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CY28439 - Clock Generator

Description

Pin No.

6,56 1,5 3 Name VDD_PCI VSS_PCI FS_E/PCI4 Type PWR GND 3.3V power supply for outputs.

Ground for outputs.

Features

  • Compliant to Intel CK410.
  • Supports Intel Prescott and Tejas CPU.
  • Selectable CPU frequencies.
  • Differential CPU clock pairs.
  • 100-MHz differential SRC clocks (two selectable between Fixed and Overclocking).
  • 96-MHz differential dot clock.
  • 48-MHz USB clocks.
  • 33-MHz PCI clock.
  • Dial-A-Frequency.
  • Watchdog.
  • Two independent overclocking PLLs.
  • Low-voltage frequency select input.
  • I2C suppo.

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Full PDF Text Transcription

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www.DataSheet4U.com PRELIMINARY CY28439 Clock Generator for Intel Grantsdale Chipset Features • Compliant to Intel CK410 • Supports Intel Prescott and Tejas CPU • Selectable CPU frequencies • Differential CPU clock pairs • 100-MHz differential SRC clocks (two selectable between Fixed and Overclocking) • 96-MHz differential dot clock • 48-MHz USB clocks • 33-MHz PCI clock • Dial-A-Frequency • Watchdog • Two independent overclocking PLLs • Low-voltage frequency select input • I2C support with readback capabilities • Ideal Lexmark Spread Spectrum profile for maximum electromagnetic interference (EMI) reduction • 3.3V power supply • 56-pin SSOP and TSSOP packages CPU SRC x2 x6 PCI x9 REF DOT96 x2 x1 USB x1 24-48M x1 Block Diagram Xin Xout Pin Configuration VDD_RE F RE F 14.
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