BPC-7975 COM
来自ARM Wiki
文件:BPC-7975 COM1，COM2.jpg
BPC-7975 COM1，COM2
COM：
| Pin | 信号名称 |
|---|---|
| 1 | HDCD#TX-DATA- |
| 2 | HSINTX+DATA+ |
| 3 | HSOUTRX+ |
| 4 | HDTR#RX |
| 5 | GND |
| 6 | COM_DSR# |
| 7 | COM_RTS# |
| 8 | COM_CTS# |
| 9 | COM_RI_L |
COM1 跳线功能设置（J1，J2，J3）：
| COM1 RS232 PORT | COM1 RS422 PORT | COM1 RS485 PORT | |||
| J1 | 1-3 2-4 | J1 | 3-5 4-6 | J1 | 3-5 4-6 |
| J2 | 1-3 2-4 | J2 | 3-5 4-6 | J2 | 3-5 4-6 |
| J3 | 1-2 | J3 | 3-4 | J3 | 5-6 7-8 |
COM2 跳线功能设置（J4，J5，J6）：
| COM2 RS232 PORT | COM2 RS422 PORT | COM2 RS485 PORT | |||
| J4 | 1-3 2-4 | J4 | 3-5 4-6 | J4 | 3-5 4-6 |
| J5 | 1-3 2-4 | J5 | 3-5 4-6 | J5 | 3-5 4-6 |
| J6 | 1-2 | J6 | 3-4 | J6 | 5-6 7-8 |