UMAC-CPCI Turbo CPU Board Hardware Reference Manual
14 Jumper Descriptions

W1: Flash IC Power Supply Select Jumper

E Point &
Physical Layout Location Description Default
B-1 (Note: This jumper is set at the factory and possibly hard soldered.
Users should not change this jumper.)
Jump pin 1 to 2 to select 3.3V supply for flash memory IC in U10.
Jump pin 2 to 3 to select 5V supply for flash memory IC in U10.
Setting
dependent on
flash IC used.