Appendix A: Product Specifi cations and Pinouts
9-pin serial port pinouts
Pin #
Description
1
Data Carrier Detect (DCD) Input
2
Receive Data (RCD) Input
3
Transmit Data (TXD) Output
4
Data Terminal Ready (DTR) Output
5
Ground (GND)
6
Data Set Ready (DSR) Input
7
Request To Send (RTS) Output
8
Clear To Send (CTS) Input
9
Ring Indicator (RI) Input
23