Chapter 2 Hardware Configuration
2-4. COM PORT CONNECTOR
COM1 : COM1 Connector
COM1 is fixed as
The pin assignment is as follows :
PIN | ASSIGNMENT |
1 | COM1_DCD# |
2 | COM1_RX |
3 | COM1_TX |
4 | COM1_DTR# |
5 | GND |
6 | COM1_DSR# |
7 | COM1_RTS# |
8 | COM1_CTS# |
9 | COM1_RI# |
COM2 : COM2 Connector
The COM2 is selectable as
The pin assignment is as follows :
PIN | ASSIGNMENT |
| ||
|
|
| ||
| ||||
1 | COM2_DCD# | TX- | TX- | |
2 | COM2_RX | TX+ | TX+ | |
3 | COM2_TX | RX+ | RX+ | |
4 | COM2_DTR# | RX- | RX- | |
5 | GND | GND | GND | |
6 | COM2_DSR# | RTS- | GND | |
7 | COM2_RTS# | RTS+ | GND | |
8 | COM2_CTS# | CTS+ | GND | |
9 | COM2_RI# | CTS- | GND | |
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