P5F111 User’s Manual
19
2.2.1 Setting the CPU Vcore Voltage (SW2)
The P5F111 supports CPU voltages from 2.1V to 3.5V.
2.2.2 Setting the CPU I/O Voltage (JP8)
This jumper allows you to set the CPU I/O
voltages to either 3.45V (default) or 3.3V.
DIP SWITCH (SW2) selects CPU Voltages
CPU Voltage SW2-P1
SW2-P2
SW2-P3
SW2-P4
2.1
OFF
OFF
OFF
ON
2.2
OFF
OFF
ON
OFF
2.3
OFF
OFF
ON
ON
2.4
OFF
ON
OFF
OFF
2.5
OFF
ON
OFF
ON
2.6
OFF
ON
ON
OFF
2.7
OFF
ON
ON
ON
2.8
ON
OFF
OFF
OFF
2.9
ON
OFF
OFF
ON
3.0
ON
OFF
ON
OFF
3.1
ON
OFF
ON
ON
3.2
ON
ON
OFF
OFF
3.3
ON
ON
OFF
ON
3.4
ON
ON
ON
OFF
3.5
ON
ON
ON
ON
Chapter 2:Hardware Installation
D
IM
M
1
D
IM
M
2
DSW2
JP8
JP8
1
1
Set V
I/O
equal to 3.3V
Set V
I/O
equal to 3.45V (default)
JP8
