SBC81206 PICMG1.0
SBC User’s Manual
Board and Pin Assignments
7
2.3
Jumper Settings
Proper jumper settings configure the
SBC81206
to meet your application purpose. We are
herewith listing a summary table of all jumpers and default settings for onboard devices,
respectively.
Jumper
Default
Setting
JP1
COM2 Mode Select
COM2 Pin 1: DCD
Short 3-5
Short 4-6
COM2 Pin 8: RI
JP2
COM2 Mode Select
COM2 Pin 1: DCD
Short 3-5
Short 4-6
COM2 Pin 8: RI
JP3
COM2 Mode Select : RS-232
Short 1-2
JP6
ATX Auto Power On/Off : Disable
Short 1-2
JP7
Clear CMOS Setting : Normal
Short 1-2
2.3.1
COM2 Mode Select Jumpers (JP1, JP2, JP3)
These jumpers select the COM2 port
’s communication mode to operate RS-232 or
RS-422/485.
Description
Function
Jumper Setting
COM2 Mode Select
RS-232
(Default)
JP1
JP2
JP3
RS-422
JP1
JP2
JP3
RS-485
JP1
JP2
JP3