4

Integrated

Circuit

Systems, Inc.

ICS9FG107

0863C—11/22/04

ICS9FG107 is a Frequency Timing Generator that provides 7 differential output pairs that are compliant to the Intel CK409/

CK410 specification. It provides support for PCI-Express, next generation I/O, and SATA. The part synthesizes several output

frequencies from either a 14.31818 Mhz crystal or a 25 MHz crystal. The device can also be driven by a reference input clock

instead of a crystal. It provides outputs with cycle-to-cycle jitter of less than 85 ps and output-to-output skew of less than 85 ps.

ICS9FG107 also provides a copy of the reference clock and 3 33 MHz PCI output clocks. Frequency selection can be

accomplished via strap pins or SMBus control.

General Description

Block Diagram

Power Groups

I REF

Programmable

Spread

PLL1

Programmable

Frequency

Dividers

X2

XIN/CLKIN

SDATA

SCLK

REFOUT

DIF_STOP#

SEL14M_25M#

SPREAD

DWNSPRD#

OE (6:0)

FS (2:0)

Control

Logic

DIF (6:0)

DIF# (6:0)

PCICLK (1:0)

PCICLK_F

VDD

GND

34

10

6

14,19,31,36,40

15,35

N/A

47

48

47

IREF

Analog VDD & GND for PLL Core

Description

Pin Number

REFOUT, Digital Inputs, SMBus

DIF Outputs

PCI Outputs