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CY28347 - Universal Single-chip Clock Solution

Datasheet Summary

Description

Description Oscillator Buffer Input.

Connect to a crystal or to an external clock.

Oscillator Buffer Output.

Features

  • Supports VIA P4M266/KM266 chipsets Supports Pentium® 4, Athlon processors Supports two DDR DIMMS Provides.
  • Two different programmable CPU clock pairs.
  • Six differential DDR SDRAM pairs.
  • Two low-skew/low-jitter AGP clocks.
  • Six low-skew/low-jitter PCI clocks.
  • One 48M output for USB.
  • One programmable 24M or 48M for SIO.
  • Dial-a-Frequency and Dial-a-dB features.
  • Spread Spectrum for best e.

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Datasheet preview – CY28347

Datasheet Details

Part number CY28347
Manufacturer Cypress Semiconductor
File Size 237.28 KB
Description Universal Single-chip Clock Solution
Datasheet download datasheet CY28347 Datasheet
Additional preview pages of the CY28347 datasheet.

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Full PDF Text Transcription

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CY28347 Universal Single-chip Clock Solution for VIA P4M266/KM266 DDR Systems Features • • • • Supports VIA P4M266/KM266 chipsets Supports Pentium® 4, Athlon processors Supports two DDR DIMMS Provides — Two different programmable CPU clock pairs — Six differential DDR SDRAM pairs — Two low-skew/low-jitter AGP clocks — Six low-skew/low-jitter PCI clocks — One 48M output for USB — One programmable 24M or 48M for SIO • Dial-a-Frequency and Dial-a-dB features • Spread Spectrum for best electromagnetic interference (EMI) reduction • SMBus-compatible for programmability • 56-pin SSOP and TSSOP packages Table 1. Frequency Selection Table FS(3:0) 0000 0001 0010 0011 0100 0101 0110 0111 1000 1001 1010 1011 1100 1101 1110 1111 CPU 66.80 100.20 120.00 133.33 72.00 105.00 160.00 140.00 77.00 110.
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