3

Integrated

Circuit

Systems, Inc.

ICS952607

0734A—07/26/05

ICS952607 is a 48 pin clock chip following Intel CK409 Yellow Cover specification. This clock synthesizer provides a single

chip solution for next generation P4 Intel processors and Intel chipsets. ICS952607 is driven with a 14.318MHz crystal. It

generates CPU outputs up to 200MHz. It also provides a tight ppm accuracy output for Serial ATA suuport.

The ICS952607 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

2C interface, this device can adjust the output clocks by configuring the frequency 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. This part also

provides 128 frequency selections via ICS QuadROM

TM technology as an alternate to M/N programming.

General Description

Block Diagram

Power Groups

I REF

RESET#

PLL2

Frequency

Dividers

Programmable

Spread

PLL1

Programmable

Frequency

Dividers

STOP

Logic

48MHz (1:0)

24_48MHz

X1

X2

XTAL

SDATA

SCLK

VTTPWRGD#

PD#

FS (4:0)

Sel24_48#

Control

Logic

REF (2:0)

CPUCLKT (1:0)

CPUCLKC (1:0)

SRCCLKT

SRCCLKC

3V66 (3:0)

PCICLK (5:0)

PCICLK_F (2:0)

VDD

GND

4

7

Xtal, Ref

28

29

3V66

11,17

12,18

PCICLK outputs

35

38

SRCCLK outputs

41

44

CPU outputs

48

47

MCLK, CPU Analog, CPU digital

25

24

48MHz Fix, Fix Digital, Fix analog

Description

Pin Number