ECS P5SD-B Plus, Manual, Page: 12 / 36

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Core Voltage Pins 1-2 Pins 3-4 Pins 5-6 Pins 7-8
2.8V Short Open Open Open
2.7V Open Short Short Short
2.6V Open Short Short Open
2.5V Open Short Open Short
2.4V Open Short Open Open
2.3V Open Open Short Short
2.2V Open Open Short Open
2.1V Open Open Open Short
2.0V Open Open Open Open
Set the Processor Clock Speed: JP1
The processor clock speed is determined by the product of the system bus speed (CPU
CLK set by JP6-JP12) with the multiplier value set by the six pin jumper JP1.
Bus Multiplier Pins 1-2 Pins 3-4 Pins 5-6
x1.5/x3.5 Open Open Open
x2.0 Short Open Open
x2.5 Short Short Open
x3.0 Open Short Open
x4.0 Close Open Close
x4.5 Close Close Close
x5.0 Open Close Close
x5.5 Open Open Close
Set for single voltage CPU or dual voltage CPU: JV_L1
Some CPUs require dual voltages and some CPUs require single voltages. The table
below shows the jumper setting with examples of the CPUs.
Function Jumper Cap Example CPUs
Single voltage CPU Open Pins 1-2 Intel P54C, IDT C6, AMD K5, IBM/Cyrix
6x86
Dual voltage CPU Short pins 1-2 Intel MMX, AMD K6/K6-2, IBM/Cyrix
6x86L/6x86MII
Set CPU I/O Voltage: JP13
Use this 4-pin jumper to set the CPU I/O voltage to either 3.3V or 3.52V.
Voltage Setting Jumper Cap
3.52 Volts Short 1-2
3.3 Volts Short 3-4
1-2
3-4
5-6
JP1
Default
x3.0
3
1 4
2
Default
3.3V
JP13