COMMELL LE-376 - Manual (Page 28)

LE-376 User’s Manual
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2.12
The board provides two RS232 serial ports, with jumper selectable RS422/485/IrDA for
COM2.
1 5
9 6
Connector: CN_COM1
Type: 9-pin D-sub male connector
Pin Description Pin Description
1 MDCD1- 6 MDSR1-
2 MSIN1- 7 MRTS1-
3 MSO1- 8 MCTS1-
4 MDTR1- 9 MRI1-
5 Ground
9 1
10 2
Connector: CN_COM2
Type: 9-pin header connector (pitch = 2.54x1.27 mm)
Pin Description Pin Description
1 DCDBTXC- 2 SINBTXC
3 SOUTBRXC 4 DTRBRXC-
5 Ground 6 MDSR2-
7 MRTS2- 8 MCTS2-
9 MRI2-
Connector: CN_COM3/4
Type: 20-pin (10 x 2) 1.27mm x 2.54mm-pitch header for COM3/4
Pin Description Pin Description
1 HS_DCD1- 2 HS_RXD1
3 HS_TXD1 4 HS_DTR1-
5 GND 6 HS_DSR1-
7 HS_RTS1- 8 HS_CTS1-
9 COM39 10 NC
11 HS_DCD2- 12 HS_RXD2
13 HS_TXD2 14 HS_DTR2-
15 GND 16 HS_DSR2-
17 HS_RTS2- 18 HS_CTS2-
19 COM49 20 NC