Kontron AM4220 - Manual (Page 80)

A-2 AM4220
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A.3 Serial Port Pinout
A.4 Serial console terminal cable interface:
RJ45 Female to DB9 Female
Signal Pin
RTS 1
DTR 2
TXD 3
GND 4
GND 5
RXD 6
DSR 7
CTS 8
RJ45 Pin Number Signal Connected Description DB9 Pin Number
1 RTS Y Request To Send 8
2 DTR Y Data Terminal Ready 6
3 TXD Y Transmit 2
4 GND N Ground -
5 GND Y Ground 5
6 RXD Y Receive 3
7 DSR Y Data Set Ready 4
8 CTS N Clear To Send 7
- RI N Ring Indicator (Not Used) 9
- CD N Carrier Detect (Not Used) 1