SOM-6X50 User Manual
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A.2.1.6. GPIO Pin header
The SOMBD1 carrier board comes with a GPIO pin header labeled as “J20” which supports up to 9 GPI and 9
GPO signals. The 9 inputs and 9 outputs signals can be programmed to read or control devices, with input or
output defined. The pinouts of the GPIO pin header are shown below.
Table 8: GPIO pin header pinouts
A.2.1.7. SPI Pin Header
The SOMBD1 carrier board comes with an SPI pin header labeled as “J17” which is used to connect the SPI BIOS
programming fixture. The pinouts of the SPI pin header are shown below.
Table 9: SPI pin header pinouts
Pin
Signal
Pin Signal
1
SUS_GPIO0
2 VCC33
3
SUS_GPIO1
4 GPIO5
5
GPIO0
6 GPIO6
7
GPIO1
8 GPIO7
9
GPIO3
10 GPIO8
11 GPIO4
12 GPIO9
SOMDB1
VTS8666C
1
J20
1
Figure 19: GPIO pin header diagram
Pin
Signal
Pin
Signal
1
VCC33
2 VCC33
3
SPI0CLK
4 SPI1CLK
5
SPI0MOSI
6 SPI1MOSI
7
SPI0MISO
8 SPI1MISO
9
SPI0SS0-
10 SPI1SS0-
11 GND
12 GND
SOMDB1
VTS8666C
1
J17
1
Figure 20: SPI pin header diagram
