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