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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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    Last Updated on 3 Oct 97 HKT 15:30

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