IEI Integration PCIE-Q670 v1.03 - Manual (Page 50)

PCIE-Q670 PICMG 1.3 CPU Card
Page 35
Each of these connectors provides RS-232 connections.
Figure 3-18: Serial Port Connector Location
Pin Description Pin Description
1 Data Carrier Direct (DCD) 2 Receive Data (RXD)
3 Transmit Data (TXD) 4 Data Terminal Ready (DTR)
5 Ground (GND) 6 Data Set Ready (DSR)
7 Request To Send (RTS) 8 Clear To Send (CTS)
9 Ring Indicator (RI) 10 N/C
Table 3-18: Serial Port Connector Pinouts
3.2.18 Serial Port Connector, RS-422/485
CN Label: COM4
CN Type: 4-pin wafer
CN Location: See Figure 3-19
CN Pinouts: See Table 3-19
NOTE:
These pins are shared with those on the main serial port. Use either
the pins on the main connector, or on this connector, but not both.