AXIOMTEK SHB100, User Manual

Page: 14 / 68

SHB100
LGA775 SBC User’s Manual
8 Board and Pin Assignments
2.3.1 COM2 Mode Select Jumpers ( JP2, JP3, JP4)
These jumpers select the COM2 port
’s communication mode to operate RS-232 or
RS-422/485.
Description Function Jumper Setting
COM2 RS-232
(Default)
JP2
1
3
5
7
2
4
6
8
JP3
1
3
5 2
4
6
JP4
1
3
5 2
4
6
RS-422
JP2
1
3
5
7
2
4
6
8
JP3
1
3
5 2
4
6
JP4
1
3
5 2
4
6
RS-485
JP2
1
3
5
7
2
4
6
8
JP3
1
3
5 2
4
6
JP4
1
3
5 2
4
6
2.3.2 CompactFlash Jumper (JP5)
Description Function Jumper Setting
CompactFlash Master
(Default)
3 2 1
Slave
3 2 1
2.3.3 CompactFlash Voltage Jumper (JP6)
Description Function Jumper Setting
CompactFlash
Voltage
3.3V
(Default)
3 2 1
5V
3 2 1