W83193R-04 Datasheet PDF - Winbond 83.3 MHZ 3-DIMM CLOCK Specs

W83193R-04 - 83.3 MHZ 3-DIMM CLOCK

This page provides the datasheet information for the W83193R-04, a member of the W83 83.3 MHZ 3-DIMM CLOCK family.

Datasheet Summary

Description

The W83193R-02/-04/-04A is a Main board Clock Synthesizer which provides all clocks required for high-speed RISC or CISC microprocessor such as Intel PentiumPro, PentiumII, AMD or Cyrix.

Eight different frequency of CPU and PCI clocks are externally selectable with smooth transitions.

Features

Supports Pentium™, Pentium™ Pro, Pentium™ II, AMD and Cyrix CPUs with I C. 2.
4 CPU clocks.
12 SDRAM clocks for 3 DIMs.
7 PCI synchronous clocks.
One IOAPIC clock for multiprocessor support.
Optional single or mixed supply: (VDD = VDDq3 = VDDq2 = VDDq2b = 3.3V) or (VDD = VDDq3 = 3.3V, VDDq2 = VDD2b = 2.5V).
< 250 pS skew among CPU and SDRAM clocks.
< 250 pS skew among PCI clocks.
Smooth frequency switch with.

Datasheet Details

Part number	W83193R-04
Manufacturer	Winbond
File Size	244.60 KB
Description	83.3 MHZ 3-DIMM CLOCK
Datasheet	W83193R-04 Datasheet
Additional preview pages of the W83193R-04 datasheet.

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Full PDF Text Transcription

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Preliminary W83193R-02/-04/-04A 83.3 MHZ 3-DIMM CLOCK 1.0 GENERAL DESCRIPTION The W83193R-02/-04/-04A is a Main board Clock Synthesizer which provides all clocks required for high-speed RISC or CISC microprocessor such as Intel PentiumPro, PentiumII, AMD or Cyrix. Eight different frequency of CPU and PCI clocks are externally selectable with smooth transitions. The W83193R-02/-04/-04A also provides I2C serial bus interface to program the registers to enable or disable each clock outputs and choose the 0.5% or 1.5% center type spread spectrum. The W83193R-02/-04/-04A accepts a 14.318 MHz reference crystal as its input and runs on a 3.3V supply. High drive PCI and SDRAM CLOCK outputs typically provide greater than 1V /nS slew rate into 30 pF loads.

Published: Apr 17, 2005 |