Features

+ Generates the following system clocks:

-3 CPU(2.5V/3.3V) up to 133.3MHz.

-6 PCI(3.3V) (including 1 free-running)

- 13 SDRAMSs(3.3V) up to 133.3MHz.

-3 REF (3.3V) @ 14.318MHz

-1 clock @ 24/14.3 MHz selectable output for SIO

-1 Fixed clock at48MHz (3.3V)

-1 IOAPIC@2.5V/3.3V

+ Skew characteristics:

- CPU - CPU<175ps

- SDRAM — SDRAM < 250ps

-CPU-SDRAM < 500ps

-CPU(early)—PCI: 1-4ns (typ. 3ns)

- PCI - PCI <500ps

+ Supports Spread Spectrum modulation +0.25 & £0.5

center spread

+ Serial 1'C interface for Power Management, Frequency

Select, Spread Spectrum.

« Efficient Power management scheme through PCI,

SDRAM, CPU STOP CLOCKS and PD#.

+ Uses external 14.318MHz crystal

+ 48 pin 300mil SSOP.