MITX-6986-COM
来自ARM Wiki
COM1 RS232:
Pin 信号名称 1 DCD 2 RXD 3 TXD 4 DTR 5 GND 6 DSR 7 RTS 8 CTS 9 RI
- COM2 跳线功能设置(J1,J2):
COM2 RS232(默认) RS485 J1 1-3 2-4 3-5 4-6 J2 1-2 3-4 5-6
当COM2设置为RS232/RS485时,其管脚定义如下:
Pin RS232(默认) RS485 1 DCD DATA- 2 RXD DATA+ 3 TXD NC 4 DTR NC 5 GND GND 6 DSR NC 7 RTS NC 8 CTS NC 9 RI NC