ICS9150F-04 datasheet(4/19 Pages) ICST

4 / 19 page

ICS9150- 04

Mode Pin - Power Management Input Control

Power Management Functionality

Spread Spectrum Functionality

CPU 3.3#_2.5V Buffer selector for CPUCLK driver.

CPU3.3#_2.5

Latched Input Level

Buffer Selected

for Operation at:

2.5V VDD

3.3V VDD

BYTE0, Bit1

SS_EN

BYTE0, Bit2

SS_TYPE

BYTE0, Bit7

CPU, SDRAM

and PCI CLOCKS

REF, IOAPIC

24,48MHz

Frequency modulated in center spread

spectrum mode +1.5%, -1.5%

14.318MHz

24,48MHz

Frequency modulated in center spread

spectrum mode +0.5%, -0.5%

14.318MHz

24,48MHz

Frequency modulated in down spread

spectrum mode +0%, -3.0%

14.318MHz

24,48MHz

Frequency modulated in down spread

spectrum mode +0%, -1.0%

14.318MHz

24,48MHz

Normal, Steady frequency mode

14.318MHz

24,48MHz

MODE, Pin 55

Pin 54

Pin 16

CPU_STOP#

Input

PCI_STOP#

Input

IOAPIC1

Output

PCICLK5

Output

CPU_STOP#

PCI_STOP#

CPUCLK

Outputs

PCICLK(0:5)

Outputs

PCICLK_F,

REF, IOAPIC

48MHz

and SDRAM

Crystal

OSC

VCO

Stopped Low

Running

Stopped Low

Running

Stopped Low

Running

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