30 | APPENDIX A: SPECIFICATIONS
Pin Assignments
Pin # Direction Function
1
IN
DCD — Carrier detect
2
IN
RXD serial data from local host
3
OUT
TXD serial data to local host
4
OUT
DTR Data terminal ready
5
Ground
6
IN
DSR Data set ready
7
OUT
RTS Request to send to local host
8
IN
CTS Clear to send from local host
9
Optional power input (3.3 to 5.0 Vdc)