COMMELL LE-375 - Manual (Page 30)

LE-375 User’s Manual
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2.13 <Serial Port Jumper Setting >
The board provides two RS232 serial ports, with jumper selectable RS422/485/IrDA for
COM2.
Connector: CN_COM2
Type: 10-pin (5 x 2) 1.27mm x 2.54mm-pitch header for COM2
Pin Description Pin Description
1 DCD/422TX-/485- 2 RXD/422TX+/485+
3 TXD/422RX+ 4 DTR/422RX-
5 GND 6 DSR
7 RTS 8 CTS
9 RI 10 N/C
Jumper: JCSEL1,JCSEL2
Type: 12-pin (6 x 2) & 8-pin (4 x 2) for set COM2 mode jumper
RS232 RS485 RS422 IrDA
JCSEL1
JCSEL2
Default: RS232
JCSEL2 JCSEL1
9 1
10 2
CN_COM2