USB-2COM-BB Dual RS-232/USB/Micro SD Cape for BeagleBone Black & BeagleBone
7
Serial port (DB9 Male connector) pin-out
Pin Number
Name
Description
Pin1
DCD
Input : Data Carrier Detect
Pin2
RxD
Input : Receive Data
Pin3
TxD
Output : Transmit Data
Pin4
DTR
Output : Data Terminal Ready
Pin5
GND
Ground : Signal Ground
Pin6
DSR
Input : Data Set Ready
Pin7
RTS
Output : Request To Send
Pin8
CTS
Input : Clear To Send
Pin9
RI
Input : Ring Indicator