PCK2020 datasheet(12/16 Pages) PHILIPS

Part #	PCK2020

Description	CK00 100/133MHz spread spectrum differential system clock generator

PDF	16 Pages

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Manufacturer	PHILIPS [NXP Semiconductors]

Direct Link	http://www.nxp.com

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Philips Semiconductors

Product specification

PCK2020

CK00 (100/133MHz) spread spectrum

differential system clock generator

2000 Nov 13

AC WAVEFORMS

VM = 1.25 V @ VDDL and 1.5 V @ VDD3

VX = VOL + 0.3 V

VY = VOH –0.3 V

VOL and VOH are the typical output voltage drop that occur with the

output load.

CPUCLK

@133MHz

1.5V

1.25V

VDDQ2

VSS

VDDQ3

VSS

THPOFFSET

SW00569

3v66

@66MHz

CPU leads 3V66

Figure 1. Host clock

VDDQ2

2.5VOLT MEASURE POINTS

VOH = 2.0V

VIH = 1.7V

1.25V

VIL = 0.7V

VOL = 0.4V

VSS

SYSTEM

MEASUREMENT

POINTS

VDDQ3

3.3VOLT MEASURE POINTS

VOH = 2.4V

VIH = 2.0V

1.5V

VIL = 0.7V

VOL = 0.4V

VSS

COMPONENT

MEASUREMENT

POINTS

SYSTEM

MEASUREMENT

POINTS

COMPONENT

MEASUREMENT

POINTS

SW00570

Figure 2. 3.3 V clock waveforms

tPLZ

tPZL

SEL1,

SEL0

GND

VDD

OUTPUT

LOW-to-OFF

OFF-to-LOW

VOL

VOH

OUTPUT

HIGH-to-OFF

OFF-to-HIGH

VSS

Outputs

enabled

Outputs

enabled

Outputs

disabled

tPHZ

tPZH

SW00571

Figure 3. State enable and disable times

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