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Appendix A: Connections
A.1. Serial Port Pin Outs
Parani-SD is a DCE device compatible with RS232 standard, having DB9 female interface.
Figure A-1 Pin layout of the DB-9 female connector
Table A-1. Pin assignment of the DB-9 female connector
Pin #
Signal
Direction
Description
1
CD
Output
Received Line Signal Detect
2
TxD Output
Transmitted
Data
3
RxD Input
Received
Data
4
DSR Input
DTE
Ready
5
GND -
Signal
Ground
6
DTR Output
DCE
Ready
7
CTS
Input
Clear to Send
8
RTS
Output
Request to Send
9
Vcc Input
Ring
Indicator
A.2. Serial Wiring Diagram
