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PI6C104

Spread Spectrum Clock Synthesizer for Desktop Pentium II

Pericom Semiconductor 

PI6C104

Spread Spectrum Clock Synthesizer

for Desktop Pentium II 111222333444555666777888999000111222333444555666777888999000111222333444555666777888999000111222111222333444555666777888999000111222333444555666777888999000111222333444555666777888999000111222111222333444555666777888999000111222333444555666777888999000111222333444555666777888999000111222111222333444555666777888999000111222333444555666777888999000111222333444555666777888999000111222111222333444555666777888999000111222

1.25V

1.25V

2.5V

Host CLK

tHSKW

1.25V

1.25V

VSS

2.5V

Host CLK

tHPOFFSET

1.5V

tHPOFFSET

VSS

3.3V

1.5V

PCI CLK

tPSKW

1.5V

VSS

3.3V

PCI CLK

VSS

Figure 1. Host Clock and PCI CLK Timing

Output

Buffer

Test

Point

Test Load

tHKP

Duty Cycle

2.5V 2.0

Clocking 1.25

Interface 0.4

tHKH

tHrise

tHfall

tHKL

3.3V 2.4

Clocking

Interface 1.5

(TTL) 0.4

tPKH

tPKP

tPKL

tPrise

tPfall

Figure 2. Clock Output Waveforms

244

PS8164B 03/15/99

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