IEI Integration NANO-QM770 - Manual (Page 43)

NANO-QM770 EPIC SBC
Page 28
3.2.12 RS-232 Serial Port Connectors (COM1, COM2)
CN Label: COM1, COM2
CN Type: 10-pin header
CN Location: See Figure 3-14
CN Pinouts: See Table 3-14
The 10-pin serial port connectors provide two RS-232 serial communications channels.
The COM serial port connectors can be connected to external RS-232 serial port devices.
Figure 3-14: RS-232 Serial Port Connector Locations
Pin Description Pin Description
1 -NDCD2 6 -NCTS2
2 -NDSR2 7 -NDTR2
3 NSIN2 8 -XRI2
4 -NRTS2 9 GND
5 NSOUT2 10 GND
Table 3-14: Serial Port Connector Pinouts
3.2.13 RS-422/485 Serial Port Connector (COM3)
CN Label: COM3
CN Type: 4-pin wafer
CN Location: See Figure 3-15