W83194BR-SD

Stresses greater than those listed in this table may cause permanent damage to the device. Precautions should be taken to avoid application of any voltage higher than the maximum rated voltages to this circuit. Subjection to maximum conditions for extended periods may affect reliability. Unused inputs must always be tied to an appropriate logic voltage level (Ground or V_DD).

The W83194BR-SD is a Clock Synthesizer for Intel P4 Springdale series chipset. W83194BR-SD provides all clocks required for high-speed microprocessor and provides step-less frequency programming and 32 different frequencies of CPU, SRC, PCI, and 3V66 clocks setting. All clocks are externally selectable with smooth transitions.

The W83194BR-SD provides I²C serial bus interface to program the registers to enable or disable each clock outputs and provides +/-0.25%, +/-0.5% center type and 0.5%, -1.0% down type spread spectrum or programmable S.S.T. scale to reduce EMI.

The W83194BR-SD also has watchdog timer and reset output pin to support auto-reset when systems hanging caused by improper frequency setting.

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