COM1-2A：
| Pin |
信号名称
|
| 1 |
COM1_DCD
|
| 2 |
COM1_RXD
|
| 3 |
COM1_TXD
|
| 4 |
COM1_DTR
|
| 5 |
GND
|
| 6 |
COM1_DSR
|
| 7 |
COM1_RTS
|
| 8 |
COM1_CTS
|
| 9 |
COM1_RI
|
COM1 - 2B（Debug）：
| Pin |
信号名称
|
| 1 |
NC
|
| 2 |
COM2_RXD
|
| 3 |
COM2_TXD
|
| 4 |
NC
|
| 5 |
GND
|
| 6 |
NC
|
| 7 |
NC
|
| 8 |
NC
|
| 9 |
NC
|
COM3-4A：
| Pin |
信号名称
|
| 1 |
COM3_B
|
| 2 |
COM3_RXD/A
|
| 3 |
COM3_TXD
|
| 4 |
NC
|
| 5 |
GND
|
| 6 |
NC
|
| 7 |
NC
|
| 8 |
NC
|
| 9 |
NC
|
COM3-4B：
| Pin |
信号名称
|
| 1 |
COM4_B
|
| 2 |
COM4_RXD/A
|
| 3 |
COM4_TXD
|
| 4 |
NC
|
| 5 |
GND
|
| 6 |
NC
|
| 7 |
NC
|
| 8 |
NC
|
| 9 |
NC
|
JCOM1-4：
JCOM1_TX || 5 || 6 || JCOM1_CTS
| 信号名称 |
Pin |
Pin |
信号名称
|
| NC |
1 |
2 |
NC
|
| JCOM1_RX |
3 |
4 |
COM1_RTS
|
| NC |
7 |
8 |
NC
|
| GND |
9 |
10 |
GND
|
| NC |
11 |
12 |
NC
|
| JCOM2_RX |
13 14 |
JCOM2_RTS
|
| JCOM2_TX |
15 |
6 |
JCOM2_CTS
|
| NC |
17 |
18 |
NC
|
| GND |
19 |
20 |
GND
|
| NC |
21 |
22 |
NC
|
| JCOM3_RX |
23 |
24 |
JCOM3_RTS
|
| JCOM3_TX |
25 |
26 |
JCOM3_CTS
|
| NC |
27 |
28 |
NC
|
| GND |
29 |
30 |
GND
|
| NC |
31 |
32 |
NC
|
| JCOM4_RX |
33 |
34 |
JCOM4_RTS
|
| JCOM4_TX |
35 |
36 |
JCOM4_CTS
|
| NC |
37 |
38 |
NC
|
| GND |
39 |
40 |
GND
|
