IEI Integration NANO-9452 v1.12 - Manual (Page 72)

NANO-9452 EPIC Motherboard
Page 54
PIN NO. DESCRIPTION
7 GND
Table 4-18: SATA Drive Connector Pinouts
4.2.17 Serial Port Connector (COM 2)(RS-232, RS-422 or RS-485)
CN Label: COM2
CN Type: 14-pin header (2x7)
CN Location: See Figure 4-19
CN Pinouts: See Table 4-19
The 14-pin serial port connector connects to the COM 2 serial communications channels.
COM 2 is a multi function channel. In default mode COM 2 is an RS-232 serial
communication channel but, with the COM 2 function select jumper, can be configured as
either an RS-422 or RS-485 serial communications channel.
Figure 4-19: RS-232/422/485 Serial Port Connector Location
PIN NO. DESCRIPTION PIN NO. DESCRIPTION
1 DCD 2 NDSR2
3 RXD 4 NRTS2
5 TXD 6 NCTS2
7 DTR 8 NRI2
9 GND 10 GND
11 TXD485+ 12 TXD485#