Jumper Settings for 5STX


CPU Speed Selection

FOR INTEL PENTIUM CPU

Internal
CPU
Speed
(MHz)

External
Bus
Speed
(MHz)

JP4

JP5

Frequency
Ratio

JP11

JP12

75

50

[3-5],[4-6]

[2-3]

2.5x

[3-5],[4-6]

[1-2]

90

60

[1-3],[4-6]

[2-3]

1.5x

[1-3],[2-4]

[1-2]

100

66

[3-5],[2-4]

[2-3]

1.5x

[1-3],[2-4]

[1-2]

120

60

[1-3],[4-6]

[2-3]

2x

[1-3],[4-6]

[1-2]

133

66

[3-5],[2-4]

[2-3]

2x

[1-3],[4-6]

[1-2]

150

60

[1-3],[4-6]

[2-3]

2.5x

[3-5],[4-6]

[1-2]

166

66

[3-5],[2-4]

[2-3]

2.5x

[3-5],[4-6]

[1-2]

200

66

[3-5],[2-4]

[2-3]

3x

[3-5],[2-4]

[1-2]

233

66

[3-5],[2-4]

[2-3]

3.5x

[1-3],[2-4]

[1-2]


FOR CYRIX / IBM 6X86 CPU

Internal
CPU
Speed
(MHz)

External
Bus
Speed
(MHz)

JP4

JP5

Frequency
Ratio

JP11

JP12

PR133

55

[3-5],[4-6]

[1-2]

2x

[1-3],[4-6]

[1-2]

PR166

66

[3-5],[2-4]

[2-3]

2x

[1-3],[4-6]

[1-2]

PR200

75

[1-3],[4-6]

[1-2]

2x

[1-3],[4-6]

[1-2]

PR233

66

[3-5],[2-4]

[2-3]

3x

[3-5],[2-4]

[1-2]

PR233

75

[1-3],[4-6]

[1-2]

2.5x

[3-5],[4-6]

[1-2]


FOR AMD K5 CPU

Internal
CPU
Speed
(MHz)

External
Bus
Speed
(MHz)

JP4

JP5

Frequency
Ratio

JP11

JP12

PR90

60

[1-3],[4-6]

[2-3]

1.5x

[1-3],[2-4]

[1-2]

PR100

66

[3-5],[2-4]

[2-3]

1.5x

[1-3],[2-4]

[1-2]

PR133

66

[3-5],[2-4]

[2-3]

1.5x

[1-3],[2-4]

[1-2]

PR150

60

[1-3],[4-6]

[2-3]

1.75x

[3-5],[4-6]

[1-2]

PR166

66

[3-5],[2-4]

[2-3]

1.75x

[3-5],[4-6]

[1-2]


FOR AMD K6 CPU

Internal
CPU
Speed
(MHz)

External
Bus
Speed
(MHz)

JP4

JP5

Frequency
Ratio

JP11

JP12

PR166

66

[3-5],[2-4]

[2-3]

2.5x

[3-5],[4-6]

[1-2]

PR200

66

[3-5],[2-4]

[2-3]

3x

[3-5],[2-4]

[1-2]

PR233

66

[3-5],[2-4]

[2-3]

3.5x

[1-3],[2-4]

[1-2]

PR266

66

[3-5],[2-4]

[2-3]

4.0x

[1-3],[4-6]

[2-3]

PR300

66

[3-5],[2-4]

[2-3]

4.5x

[3-5],[4-6]

[2-3]


CPU Voltage Selection

CPU Type

Voltage Requirements

Intel Pentium
Cyrix/IBM 6x86
AMD K5

3.4V(STD) / 3.5V(VRE)

Intel Pentium with MMX
Cyrix/IBM 6x86L

2.8V

Cryix/IBM 6x86MX
AMD-K6-PR166, PR200

2.9V

AMD-K6-PR233

3.2V

AMD-K6-PR266, PR300

2.2V

 

JP15

JP14

Voltage

[1-3],[4-6]

[1-3],[2-4]

2.2V

[1-3],[2-4]

[1-3],[4-6]

2.8V

[3-5],[2-4]

[1-3],[4-6]

2.9V

[1-3],[2-4]

[3-5],[4-6]

3.2V

[1-3],[4-6]

[3-5],[4-6]

3.4V

[3-5],[4-6]

[3-5],[4-6]

3.5V


CAUTION:

For MMX or other split power plane CPU, JP8 must be fully opened before turning on the system power. Failure to do so may cause damages to your CPU. For Non-MMX or Non split power plane CPU, JP8 must keep closed.

JP9 is used to hold the jumpers when JP8 is fully opened

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Copyright(c) 1998 Zida Technologies Limited. All Rights Reserved.
Last Updated on 16 Sept 98

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