AOpen P5TC-TBL User Manual

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Appendix C

Jumper Table Summary

Setting the CPU Voltage

S4

S5

S6

S7

S8

CPU Core Voltage

ON

ON

ON

ON

OFF

3.52V (Cyrix 6x86 or AMD K5)

OFF

ON

ON

ON

OFF

3.45V (Intel P54C or IDT C6)

OFF

OFF

ON

ON

OFF

3.2V

(AMD K6-233)

ON

OFF

OFF

ON

OFF

2.9V

(K6-166/200 or M2)

OFF

OFF

OFF

ON

OFF

2.8V

(Intel P55C)

OFF

ON

OFF

OFF

OFF

2.2V

(AMD K6-266/300)

OFF

ON

OFF

ON

ON

1.8V

(For future use)

 

 

 

 

 

 

 

JP12 I/O Voltage (Vio)

1-2 3.45V (default)

3-4 3.52V

Warning: Please make sure that you have installed CPU fan properly if Intel PP/MT-233 or AMD K6-200/233 is being selected to use. It may cause your system unstable if you can not meet the heat dissipation requirement from above CPU type. 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.

CPU

Type

S4

S5

S6

S7

S8

Vcore

C-1

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