor part number is XTMS1565.

5.2.1.6 Fan Speed Control Scheme with Digital Thermal Sensor (DTS) 1.1
To correctly use DTS 1.1, the designer must first select a worst case scenario TAMBIENT,
and ensure that the Fan Speed Control (FSC) can provide a ΨCA that is equivalent or
greater than the ΨCA specification.

The DTS 1.1 implementation consists of two points: a ΨCA at TCONTROL and a ΨCA at
DTS = -1.

100 Datasheet, Volume 1 of 2

 The ΨCA point at DTS = -1 defines the minimum ΨCA required at TDP considering the
worst case system design TAMBIENT design point:

ΨCA = (TCASE-MAX – TAMBIENT-TARGET) / TDP

For example, for a 91 W TDP part, the TCASE maximum is 63.7 °C and at a worst case
design point of 40 °C local ambient this will result in:

ΨCA = (63.7 – 40) / 91 = 0.26 °C/W

Similarly for a system with a design target of 45 °C ambient, the ΨCA at DTS = -1
needed will be 0.21 °C/W.

The second point defines the thermal solution performance (ΨCA) at TCONTROL. The
following table lists the required ΨCA for the various TDP processors.

These two points define the operational limits for the processor for DTS 1.1
implementation. At TCONTROL the fan speed must be programmed such that the
resulting ΨCA is better than or equivalent to the required ΨCA listed in the following
table. Similarly, the fan speed should be set at DTS = -1 such that the thermal solution
performance is better than or equivalent to the ΨCA requirements at TAMBIENT-MAX.

The fan speed controller must linearly ramp the fan speed from processor
DTS = TCONTROL to processor DTS = -1.

Figure 5-7. Digital Thermal Sensor (DTS) 1.1 Definition Points

Datasheet, Volume 1 of 2
101
Table 5-10. Digital Thermal Sensor (DTS) 1.1 Thermal Solution Performance Above
TCONTROL
ΨCA at DTS =
ΨCA at DTS = -1 ΨCA at DTS = -1 ΨCA at DTS = -1
TCONTROL1, 2
At System At System At System
Processor At System
TAMBIENT_MAX TAMBIENT_MAX TAMBIENT_MAX
TAMBIENT_MAX
= 40 °C = 45 °C = 50 °C
= 30 °C

91W 0.45 0.26 0.21 0.15

Quad- Core GT2 65W 0.73 0.46 0.39 0.31

35W 1.57 0.74 0.60 0.46

Dual- Core GT2 51W 0.83 0.48 0.38 0.28

35W 1.32 0.74 0.60 0.46

Quad- Core GT1 65W 0.73 0.46 0.39 0.31

Dual- Core GT1 54W 0.82 0.47 0.38 0.29

Notes:
1. ΨCA at "DTS = TCONTROL" is applicable to systems that have an internal TRISE (TROOM temperature to
Processor cooling fan inlet) of less than 10 °C. In case the expected TRISE is greater than 10°C, a
correction factor should be used as explained below. For each 1 °C TRISE above 10 °C, the correction
factor (CF) is defined as CF = 1.7 / (processor TDP)
2. Example: A chassis TRISE assumption is 12 °C for a 91 W TDP processor: CF = 1.7 / 91 W = 0.019 /W For
TRISE > 10 °C ΨCA at TCONTROL = (Value provide in Column 2) – (TRISE – 10) * CF ΨCA = 0.45 – (12 – 10)
0.019 = 0.41 °C/W In this case, the fan speed should be set slightly higher, equivalent to
ΨCA = 0.41 °C/W

5.2.1.7 Fan Speed Control Scheme with Digital Thermal Sensor (DTS) 2.0
To simplify processor thermal specification compliance, the processor calculates the
DTS Thermal Profile from TCONTROL Offset, TCC Activation Temperature, TDP, and the
Thermal Margin Slope provided in the following table.

Note: TCC Activation Offset is 0 for the processors.

Using the DTS Thermal Profile, the processor can calculate and report the Thermal
Margin, where a value less than 0 indicates that the processor needs additional cooling,
and a value greater than 0 indicates that the processor is sufficiently cooled.

Refer to the processor Thermal Mechanical Design Guidelines (TMDG) for additional
information (see Related Documents).

102 Datasheet, Volume 1 of 2

Figure 5-8. Digital Thermal Sensor (DTS) 1.1 Definition Points

Table 5-11. Thermal Margin Slope

Die
TCC Activation Temperature Thermal Margin
PCG Configuration TDP [W]
[°C] Control Offset Slope [°C/W]
(Cores/GT)

2015D Quad- Core GT2 91 100 20 0.62

Quad- Core GT2 65 100 20 0.85

Dual- Core GT2 51 100 20 1.11

2015C
Quad- Core GT1 65 98 20 0.81

Dual- Core GT1 54 100 20 1.04

Quad- Core GT2 35 80 16 0.90

2015B
Dual- Core GT2 35 92 16 1.26

5.3

§§

Datasheet, Volume 1 of 2
103
6 Signal Description

This chapter describes the processor signals. They are arranged in functional groups
according to their associated interface or category. The notations in the following table
are used to describe the signal type.

The signal description also includes the type of buffer used for the particular signal (see
the following table).

Table 6-1. Signal Tables Terminology

Notation Signal Type

I Input pin

O Output pin

I/O Bi-directional Input/Output pin

SE Single Ended Link

Diff Differential Link

CMOS CMOS buffers. 1.05V- tolerant

OD Open Drain buffer

DDR3L/-RS DDR3L/DDR3L-RS buffers: 1.35V-tolerant

DDR4 DDR4 buffers: 1.2V-tolerant

Analog reference or output. May be used as a threshold voltage or for buffer

A
compensation

GTL Gunning Transceiver Logic signaling technology

Ref Voltage reference signal

Availability Signal Availability condition - based on segment, SKU, platform type or any other factor

Asynchronous 1 Signal has no timing relationship with any reference clock.

Note:
1. Qualifier for a buffer type.

6.1 System Memory Interface

Table 6-2. DDR3L/-RS Memory Interface (Sheet 1 of 2)
Buffer Link
Signal Name Description Dir. Availability
Type Type

DDR0_DQ[63:0] Data Buses: Data signals interface to the SDRAM

data buses. I/O DDR3L SE All Processor Lines
DDR1_DQ[63:0]

DDR0_DQSP[7:0] Data Strobes: Differential data strobe pairs. The

DDR0_DQSN[7:0] data is captured at the crossing point of DQS during
read and write transactions. I/O DDR3L Diff All Processor Lines
DDR1_DQSP[7:0]
DDR1_DQSN[7:0]

SDRAM Differential Clock: Differential clocks [1:0] applicable for all

DDR0_CKN signal pairs, pair per rank. The crossing of the Processor Lines.
DDR0_CKP positive edge of DDR0_CKP/DDR1_CKP and the
O DDR3L Diff [3:2] applicable only in
DDR1_CKN negative edge of their complement DDR0_CKN /
DDR1_CKN are used to sample the command and S-Processor Line
DDR1_CKP processors
control signals on the SDRAM.

Datasheet, Volume 1 of 2
105
Table 6-2. DDR3L/-RS Memory Interface (Sheet 2 of 2)
Buffer Link
Signal Name Description Dir. Availability
Type Type

Clock Enable: (1 per rank). These signals are used

to: [1:0] applicable for all
Processor Lines.
DDR0_CKE • Initialize the SDRAMs during power-up.
O DDR3L SE [3:2] applicable only in
DDR1_CKE • Power-down SDRAM ranks.
S-Processor Line
• Place all SDRAM ranks into and out of self- processors.
refresh during STR (Suspend to RAM).

Chip Select: (1 per rank). These signals are used [1:0] applicable for all
to select particular SDRAM components during the Processor Lines.
DDR0_CS#
active state. There is one Chip Select for each O DDR3L SE [3:2] applicable only in
DDR1_CS# SDRAM rank. S-Processor Line
processors

On Die Termination: (1 per rank). Active SDRAM [0] applicable for all
Termination Control. Processor Lines.
DDR0_ODT [1] applicable for S-
O DDR3L SE Processor Lines.
DDR1_ODT
[3:2] applicable only in
S-Processor Line
processors

Memory Address: These signals are used to

provide the multiplexed row and column address to
the SDRAM.
• A10 is sampled during Read/Write commands
to determine whether Autoprecharge should be
performed to the accessed bank after the
Read/Write operation.
HIGH: Autoprecharge;
LOW: no Autoprecharge.
DDR0_MA[15:0]
• A10 is sampled during a Precharge command O DDR3L SE All Processor Lines
DDR1_MA[15:0]
to determine whether the Precharge applies to
one bank (A10 LOW) or all banks (A10 HIGH).
If only one bank is to be precharged, the bank
is selected by bank addresses.
• A12 is sampled during Read and Write
commands to determine if burst chop (on-the-
fly) will be performed.
HIGH: no burst chop;
LOW: burst chopped.

DDR0_BA[2:0] Bank Select: These signals define which banks are

selected within each SDRAM rank. O DDR3L SE All Processor Lines
DDR1_BA[2:0]

DDR0_CAS# CAS Control Signal: Column Address Select

command signal O DDR3L SE All Processor Lines
DDR1_CAS#
DDR0_RAS# RAS Control Signal: Row Address Select
command signal O DDR3L SE All Processor Lines
DDR1_RAS#

DDR0_WE# WE Control Signal: Write Enable command signal

O DDR3L SE All Processor Lines
DDR1_WE#

DDR0_VREF_DQ Memory Reference Voltage for DQ:

O A SE All Processor Lines
DDR1_VREF_DQ

Memory Reference Voltage for Command &

DDR_VREF_CA O A SE All Processor Lines
Address:

106 Datasheet, Volume 1 of 2

Table 6-3. DDR4 Memory Interface (Sheet 1 of 2)
Buffer Link
Signal Name Description Dir. Availability
Type Type

DDR0_DQ[63:0] Data Buses: Data signals interface to the SDRAM

data buses. I/O DDR4 SE All Processor Lines
DDR1_DQ[63:0]

DDR0_DQSP[7:0] Data Strobes: Differential data strobe pairs. The

DDR0_DQSN[7:0] data is captured at the crossing point of DQS during
read and write transactions. I/O DDR4 Diff All Processor Lines
DDR1_DQSP[7:0]
DDR1_DQSN[7:0]

SDRAM Differential Clock: Differential clocks [1:0] applicable for All

DDR0_CKN[3:0] signal pairs, pair per rank. The crossing of the Processor Lines.
DDR0_CKP[3:0] positive edge of DDR0_CKP/DDR1_CKP and the
O DDR4 Diff [3:2] applicable only
DDR1_CKN[3:0] negative edge of their complement DDR0_CKN /
DDR1_CKN are used to sample the command and in S-Processor Line
DDR1_CKP[3:0] processors
control signals on the SDRAM.

Clock Enable: (1 per rank). These signals are used

to: [1:0] applicable for All
Processor Lines.
DDR0_CKE[3:0] • Initialize the SDRAMs during power-up.
O DDR4 SE [3:2] applicable only
DDR1_CKE[3:0] • Power-down SDRAM ranks.
in S-Processor Line
• Place all SDRAM ranks into and out of self- processors.
refresh during STR (Suspend to RAM).

Chip Select: (1 per rank). These signals are used [1:0] applicable for All
to select particular SDRAM components during the Processor Lines.
DDR0_CS#[3:0]
active state. There is one Chip Select for each O DDR4 SE [3:2] applicable only
DDR1_CS#[3:0] SDRAM rank. in S-Processor Line
processors

On Die Termination: (1 per rank). Active SDRAM [0] applicable for All
Termination Control. Processor Lines.
DDR0_ODT[3:0] [1] applicable for S-
O DDR4 SE Processor Lines.
DDR1_ODT[3:0]
[3:2] applicable only
in S-Processor Line
processors

Address: These signals are used to provide the

multiplexed row and column address to the SDRAM.
• A[16:14] use also as command signals, see
ACT# signal description.
• A10 is sampled during Read/Write commands
to determine whether Autoprecharge should be
performed to the accessed bank after the
Read/Write operation.
HIGH: Autoprecharge;
DDR0_MA[16:0] LOW: no Autoprecharge).
O DDR4 SE All Processor Lines
DDR1_MA[16:0] • A10 is sampled during a Precharge command
to determine whether the Precharge applies to
one bank (A10 LOW) or all banks (A10 HIGH).
If only one bank is to be precharged, the bank
is selected by bank addresses.
• A12 is sampled during Read and Write
commands to determine if burst chop (on-the-
fly) will be performed.
HIGH, no burst chop;
LOW: burst chopped).

Activation Command: ACT# HIGH along with CS#

determines that the signals addresses below have
DDR0_ACT# command functionality.
A16 use as RAS# signal O DDR4 SE All Processor Lines
DDR1_ACT#
A15 use as CAS# signal
A14 use as WE# signal

Datasheet, Volume 1 of 2
107
Table 6-3. DDR4 Memory Interface (Sheet 2 of 2)
Buffer Link
Signal Name Description Dir. Availability
Type Type

Bank Group: BG[0:1] define to which bank group All processor lines
an Active, Read, Write or Precharge command is SO-DIMM, x8 DRAMs,
DDR0_BG[1:0] being applied. x16 DDP DRAMs
O DDR4 SE
DDR1_BG[1:0] BG0 also determines which mode register is to be devices use BG[1:0].
accessed during a MRS cycle. x16 SDP DRAMs
devices use BG[0]

Bank Address: BA[1:0] define to which bank an

DDR0_BA[1:0] Active, Read, Write or Precharge command is being
O DDR4 SE All Processor Lines
DDR1_BA[1:0] applied. Bank address also determines which mode
register is to be accessed during a MRS cycle.

Alert: This signal is used at command training only.

DDR0_ALERT# It is getting the Command and Address Parity error I DDR4 SE All Processor Lines
DDR1_ALERT# flag during training. CRC feature is not supported.

DDR0_PAR Command and Address Parity: These signals are

used for parity check. O DDR4 SE All Processor Lines
DDR1_PAR
Memory Reference Voltage for Command &
DDR_VREF_CA O A SE All Processor Lines
Address:

Table 6-4. System Memory Reference and Compensation Signals

Buffer Link
Signal Name Description Dir. Availability
Type Type

System Memory Power Gate Control: When

signal is high – platform memory VTT regulator is
DDR_VTT_CNTL enable, output high. O CMOS SE All Processor Lines
When signal is low - Disables the platform memory
VTT regulator in C8 and deeper and S3.

6.2 PCI Express* Graphics (PEG) Signals

Table 6-5. PCI Express* Interface
Buffer Link
Signal Name Description Dir. Availability
Type Type

Resistance Compensation for PCI Express

PEG_RCOMP N/A A SE
channels PEG and DMI.

PEG_RXP[15:0] PCI Express Receive Differential Pairs. PCI

I Diff S-Processor Line
PEG_RXN[15:0] Express*

PEG_TXP[15:0] PCI Express Transmit Differential Pairs. PCI

O Diff
PEG_TXN[15:0] Express*

6.3 Direct Media Interface (DMI) Signals

Table 6-6. DMI Interface Signals
Buffer Link
Signal Name Description Dir. Availability
Type Type

DMI_RXP[3:0] DMI Input from PCH: Direct Media

Interface receive differential pairs. I DMI Diff
DMI_RXN[3:0]
S-Processor Line
DMI_TXP[3:0] DMI Output to PCH: Direct Media Interface
transmit differential pairs. O DMI Diff
DMI_TXN[3:0]

108 Datasheet, Volume 1 of 2

6.4 Reset and Miscellaneous Signals
Table 6-7. Reset and Miscellaneous Signals
Buffer Link
Signal Name Description Dir. Availability
Type Type

Configuration Signals: The CFG signals have a

default value of '1' if not terminated on the board.
Intel recommends placing test points on the board
for CFG pins.
• CFG[0]: Stall reset sequence after PCU PLL
lock until de-asserted:
— 1 = (Default) Normal Operation; No
stall.
— 0 = Stall.
• CFG[1]: Reserved configuration lane.
• CFG[2]: PCI Express* Static x16 Lane
Numbering Reversal. All Processor Lines.
— 1 = Normal operation CFG[2], CFG[6:5] and
— 0 = Lane numbers reversed. CFG[7] are relevant
CFG[19:0] • CFG[3]: Reserved configuration lane. I GTL SE for S-Processor Line
only and test point
• CFG[4]: eDP enable:
may be placed on the
— 1 = Disabled. board for them.
— 0 = Enabled.
• CFG[6:5]: PCI Express* Bifurcation
— 00 = 1 x8, 2 x4 PCI Express*
— 01 = reserved
— 10 = 2 x8 PCI Express*
— 11 = 1 x16 PCI Express*
• CFG[7]: PEG Training:
— 1 = (default) PEG Train immediately
following RESET# de assertion.
— 0 = PEG Wait for BIOS for training.
• CFG[19:8]: Reserved configuration lanes.

CFG_RCOMP Configuration Resistance Compensation N/A N/A SE All Processor Lines

RESET# Platform Reset pin driven by the PCH. I CMOS SE S-Processor Line

Processor Select: This pin is for compatibility

PROC_SELECT# with future platforms. It should be unconnected N/A All Processor Lines
for this processor.

PROC_TRIGIN Debug pin I CMOS SE S-Processor Line

PROC_TRIGOUT Debug pin O CMOS SE S-Processor Line

Processor Audio Serial Data Input: This signal

PROC_AUDIO_SDI I AUD SE
is an input to the processor from the PCH.

Processor Audio Serial Data Output: This S-Processor Line

PROC_AUDIO_SDO O AUD SE
signal is an output from the processor to the PCH.

PROC_AUDIO_CLK Processor Audio Clock I AUD SE

6.5 embedded DisplayPort* (eDP*) Signals

Table 6-8. embedded DisplayPort* Signals (Sheet 1 of 2)
Buffer Link
Signal Name Description Dir. Availability
Type Type

eDP_TXP[3:0] embedded DisplayPort Transmit: differential pair

O eDP Diff All Processor Lines
eDP_TXN[3:0]

eDP_AUXP embedded DisplayPort Auxiliary: Half-duplex,

bidirectional channel consist of one differential pair. O eDP Diff All Processor Lines
eDP_AUXN

Datasheet, Volume 1 of 2
109
Table 6-8. embedded DisplayPort* Signals (Sheet 2 of 2)
Buffer Link
Signal Name Description Dir. Availability
Type Type

embedded DisplayPort Utility: Output control

signal used for brightness correction of embedded
LCD displays with backlight modulation. Async
eDP_DISP_UTIL O SE All Processor Lines
CMOS
This pin will co-exist with functionality similar to
existing BKLTCTL pin on PCH

DDI IO Compensation resistor, supporting

eDP_RCOMP N/A A SE All Processor Lines
DP*, eDP* and HDMI* channels.

Notes:
1. When using eDP bifurcation:
— x2 eDP lanes for eDP panel (eDP_TXP[0:1], eDP_TXN[0:1])
— x2 lanes for DP (eDP_TXP[2:3], eDP_TXN[2:3])

6.6 Display Interface Signals

Table 6-9. Display Interface Signals
Buffer Link
Signal Name Description Dir. Availability(2)
Type Type

DDI1_TXP[3:0] Digital Display Interface Transmit:

DDI1_TXN[3:0] Differential Pairs
DDI2_TXP[3:0] DP/
O Diff
DDI2_TXN[3:0] HDMI* All Processor Lines.
DDI3_TXP[3:0] DDI3_TXP[3:0]
DDI3_TXN[3:0] DDI3_TXN[3:0]
DDI3_AUXP
DDI1_AUXP Digital Display Interface Display Port DDI3_AUXN
DDI1_AUXN Auxiliary: Half-duplex, bidirectional are present in S-
channel consist of one differential pair for Processor Line.
DDI2_AUXP DP/
each channel. O Diff
DDI2_AUXN HDMI*
DDI3_AUXP
DDI3_AUXN

6.7 Processor Clocking Signals

Table 6-10. Processor Clocking Signals
Buffer Link
Signal Name Description Dir. Availability
Type Type

BCLKP
100 MHz Differential bus clock input to the processor I Diff
BCLKN

CLK24P
24 MHz Differential bus clock input to the processor I Diff S-Processor Line
CLK24N

PCI_BCLKP
100 MHz Clock for PCI Express* logic I Diff
PCI_BCLKN

110 Datasheet, Volume 1 of 2

6.8 Testability Signals
Table 6-11. Testability Signals
Buffer Link
Signal Name Description Dir. Availability
Type Type

Breakpoint and Performance Monitor Signals:

Outputs from the processor that indicate the status
BPM#[3:0] I/O GTL SE All Processor Lines
of breakpoints and programmable counters used for
monitoring processor performance.

Probe Mode Ready: PROC_PRDY# is a processor

PROC_PRDY# output used by debug tools to determine processor O OD SE All Processor Lines
debug readiness.

Probe Mode Request: PROC_PREQ# is used by

PROC_PREQ# debug tools to request debug operation of the I GTL SE All Processor Lines
processor.

Test Clock: This signal provides the clock input for

the processor Test Bus (also known as the Test
PROC_TCK I GTL SE All Processor Lines
Access Port). This signal should be driven low or
allowed to float during power on Reset.

Test Data In: This signal transfers serial test data

PROC_TDI into the processor. This signal provides the serial I GTL SE All Processor Lines
input needed for JTAG specification support.

Test Data Out: This signal transfers serial test data

PROC_TDO out of the processor. This signal provides the serial O OD SE All Processor Lines
output needed for JTAG specification support.

Test Mode Select: A JTAG specification support

PROC_TMS I GTL SE All Processor Lines
signal used by debug tools.

Test Reset: Resets the Test Access Port (TAP) logic.

PROC_TRST# This signal should be driven low during power on I GTL SE All Processor Lines
Reset.

6.9 Error and Thermal Protection Signals

Table 6-12. Error and Thermal Protection Signals (Sheet 1 of 2)
Buffer Link
Signal Name Description Dir. Availability
Type Type

Catastrophic Error: This signal indicates that the

system has experienced a catastrophic error and
cannot continue to operate. The processor will set this
signal for non-recoverable machine check errors or
CATERR# other unrecoverable internal errors. CATERR# is used O OD SE All Processor Lines
for signaling the following types of errors: Legacy
MCERRs, CATERR# is asserted for 16 BCLKs. Legacy
IERRs, CATERR# remains asserted until warm or cold
reset.

Platform Environment Control Interface: A serial

sideband interface to the processor. It is used
primarily for thermal, power, and error management.
PECI,
PECI Details regarding the PECI electrical specifications, I/O SE All Processor Lines
Async
protocols and functions can be found in the RS-
Platform Environment Control Interface (PECI)
Specification, Revision 3.0.

Processor Hot: PROCHOT# goes active when the

processor temperature monitoring sensor(s) detects
that the processor has reached its maximum safe GTL I
PROCHOT# operating temperature. This indicates that the I/O SE All Processor Lines
processor Thermal Control Circuit (TCC) has been OD O
activated, if enabled. This signal can also be driven to
the processor to activate the TCC.

Datasheet, Volume 1 of 2
111
Table 6-12. Error and Thermal Protection Signals (Sheet 2 of 2)
Buffer Link
Signal Name Description Dir. Availability
Type Type

Thermal Trip: The processor protects itself from

catastrophic overheating by use of an internal thermal
sensor. This sensor is set well above the normal
operating temperature to ensure that there are no
THERMTRIP# O OD SE All Processor Lines
false trips. The processor will stop all executions when
the junction temperature exceeds approximately
130 °C. This is signaled to the system by the
THERMTRIP# pin.

6.10 Power Sequencing Signals

Table 6-13. Power Sequencing Signals
Link
Signal Name Description Dir. Buffer Type Availability
Type

Processor Power Good: The processor

requires this input signal to be a clean
indication that the V CC and V DDQ power
supplies are stable and within specifications.
This requirement applies regardless of the S-
state of the processor. 'Clean' implies that the
PROCPWRGD I CMOS SE All Processor Lines
signal will remain low (capable of sinking
leakage current), without glitches, from the
time that the power supplies are turned on until
they come within specification. The signal
should then transition monotonically to a high
state.

VCCST Power Good: The processor requires

this input signal to be a clean indication that
the VCCST and VDDQ power supplies are stable
and within specifications. This signal should
have a valid level during both S0 and S3 power
VCCST_PWRGD states. 'Clean' implies that the signal will I CMOS SE All Processor Lines
remain low (capable of sinking leakage
current), without glitches, from the time that
the power supplies are turned on until they
come within specification. The signal should
then transition monotonically to a high state.

Processor Detect / Socket Occupied: Pulled

down directly (0 Ohms) on the processor
PROC_DETECT# package to the ground. There is no connection
N/A N/A SE All Processor Lines
/SKTOCC# to the processor silicon for this signal. System
board designers may use this signal to
determine if the processor is present.

VIDSOUT, VIDSCK, VIDALERT#: These

VIDSOUT signals comprise a three-signal serial I/O I:GTL/O:OD
VIDSCK synchronous interface used to transfer power O OD SE All Processor Lines
VIDALERT# management information between the I CMOS
processor and the voltage regulator controllers.

Power Management Sync: A sideband signal

to communicate power management status
PM_SYNC I CMOS SE S-Processor Line
from the PCH to the processor. The PCH report
EXTTS#/EVENT# status to the processor.

Power Management Down: Sideband to

PCH. Indicates processor wake up event
PM_DOWN O CMOS SE S-Processor Line
EXTTS# on PCH. The processor combines the
pin status into the OLTM/CLTM.

112 Datasheet, Volume 1 of 2

6.11 Processor Power Rails
Table 6-14. Processor Power Rails Signals
Buffer Link
Signal Name Description Dir. Availability
Type Type

Vcc Processor IA cores power rail I Power — All Processor Lines

VccGT Processor Graphics power rail I Power — All Processor Lines

VDDQ System Memory power rail I Power — All Processor Lines

VccSA Processor System Agent power rail I Power — All Processor Lines

Processor I/O power rail. Consists of VCCIO and

VccIO VccIO_DDR. VCCIO and VCCIO_DDR should be isolated I Power — All Processor Lines
from each other.

VccST Sustain voltage for processor standby modes I Power — All Processor Lines

VccPLL Processor PLLs power rails I Power — All Processor Lines

VccPLL_OC Processor PLLs power rails I Power — All Processor Lines

Vcc_SENSE Isolated, low impedance voltage sense pins. They

can be used to sense or measure voltage near the N/A Power — All Processor Lines
Vss_SENSE silicon.

VccGT_SENSE Isolated, low impedance voltage sense pins. They

can be used to sense or measure voltage near the N/A Power — All Processor Lines
VssGT_SENSE silicon.

VccIO_SENSE Isolated, low impedance voltage sense pins. They

can be used to sense or measure voltage near the N/A Power — All Processor Lines
VssIO_SENSE silicon.

VccSA_SENSE Isolated, low impedance voltage sense pins. They

can be used to sense or measure voltage near the N/A Power — All Processor Lines
VssSA_SENSE silicon.

Datasheet, Volume 1 of 2
113
6.12 Ground, Reserved and Non-Critical to Function
(NCTF) Signals
The following are the general types of reserved (RSVD) signals and connection
guidelines:
• RSVD – these signals should not be connected
• RSVD_TP – these signals should be routed to a test point
• RSVD_NCTF – these signals are non-critical to function and may be left un-
connected

Arbitrary connection of these signals to VCC, VDDQ, VSS, or to any other signal
(including each other) may result in component malfunction or incompatibility with
future processors. See Table 6-15, “GND, RSVD, and NCTF Signals”.

For reliable operation, always connect unused inputs or bi-directional signals to an

appropriate signal level. Unused active high inputs should be connected through a
resistor to ground (VSS). Unused outputs may be left unconnected however, this may
interfere with some Test Access Port (TAP) functions, complicate debug probing and
prevent boundary scan testing. A resistor should be used when tying bi-directional
signals to power or ground. When tying any signal to power or ground, the resistor can
also be used for system testability.

Table 6-15. GND, RSVD, and NCTF Signals

Signal Name Description

Vss Processor ground node

Vss_NCTF Non-Critical To Function: These signals are for package

mechanical reliability.

RSVD Reserved: All signals that are RSVD and RSVD_NCTF should be
RSVD_NCTF left unconnected on the board.
RSVD_TP Intel recommends that all RSVD_TP signals have via test points.

6.13 Processor Internal Pull-Up / Pull-Down

Terminations
Table 6-16. Processor Internal Pull-Up / Pull-Down Terminations
Signal Name Pull Up/Pull Down Rail Value

BPM[3:0] Pull Up / Pull Down VccIO 16-60 ohms

PREQ# Pull Up VccST 3 kohms

PROC_TDI Pull Up VccSTG1 3 kohms

PROC_TMS Pull Up VccSTG1 3 kohms

PROC_TRSN# Pull Down - 3 kohms

CFG[19:0] Pull Up VccIO 3 kohms

Note:
1. For S-Processor Line, the signal name should be VccST

114 Datasheet, Volume 1 of 2

7 Electrical Specifications

7.1 Processor Power Rails

Table 7-1. Processor Power Rails

Power Rail Description Control Availability

VCC Processor IA Cores Power Rail SVID All Processor Lines

VccGT Processor Graphics Power Rails SVID All Processor Lines
VccSA System Agent Power Rail SVID/Fixed (SKU dependent) All Processor Lines
VccIO IO Power Rail Fixed All Processor Lines
VccST Sustain Power Rail Fixed All Processor Lines
VccPLL Processor PLLs power Rail Fixed All Processor Lines
4
VccPLL_OC Processor PLLs OC power Rail Fixed All Processor Lines
Integrated Memory Controller Power Rail Fixed (Memory technology
VDDQ All Processor Lines
dependent)
Notes:
1. N/A
2. N/A
3. N/A
4. VccPLL_OC power rail should be sourced from the VDDQ VR. The connection can be direct or through a load switch,
depending desired power optimization. In case of direct connection (VccPLL_OC is shorted to VDDQ, no load switch), platform
should ensure that VccST is ON (high) while VccPLL_OC is ON (high).
5. N/A
6. N/A

7.1.1 Power and Ground Pins

All power pins should be connected to their respective processor power planes, while all
VSS pins should be connected to the system ground plane. Use of multiple power and
ground planes is recommended to reduce I*R drop.

7.1.2 VCC Voltage Identification (VID)

Intel processors/chipsets are individually calibrated in the factory to operate on a
specific voltage/frequency and operating-condition curve specified for that individual
processor. In normal operation, the processor autonomously issues voltage control
requests according to this calibrated curve using the serial voltage-identifier (SVID)
interface. Altering the voltage applied at the processor/chipset causing operation
outside of this calibrated curve is considered out-of-specification operation.

The SVID bus consists of three open-drain signals: clock, data, and alert# to both set
voltage-levels and gather telemetry data from the voltage regulators. Voltages are
controlled per an 8-bit integer value, called a VID, that maps to an analog voltage level.
An offset field also exists that allows altering the VID table. Alert can be used to inform
the processor that a voltage-change request has been completed or to interrupt the
processor with a fault notification.

Datasheet, Volume 1 of 2
115
 7.2 DC Specifications
The processor DC specifications in this section are defined at the processor signal pins,
unless noted otherwise.
• The DC specifications for the DDR3L/-RS/DDR4 signals are listed in the Voltage and
Current Specifications section.
• The Voltage and Current Specifications section lists the DC specifications for the
processor and are valid only while meeting specifications for junction temperature,
clock frequency, and input voltages. Read all notes associated with each parameter.
• AC tolerances for all DC rails include dynamic load currents at switching frequencies
up to 1 MHz.

7.2.1 Processor Power Rails DC Specifications

7.2.1.1 Vcc DC Specifications

Table 7-2. Processor IA core (Vcc) Active and Idle Mode DC Voltage and Current
Specifications (Sheet 1 of 2)
Symbol Parameter Segment Min Typ Max Unit Note1

Voltage Range for 1,2,3,

Operating
Processor Active All 0.55 — 1.52 V
Voltage 7,12
Operating Mode

Voltage Range for

Idle Voltage Processor Idle Mode All 0 — 0.55 V 1,2,3,7
(Package C6/C7)
S-Processor Line (35W) -
— — 40
Dual Core GT2/GT1
S-Processor Line (51W) -
— — 45
Dual Core GT2/GT1
S-Processor Line (54W) -
— — 58
Dual Core GT1 Pentium/Celeron
S-Processor Line (35W) -
IccMAX — — 66
Maximum Processor Quad Core GT2
(S- A 4,6,7,11
IA Core ICC
Processors) S-Processor Line (65W) -
— — 79
Quad Core GT2
S-Processor Line (91W) -
— — 100
Quad Core GT2 K-SKU
— — — —
— — — —
— — — —
Thermal Design
Current (TDC) for Refer to the appropriate Processor Platform
IccTDC A
processor IA Cores — — — Power Architecture Guide (see related 9
Rail documents)

Voltage Tolerance PS0, PS1 — — ±20

TOBVCC mV 3, 6, 8
PS2, PS3 — — ±20

116 Datasheet, Volume 1 of 2

 Table 7-2. Processor IA core (Vcc) Active and Idle Mode DC Voltage and Current
Specifications (Sheet 2 of 2)
Symbol Parameter Segment Min Typ Max Unit Note1

IL<=0.5 0.5<IL<IccTDC IccTDC<IL<IccMAX

PS0 — — +30/-10 ±10 ±15
Ripple Ripple Tolerance PS1 — — +30/-10 ±15 ±15 mV 3, 6, 8
PS2 — — +30/-10 +30/-10 +30/-10
PS3 — — +30/-10 +30/-10 +30/-10
Loadline slope within S-Processor Line - Quad Core — — 2.1
DC_LL the VR regulation
10,13,
(S- loop capability S-Processor Line - Dual Core — — 2.1 mΩ
Processors) 14
— — — —
AC_LL 10,13,
(S- AC Loadline S-Processor Line — — Same as Max DC_LL (up to 400KHz) mΩ
Processors) 14

T_OVS_TD Max Overshoot time

P_MAX — — — 10/30 μs
TDP/virus mode
V_OVS Max Overshoot at
TDP_MAX/ TDP/virus mode — — — 70/200 mV
virus_MAX
Notes:
1. Unless otherwise noted, all specifications in this table are based on estimates and simulations or empirical data. These specifications will be updated
with characterized data from silicon measurements at a later date.
2. Each processor is programmed with a maximum valid voltage identification value (VID) that is set at manufacturing and cannot be altered. Individual
maximum VID values are calibrated during manufacturing such that two processors at the same frequency may have different settings within the VID
range. Note that this differs from the VID employed by the processor during a power management event (Adaptive Thermal Monitor, Enhanced Intel
SpeedStep Technology, or low-power states).
3. The voltage specification requirements are measured across Vcc_SENSE and Vss_SENSE as near as possible to the processor with an oscilloscope set
to 100-MHz bandwidth, 1.5 pF maximum probe capacitance, and 1 MΩ minimum impedance. The maximum length of ground wire on the probe
should be less than 5 mm. Ensure external noise from the system is not coupled into the oscilloscope probe.
4. Processor IA core VR to be designed to electrically support this current.
5. Processor IA core VR to be designed to thermally support this current indefinitely.
6. Long term reliability cannot be assured if tolerance, ripple, and core noise parameters are violated.
7. Long term reliability cannot be assured in conditions above or below Max/Min functional limits.
8. PSx refers to the voltage regulator power state as set by the SVID protocol.
9. N/A
10. LL measured at sense points.
11. Typ column represents IccMAX for commercial application it is NOT a specification - it is a characterization of limited samples using limited set of
benchmarks that can be exceeded.
12. Operating voltage range in steady state.
13. LL specification values should not be exceeded. If exceeded, power, performance and reliability penalty are expected.
14. By Improving Load Line (Lower LL than Datasheet values, and reporting it to BIOS), customers may obtain slightly better performance although the
frequencies will not be changed.

Datasheet, Volume 1 of 2
117
 7.2.1.2 VccGT DC Specifications

Table 7-3. Processor Graphics (VccGT) Supply DC Voltage and Current Specifications
(Sheet 1 of 2)
Symbol Parameter Segment Min Typ Max Unit Note1

Active
Operating voltage 2,3,6,
All 0.55 — 1.52 V
voltage Range for 8
VccGT
S-Processor Line (35W) -
— — 48
Dual Core GT2/GT1
S-Processor Line (51W) -
— — 48
Dual Core GT2/GT1
S-Processor Line (54W) -
Dual Core GT1 — — 48
Max. Pentium/Celeron
IccMAX_GT Current for
(S- Processor S-Processor Line (35W) - A 6
— — 35
Processors) Graphics Quad Core GT2
Rail S-Processor Line (65W) -
— — 45
Quad Core GT2
— — — —
— — — —
S-Processor Line (91W) -
— — 45
Quad Core GT2 K-SKU
Thermal
Design
Current Refer to the appropriate Processor Platform
IccTDC_GT
(TDC) for — — A 66
IccTDC_GT — Power Architecture Guide (see related
Processor
documents)
Graphics
Rail

VccGT PS0,PS1 — — ±20 mV 3,4

TOBGT
Tolerance PS2,PS3 — — ±20 mV 3,4
— IL<=0.5 0.5<IL<IccTDC IccTDC<IL<IccMAX
PS0 — — +30/-10 ±10 ±15
Ripple
Ripple PS1 — — +30/-10 ±15 ±15 mV 3,4
Tolerance
PS2 — — +30/-10 +30/-10 +30/-10
PS3 — — +30/-10 +30/-10 +30/-10

VccGT 7,9,
3.1
DC_LL Loadline S-Dual Core — — mΩ 10
slope 3.1
S-Quad Core
AC_LL
7,9,
(S- AC Loadline S-Processor Line — — Same as Max DC_LL (up to 400KHz) mΩ
10
Processors)
Max —
T_OVS_MAX Overshoot — — 10 μs
time
Max —
V_OVS_MAX — — 70 mV
Overshoot

118 Datasheet, Volume 1 of 2

 Table 7-3. Processor Graphics (VccGT) Supply DC Voltage and Current Specifications
(Sheet 2 of 2)
Symbol Parameter Segment Min Typ Max Unit Note1

Notes:
1. Unless otherwise noted, all specifications in this table are based on estimates and simulations or empirical data. These specifications will
be updated with characterized data from silicon measurements at a later date.
2. Each processor is programmed with a maximum valid voltage identification value (VID), which is set at manufacturing and cannot be
altered. Individual maximum VID values are calibrated during manufacturing such that two processors at the same frequency may have
different settings within the VID range. This differs from the VID employed by the processor during a power or thermal management
event (Intel Adaptive Thermal Monitor, Enhanced Intel SpeedStep Technology, or low-power states).
3. The voltage specification requirements are measured across VccGT_SENSE and VssGT_SENSE as near as possible to the processor with an
oscilloscope set to 100-MHz bandwidth, 1.5 pF maximum probe capacitance, and 1 MΩ minimum impedance. The maximum length of
ground wire on the probe should be less than 5 mm. Ensure external noise from the system is not coupled into the oscilloscope probe.
4. PSx refers to the voltage regulator power state as set by the SVID protocol.
5. Each processor is programmed with a maximum valid voltage identification value (VID), which is set at manufacturing and cannot be
altered. Individual maximum VID values are calibrated during manufacturing such that two processors at the same frequency may have
different settings within the VID range. This differs from the VID employed by the processor during a power or thermal management
event (Intel Adaptive Thermal Monitor, Enhanced Intel SpeedStep Technology, or low-power states).
6. N/A
7. LL measured at sense points.
8. Operating voltage range in steady state.
9. LL specification values should not be exceeded. If exceeded, power, performance and reliability penalty are expected.
10. By Improving Load Line (Lower LL than Datasheet values, and reporting it to BIOS), customers may obtain slightly better performance
although the frequencies will not be changed.
11. N/A
12. For merged GT/GTx rails the sense point need to be taken from VccGT_SENSE/VSSGT_SENSE, the VccGTx_SENSE/VssGTx_SENSE should be
unconnected (not connected).

Datasheet, Volume 1 of 2
119
 7.2.1.3 VDDQ DC Specifications
Table 7-4. Memory Controller (VDDQ) Supply DC Voltage and Current Specifications
Symbol Parameter Segment Min Typ Max Unit Note1

Processor I/O supply voltage for All

VDDQ (DDR3L/-RS) Typ-5% 1.35 Typ+5% V 3,4,5
DDR3L/-RS
Processor I/O supply voltage for All
VDDQ (DDR4) Typ-5% 1.20 Typ+5% V 3,4,5
DDR4
TOBVDDQ VDDQ Tolerance All AC+DC:± 5 % 3,4
IccMAX_VDDQ Max Current for VDDQ Rail
S — — 2.8 A 2
(DDR3L/-RS) (DDR3L/-RS)

— — — —

IccMAX_VDDQ Max Current for VDDQ Rail

S — — 2.8 A 2
(DDR4) (DDR4)
Notes:
1. Unless otherwise noted, all specifications in this table are based on estimates and simulations or empirical data. These
specifications will be updated with characterized data from silicon measurements at a later date.
2. The current supplied to the DIMM modules is not included in this specification.
3. Includes AC and DC error, where the AC noise is bandwidth limited to under 100 MHz, measured on package pins.
4. No requirement on the breakdown of AC versus DC noise.
5. The voltage specification requirements are measured as near as possible to the processor with an oscilloscope set to 100-MHz
bandwidth, 1.5 pF maximum probe capacitance, and 1 MΩ minimum impedance. The maximum length of ground wire on the
probe should be less than 5 mm. Ensure external noise from the system is not coupled into the oscilloscope probe.

7.2.1.4 VccSA DC Specifications

Table 7-5. System Agent (VccSA) Supply DC Voltage and Current Specifications
Symbol Parameter Segment Min Typ Max Unit Note1,2

VccSA Voltage for S-Processor Line (fixed voltage)

the System — 1.05 — V 3,5
Agent

VccSA S-Processor Line — —

TOBVCCSA ±50(DC+AC+ripple) mV 3
Tolerance
Max Current S-Processor Lines — — 11.1
ICCMAX_VCCSA for VCCSA A
Rail
Max —
T_OVS_MAX Overshoot — — 10 μs
time
Max —
V_OVS_MAX — — 70 mV
Overshoot
Notes:
1. Unless otherwise noted, all specifications in this table are based on estimates and simulations or empirical data. These specifications will be
updated with characterized data from silicon measurements at a later date.
2. Long term reliability cannot be assured in conditions above or below Max/Min functional limits.
3. The voltage specification requirements are measured across VccSA_SENSE and VssSA_SENSE as near as possible to the processor with an
oscilloscope set to 100-MHz bandwidth, 1.5 pF maximum probe capacitance, and 1 MΩ minimum impedance. The maximum length of ground
wire on the probe should be less than 5 mm. Ensure external noise from the system is not coupled into the oscilloscope probe.
4. PSx refers to the voltage regulator power state as set by the SVID protocol.
5. VccSA voltage during boot (Vboot)1.05V for a duration of 2 seconds.
6. LL measured at sense points.
7. LL specification values should not be exceeded. If exceeded, power, performance and reliability penalty are expected.
8. N/A
9. N/A

120 Datasheet, Volume 1 of 2

7.2.1.5 VccIO DC Specifications
Table 7-6. Processor I/O (VccIO) Supply DC Voltage and Current Specifications
Symbol Parameter Segment Min Typ Max Unit Note1,2

Voltage for the memory controller

VccIO S — 0.95 — V 3,4,5,6
and shared cache
TOBVCCIO VccIO Tolerance All AC+DC:± 50 mV 3
S 5.5 A
IccMAX_VCCIO Max Current for VCCIO Rail — —

T_OVS_MAX Max Overshoot time All — — 100 μS 7

V_OVS_MAX Max Overshoot at TDP All — — 20 mV 7
Notes:
1. Unless otherwise noted, all specifications in this table are based on estimates and simulations or empirical data. These
specifications will be updated with characterized data from silicon measurements at a later date.
2. Long term reliability cannot be assured in conditions above or below Max/Min functional limits.
3. The voltage specification requirements are measured across VccIO_SENSE and VssIO_SENSE as near as possible to the
processor with an oscilloscope set to 100-MHz bandwidth, 1.5 pF maximum probe capacitance, and 1 MΩ minimum
impedance. The maximum length of ground wire on the probe should be less than 5 mm. Ensure external noise from the
system is not coupled into the oscilloscope probe.
4. For low BW bus connection between processor and PCH -> VccIO=0.85V.
5. For high BW bus connection between processor and PCH -> VccIO=0.95V.
6. N/A
7. OS occurs during power on only, not during normal operation.

7.2.1.6 VccST DC Specifications

Table 7-7. Vcc Sustain (VccST) Supply DC Voltage and Current Specifications
Symbol Parameter Segment Min Typ Max Units Notes 1,2

Processor Vcc Sustain

VccST All — 1.0 — V 3
supply voltage
TOBST VccST Tolerance All AC+DC:± 50 mV 3
IccMAX_ST Max Current for VccST S-Processor Lines — — 60 mA
Notes:
1. Unless otherwise noted, all specifications in this table are based on estimates and simulations or empirical data. These
specifications will be updated with characterized data from silicon measurements at a later date.
2. Long term reliability cannot be assured in conditions above or below Max/Min functional limits.
3. The voltage specification requirements are measured on package pins as near as possible to the processor with an
oscilloscope set to 100-MHz bandwidth, 1.5 pF maximum probe capacitance, and 1 MΩ minimum impedance. The maximum
length of ground wire on the probe should be less than 5 mm. Ensure external noise from the system is not coupled into the
oscilloscope probe.

7.2.1.7 VccPLL DC Specifications

Table 7-8. Processor PLL (VccPLL) Supply DC Voltage and Current Specifications
Symbol Parameter Segment Min Typ Max Unit Notes1,2

PLL supply voltage (DC + AC

VccPLL All — 1.0 — V 3
specification)

TOBCCPLL VccPLL Tolerance All AC+DC:± 5 % 3

IccMAX_VCCPLL Max Current for VccPLL Rail S-Processor Lines — — 150 mA

Notes:
1. Unless otherwise noted, all specifications in this table are based on estimates and simulations or empirical data. These
specifications will be updated with characterized data from silicon measurements at a later date.
2. Long term reliability cannot be assured in conditions above or below Max/Min functional limits.
3. The voltage specification requirements are measured on package pins as near as possible to the processor with an oscilloscope
set to 100-MHz bandwidth, 1.5 pF maximum probe capacitance, and 1 MΩ minimum impedance. The maximum length of
ground wire on the probe should be less than 5 mm. Ensure external noise from the system is not coupled into the oscilloscope
probe.

Datasheet, Volume 1 of 2
121
Table 7-9. Processor PLL_OC (VccPLL_OC) Supply DC Voltage and Current Specifications
Un
Symbol Parameter Segment Min Typ Max Notes1,2
it

PLL_OC supply All

VccPLL_OC voltage (DC + AC — VDDQ — V 3
specification)

TOBCCPLL_OC VccPLL_OC Tolerance All AC+DC:± 5 % 3

Max Current for S-Processor Line - Dual Core GT2 100

IccMAX_VCCPLL_OC mA
VccPLL_OC Rail S-Processor Line - Quad Core GT2 130

Notes:
1. Unless otherwise noted, all specifications in this table are based on estimates and simulations or empirical data. These
specifications will be updated with characterized data from silicon measurements at a later date.
2. Long term reliability cannot be assured in conditions above or below Max/Min functional limits.
3. The voltage specification requirements are measured on package pins as near as possible to the processor with an
oscilloscope set to 100-MHz bandwidth, 1.5 pF maximum probe capacitance, and 1 MΩ minimum impedance. The maximum
length of ground wire on the probe should be less than 5 mm. Ensure external noise from the system is not coupled into the
oscilloscope probe.

7.2.2 Processor Interfaces DC Specifications

7.2.2.1 DDR3L/-RS DC Specifications

Table 7-10. DDR3L/-RS Signal Group DC Specifications (Sheet 1 of 2)

S-Processor Line
Symbol Parameter Units Notes1
Min Typ Max

VIL Input Low Voltage 0.43* 2, 4, 8,

— — V
VDDQ 9
VIH Input High Voltage 0.57* 3, 4, 8,
— — V
VDDQ 9
RON_UP/DN(DQ) DDR3L/-RS Data Buffer pull-up/down Resistance Trainable Ω 10
RODT(DQ) DDR3L/-RS On-die termination equivalent resistance
Trainable Ω 10
for data signals
VODT(DC) DDR3L/-RS On-die termination DC working point 0.45* 0.5* 0.55*
V 10
(driver set to receive mode) VDDQ VDDQ VDDQ
RON_UP/DN(CK) DDR3L/-RS Clock Buffer pull-up/down Resistance 0.8*Typ 26 1.2*Typ Ω 5, 10
RON_UP/DN(CMD) DDR3L/-RS Command Buffer pull-up/down Resistance 0.8*Typ 20 1.2*Typ Ω 10
RON_UP/DN(CTL) DDR3L/-RS Control Buffer pull-up/down Resistance 0.8*Typ 20 1.2*Typ Ω 5, 10
RON_UP/DN System Memory Power Gate Control Buffer Pull-Up/
down Resistance 40 — 140 Ω
(DDR_VTT_CNTL)

ILI Input Leakage Current (DQ, CK)

0V
— — 1 mA
0.2*VDDQ
0.8*VDDQ
DDR0_Vref_DQ
DDR1_Vref_DQ VREF output voltage Trainable VDDQ/2 Trainable V 9,11
DDR_Vref_CA
DDR_RCOMP[0] ODT resistance compensation Ω 6
RCOMP values are memory
DDR_RCOMP[1] Data resistance compensation Ω 6
topology dependent.
DDR_RCOMP[2] Command resistance compensation Ω 6

122 Datasheet, Volume 1 of 2

Table 7-10. DDR3L/-RS Signal Group DC Specifications (Sheet 2 of 2)
S-Processor Line
Symbol Parameter Units Notes1
Min Typ Max

Notes:
1. Unless otherwise noted, all specifications in this table apply to all processor frequencies.
2. VIL is defined as the maximum voltage level at a receiving agent that will be interpreted as a logical low value.
3. VIH is defined as the minimum voltage level at a receiving agent that will be interpreted as a logical high value.
4. VIH and VIL may experience excursions above VDDQ. However, input signal drivers should comply with the signal quality
specifications.
5. This is the pull up/down driver resistance after compensation. Note that BIOS power training may change these values
significantly based on margin/power trade-off.
6.
7. DDR_VREF is defined as VDDQ/2 for DDR3L/-RS
8. RON tolerance is preliminary and might be subject to change.
9. Processor may be damaged if VIH exceeds the maximum voltage for extended periods.
10. Final value determined by BIOS power training, values might vary between bytes and/or units.
11. The value will be set during the MRC boot training within the specified range.
12. DDR0_Vref_DQ - Not in use in DDR4, DDR1_Vref_DQ = DDR4_CA_ch1, DDR_Vref_CA = DD4_CA_ch0.

Datasheet, Volume 1 of 2
123
7.2.2.2 DDR4 DC Specifications
Table 7-11. DDR4 Signal Group DC Specifications
S-Processor Line
Symbol Parameter Units Notes1
Min Typ Max

Input Low Voltage VREF(INT) - 2, 4, 8,

VIL — — V
0.07*VDDQ 9, 13

Input High Voltage VREF(INT)

3, 4, 8,
VIH + — — V
9, 13
0.07*VDDQ

RON_UP/DN(DQ) DDR4 Data Buffer pull-up/ down Resistance Trainable Ω 11

DDR4 On-die termination equivalent

RODT(DQ) Trainable Ω 11
resistance for data signals

DDR4 On-die termination DC working point

VODT(DC) 0.45*VDDQ 0.5*VDDQ 0.55*VDDQ V 9
(driver set to receive mode)

RON_UP/DN(CK) DDR4 Clock Buffer pull-up/ down Resistance 0.8*Typ 26 1.2*Typ Ω 5, 11

DDR4 Command Buffer pull-up/ down

RON_UP/DN(CMD) 0.8*Typ 20 1.2*Typ Ω 11
Resistance

DDR4 Control Buffer pull-up/ down

RON_UP/DN(CTL) 0.8*Typ 20 1.2*Typ Ω 5, 11
Resistance

RON_UP/DN System Memory Power Gate Control Buffer

Pull-Up/ down Resistance 40 — 140 Ω -
(DDR_VTT_CNTL)

Input Leakage Current (DQ, CK)

0V
ILI — — 1 mA -
0.2*VDDQ
0.8*VDDQ

DDR0_VREF_DQ VREF output voltage

DDR1_VREF_DQ Trainable VDDQ/2 Trainable V 12, 14
DDR_VREF_CA

DDR_RCOMP[0] ODT resistance compensation Ω 6

RCOMP values are memory topology
DDR_RCOMP[1] Data resistance compensation Ω 6
dependent.
DDR_RCOMP[2] Command resistance compensation Ω 6

Notes:
1. Unless otherwise noted, all specifications in this table apply to all processor frequencies.
2. VIL is defined as the maximum voltage level at a receiving agent that will be interpreted as a logical low value.
3. VIH is defined as the minimum voltage level at a receiving agent that will be interpreted as a logical high value.
4. VIH and VIL may experience excursions above VDDQ. However, input signal drivers should comply with the signal quality
specifications.
5. This is the pull up/down driver resistance after compensation. Note that BIOS power training may change these values
significantly based on margin/power trade-off. See processor I/O Buffer Models for I/V characteristics.
6. DDR_RCOMP resistors are installed on the package.
7. DDR_VREF is defined as VDDQ/2 for DDR4
8. RON tolerance is preliminary and might be subject to change.
9. The value will be set during the MRC boot training within the specified range.
10. Processor may be damaged if VIH exceeds the maximum voltage for extended periods.
11. Final value determined by BIOS power training, values might vary between bytes and/or units.
12. VREF values determined by BIOS training, values might vary between units.
13. VREF(INT) is a trainable parameter whose value is determined by BIOS for margin optimization.
14. DDR0_Vref_DQ - Not in use in DDR4, DDR1_Vref_DQ = DDR4_CA_ch1, DDR_Vref_CA = DD4_CA_ch0

7.2.2.3 PCI Express* Graphics (PEG) DC Specifications

Table 7-12. PCI Express* Graphics (PEG) Group DC Specifications (Sheet 1 of 2)
Symbol Parameter Min Typ Max Units Notes1

ZTX-DIFF-DC DC Differential Tx Impedance 80 100 120 Ω 1, 5

124 Datasheet, Volume 1 of 2

Table 7-12. PCI Express* Graphics (PEG) Group DC Specifications (Sheet 2 of 2)
Symbol Parameter Min Typ Max Units Notes1

ZRX-DC DC Common Mode Rx Impedance 40 50 60 Ω 1, 4

ZRX-DIFF-DC DC Differential Rx Impedance 80 — 120 Ω 1
PEG_RCOMP resistance compensation 24.75 25 25.25 Ω 2, 3
Notes:
1. Refer to the PCI Express Base Specification for more details.
2. Low impedance defined during signaling. Parameter is captured for 5.0 GHz by RLTX-DIFF.
3. PEG_RCOMP resistance should be provided on the system board with 1% resistors. COMP resistors are to VCCIO.
PEG_RCOMP- Intel allows using 24.9 Ω 1% resistors.
4. DC impedance limits are needed to ensure Receiver detect.
5. The Rx DC Common Mode Impedance should be present when the Receiver terminations are first enabled to ensure that
the Receiver Detect occurs properly.Compensation of this impedance can start immediately and the 15 Rx Common Mode
Impedance (constrained by RLRX-CM to 50 Ω ±20%) should be within the specified range by the time Detect is entered.

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125
7.2.2.4 Digital Display Interface (DDI) DC Specifications
Table 7-13. Digital Display Interface Group DC Specifications (DP/HDMI)
Symbol Parameter Min Typ Max Units Notes1

DDIB_TXC[3:0] Output Low Voltage

VOL DDIC_TXC[3:0] Output Low Voltage — — 0.25*VCCIO V 1,2
DDID_TXC[3:0] Output Low Voltage

DDIB_TXC[3:0] Output High Voltage

VOH DDIC_TXC[3:0] Output High Voltage 0.75*VCCIO — — V 1,2
DDID_TXC[3:0] Output High Voltage

ZTX-DIFF-DC DC Differential Tx Impedance 80 100 120 Ω

Notes:
1. VccIO depends on segment.
2. VOL and VOH levels depends on the level chosen by the Platform.

7.2.2.5 embedded DisplayPort* (eDP*) DC Specification

Table 7-14. embedded DisplayPort* (eDP*) Group DC Specifications
Symbol Parameter Min Typ Max Units

VOL eDP_DISP_UTIL Output Low Voltage — — 0.1*VCCIO V

VOH eDP_DISP_UTIL Output High Voltage 0.9*VccIO — — V

RUP eDP_DISP_UTIL Internal pull-up 100 — — Ω

RDOWN eDP_DISP_UTIL Internal pull-down 100 — — Ω

eDP_RCOMP eDP resistance compensation 24.75 25 25.25 Ω

ZTX-DIFF-DC DC Differential Tx Impedance 80 100 120 Ω

Notes:
1. COMP resistance is to VCOMP_OUT.
2. eDP_RCOMP resistor should be provided on the system board.

7.2.2.6 CMOS DC Specifications

Table 7-15. CMOS Signal Group DC Specifications
Symbol Parameter Min Max Units Notes1

VIL Input Low Voltage — Vcc * 0.3 V 2, 5

VIH Input High Voltage Vcc * 0.7 — V 2, 4, 5

VOL Output Low Voltage — Vcc * 0.1 V 2

VOH Output High Voltage Vcc * 0.9 — V 2, 4

RON Buffer on Resistance 23 73 Ω -

ILI Input Leakage Current — ±150 μA 3

Notes:
1. Unless otherwise noted, all specifications in this table apply to all processor frequencies.
2. The Vcc referred to in these specifications refers to instantaneous Vcc levels.
3. For VIN between “0” V and Vcc Measured when the driver is tri-stated.
4. VIH and VOH may experience excursions above Vcc. However, input signal drivers should comply with the
signal quality specifications.
5. N/A

126 Datasheet, Volume 1 of 2

7.2.2.7 GTL and OD DC Specifications
Table 7-16. GTL Signal Group and Open Drain Signal Group DC Specifications
Symbol Parameter Min Max Units Notes1

Input Low Voltage (TAP, except PROC_TCK,

VIL — Vcc * 0.6 V 2, 5, 6
PROC_TRST#)

Input High Voltage (TAP, except PROC_TCK,

VIH Vcc * 0.72 — V 2, 4, 5, 6
PROC_TRST#)

VIL Input Low Voltage (PROC_TCK,PROC_TRST#) — Vcc * 0.3 V 2, 5, 6

VIH Input High Voltage (PROC_TCK,PROC_TRST#) Vcc * 0.3 — V 2, 4, 5, 6

VHYSTERESIS Hysteresis Voltage Vcc * 0.2 — V -

RON Buffer on Resistance (TDO) 7 17 Ω -

VIL Input Low Voltage (other GTL) — Vcc * 0.6 V 2, 5, 6

VIH Input High Voltage (other GTL) Vcc * 0.72 — V 2, 4, 5, 6

RON Buffer on Resistance (CFG/BPM) 16 24 Ω -

RON Buffer on Resistance (other GTL) 12 28 Ω -

ILI Input Leakage Current — ±150 μA 3

Notes:
1. Unless otherwise noted, all specifications in this table apply to all processor frequencies.
2. The VccST referred to in these specifications refers to instantaneous VccST/IO.
3. For VIN between 0 V and VccST. Measured when the driver is tri-stated.
4. VIH and VOH may experience excursions above VccST. However, input signal drivers should comply with the signal quality
specifications.
5. N/A
6. Those VIL/VIH values are based on ODT disabled (ODT Pull-up not exist).

7.2.2.8 PECI DC Characteristics

The PECI interface operates at a nominal voltage set by VccST. The set of DC electrical
specifications shown in the following table is used with devices normally operating from
a VccST interface supply.

VccST nominal levels will vary between processor families. All PECI devices will operate
at the VccST level determined by the processor installed in the system.

Table 7-17. PECI DC Electrical Limits (Sheet 1 of 2)

Symbol Definition and Conditions Min Max Units Notes1

Rup Internal pull up resistance 15 45 Ω 3

VIN Input Voltage Range -0.15 VccST + 0.15 V -

VHysteresis Hysteresis 0.15 * VccST — V -

Input Voltage Low- Edge

VIL — 0.3 * VccST V -
Threshold Voltage

Input Voltage High-Edge

VIH 0.7 * VccST — V -
Threshold Voltage

Cbus Bus Capacitance per Node N/A 10 pF -

Cpad Pad Capacitance 0.7 1.8 pF -

Ileak000 leakage current @ 0V — 0.6 mA -

Ileak025 leakage current @ 0.25* VccST — 0.4 mA -

Ileak050 leakage current @ 0.50* VccST — 0.2 mA -

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127
Table 7-17. PECI DC Electrical Limits (Sheet 2 of 2)
Symbol Definition and Conditions Min Max Units Notes1

Ileak075 leakage current @ 0.75* VccST — 0.13 mA -

Ileak100 leakage current @ VccST — 0.10 mA -

Notes:
1. VccST supplies the PECI interface. PECI behavior does not affect VccST min/max specifications.
2. The leakage specification applies to powered devices on the PECI bus.
3. The PECI buffer internal pull up resistance measured at 0.75* VccST.

Input Device Hysteresis

The input buffers in both client and host models should use a Schmitt-triggered input
design for improved noise immunity. Use the following figure as a guide for input buffer
design.

Figure 7-1. Input Device Hysteresis

VTTD

Maximum VP PECI High Range

Minimum VP
Minimum Valid Input
Hysteresis Signal Range
Maximum VN

Minimum VN PECI Low Range

PECI Ground

§§

128 Datasheet, Volume 1 of 2

8 Package Mechanical
Specifications

8.1 Package Mechanical Attributes

The S-Processor Line use a Flip Chip technology available in a Ball Grid Array (BGA)
package. The S-Processor Line uses a Flip Chip technology available in Land Grid Array
(LGA). The following table provides an overview of the mechanical attributes of the
package.

Table 8-1. Package Mechanical Attributes

S-Processor
Line
Package Parameter
Quad Dual
Core Core GT2

Package Type Flip Chip Land Grid

Array

Interconnect Land Grid Array

Package (LGA)
Technology
Lead Free N/A

Halogenated Flame Retardant

Yes
Free

Solder Ball Composition N/A

Ball/Pin Count 1151

Grid Array Pattern Grid Array

Package Land Side Capacitors Yes
Configuration
Die Side Capacitors Yes No

1 Die
Die Configuration Single-Chip Package
with IHS

Package Nominal Package Size 37.5x37.5 mm

Dimensions Min Ball/Pin pitch 0.914 mm

8.2 Package Storage Specifications

Table 8-2. Package Storage Specifications (Sheet 1 of 2)

Parameter Description Min Max Notes

The non-operating device storage temperature.

Damage (latent or otherwise) may occur when
TABSOLUTE STORAGE -25 °C 125 °C 1, 2, 3
subjected to this temperature for any length of
time in Intel Original sealed moisture barrier bag.

The ambient storage temperature limit (in

shipping media) for the sustained period of time
TSUSTAINED STORAGE -5 °C 40 °C 1, 2, 3
as specified below in Intel Original sealed
moisture barrier bag.

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130
Table 8-2. Package Storage Specifications (Sheet 2 of 2)
Parameter Description Min Max Notes

The maximum device storage relative humidity

for the sustained period of time as specified
RHSUSTAINED STORAGE 60% @ 24 °C 1, 2, 3
below in Intel Original sealed moisture barrier
bag.

A prolonged or extended period of time:

TIMESUSTAINED STORAGE associated with customer shelf life in Intel 0 months 6 months 1, 2, 3
Original sealed moisture barrier bag.

Notes:
1. TABSOLUTE STORAGE applies to the un-assembled component only and does not apply to the shipping
media, moisture barrier bags or desiccant. Refers to a component device that is not assembled in a board
or socket that is not to be electrically connected to a voltage reference or I/O signals.
2. Specified temperatures are based on data collected. Exceptions for surface mount re-flow are specified
by applicable JEDEC J-STD-020 and MAS documents. The JEDEC, J-STD-020 moisture level rating and
associated handling practices apply to all moisture sensitive devices removed from the moisture barrier
bag.
3. Post board attach storage temperature limits are not specified. Consult your board manufacturer for
storage specifications.

131 Datasheet, Volume 1 of 2