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W83195AR-25 - 200MHZ 3-DIMM CLOCK FOR SOLANO CHIPSET

Description

The W83195AR-25 is a Clock Synthesizer for Intel 815 Solano chipset.

W83195AR-25 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.

Features

  • 2 CPU clocks (2.5V) 3 3V-66 clocks (3.3V) 12 SDRAM clocks for 3 DIMMs(3.3V) 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 I2C 2-Wire serial interface and I2C read back 0.25% center and 0.

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W83195AR-25 200MHZ 3-DIMM CLOCK FOR SOLANO CHIPSET 1.0 GENERAL DESCRIPTION The W83195AR-25 is a Clock Synthesizer for Intel 815 Solano chipset. W83195AR-25 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 W83195AR-25 provides I2C serial bus interface to program the registers to enable or disable each clock outputs and provides 0.25% and 0.5% center type spread spectrum to reduce EMI. The W83195AR-25 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.
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