Chapter 2: Mechanical Specifications
2.3 I/O Interface Descriptions
2.3.13 COM Port
COM4
Pin
1
3
5
7
9
Signal
CM4_DCD
CM4_RXD
CM4_TXD
CM4_DTR
GND
SIO-W221-8365UE
9
7
5
3
1
Pin
2
4
6
8
10
l User's Manual
8
6
4
2
Signal
CM4_DSR
CM4_RTS
CM4_CTS
CM4_RI
NC
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