Datasheet4U Logo Datasheet4U.com

W83195R-08 - 150MHZ 4-DIMM CLOCK

Description

The W83195R-08 is a Clock Synthesizer which provides all clocks required for high-speed RISC or CISC microprocessor such as Intel Pentium II.

W83195R-08 provides sixteen CPU/PCI frequencies which are externally selectable with smooth transitions.

Features

  • Supports Pentium™ II CPU with I2C. 3 CPU clocks (one free-running CPU clock) 17 SDRAM clocks for 4 DIMs 7 PCI synchronous clocks Two IOAPIC clocks for multiprocessor support Optional single or mixed supply: (Vddq1=Vddq2 = Vddq3 = Vddq4 = VddL1 =VddL2= 3.3V) or (Vddq1= Vddq2 = Vddq3=Vddq4 = 3.3V, VddL1 = VdqL2 = 2.5V) < 250ps skew among CPU and SDRAM clocks < 250ps skew among PCI clocks < 5ns propagation delay SDRAM from buffer input Ske.

📥 Download Datasheet

Datasheet preview – W83195R-08

📁 Similar Datasheet

Other Datasheets by Winbond

Full PDF Text Transcription

Click to expand full text
W83195R-08 150MHZ 4-DIMM CLOCK 1.0 GENERAL DESCRIPTION The W83195R-08 is a Clock Synthesizer which provides all clocks required for high-speed RISC or CISC microprocessor such as Intel Pentium II. W83195R-08 provides sixteen CPU/PCI frequencies which are externally selectable with smooth transitions. W83195R-08 also provides 17 SDRAM clocks controlled by the none-delay buffer_in pin. The W83195R-08 accepts a 14.318 MHz reference crystal as its input and runs on a 3.3V supply. Spread spectrum built in at ¡Ó0.5% or ¡Ó0.25% to reduce EMI. Programmable stopping individual clock outputs and frequency selection through I2C interface. The device meets the Pentium power-up stabilization, which requires CPU and PCI clocks be stable within 2 ms after power-up.
Published: |