Eurotech Apollo User Manual page 47

J22A and J22B – COM3 and 4 RS232 serial ports
20 way, 2.54mm (0.1") x 2.54mm (0.1") boxed header.
Mating connector:
Pin (20-way
header)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
Issue G
FCI 71600-020.
Signal name
Data Carrier Detect (DCD) COM3
Data Set Ready (DSR) COM3
Receive Data (RX) COM3
Request To Send (RTS) COM3
Transmit Data (TX) COM3
Clear To Send (CTS) COM3
Data Terminal Ready (DTR) COM3
Ring Indicator (RI) COM3
Ground COM3
No Connect
Data Carrier Detect (DCD) COM4
Data Set Ready (DSR) COM4
Receive Data (RX) COM4
Request To Send (RTS) COM4
Transmit Data (TX) COM4
Clear To Send (CTS) COM4
Data Terminal Ready (DTR) COM4
Ring Indicator (RI) COM4
Ground COM4
No Connect
Jumpers and connectors
Pin (9-way
D-type plug)
1
1
6
2
7
3
8
19
4
9
5
-
1
6
2
7
3
8
4
9
5
-
2
20
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