AOpen X59P-TBL User Manual

Appendix C

Jumper Table Summary

Setting the CPU Voltage

CPU Type Vcore S4 S5 S6 S7 S8

INTEL P54C Single Voltage 3.45V OFF ON ON ON OFF
INTEL P55C Dual Voltage 2.8V OFF OFF OFF ON OFF
AMD K5 Single Voltage 3.52V ON ON ON ON OFF
AMD K6-166/200 Dual Voltage 2.9V ON OFF OFF ON OFF
AMD K6-233 Dual Voltage 3.2V OFF OFF ON ON OFF
AMD K6-266/300 Dual Voltage 2.2V OFF ON OFF OFF OFF
AMD K6-2 Dual Voltage 2.2V OFF ON OFF OFF OFF
AMD K6-2 400/450 Dual Voltage 2.4V OFF OFF ON OFF OFF
AMD K6-III Dual Voltage 2.4V OFF OFF ON OFF OFF
Cyrix 6x86 Single Voltage 3.52V ON ON ON ON OFF
Cyrix 6x86L Dual Voltage 2.8V OFF OFF OFF ON OFF
Cyrix M2 Dual Voltage 2.9V ON OFF OFF ON OFF
IDT C6 Single Voltage 3.52V

3.3VONONONOFFONONONON

OFF
OFF

Warning: Make sure that you have installed CPU fan properly if
Intel PP/MT-233 or AMD K6 is being selected to use. It may
cause your system unstable if you can not meet the heat
dissipation requirement from above CPU. It is recommended to
adopt larger fan on these CPU for better air flow in the system.

Tip: Normally, for single voltage CPU, Vcpuio (CPU I/O Voltage)
is equal to Vcore, but for CPU that needs dual voltage such as
PP/MT (P55C) or Cyrix 6x86L, Vcpuio is different from Vcore
and must be set to Vio (PBSRAM and Chipset Voltage). The
single or dual voltage CPU is automatically detected by
hardware circuit.

C-1

Jumper Table Summary

Selecting the CPU Frequency

S1

OFF
ON
ON
OFF
ON
ON
OFF
OFF

CPU CLK

66MHz
68MHz
75MHz
83MHz
95MHz
100MHz
112MHz

S2

OFF
OFF
ON
ON
OFF
ON
ON
OFF

S3

CPU Frequency
Ratio

OFF

1.5x (3.5x)

OFF

2x

OFF

2.5x (1.75x)

OFF

3x

ON

4x

ON

4.5x

5x

ON

5.5x

ON

AGP CLK

66MHz
68MHz
75MHz
56MHz
64MHz
66MHz
75MHz

Note: Intel PP/MT MMX 233MHz is using 1.5x jumper setting for

3.5x frequency ratio, and AMD PR166 is using 2.5x setting for

1.75x frequency ratio.

PCI CLK

33MHz
34MHz
38MHz
28MHz
32MHz
33MHz
37MHz

JP4

1-2
2-3
1-2
2-3
2-3
1-2
1-2

JP5

1-2
2-3
2-3
2-3
1-2
1-2
2-3

JP6

1-2
2-3
1-2
1-2
2-3
2-3
2-3

JP25

1-2
1-2
1-2
2-3
2-3
2-3
2-3

C-2

Warning: VIA MVP3 chipset supports maximum 100MHz external
CPU bus clock, the 112MHz settings are for internal test only, set
to 112MHz exceeds the specification of MVP3 chipset, which
may cause serious system damage.