EMB-3680-COM
来自ARM Wiki
文件:EMB-3680 COM1、COM2、COM3、COM4.jpg
EMB-3680 COM1、COM2、COM3、COM4
COM1：
| Pin | 信号名称 |
|---|---|
| 1 | DCD |
| 2 | SIN1 |
| 3 | SOUT1 |
| 4 | DTR |
| 5 | GND |
| 6 | DSR |
| 7 | RTS |
| 8 | CTS |
| 9 | RI |
COM2(RS232/422/485), COM3(RS232), COM4(RS232)（采用2×5 Header接口）：
| Pin | RS232 | RS422 | RS485 |
|---|---|---|---|
| 1 | DCD | TX- | DATA- |
| 2 | DSR | NC | NC |
| 3 | RXD | TX+ | DATA+ |
| 4 | RTS | NC | NC |
| 5 | SOUT | RX+ | NC |
| 6 | CTS | NC | NC |
| 7 | DTR | RX- | NC |
| 8 | RI | NC | NC |
| 9 | GND | GND | GND |
| 10 | GND | GND | GND |
COM2 跳线功能设置（J16、J17、 J18）：
| COM2 RS232 PORT | COM2 RS422 PORT | COM2 RS485 PORT | |||
| J16 | 1-3 2-4 | J4 | 3-5 4-6 | J4 | 3-5 4-6 |
| J17 | 1-3 2-4 | J5 | 3-5 4-6 | J5 | 3-5 4-6 |
| J18 | 1-2 | J6 | 3-4 | J6 | 5-6 7-8 |