12 <serial port jumper setting – COMMELL LE-376 User Manual
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LE-376 User’s Manual
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2.12 <Serial Port Jumper Setting >
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