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W167B - 133-MHz Spread Spectrum FTG

General 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.

Key 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.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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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.