WSB-H810 PICMG 1.0 CPU Card
Page 40
Pin Description Pin Description
1 DCD 2 DSR
3 RXD 4 RTS
5 TXD 6 CTS
7 DTR 8 RI
9 GND 10 N/C
Table 3-24: Serial Port Connector Pinouts
3.2.23 Serial Port Connector, RS-422/485
CN Label: COM2
CN Type:
4-pin wafer, p=2 mm
CN Location:
See Figure 3-24
CN Pinouts:
See Table 3-25
This connector provides RS-422 or RS-485 communications.
Figure 3-24: RS-422/485 Connector Location
Pin Description
1 RXD422-
2 RXD422+
3 TXD422+/TXD485+
4 TXD422-/TXD485-
Table 3-25: RS-422/485 Connector Pinouts
Use the optional RS-422/485 cable to connect to a serial device. The pinouts of the DB-9
connector are listed below.