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W83194AR-WE - 200MHZ CLOCK

General Description

The W83194AR-We is a Clock Synthesizer for Intel Whitney chipset.

W83194AR-We provides all clocks required for high-speed RISC or CISC microprocessor and also provides 64 different frequencies of CPU, SDRAM, PCI, 3V66, IOAPIC clocks frequency setting.

Key Features

  • 2 CPU clocks 9 SDRAM clocks for 2 DIMMs 8 PCI synchronous clocks. Optional single or mixed supply: (VddR = VddP=VddS = Vdd48 = Vdd3 = 3.3V, VddA=VddC=2.5V) Skew form CPU to PCI clock -1 to 4 ns, center 2.6 ns Smooth frequency switch with selections from 66.8 to 200MHz 2 2 I C 2-Wire serial interface and I C read back 0.5% and 0.75% center type spread spectrum Programmable regis.

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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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W83194AR-We 200MHZ CLOCK FOR WHITNEY CHIPSET 1.0 GENERAL DESCRIPTION The W83194AR-We is a Clock Synthesizer for Intel Whitney chipset. W83194AR-We provides all clocks required for high-speed RISC or CISC microprocessor and also provides 64 different frequencies of CPU, SDRAM, PCI, 3V66, IOAPIC clocks frequency setting. All clocks are externally selectable with smooth transitions. The W83194AR-We provides I C serial bus interface to program the registers to enable or disable each clock outputs and provides 0.5% and 0.75% center type spread spectrum to reduce EMI. The W83194AR-We 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 1 V /ns slew rate into 30 pF loads.