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Jumper Settings for
5DTX
CPU Speed Selection
JP5 and JP6 for external bus
frequency
JP10 for frequency ration
setting
INTEL
PENTIUM CPU
Internal
CPU
Speed
MHz |
External
Bus
Speed
MHz |
JP5 |
JP6 |
Frequency
Ratio |
JP10 |
| 90 |
60 |
[1-3],[4-6] |
[2-3] |
1.5x |
[1-3],[2-4] |
| 100 |
66 |
[3-5],[2-4] |
[2-3] |
1.5x |
[1-3],[2-4] |
| 120 |
60 |
[1-3],[4-6] |
[2-3] |
2x |
[1-3],[4-6] |
| 133 |
66 |
[3-5],[2-4] |
[2-3] |
2x |
[1-3],[4-6] |
| 150 |
60 |
[1-3],[4-6] |
[2-3] |
2.5x |
[3-5],[4-6] |
| 166 |
66 |
[3-5],[2-4] |
[2-3] |
2.5x |
[3-5],[4-6] |
| 180 |
60 |
[1-3],[4-6] |
[2-3] |
3x |
[3-5],[2-4] |
| 200 |
66 |
[3-5],[2-4] |
[2-3] |
3x |
[3-5],[2-4] |
| 233 |
66 |
[3-5],[2-4] |
[2-3] |
3.5x |
[1-3],[2-4] |
CYRIX
/ IBM 6X86 CPU
Internal
CPU
Speed
MHz |
External
Bus
Speed
MHz |
JP5 |
JP6 |
Frequency
Ratio |
JP10 |
| PR133 |
55 |
[3-5],[4-6] |
[1-2] |
2x |
[1-3],[4-6] |
| PR166 |
66 |
[3-5],[2-4] |
[2-3] |
2x |
[1-3],[4-6] |
| PR200 |
75 |
[1-3],[4-6] |
[1-2] |
2x |
[1-3],[4-6] |
AMD
K5 CPU
Internal
CPU
Speed
MHz |
External
Bus
Speed
MHz |
JP5 |
JP6 |
Frequency
Ratio |
JP10 |
| PR90 |
60 |
[1-3],[4-6] |
[2-3] |
1.5x |
[1-3],[2-4] |
| PR100 |
66 |
[3-5],[2-4] |
[2-3] |
1.5x |
[1-3],[2-4] |
| PR133 |
66 |
[3-5],[2-4] |
[2-3] |
1.5x |
[1-3],[2-4] |
| PR150 |
60 |
[1-3],[4-6] |
[2-3] |
1.75x |
[3-5],[4-6] |
| PR166 |
66 |
[3-5],[2-4] |
[2-3] |
1.75x |
[3-5],[4-6] |
AMD
K6 CPU
Internal
CPU
Speed
MHz |
External
Bus
Speed
MHz |
JP5 |
JP6 |
Frequency
Ratio |
JP10 |
| PR166 |
66 |
[3-5],[2-4] |
[2-3] |
2.5x |
[3-5],[4-6] |
| PR200 |
66 |
[3-5],[2-4] |
[2-3] |
3x |
[3-5],[2-4] |
| PR233 |
66 |
[3-5],[2-4] |
[2-3] |
3.5x |
[1-3],[2-4] |
CPU Voltage
Selection
JP16
for CPU I/O and chipset voltage selection
JP15 for CPU core voltage selection
JP9 for MMX CPU split power plan
Please check your CPU voltage requirements before doing the below
jumper settings.
| CPU Type |
JP9 |
Intel Pentium
Cyrix/IBM 6x86
AMD K5 |
[1-2],[3-4],[5-6],[7-8] |
Intel MMX Pentium
Cyrix/IBM 6x86L
AMD K6 |
Fully open |
CPU
I/O Voltage Selection
| JP16 |
I/O Voltage |
| 1-2 |
3.3V |
| 3-4 |
3.52V |
CPU Core Voltage
Selection
| JP15 |
Core Voltage |
| 1-6 |
2.8V |
| 2-7 |
2.9V |
| 3-8 |
3.2V |
| 4-9 |
3.3V |
| 5-10 |
3.5V |
CAUTION:
For MMX or other split power plane
CPU, JP9 muse be fully opened before turning on the system power.
Failure to do so may cause damages to your CPU.
CMOS Reset
JP8 is used to clear the content of CMOS. After reset, all system
BIOS configuration will be lost.
| Description |
JP8 |
| CMOS Clear |
[1-2] |
| Normal operation |
[2-3] (default) |
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