General Description

The ICS9248-189 is a main clock synthesizer chip for AMD-K7 based note book systems with VIA style chipset. This provides all clocks required for such a system. 2

Features:

• Up to 166MHz frequency support

• Support power management via hardware select CPU stop, CLOCK stop, PCI stop, and SDRAM stop

• Support power management via I2C programing

• Spread spectrum for EMI control (± 0.25 to ± 0.06 center, or 0 to -0.5 or -1.0 down spread)

• Uses external 14.318MHz crystal

Output Features:

• 1 - Differential pair open drain CPU clocks

• 1 - CPU clock @ 3.3V

• 7 - SDRAM @ 3.3V

• 8 - PCI @ 3.3V,

• 1 - 48MHz, @ 3.3V fixed

• 1 - 24/48MHz @ 3.3V

• 3 - REF @ 3.3V, 14.318MHz.