60
9-Pin Serial Port (J2) Pin Assignment
25-Pin Serial Port (J3) Pin Assignment
1 1 DCD, Data Carrier Detect
2 6 DSR, Data Set Ready
3 2 RXD, Receive Data
4 7 RTS, Request to Send
5 3 TXD, Transmit Data
6 8 CTS, Clear To Send
7 4 DTR, Data Terminal Ready
8 9 RI, Ring Indicator
9 5 GND, Ground
1 8 DCD, Data Carrier Detect
2 3 RXD, Receive Data
3 2 TXD, Transmit Data
4 20 DTR, Data Terminal Ready
5 7 GND, Ground
6 6 DSR, Data Set Ready
7 4 RTS, Request to Send
8 5 CTS, Clear to Send
9 22 RI, Ring Indicator
Signal
Signal
DB25 Connector
Pin Number
DB9 Connector
Pin Number
Header Pin
Number
Header Pin
Number
Chapter 5 - Mainboard Specifications
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