W83194BR-B

The W83194BR-B is a Clock Synthesizer for Intel Brook dale 845 chipset. W83194BR-B provides all clocks required for high-speed microprocessor and provides step-less frequency programming and 32 different frequencies of CPU, PCI, and 3V66 clocks setting. All clocks are externally selectable with smooth transitions.
T
he W83194BR-B provides I2C serial bus interface to program the registers to enable or disable each clock outputs and provides -0.5% and +/-0.25% center type spread spectrum or programmable S.S.T. scale to reduce EMI.
The W83194BR-B also has watch dog timer and reset output pin to support auto-reset when systems hanging caused by improper frequency setting.

The W83194BR-B accepts a 14.318 MHz reference crystal as its input and runs on a 3.3V supply.

High drive PCI CLOCK outputs typically provide greater than 1 V /ns slew rate into 30 pF loads. CPU CLOCK outputs typically provide better than 1 V /ns slew rate into 20 pF loads as maintaining 50± 5% duty cycle. The fixed frequency outputs as REF and 48 MHz provide better than 0.5V /ns slew rate.