PCK2010DL datasheet(12/16 Pages) PHILIPS

12 / 16 page

Philips Semiconductors

Preliminary specification

PCK2010

CK98 (100/133MHz) Spread Spectrum System Clock

Generator

1999 Mar 01

1 (inactive)

0 (100MHz)

(Reserved)

100MHz, No Center

Spread

±0.5%

Active

1 (inactive)

0 (100MHz)

100MHz, No

Spread Spectrum

Inactive

100MHz, No Spread

Spectrum

Inactive

1 (inactive)

0 (100MHz)

100MHz, No

Spread Spectrum

Active

100MHz, No Down

Spread – 0.5%

Active

1 (inactive)

1 (133MHz)

Test Mode

Active

Test Mode

Active

1 (inactive)

1 (133MHz)

(Reserved)

133MHz, No Center

Spread

±0.5%

Active

1 (inactive)

1 (133MHz)

133MHz, No

Spread Spectrum

Inactive

133MHz, No Spread

Spectrum

Inactive

1 (inactive)

1 (133MHz)

133MHz, No

Spread Spectrum

Active

133MHz, No Down

Spread – 0.5%

Active

AC WAVEFORMS

VM = 1.25V @ VDDQ2 and 1.5V @ VDDQ3

VX = VOL + 0.3V

VY = VOH –0.3V

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

SW00354

3v66

@66MHz

CPU leads 3V66

Figure 1. CPUCLK to 3V66 offset

1.5V

PCICLK

@ 33MHz

VDDQ3

VSS

VDDQ3

VSS

THPOFFSET

SW00356

3V66 leads PCICLK

3V66

@ 66MHz

Figure 2. 3V66 to PCI offset

CPUCLK

@ 133MHz

1.25V

IOAPIC

@ 16.6MHz

VDDQ2

VSS

VDDQ2

VSS

THPOFFSET

SW00357

CPUCLK leads IOAPIC

Figure 3. CPU to IOAPIC offset

THKP

DUTY CYCLE

THKH

TRISE

TFALL

THKL

TPKP

TPKH

TRISE

TFALL

TPKL

2.5V CLOCKING

INTERFACE

3.3V CLOCKING

INTERFACE

(TTL)

2.0

1.25

0.4

2.4

1.5

0.4

SW00242

Figure 4. 2.5V/3.3V clock waveforms

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