W147G datasheet(11/12 Pages) CYPRESS

Part #	W147G

Description	Frequency Generator for Integrated Core Logic

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Manufacturer	CYPRESS [Cypress Semiconductor]

Direct Link	http://www.cypress.com

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W147G

PRELIMINARY

11

Intel is a registered trademark of Intel Corporation.

Document #: 38-00820

Group Skew and Jitter Limits

Output Group

Pin-Pin Skew Max

Cycle-Cycle Jitter

Duty Cycle

Nom Vdd

Skew, Jitter

Measure Point

CPU

175 ps

250 ps

45/55

2.5V

1.25V

SDRAM

250 ps

45/55

3.3V

1.5V

APIC

250 ps

500 ps

45/55

2.5V

1.25V

48MHz

250 ps

500 ps

45/55

3.3V

1.5V

3V66

175 ps

500 ps

45/55

3.3V

1.5V

PCI

500 ps

45/55

3.3V

1.5V

REF

N/A

1000 ps

45/55

3.3V

1.5V

Clock Output Wave

2.5V Clocking

3.3V Clocking

Test Point

Test Load

TPERIOD

Duty Cycle

THIGH

2.0

1.25

0.4

TLOW

TRISE

TFALL

TLOW

TRISE

TFALL

TPERIOD

Duty Cycle

THIGH

2.4

1.5

0.4

Output

Buffer

Interface

Figure 8. Output Buffer

Ordering Information

Ordering Code

Package

Name

Package Type

W147G

H

56-pin SSOP (300 mils)

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