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目录

ItemContent
Product No.S1A-BM1688
VersionV1.0
Release Date2026-04-14
Effective Date2026-04-14
Document StatusUnder Revision
Compiled byWang Zhihai
Reviewed by-
Confidentiality LevelPublic


 

VersionRelease DateRevision Record
V1.02026-04-14Initial release






1. Interface Diagram






2. Port Description

序号

No. 

名称

Name 

附图

Illustration

规格及使用方法

Specifications & Operation

1

DC

电源输入

Power Input

Image Modified

DC 12V 3A. Please use the matched power adapter.
 DC port size: 5.5-2.1MM

2

HDMI

输入

Input 

Image Modified

HDMI

输入，最高支持4K 60HZ。

input, up to 4K 60Hz supported.

sudo systemctl disable SophonHDMI

reboot

sudo insmod /mnt/system/ko/v4l2_lt6911.ko

cd /opt/sophon/sophon-soc-libisp_1.0.0/bin/

./isp_tool_daemon

The current demo only supports 4K60. Modify the firmware for other resolutions.

3

Recovery

按键

Key

Image Modified

For USB firmware upgrade.

4

HDMI 输出

 HDMI Output

Image Modified

Supports up to 4K 60HZ.

 

5-6

以太网

Ethernet 

Image Modified

1000M x2
 ETH1: Static IP; ETH0: Dynamic IP

7-8-9

USB

口

Ports

Image Modified

USB1: USB3.0 OTG port for firmware upgrade (TF card upgrade recommended).
 USB2 & USB3: USB3.0 HOST ports.

10

串口、

 UART & GPIO

口

Ports 

Image Modified

RS485 – ttyS1, maximum baud rate 115200bps
 RS232 – ttyS3, maximum baud rate 115200bps
 Test with the supporting UART script.

Max load: 1A. Wire length shall not exceed 1M.

GPIO-IN

Low level or floating: CPU reads "1".
 High level (3.3-12V): CPU reads "0".

GPIO IN1：

echo 338 > /sys/class/gpio/export

echo in > /sys/class/gpio/gpio338/direction

cat /sys/class/gpio/gpio338/value

GPIO IN2：

echo 339 > /sys/class/gpio/export

echo in > /sys/class/gpio/gpio339/direction

cat /sys/class/gpio/gpio339/value

GPIO-OUT

CPU outputs "1": port outputs 3.3V.
 CPU outputs "0": port outputs 0V.

GPIO output is open-drain with 3.3V@10K pull-up. It can control 5V-12V devices (external pull-up required).

GPIO OUT1：

echo 335 > /sys/class/gpio/export

echo out > /sys/class/gpio/gpio335/direction 

echo 0 > /sys/class/gpio/gpio335/value

echo 1 > /sys/class/gpio/gpio335/value

GPIO OUT2 ：

echo 334 > /sys/class/gpio/export

echo out > /sys/class/gpio/gpio334/direction 

echo 0 > /sys/class/gpio/gpio334/value

echo 1 > /sys/class/gpio/gpio334/value

11

SIM

Image Modified

Nano-SIM slot for 4G

、5G 网络 SIM卡位，为Nano卡。

and 5G networks.

12

调试口

Debug Port

Image Modified

Built-in USB to UART chip CH341, baud rate 115200bps.
 Driver download: https://www.wch.cn/products/CH340


 Supports


 Supports firmware upgrade and data storage.

13

TF Card Slot

Image Added

Available for firmware upgrade and data storage.

13

TF 卡

可用于升级固件；支持数据存储。

14-15

 

Image Modified

指示灯

Indicator Lights

16

电源端口

Power Port

Image Modified

2.0MM 4P, connected in parallel with DC port.

17

风扇接口

Fan Interface 1

Image Modified

1.25MM 3P with PWM. Default for 12V fan.

18

风扇接口

Fan Interface 2

Image Modified

1.25MM 4P with PWM. Default for 12V fan.

19

风扇电源切换电感

Fan Power Switch Inductor

Image Modified

Used to switch power supply voltage for fans.

20

GPIO

口

Port

Image Modified

Pin

电平
Level
功能
Function

1/3

3.3V3.
3V电源
3V Power Supply

2/4

5.0V5.0V
电源
Power Supply

5

3.3V

PWR_SPINOR_SDI / CAM_MCLK4 / PWR_GPIO4 / WG1_D1 / IIC2_SDA

6

3.3V

IIC5_SDA / KEY_ROW2 / TC906_JTAG0_TRST_X / GPIO103 / UART6_TX / SPI3_SDO

7

3.3V

IIC4_SDA / KEY_ROW0 / TC906_JTAG0_TCK / GPIO101 / UART5_TX / SPI3_CS_X

8

3.3V

IIC4_SCL / KEY_ROW1 / TC906_JTAG0_TMS / GPIO102 / UART5_RX / SPI3_SDI

9

3.3V

MIPI_DSI0_N2 / VO0_D19 / CAM_MCLK5 / GPIO179 / CAM_VS2 / I2C7_SCL

10

3.3V

IIC5_SCL / KEY_ROW3 / TC906_JTAG0_SRST_X / GPIO104 / UART6_RX / SPI3_SCK

11

3.3V

MIPI_DSI0_P2 / VO0_D18 / CAM_MCLK4 / GPIO178 / CAM_HS2 / I2C7_SDA

12

3.3V

UART4_RTS / GPIO93 / UART3_RTS / SPI3_SDI / IIC9_SDA / KEY_ROW2

13

3.3V

PWM4 / CAN1_TX / SD2_0_D2 / GPIO79 / UART4_TX / IIC5_SDA / CAM_HS2

14

3.3V

UART4_CTS / GPIO94 / UART3_CTS / SPI3_CS_X / IIC9_SCL / KEY_ROW3

15

3.3V

SD1_CD_X / PWM14 / GPIO61 / CAM_MCLK0 / CAM_HS0

16

3.3V

UART4_RX / SD2_1_CMD / GPIO92 / UART1_CTS / SPI3_SDO / IIC8_SCL / KEY_ROW1

17

3.3V

PWM5 / CAN1_RXD / SD2_0_D3 / GPIO80 / UART4_RX / IIC5_SCL / CAM_VS2

18

3.3V

UART4_TX / SD2_1_CLK / GPIO91 / UART1_RTS / SPI3_SCK / IIC8_SDA / KEY_ROW0

19/20

0V

GND

21

1.8V

PWM2 / KEY_COL2 / SD2_0_D0 / GPIO77 / UART6_TX / SPI1_SDO / IIC4_SDA / CAM_HS1

22

1.8V

AUD0_AINR_MIC / I2S1_SDO / I2S2_SDO

23

1.8V

PWM3 / KEY_COL3 / SD2_0_D1 / GPIO78 / UART6_RX / SPI1_SCK / IIC4_SCL / CAM_VS1

24

1.8V

AUD0_AINL_MIC / I2S1_SDI / I2S2_SDI

25

1.8V

PWM1 / KEY_COL1 / SD2_0_CMD / GPIO76 / UART5_RX / SPI1_SDI / IIC3_SCL / CAM_VS0

26

1.8V

MIPI_CSI_17P / GPIO172 / VI0_D[6] / CAM_MCLK4

27

1.8V

PWR_SPINOR_SDO / CAM_MCLK5 / PWR_GPIO5 / IIC2_SCL

28

1.8V

MIPI_CSI_17N / GPIO173 / VI0_D[7] / CAM_MCLK5

29/30

0V

GND

31

1.8V

CAM_XLR0 / GPIO69

32

1.8V

PWR_GPIO11

33

1.8V

CAM_MCLK0 / GPIO46

34

1.8V

IIC2_SCL / TC906_JTAG0_TDI / GPIO100 / UART3_RX

35

1.8V

CAM_MCLK0 / GPIO46

36

1.8V

MIPI_DSI0_P3 / VO0_D20 / GPIO180 / CAM_HS0 / I2C8_SDA / VO1_D20

37

2.8V

MIPI_DSI0_N4 / VO0_D23 / GPIO183 / CAM_VS1 / I2C9_SCL / VO1_D23

38

3.8V

MIPI_DSI0_N3 / VO0_D21 / GPIO181 / CAM_VS0 / I2C8_SCL / VO1_D21

39/40

0V

GND

21

SATA

接口

Interface

Image Modified

Two SATA 3.0 7P ports. Please format the hard drive before use.

22

SATA

电源

Power Port

Image Modified

Two 2.0MM 4P SATA power connectors.

23,-24

PWR

、

& Reset Buttons

按键

Image Modified

Power button and Reset button.

25

Debug

口

Port

Image Modified

2.0MM 3P interface.

26

4G/5G

模块接口

Module Interface

Image Modified

4G/5G

模块接口

Module Interface

M.2 B-key, supports 2242 and 2250 modules. Communication: USB2.0 + USB3.0. Compatible with Meig SRM821 5G module; other modules require additional debugging.

27

M.2 PCIE

Image Modified

PCIE3.0 x2. Supports SSD and other PCIe modules. Please format the SSD before use.