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目录

项目

内容

产品编号

S1A-BM1688

版本号

V1.0

发布日期

2026-04-14

生效日期

2026-04-14

文件状态

编修

文件拟定

王志海

文件审核


 

保密类型

公开


 

版本

发布日期

升级记录

V1.0

2026-04-14

第一次发布







一、接口示意图



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Image Modified


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二、端口描述

序号

名称

附图

规格及使用方法

1

DC电源输入

Image Modified

DC 12V 3A电源输入,请使用配套电源。

DC口规格:5.5-2.1MM

2

HDMI 输入

Image Modified

HDMI 输入,最高支持4K 60HZ

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

目前Demo只支持4K60,需要其他分辨率需调整固件

3

Recovery按键

Image Modified

Recovery按键,USB升级时使用

4

HDMI 输出

Image Modified

HDMI 输出,最高支持4K 60HZ

 

5-6

以太网

Image Modified

1000M x2

EHT1 为固定IP;EHT0 为动态IP

7-8-9

USB

Image Modified

USB1 USB3.0 OTG 口,可以作为固件升级(建议TF卡升级);

USB2USB3USB3.0 HOST口。

10

串口、GPIO

Image Modified

RS485 ttyS1  最高波特率 115200bps

RS232 ttyS3最高波特率 115200bps

可以使用我们配套的uart 脚本进行测试

12V 电源输出,最大负载为1A,引线长度不应超过1M

GPIO-IN

输入低电平或者悬空时,CPU读取为“1”;

输入高电平时(3.3-12V),CPU读取为“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输出“1”时,端口输出为“3.3V”;

CPU输出“0”时,端口输出为 “0V

GPIO输出是带3.3V@10K上拉的漏极输出器,

可以控制 5V-12V的设备。(需要外接上拉)

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

4G5G 网络 SIM卡位,为Nano卡。

12

调试口

Image Modified

调试口,内置USBUart芯片CH341,波特率115200bps

驱动下载:

https://www.wch.cn/products/CH340

13

TF

Image Modified

可用于升级固件;支持数据存储。

14-15

 

Image Modified

指示灯

16

电源端口

Image Modified

12V电源输入口,与DC座并联输入

2.0MM 4P

17

风扇接口1

Image Modified

风扇接口,带PWM,默认为12V风扇。

1.25MM 3P

18

风扇接口2

Image Modified

风扇接口,带PWM,默认为12V风扇。

1.25MM 4P

19

风扇电源切换电感

Image Modified

用于切换风扇的电源电压

20

GPIO

Image Modified

Pin

电平

功能

1/3

3.3V

3.3V电源

2/4

5.0V

5.0V 电源

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

Image Modified

两路SATA 3.0 7P

使用SATA硬盘时,请先格式化硬盘

22

SATA 电源

Image Modified

两路2.0MM 4P SATA电源

23,-24

PWR



Reset

按键

Image Modified

PWRReset按键

25

Debug

Image Modified

内部Debug 调试口

2.0MM 3P

26

4G/5G 模块接口

Image Modified

4G/5G 模块接口

M.2 B-key 支持22422250模组

USB2.0+USB3.0 通讯方式

支持 美格 SRM821 5G 模组(其他模组需调试)

27

M.2 PCIE

Image Modified

M.2 M-Key 2280 PCIE3.0x2

支持SSD或其他PCIE 模组

使用SSD时,请先格式化SSD

Sv translation
languageen

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



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2. Port Description

No. 

Name 

Illustration

Specifications & Operation

1

DC Power Input

Image Added

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

2

HDMI Input 

Image Added

HDMI 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 Key

Image Added

For USB firmware upgrade.

4

 HDMI Output

Image Added

Supports up to 4K 60HZ.

 

5-6

Ethernet 

Image Added

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

7-8-9

USB Ports

Image Added

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

10

 UART & GPIO Ports 

Image Added

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 Added

Nano-SIM slot for 4G and 5G networks.

12

Debug Port

Image Added

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

13

TF Card Slot

Image Added

Available for firmware upgrade and data storage.

14-15

 

Image Added

Indicator Lights

16

Power Port

Image Added

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

17

Fan Interface 1

Image Added

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

18

Fan Interface 2

Image Added

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

19

Fan Power Switch Inductor

Image Added

Used to switch power supply voltage for fans.

20

GPIO Port

Image Added

Pin

LevelFunction

1/3

3.3V3.3V Power Supply

2/4

5.0V5.0V 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 Interface

Image Added

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

22

SATA Power Port

Image Added

Two 2.0MM 4P SATA power connectors.

23,-24

PWR & Reset Buttons

Image Added

Power button and Reset button.

25

Debug Port

Image Added

2.0MM 3P interface.

26

4G/5G Module Interface

Image Added

4G/5G 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 Added

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