查看“MITX-6553 COM”的源代码


===== COM1_4： =====
:{| class="wikitable"
|-
! 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
|-
|}
===== JCOM1_4： =====
:{| class="wikitable"
|-
! 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
|-
|}