W83194R-KX

The W83194R-KX is a clock generator which provides all clocks required for AMD K7 system. W83194R-KX provides one differential pair CPU clock open drain outputs up to 143MHz which are externally selectable with smooth transitions. W83194R-KX also provides 6 PCI clocks and 13 SDRAM clocks controlled by the none-delay buffer_in pin.

The W83194R-KX accepts a 14.318 MHz reference crystal as its input and runs on a 3.3V supply. Spread spectrum built in at ±0.5% or ±0.25% 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.

High drive six PCI and thirteen SDRAM CLOCK outputs typically provide greater than 1 V /ns slew rate into 30 pF loads.
Two CPU CLOCK outputs typically provide better than 1 V /ns slew rate into 20 pF loads, when maintaining 50± 5% duty cycle. The fixed frequency outputs, such as REF, 24MHz, and 48 MHz provide better than 0.5V /ns slew rate.