VIA SOM-6X80 User Manual
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A.3.6. GPIO Pin Header
The SOMBD3 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.3.7. SPI Pin Header
The SOMBD3 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
Figure 20: GPIO pin header diagram
Pin
Signal
Pin
Signal
1 SUS_GPIO0
2 VCC33
3 SUS_GPIO1
4 GPIO4
5 GPIO0
6 GPIO5
7 GPIO1
8 GPIO6
9 GPIO2
10 GPIO7
11 GPIO3
12 GPIO8
Figure 21: SPI 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