3

ICS950402

0700B—04/30/04

General Description

The ICS950402 is a main system clock solution for desktop designs using the AMD K8 CPU. It provides all necessary

clock signals for Clawhammer and Sledgehammer systems.

The ICS950402 is part of a whole new line of ICS clock generators and buffers called TCH™ (Timing Control Hub). This

part incorporates ICS's newest clock technology which offers more robust features and functionality. Employing the

use of a serially programmable I

setting, the output divider ratios, selecting the ideal spread percentage, the output skew, the output strength, and

enabling/disabling each individual output clock. M/N control can configure output frequency with resolution up to

0.1MHz increment.

Power Groups

AVDD

GND

25

Crystal

29

27, 30

48MHz fixed,

32

33

Fix Analog, Fix Digital

43

42

CPU Master Clock, CPU Analog

VDD

GND

9

10

PCI33_HT66outputs

16, 19

15, 20

PCI33 outputs

35, 38

34, 39

CPU outputs

46

47

REF

Pin Number

Description

Mode Functionality Tables

ModeA

ModeB

Pin6

Pin7

Pin8

Pin11

0

0

HTTCLK0

HTTCLK1

HTTCLK2

PCICLK10

01

ModeA

(Input Only)

HTTCLK1

HTTCLK2

HTTCLK3

1

0

PCICLK7

PCICLK8

PCICLK9

PCICLK10

11

ModeA

(Input Only)

PCICLK8

PCICLK9

PCICLK10

ModeC

Pin24

0

PCICLK6

1

PCI_STOP#