IBM CI5VGM Series, User Manual

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Chapter 2 Installations
CI5VGM User’s Manual 19
off off off on on off on off
100MHz 66MHz 4x K6-2/400
off off off on on on on off
100MHz 66MHz 4.5x K6-2/450
JP2: SDRAM Operating Frequency
JP2 SDRAM Frequency
pin 1-2 short Run CPU Clock
pin 2-3 short Run AGP Clock
NOTE: Set the SDRAM Frequency to Run CPU Clock only when the
CPU clock is 100MHz and the DIMM module onboard meets
PC-100 specifications.
SW2(1-4): CPU Voltage Selector
For Single Voltage CPU:
Intel P54C, Cyrix 6x86, AMD K5, IDT WinChip C6
SW2 V
IO
V
CORE
on on on on
3.5V 3.5V
For Dual Voltage CPU:
Intel P55C, Cyrix 6x86L/MX/MII, AMD K6/K6-2, IDT WinChip 2-3D
SW2 V
IO
V
CORE
CPU
on on on on
3.3V 3.5V
WinChip 2-3D
(0.35
µ
)
off on on on
3.3V 3.4V
on off on on
3.3V 3.3V
Remarks: 0.35
µ
and 0.25
µ
refers to CPU manufacturing process.