4

Integrated

Circuit

Systems, Inc.

ICS954201

0819G—12/06/04

ICS954201 is a CK410M Yellow Cover clock synthesizer. ICS954201 provides a single-chip solution for mobile systems built

with Intel P4-M processors and Intel mobile chipsets. ICS954201 is driven with a 14.318MHz crystal and generates CPU

outputs up to 400MHz. It provides the tight ppm accuracy required by Serial ATA and PCI-Express.

General Description

Block Diagram

Power Groups

VDD

GND

48

51

Xtal, Ref

1,7

2,6

PCICLK outputs

21,28,34

29

SRCCLK outputs

37

38

Master clock, CPU Analog

11

13

DOT, USB, PLL_48

42

45

CPUCLK clocks

Description

Pin Number

PROG.

SPREAD

MAIN PLL

PCICLK(5:2)

CONTROL

LOGIC

XTAL

OSC.

CPUCLK(1:0)

FIXED PLL

USB_48MHz

DIVIDER

PROG.

DIVIDERS

REF

SRCCLK(6:0)

ITP_EN

SDATA

SCLK

TEST_MODE

X1

X2

IREF

FS(C:A)

TEST_SEL

VTT_PWRGD#/PD

DOT_96MHz

PCICLK_F(1:0)

CPUCLK2_ITP/SRCCLK7

PCI/SRC_STOP#

CPU_STOP#