IBM CI5VGM Series JP2 Sdram Operating Frequency, SW21-4 CPU Voltage Selector, Sdram Frequency

			Chapter 2	Installations
	100MHz	66MHz	4x	K6-2/400
off off off on on off on off
	100MHz	66MHz	4.5x	K6-2/450
off off off on on on on off

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

VIO

VCORE

3.5V

3.5V

on on on on

For Dual Voltage CPU:

Intel P55C, Cyrix 6x86L/MX/MII, AMD K6/K6-2, IDT WinChip 2-3D

SW2	VIO	VCORE	CPU
	3.3V	3.5V	WinChip 2-3D
			(0.35∝ )
on on on on
	3.3V	3.4V
off on on on
	3.3V	3.3V
on off on on

Remarks: 0.35∝ and 0.25∝ refers to CPU manufacturing process.

CI5VGM User’s Manual 19