SOM-9X20 User Manual
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A.3.13. COM Connector
The SOMBD2 carrier board is equipped with a COM connector that supports TX/RX for debugging. The pinouts
of the COM connector are shown below.
Table 10: COM connector pinouts
A.3.14. GPIO Connector
The SOMBD2 carrier board provides a GPIO connector labeled as “DIO1”. The digital inputs and outputs can be
programmed to read or control devices, with input or output defined. The GPIO pin header supports up to 8
GPI and 8 GPO signals. The pinouts of the GPIO connector are shown below.
Table 11: GPIO connector pinouts
Pin
Signal
1
RS232_TXD
2
RS232_RXD
3
GND
4
N/A
5
N/A
Pin
Signal
1
VREG_S4A_1P8
2
PM8996_GPI06
3
N/A
4 N/A
5
N/A
6
HRM_INT
7
CAP_INT_N
8
HALL_INT_N
9
SSC_IRQ_5_INT
10 SSC_IRO_6_INT
11 ACCEL_INT
12 GYRO_INT
13 MAG_DRDY_INT
14 GPIO_129_WAKEUP
15 GND
1 2 3 4
ON DIP
1
COM
1
Figure 26: COM connector diagram
1 2 3 4
ON DIP
1
DIO1
1
Figure 27: GPIO connector diagram
