W167B - 133-MHz Spread Spectrum FTG

Description

CPU Clock Outputs 0 through 2: CPU clock outputs.

Their output voltage swing is controlled by voltage applied to VDDQ2.

SEL133/100#: Frequency selection input pin as shown in Table 1.

Features

Maximized EMI Suppression using Cypress’s Spread Spectrum technology.
Three copies of CPU outputs selectable frequency.
Three copies of 3V66 selectable frequency output at 3.3V.
Ten copies of PCI clocks (selectable frequency), 3.3V.
One double strength 14.318-MHz reference output at 3.3V.
One copy of 48-MHz USB clock.
One copy of selectable 24-/48-MHz for SIO.
One copy of CPU-divide-by-2 output as reference input to Direct.

Cypress Semiconductor

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Datasheet Details

Part number	W167B
Manufacturer	Cypress
File Size	180.22 KB
Description	133-MHz Spread Spectrum FTG
Datasheet	W167B Datasheet
Additional preview pages of the W167B datasheet.

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Full PDF Text Transcription

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PRELIMINARY W167B 133-MHz Spread Spectrum FTG for Pentium® II Platforms Features • Maximized EMI Suppression using Cypress’s Spread Spectrum technology • Three copies of CPU outputs selectable frequency • Three copies of 3V66 selectable frequency output at 3.3V • Ten copies of PCI clocks (selectable frequency), 3.3V • One double strength 14.318-MHz reference output at 3.3V • One copy of 48-MHz USB clock • One copy of selectable 24-/48-MHz for SIO • One copy of CPU-divide-by-2 output as reference input to Direct Rambus™ Clock Generator (Cypress W134) • Three copies of IOAPIC • Available in 48-pin SSOP (300 mils) Duty Cycle: ................................................................ 45/55% Spread Spectrum Modulation:................................... ±0.

Published: Apr 17, 2005 |