DME1737
Super I/O with Temperature
Sensing, Quiet Auto Fan and
Glue Logic
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Data Brief
Product Features
■ General Features ■ Multi-Mode™ Parallel Port with ChiProtect™
— 3.3 Volt Operation (SIO Block is 5 Volt Tolerant) — Standard Mode IBM PC/XT®, PC/AT®, and PS/2™
— LPC Interface Compatible Bi-directional Parallel Port
— Programmable Wake-up Event Interface — Enhanced Parallel Port (EPP) Compatible - EPP 1.7
— PC99, PC2001 Compliant and EPP 1.9 (IEEE 1284 Compliant)
— ACPI 2.0 Compliant — IEEE 1284 Compliant Enhanced Capabilities Port
— Multiplexed Command, Address and Data Bus (ECP)
— Serial IRQ Interface Compatible with Serialized IRQ — ChiProtect Circuitry for Protection
Support for PCI Systems — 960 Address, Up to 15 IRQ and Three DMA Options
— PME Interface ■ Keyboard Controller
— ISA Plug-and-Play Compatible Register Set — 8042 Software Compatible
— 25 General Purpose Input/Output Pins — 8 Bit Microcomputer
— System Management Interrupt — 2k Bytes of Program ROM
■ AC Power Failure Recovery — 256 Bytes of Data RAM
■ Watchdog Timer — Four Open Drain Outputs Dedicated for
Keyboard/Mouse Interface
■ 2.88MB Super I/O Floppy Disk Controller — Asynchronous Access to Two Data Registers and One
— Licensed CMOS 765B Floppy Disk Controller Status Register
— Software and Register Compatible with SMSC's — Supports Interrupt and Polling Access
Proprietary 82077AA Compatible Core — 8 Bit Counter Timer
— Supports One Floppy Drive — Port 92 Support
— Configurable Open Drain/Push-PullOutput Drivers — Fast Gate A20 and KRESET Outputs
— Supports Vertical Recording Format
— 16-Byte Data FIFO
■ Motherboard GLUE Logic
— 100% IBM® Compatibility — IDE Reset Output
— Detects All Overrun and Underrun Conditions — (4) Buffered PCI Reset Outputs with software controlled
— Sophisticated Power Control Circuitry (PCC) Including reset capability - default transparent
Multiple Powerdown Modes for Reduced Power — 3VSB Gate and 3V Gate signal generation
Consumption — Front Panel Reset Debouncing and Power Good Signal
— DMA Enable Logic Generation
— Data Rate and Drive Control Registers — Power Supply Turn On Circuitry with Support for power
— 480 Address, Up to Eight IRQ and Three DMA Options button on PS/2 Keyboard
— Support 3 Mode FDD — Resume Reset Signal Generation
— SMBus Isolation Circuitry (2 sets external and 1 set
■ Enhanced Digital Data Separator internal for Hardware Monitoring Block)
— 2 Mbps, 1 Mbps, 500 Kbps, 300 Kbps, 250 Kbps Data — SMBus 2.0 compliant interface for Hardware Monitoring
Rates — LED Control (2)
— Programmable Precompensation Modes
■ Fan Control
■ Serial Ports — 5 PWM (Pulse width Modulation) Outputs
— Two Full Function Serial Ports — Low frequency and high frequency PWM support
— High Speed NS16C550A Compatible UARTs with — 6 Fan Tachometer Inputs
Send/Receive 16-Byte FIFOs — Programmable automatic fan control based on
— Supports 230k and 460k Baud temperature
— Programmable Baud Rate Generator — Interrupt Pin for out-of-limit Fantach Events
— Modem Control Circuitry — Fantach events generate PME’s and/or Speaker
— 480 Address and 15 IRQ Options warning
■ Infrared Port ■ Temperature Monitor
— Multiprotocol Infrared Interface — Monitoring of Two Remote Thermal Diodes
— IrDA 1.0 Compliant — Internal Ambient Temperature Measurement
— SHARP ASK IR — Limit Comparison of all Monitored Values
— 480 Addresses, Up to 15 IRQ — Interrupt Pin for out-of-limit Temperature Indication
— Thermal events generate PME’s and/or Speaker
warning
— Configurable offset for internal or external temperature
channels.
SMSC DME1737 PRODUCT PREVIEW Rev. 05-21-04
■ Voltage Monitor
— Monitor Power supplies (5V, +5VTR, +12V, Vccp, Vbat, VTR, and VCC)
— Limit Comparison of all Monitored Values
— Interrupt Pin for out-of-limit Voltage Indication
— Voltage events generate PME’s and/or Speaker warning
■ Security Features
— Security Key Register (32 byte) for Device Authentication
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■ 6 VID (Voltage Identification) Inputs
■ Phoenix Keyboard BIOS ROM
■ 128 QFP Package
ORDERING INFORMATION
Order Number(s):
DME1737-NR for 128 pin QFP package
80 Arkay Drive
Hauppauge, NY 11788
(631) 435-6000
FAX (631) 273-3123
Copyright © SMSC 2004. All rights reserved.
Circuit diagrams and other information relating to SMSC products are included as a means of illustrating typical applications. Consequently, complete
information sufficient for construction purposes is not necessarily given. Although the information has been checked and is believed to be accurate, no
responsibility is assumed for inaccuracies. SMSC reserves the right to make changes to specifications and product descriptions at any time without
notice. Contact your local SMSC sales office to obtain the latest specifications before placing your product order. The provision of this information does
not convey to the purchaser of the described semiconductor devices any licenses under any patent rights or other intellectual property rights of SMSC
or others. All sales are expressly conditional on your agreement to the terms and conditions of the most recently dated version of SMSC's standard
Terms of Sale Agreement dated before the date of your order (the "Terms of Sale Agreement"). The product may contain design defects or errors
known as anomalies which may cause the product's functions to deviate from published specifications. Anomaly sheets are available upon request.
SMSC products are not designed, intended, authorized or warranted for use in any life support or other application where product failure could cause
or contribute to personal injury or severe property damage. Any and all such uses without prior written approval of an Officer of SMSC and further
testing and/or modification will be fully at the risk of the customer. Copies of this document or other SMSC literature, as well as the Terms of Sale
Agreement, may be obtained by visiting SMSC’s website at http://www.smsc.com. SMSC is a registered trademark of Standard Microsystems
Corporation (“SMSC”). Product names and company names are the trademarks of their respective holders.
SMSC DISCLAIMS AND EXCLUDES ANY AND ALL WARRANTIES, INCLUDING WITHOUT LIMITATION ANY AND ALL IMPLIED WARRANTIES
OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, TITLE, AND AGAINST INFRINGEMENT AND THE LIKE, AND ANY AND
ALL WARRANTIES ARISING FROM ANY COURSE OF DEALING OR USAGE OF TRADE.
IN NO EVENT SHALL SMSC BE LIABLE FOR ANY DIRECT, INCIDENTAL, INDIRECT, SPECIAL, PUNITIVE, OR CONSEQUENTIAL DAMAGES;
OR FOR LOST DATA, PROFITS, SAVINGS OR REVENUES OF ANY KIND; REGARDLESS OF THE FORM OF ACTION, WHETHER BASED ON
CONTRACT; TORT; NEGLIGENCE OF SMSC OR OTHERS; STRICT LIABILITY; BREACH OF WARRANTY; OR OTHERWISE; WHETHER OR
NOT ANY REMEDY OF BUYER IS HELD TO HAVE FAILED OF ITS ESSENTIAL PURPOSE, AND WHETHER OR NOT SMSC HAS BEEN
ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
Rev. 05-21-04 2 SMSC DME1737
PRODUCT PREVIEW
General Description
The DME1737 is a 3.3V (Super I/O Block is 5V tolerant) PC99/PC2001 compliant Super I/O controller
with an LPC interface. DME1737 also includes Hardware Monitoring capabilities, enhanced Security
www.datasheet4u.com features, Power Control logic and Motherboard Glue logic.
The DME1737's hardware monitoring capability includes temperature, voltage and fan speed
monitoring. It has the ability to alert the system to out-of-limit conditions and automatically control the
speeds of multiple fans. There are four analog inputs for monitoring external voltages of +5V, +5VTR,
+12V and Vccp (core processor voltage), as well as internal monitoring of the SIO's VCC, VTR, and
Vbat power supplies. The DME1737 includes support for monitoring two external temperatures via
thermal diode inputs and an internal sensor for measuring ambient temperature. The nHWM_INT pin
is implemented to indicate out-of-limit temperature, voltage, and FANTACH conditions. The hardware
monitoring block of the DME1737 is accessible via the System Management Bus (SMBus). The same
interrupt event reported on the nHWM_INT pin also creates PME wakeup events and speaker alarm
annunciation.
The Motherboard Glue logic includes various power management and system logic including
generation of nRSMRST, SMBus buffers, and buffered PCI reset outputs.
The DME1737 incorporates complete legacy Super I/O functionality including an 8042 based keyboard
and mouse controller, an IEEE 1284, EPP, and ECP compatible parallel port, one serial port that is
16C550A UART compatible, one IrDA 1.0 infrared ports, and a floppy disk controller with SMSC's true
CMOS 765B core and enhanced digital data separator, The true CMOS 765B core provides 100%
compatibility with IBM PC/XT and PC/AT architectfures and is software and register compatible with
SMSC's proprietary 82077AA core. System related functionality, which offers flexibility to the system
designer, General Purpose I/O control functions, control of two LED's, and fan control using fan
tachometer inputs and pulse width modulator (PWM) outputs
The DME1737 is ACPI 1.0/2.0 compatible and therefore supports multiple low power-down modes. It
incorporates sophisticated power control circuitry (PCC), which includes support for keyboard and
mouse wake-up events.
The DME1737 supports the ISA Plug-and-Play Standard register set (Version 1.0a). The I/O Address,
DMA Channel and hardware IRQ of each logical device in the DME1737 may be reprogrammed
through the internal configuration registers. There are up to 480 (960 - Parallel Port) I/O address
location options, a Serialized IRQ interface, and Three DMA channels.
SMSC DME1737 3 Rev. 05-21-04
PRODUCT PREVIEW
Block Diagram
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SPEAKER
LED1*
LED2*
WDT*
CLK32 Speaker WDT
CLOCK LEDs
CLOCKI GEN
Multi-Mode PD[7,0]
SER_IRQ Parallel Port
SERIAL BUSY, SLCT, PE,
PCI_CLK IRQ with
ChiProtect TM/FDC nERROR, nACK
MUX nSTROBE, nINIT,
LAD[3:0] Internal Bus (see nSLCTIN, nALF
LPC
(Data, Address, and Control lines) LPC47B27x)
LFrame# Bus Interface
TXD1*, RXD1
LDRQ# High-Speed
16550A nCTS1, nRTS1*
PCI_RESET# UART nDSR1, nDTR1
PORT 1 nDCD1, nRI1
IO_PME_S3*
IO_PME_S5* Power Mgmt TXD2 (IRTX)*,
IO_SMI* RXD2 (IRRX)*
High-Speed
GP1[0:4]*, GP21*,GP22* 16550A CTS2*, RTS2 *
GP27*, GP32*,GP33* General UART
GP36*, GP37* , PORT 2 DSR2*, DTR2*
Purpose
GP4[0,2,3]* I/O
GP5[0:1]*, GP6[0:1]* 32 byte DCD2*, RI2*
Security
nMTR0, nTRK0, InNDEX SMSC Key nIDE_RSTDRV*
Proprietary Register PCI Reset
nW GATE, nHDSEL Outputs nPCIRST_OUT[1:4]*
82077
DRVDEN0*,nW RTPRT Compatible MCLK*, MDAT*
nDIR, nSTEP Floppydisk Keyboard/Mouse A20M*
PCI_RESET#
Controller with 8042
nDSKCHG, nDS0, nKBDRST*
14.318Mhz
Digital Data
HWN_INT
controller KCLK*,KDAT*
SLP_S3#
SLP_S5#
nRDATA,nW DATA Separator &
96 Mhz
W rite Precom-
VCC
Vbat
VTR
nFPRST, PB_IN#
pensation
PW RGD_PS
SLP_S3#, SLP_S5#
`
Power Control PW RGD_CPU ,
and Recovery PW RGD_3V
S n3VSB_GAT E
n3V_GATE
M nRSMRST
SMbus
Hardware
SDA1
Isola-
b
SCLK1
tion
Monitor
SDA2
Switch
u
SCLK2
s Intruder nINTRD_IN
Detection
FANTACHA*
FANTACHB*
FANTACH1
FANTACH2
nHWM_INT
VID5 / FANTACH3
PWMA*, PWMB*
FANTACH4/ADDR_SEL
+5VTR_IN
+12V_IN
PWM1/xTest Out
VID0
VID1
VID2
VID3
VID4
PWM2
PWM3/ ADDR_EN#
VCCP_IN
Remote1+
Remote2+
Remote1-
Remote2-
+5V_IN
Note 1: This diagram does not show power and
SCLK
SDA
ground connections.
Note 2: Signal names followed by an asterisk (*) are
located on multifunction pins. This diagram is
designed to show the various functions available on
the chip and should not be used as a pin layout.
Figure 1 DME1737 Block Diagram
Rev. 05-21-04 4 SMSC DME1737
PRODUCT PREVIEW
Package Outline
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Figure 2 128 Pin QFP Package Outline, 14X20X2.7 Body, 3.2 mm Footprint
Table 1 128 Pin QFP Package Parameters
MIN NOMINAL MAX REMARKS
A ~ ~ 3.4 Overall Package Height
A1 0.05 ~ 0.5 Standoff
A2 2.55 ~ 3.05 Body Thickness
D 23.00 23.20 23.40 X Span
D1 19.90 20.00 20.10 X body Size
E 17.00 17.20 17.40 Y Span
E1 13.90 14.00 14.10 Y body Size
H 0.09 ~ 0.20 Lead Frame Thickness
L 0.73 0.88 1.03 Lead Foot Length
L1 ~ 1.60 ~ Lead Length
e 0.50 Basic Lead Pitch
q 0o ~ 7o Lead Foot Angle
W 0.10 ~ 0.30 Lead Width
R1 0.08 ~ ~ Lead Shoulder Radius
R2 0.08 ~ 0.30 Lead Foot Radius
ccc ~ ~ 0.08 Coplanarity
Notes:
1. Controlling Unit: millimeter.
2. Controlling Unit: millimeter.
3. Tolerance on the position of the leads is ± 0.04 mm maximum.
4. Package body dimensions D1 and E1 do not include the mold protrusion.
5. Maximum mold protrusion is 0.25 mm.
6. Dimension for foot length L measured at the gauge plane 0.25 mm above the seating plane.
7. Details of pin 1 identifier are optional but must be located within the zone indicated.
SMSC DME1737 5 Rev. 05-21-04
PRODUCT PREVIEW
