MITX-6553 COM
来自ARM Wiki
PWR：
信号名称 Pin Pin 信号名称 COM1_DCD_N 1 2 COM1_DSR_N COM1_RXD 3 4 COM1_RTS_N COM1_TXD 5 6 COM1_CTS_N COM1_DTR_N 7 8 COM1_RT_N GND 9 10 GND NC 11 12 NC COM2_RXD 13 14 NC COM2_TXD 15 16 NC NC 17 18 NC GND 19 20 GND COM3_B 21 22 NC COM3_RXD 23 24 NC COM3_TXD 25 26 NC NC 27 28 NC GND 29 30 GND COM4_B 31 32 NC COM4_RXD 33 34 NC COM4_TXD 35 36 NC NC 37 38 NC GND 39 40 GND