PRODUCT

SPECIFICATION
LCD Display Motherboard
HD-3568S
V1.1

Shenzhen Huidu Technology Co., Ltd.

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目录 Contents
01 Chapter I product description······················································3
Ⅰ. Overview·····································································3
Ⅱ. Features·····································································3

02 Chapter II Specifications····························································4
Ⅰ. Basic Parameters·························································4
1. Hardware Parameters·················································4
2. Software Parameters··················································5
Ⅱ. Product Size Specifications············································6
Ⅲ. Product Interface Diagram··············································7
Ⅳ. Interface Parameter Description·······································7
1. PWR / DC (Power input) Interface·································7
2. MIC (Microphone) Interface and Definition······················8
3. LED/IR (Remote control) Interface and Definition·············8
4. EDP_BL (EDP Backlight) Interface······························ 9
5. LVDS_BL(LVDS Backlight) Interface·····························9
6. LVDS Interface and Definition······································10
7. V-By-One Interface and Definition·································11
8. EDP Interface and Definition········································12
9. USB Interface and Definition········································13
10. SPK (Power amplifier) Interface····································13
11. GPIO Interface(extension) and Definition························14
12. UART (Serial Port) ····················································15
13. DEBUG Interface·······················································15
14. CTP Interface and Definition·········································16
15. KEY Interface Definition···············································16
16. MCU Interface···························································· 17
17. Other Interfaces·························································18

03 Chapter III Communication Methods·············································18

Ⅰ. Wi-Fi Update Program····················································18
Ⅱ. U-disk update program···················································19
Ⅲ. TF Card Update Program················································19
Ⅳ. Ethernet cable to Update················································· 20
V. Internet Update······························································20

04 Chapter IV Appendix: Product Appearance····································21

Chapter I Product Description

Ⅰ. Overview

HD-3568S is a well-built all-in-one motherboard, which adopts Rockchip RK3568 quad-core chip solution,
equipped with Android11 system, and the main frequency can reach up to 2.0GHz, with super performance.
Adopt Mali-G52 GPU, support 4K 60fps H.265/H.264 video encoding. Support infrared remote control, Wi-Fi,
RJ45 and other rich interfaces, making the product more versatile and widely used in intelligent control fields
such as advertising machines, interactive all-in-one machines, security, medical, transportation, finance,
industrial control, etc.

Ⅱ. Features

 High performance. The RK3568 chip adopts the quad-core ARM Cortex-A55 architecture, and the main frequency
can reach up to 2.0GHz, which is a qualitative leap in performance. It can play high-definition video in various
formats and handle complex interactive operations.

 High stability. RK3568 Android all-in-one board adds unique technology to ensure product stability in terms of
hardware and software, and can make the final product reach 7*24 hours unattended.

 High integration. RK3568 Android all-in-one board integrates Ethernet, EDP, Wi-Fi, power amplifier, and TF
expansion card, USB expansion port, IR remote control function, TP, HDMI, LVDS, V-By-One interface, backlight
control, microphone and other functions, which greatly simplifies the design of the whole machine.

 High scalability. 7 USB (5 pins, 2 standard USB 3.0), 4 serial ports + 1 scalable debug serial port + 1 MCU
programming serial port, 5 IO expansion ports can expand more peripheral devices.

 High definition. Supports LCD displays with various LVDS/EDP/HDMI/V-By-One interfaces, and supports cutting
screens of various sizes and resolutions.

 It perfectly supports multiple mainstream touch screen functions such as multi-point infrared touch, multi-point
capacitive touch, multi-point nano-film touch, multi-point acoustic wave touch, and multi-point optical touch.

HD-3568S

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Chapter II Specifications
Ⅰ. Basic Parameters

1. Hardware Parameters

Hardware Specifications
CPU RK3568, quad-core, up to 2.0GHz

GPU Mali-G52 GPU supports OpenGL ES 1.1/2.0/3.2, OpenCL 2.0 and Vulkan 1.1

Memory Standard 2GB, optional 4GB

eMMC standard 16GB optional 32GB

Built-in storage capacity
TF Card expansion (can be used to expand SSD)
Support RJ45 R/A 100M Ethernet, support Ethernet;
Network Support 2.4GHz Wi-Fi; support Wi-Fi 802.11b/g/n protocol;
Support Bluetooth 4.2.
Support 0 degree, 90 degree, 180 degree, 270 degree manual rotation; optional gravity sensor,
Image rotation
support automatic rotation
1*LVDS interface (single/dual, 6-bit/8-bit), support 3.3V/5V/12V power supply
Display interface 1 channel EDP interface, 1 channel HDMI 4K display, and 1 channel V-By-One interface display
Onboard backlight control supports 12V backlight power supply

Audio Support standard left and right channel line output; support 3.5mm audio output interface

Amplifier 2-way output (8 ohms 5 watts dual audio amplifier output)

Microphone Differential MIC input

Support USB multi-point infrared touch, multi-point capacitive touch, multi-point Nano film touch,
Touch screen multi-point sound wave
Touch, multi-point optical touch and more.

RTC Built-in real-time clock function

USB 1-way USB-3.0 HOST, 1-way USB 3.0 OTG, 5-way extended USB port

Infrared Infrared receiving socket, support infrared remote control function

LED 1*power status LED (green), 1*system LED (green, flashing by default)

Button 1*upgrade key

Serial port 4-way UART, 1-way DEBUG, 1-way MCU programming serial port; optional RS232, RS485

GPIO 5-way IO input and output control, can be used for key scanning control

KEY Support physical switch

Input: AC100-240V.50-60HZ, Output: DC12V 1.5A

Power Adapter
(The surge voltage is required to be less than 18V, and the ripple voltage is less than 100mV)

Storage humidity 10%～90%, no condensation

Storage temperature -40℃~70℃

Operating temperature -20℃~70℃

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2. Software Parameters

Software Specifications

Operating system Android 11.0

Audio MP3,WMA,WAV, APE, FLAC, AAC, OGG,M4A,3GPP and other formats

Video Support H.265, H.264, VP8, MAV, WMV, AVS, H.263, MPEG4 and other video formats

Picture Support JPG, BMP, PNG and other image formats

APK Installer, Email, Calculator, Browser, Voice Recorder, Calendar, Settings, Clock, Video
Built-in APP default
Player, Search, Contacts, Gallery, Downloads, Camera, Music, Explorer, etc.

Language Support multi-languages

Input method Standard Android keyboard, optional third-party input method

Original ecological Android system, open root privileges, and can carry out product customization
development

Real-time remote monitoring, system crash self-recovery, 7*24 hours unattended

Support OTA remote upgrade; support U disk upgrade

System Management
Support boot animation definition

Support server/standalone mode switching

Support Wi-Fi hotspot

System watchdog Support software watchdog, hardware watchdog

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Ⅱ. Product Size Specifications

unit：（mm）

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Ⅲ. Product Interface Diagram

Ⅳ. Interface Parameter Description

1. PWR / DC (Power input) Interface

It adopts 12V DC power supply and only allows the board subsystem to be powered from the DC socket and
power socket.

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 No. Definition Attributes Description

6 12V input 12V input

5 12V input 12V input

4 GND ground wire ground wire

3 GND ground wire ground wire

2 5VS input standby 5V input

1 STB output standby signal output

2. MIC Interface (Microphone)

No. Definition Attributes Description

1 MIC+ input MIC+input

2 MIC- input MIC-input

3. LED/IR (Remote control) Interface and Definition

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 No. Definition Attributes Description

1 RED output red light

2 3V3 power supply 3.3V output

3 GRN output green light

4 IO6 output remote control signal output

5 IR input remote control signal input

6 GND ground wire ground wire

7 3V3 power supply 3.3Voutput

4. EDP_BL (EDP Backlight) Interface

No. Definition Attributes Description

1 GND Ground Ground

2 GND Ground Ground

3 ADJ Output Backlight brightness control

4 EN Output Backlight enable control

5 12V Power 12V output

6 12V Power 12V output

5. LVDS_BL (LVDS Backlight) Interface

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 No. Definition Attributes Description

1 GND Ground Ground

2 GND Ground Ground

3 ADJ Output Backlight brightness control

4 EN Output Backlight enable control

5 12V Power 12V output

6 12V Power 12V output

6. LVDS Interface and Definition

General LVDS interface definition, support single / dual, 6/8 / 10-bit 1080P LVDS screen. The screen voltage can be
selected through a jumper cap, and it can be selected to support 3.3V / 5V / 12V screen power supply.
In order to avoid burning boards and screens, please note the following:
1. Please confirm whether the screen specification book screen supply voltage is correct, whether the board's
corresponding power supply can meet the maximum working current of the screen.
2. Please use multimeter to confirm that the power supply selected by the jumper cap is correct.
3. When connecting the 6 / 8-bit LVDS screen cable, install it near pin1.

No. Definition Attributes Description

1 VCC

2 VCC Power 3.3V / 5V / 12V optional output

3 VCC

4 GND Ground Ground

5 GND Ground Ground

6 GND Ground Ground

7 RXO0- Output Odd 0 -

8 RXO0+ Output Odd 0+

9 RXO1- Output Odd 1 -

10 RXO1+ Output Odd 1+

11 RXO2- Output Odd 2 -

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 12 RXO2+ Output Odd 2+

13 GND Ground Ground

14 GND Ground Ground

15 RXOC- Output Odd Clock-

16 RXOC+ Output Odd Clock+

17 RXO3- Output Odd 3 -

18 RXO3+ Output Odd 3+

19 RXE0- Output Even 0 -

20 RXE0+ Output Even 0+

21 RXE1- Output Even 1 -

22 RXE1+ Output Even 1+

23 RXE2- Output Even 2 -

24 RXE2+ Output Even 2+

25 GND Ground Ground

26 GND Ground Ground

27 RXEC- Output Even Clock -

28 RXEC+ Output Even Clock+

29 RXE3 - Output Even 3 -

30 RXE3+ Output Even 3+

Note: Do not operate with power on, Do not hot swap.

7、V-By-One Interface Description

Serial number Definition Attributes Describe

1 GND ground wire ground wire

2 VBX-7P output Pixe10 Positive Data

3 VBX-7N output Pixe10 Negative Data

4 GND ground wire ground wire

5 VBX-6P output Pixe11 Positive Data

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 6 VBX-6N output Pixe11 Negative Data

7 GND ground wire ground wire

8 VBX-5P output Pixe12 Positive Data

9 VBX-5N output Pixe12 Negative Data

10 GND ground wire ground wire

11 VBX-4P output Pixe13 Positive Data

12 VBX-4N output Pixe13 Negative Data

13 GND ground wire ground wire

14 VBX-3P output Pixe14 Positive Data

15 VBX-3N output Pixe14 Negative Data

16 GND ground wire ground wire

17 VBX-2P output Pixe15 Positive Data

18 VBX-2N output Pixe15 Negative Data

19 GND ground wire ground wire

20 VBX-2P output Pixe16 Positive Data

21 VBX-2N output Pixe16 Negative Data

22 GND ground wire ground wire

23 VBX-1P output Pixe17 Positive Data

24 VBX-1N output Pixe17 Negative Data

25 GND ground wire ground wire

26 LOCKN-OUT output CLOCK

27 HTPDN output TCON

28 SEL TCON

29 AGP TCON

30 SCN-EN TCON

8. EDP Interface and Definition

This interface is a common EDP screen interface, in the form of 10 * 2 double row pins, 3.3V screen
power supply。
In order to avoid burning boards and screens, please note the following:
Confirm that the screen specification book screen supply voltage is correct and whether the board's
corresponding power supply can meet the screen's maximum working current.

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 No. Definition Attributes Description

1 PVCC Power Output

2 PVCC Power Output

3 GND Ground Ground

4 GND Ground Ground

5 D0- Output Display Port Lane 0 negative output

6 D0+ Output Display Port Lane 0 positive output

7 D1- Output Display Port Lane 1 negative output

8 D1+ Output Display Port Lane 1 positive output

9 D2- Output Display Port Lane 2 negative output

10 D2+ Output Display Port Lane 2 positive output

11 D3- Output Display Port Lane 3 negative output

12 D3+ Output Display Port Lane 3 positive output

13 GND Ground Ground

14 GND Ground Ground

15 AUX- Output Display Port AUX- chanenl negative singal

16 AUX+ Output Display Port AUX+ chanenl positive singal

17 GND Ground Ground

18 GND Ground Ground

19 GND Ground Ground

20 HPD Input Screen heat plug board detection signal

9. USB Interface and Definition

The board has 2 USB standard interfaces and 4 USB pins, one of which is shared with the 4G module.

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 No. Definition Attributes Description

1 5V power supply 5Voutput

2 DM input/output DM

3 DP input/output DP

4 GND ground wire ground wire

10. SPK (Power amplifier) Interface

No. Definition Attributes Description

1 SPKR+ output right channel+

2
SPKR- output right channel-

3
SPKL- output left channel-

4 SPKL+ output left channel+

11. GPIO Interface (Extension) and Definition

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 No. Definition Attributes Description
1 GND ground wire ground wire

2 IO1 IO1 IO1

3 IO2 IO2 IO2

4 IO3 IO3 IO3

5 IO4 IO4 IO4

6 IO5 IO5 IO5

7 3V3 power supply 3.3V output

12. UART (Serial port) Interface

The board have to two sets of ordinary UART serial ports, which can support the UART serial port devices on the
market.
Precautions:
Check the serial port voltage matches or not. Cannot directly connect to RS232, RS485 serial devices.
2.TX，RX Please confirm the connection is correct or not.

No. Definition Attributes Description

1 VCC Power 3.3V output，Configurable

2 TX Output TX

3 RX Input RX

4 GND Ground Ground

1.UART0/UART7 can adjust RS485 through hardware

2.UART1/UART8 can adjust RS232 through hardware
3.UART1 default Bluetooth function

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13. DEBUG Interface

No. Definition Attributes Description

1 3V3 power supply 3.3Voutput

2 TX output TX

3 RX input RX

4 GND ground wire ground wire

14. CTP Interface and Definition

No. Definition Attributes Description

1 3V3 power supply 3.3V output

2 SCL input/output I2Cclock

3 SDA input/output I2Cdata

4 INT input/output to interrupt

5 RST input/output reset

6 GND ground wire ground wire

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15. KEY Interface Definition

No. Definition Attributes Description

Power switch, which can be connected to
1 ON Power switch
an external button to control the switch
2 EX reset signal Reset signal interface, reserved

3 KEY ADC ADC reserve

4 GND ground wire ground wire

16. MCU Interface

No. Definition Attributes Description

1 3V3 power supply 3.3V output

2 TX output TX

3 RX input RX

4 GND ground wire ground wire

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17. Other Interfaces

SD card Data storage, up to 32G

Storage interface HOST interface, support data storage,
USB data import, USB mouse keyboard,
camera, touch screen, etc.

Ethernet interface RJ45 interface Support 100M wired network

Support HDMI output, maximum support

HDMI interface Standard interface
4K

Chapter III Communication Methods

Ⅰ. Wi-Fi Update Program

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Ⅱ. U-disk update program

Ⅲ. TF Card Update Program

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Ⅳ. Ethernet cable to Update

V. Internet Update

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Chapter IV Appendix: Product Appearance

Note:
1. The 4G module is an optional accessory that is installed on the PCIE port. If the picture is different from the actual
product, it is not a fake or inferior product. If you have any questions, please contact us for confirmation.
2. The model label is attached to the sales product. The product picture in the specification is different from the actual
product. It is not a fake or inferior product. If you have any questions, please contact us for confirmation.
3. Do not operate with power on, Do not hot swap.

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