COMMELL LE-379 - Manual (Page 30)

LE-379 User’s Manual
- 29 -
2.12
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 MDSR2-
7 MRTS2- 8 MCTS2-
9 MRI2- 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
JCSEL1
1 9
2 10
CN_COM2
1 11
2 12
JCSEL2
1 7
2 8
1 19
2 20
Left : COM 3/4
Right : COM 5/6
Right : JP1
Left : JP2
2 6
1 5