Functional Description

The Z9973 has an integrated PLL that provides low-skew and low-jitter clock outputs for high-performance microprocessors. Three independent banks of four outputs as well as an independent PLL feedback output, FB_OUT, provide exceptional flexibility for possible output configurations. The PLL is ensured stable operation given that the VCO is configured to run between 200 MHz to 480 MHz. This allows a wide range of output frequencies up to125 MHz.

Features

? Output frequency up to 125 MHz

? 12 clock outputs: frequency configurable

? 350 ps max output-to-output skew

? Configurable output disable

? Two reference clock inputs for dynamic toggling

? Oscillator or PECL reference input

? Spread spectrum-compatible

? Glitch-free output clocks transitioning

? 3.3V power supply

? Pin-compatible with MPC973

? Industrial temperature range: –40°C to +85°C

? 52-pin TQFP package