EMB-3942 COM
来自ARM Wiki
文件:EMB-3942 COM1，COM2，COM3-6.jpg
EMB-3942 COM1，COM2，COM3-6
COM1：
| 信号名称 | Pin | Pin | 信号名称 |
|---|---|---|---|
| HDCD#1 | 1 | 2 | HDSR#1 |
| HSIN1 | 3 | 4 | HRTS#1 |
| HSOUT1 | 5 | 6 | HCTS#1 |
| HDTR#1 | 7 | 8 | HRI#1 |
| GND | 9 | 10 | GND |
COM2：
| 信号名称 | Pin | Pin | 信号名称 |
|---|---|---|---|
| HDCD#2TX-DATA- | 1 | 2 | COM2_DSR# |
| HSIN2TX+DATA+ | 3 | 4 | COM2_RTS# |
| HSOUT2RX+ | 5 | 6 | COM2_CTS# |
| HDTR#2RX | 7 | 8 | COM2_RI |
| GND | 9 | 10 | GND |
COM2 跳线功能设置（J1，J2，J3）：
COM2 RS232 PORT COM2 RS422 PORT COM2 RS485 PORT J1 1-3 2-4 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
COM3-6：
| 信号名称 | Pin | Pin | 信号名称 |
|---|---|---|---|
| HDCD#3 | 1 | 2 | HDSR#3 |
| HSIN3 | 3 | 4 | HRTS#3 |
| HSOUT3 | 5 | 6 | HCTS#3 |
| HDTR#3 | 7 | 8 | HRI#3 |
| GND | 9 | 10 | GND |
| HDCD#4 | 11 | 12 | HDSR#4 |
| HSIN4 | 13 | 14 | HRTS#4 |
| HSOUT4 | 15 | 16 | HCTS#4 |
| HDTR#4 | 17 | 18 | HRI#4 |
| GND | 19 | 20 | GND |
| HDCD#5 | 21 | 22 | HDSR#5 |
| HSIN5 | 23 | 24 | HRTS#5 |
| HSOUT5 | 25 | 26 | HCTS#5 |
| HDTR#5 | 27 | 28 | HRI#5 |
| GND | 29 | 30 | GND |
| HDCD#6 | 31 | 32 | HDSR#6 |
| HSIN6 | 33 | 34 | HRTS#6 |
| HSOUT6 | 35 | 36 | HCTS#6 |
| HDTR#6 | 37 | 38 | HRI#6 |
| GND | 39 | 40 | GND |