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2.3.10. Connection Header for Additional COM Port
This header provides one external COM2 port connection.
Pin
Definition Pin
Definition
1
DCD (Data Carrier
Detect)
2
RXD (Receive-Data)
3
TXD (Transfer-Data)
4
DTR (Data-Terminal-
Ready)
5
GND 6
DSR
(Data-Set-Ready)
7
RTS (Request-to-
Send)
8
CTS (Clear-to-Send)
9
RI (Ring-Indicator)
10
VCC (+5V)