User`s manual

FR550
3-3
3.1.5 Processor Voltage Setting (JP4, JP5)
The Pentium P55C, Cyrix 6x86L/M2 and AMD-K6 processors have various voltage choices
depending on the CPU speed and the bin grade. These jumpers provide a way to select the
different types of voltage .
Processor Voltage JP4 JP5
V
CORE
=3.5V
V
I/O
=3.5V
V
CORE
=3.38V
V
I/O
=3.38V
V
CORE
=3.2V
V
I/O
=3.3V
V
CORE
=2.9V
V
I/O
=3.3V
V
CORE
=2.8V
V
I/O
=3.3V
3.1.6 Processor/System Speed setting (JP2, JP3, & JP6)
The system speed depends upon the frequency of the CLOCK GENERATOR which is
determined by jumpers. These jumpers tell the system what speed to run at. Currently, this
mainboard speed range is from 90MHz to 233MHz. The CPU input frequency must match the
frequency of CLOCK GEN or it will cause the system to malfunction. For example, setting a
90MHz CPU to run at 133MHz will cause the system to malfunction.
Intel CPU Settings JP2 JP3 JP6
90MHz
(60MHz x 1.5)