User`s manual

Jumpers and Connectors 31
JP2: Clear CMOS
The CMOS RAM stores the real time clock (RTC) information,
BIOS configuration, and default BIOS setting. The CMOS is pow-
ered by a button cell battery when the system is powered off.
Please use the following procedure to erase the CMOS RAM data:
1. Remove the SBC from the system
2. Short pins 2 and 3 of JP2, then reinstall the jumper to its
normal default location
3. Insert the SBC back into the chassis.
JP3: PMC VIO Selection
Status JP3
Normal operation (Default)
Clear CMOS
Table 2-4: JP2 Settings
Status JP1
PMC VIO is set to 5V
(Default)
PMC VIO is set to 3.3V
Table 2-5: JP3 Settings
1 2 3
1 2 3
1 2 3
1 2
3