ICS932S203 View Datasheet(PDF) - Integrated Device Technology

Part Name

Description

Manufacturer

ICS932S203

Frequency Generator with 133MHz Differential CPU Clocks

Integrated Device Technology 

DATASHEET

Frequency Generator with 133MHz Differential

CPU Clocks

ICS932S203

Recommended Application:

Pin Configuration

Servers based on Intel CK408 processors

Output Features:

• 4 Differential CPU Clock Pairs @ 3.3V

• 7 PCI (3.3V) @ 33.3MHz

• 3 PCI_F (3.3V) @ 33.3MHz

• 1 USB (3.3V) @ 48MHz

• 1 DOT (3.3V) @ 48MHz

• 1 REF (3.3V) @ 14.318MHz

• 1 3V66 (3.3V) @ 66.6MHz

• 1 VCH/3V66 (3.3V) @ 48MHz or 66.6MHz

• 3 66MHz_OUT/3V66 (3.3V) @ 66.6MHz_IN

or 66.6MHz

• 1 66MHz_IN/3V66 (3.3V) @ Input/66MHz

Features:

• Supports spread spectrum modulation,

down spread 0 to -0.5%.

• Efficient power management scheme through PD#

and PCI_STOP#.

• Uses external 14.318MHz crystal

• Stop clocks and functional control available through

SMBus interface.

Key Specifications:

56-Pin 300mil SSOP/TSSOP

* These inputs have 150K internal pull-up resistor to VDD.

• CPU Output Jitter <150ps

• 3V66 Output Jitter <250ps

• CPU Output Skew <150ps

Block Diagram

Functionality

FS1

FS0

CPU

(MHz)

1 0 100

1 1 133.3

0 0 100

0 1 133.3

mid 0 Hi-Z

mid 1 Tclk/2

3V66

(MHz)

66.6

66.6

66.6

66.6

Hi-Z

Tclk/4

66Buff[2:0]

3V66[4:2]

(MHz)

66.6 In path

66. In path

66.6

66.6

Hi-Z

Tclk/4

PCI_F

PCI

(MHz)

66.6 in/2

66.6 in/2

33.3

33.3

Hi-Z

Tclk/8

IDTTM Frequency Generator with 133MHz Differential CPU Clocks

1

0601G—01/26/10

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