GENERAL DESCRIPTION
The W83L197R-16 is a Clock Synthesizer which provides all clocks required for high-speed RISC or CISC microprocessor. Four different frequency of CPU, and PCI clocks are externally selectable with smooth transitions. The 0.5% or 0.75% center type spread spectrum can be selected to reduce EMI.

PRODUCT FEATURES
•  Supports Pentium II CPUs
•  4 sets of CPU frequencies selection
•  2 CPU clocks (one free running CPU clock)
•  6 PCI synchronous clocks(one free running PCI clock)
•  Optional single or mixed supply:
   (Vdd3 = VddC= 3.3V±5%) or (VddC = 2.5V±5%)
•  Skew form CPU to PCI clock 1.5 to 4.0 ns, CPU leads.
•  CPU clock jitter less than 200ps
•  PCI_F,PCI1:6 clock skew less than 500ps
•  ¡Ó0.5% or ¡Ó0.75% center type spread spectrum function to reduce EMI
•  Programmable registers to enable/stop each output and select modes
   (mode as Tri-state or Normal )
•  48 MHz for USB
•  28-pin SOP package (209mil)