AMD MINI-ITX LV-651 - Manual (Page 30)

LV-651 User’s Manual Hardware Setup
Serial Port Jumper Setting 30
2.13 <Serial Port Jumper Setting >
The onboard CN_COM1 RS232 serial port, with jumper selectable RS232/422/485 for
CN_COM2
Connector: COM1/2
Type: 9-pin D-sub male connector on I/O Panel
Pin Description Pin Description
1 DCD/422RX-/485- 6 RXD/422RX+/485+
2 TXD/422TX+
7 DTR/422TX-
3 GND 8 DSR
4 RTS 9 CTS
5 R1
CN_COM1/2
JCSEL1
10
2 1
9
JCSEL1
JCSEL2