General Description

The ICS9248-136 is the single chip clock solution for Desktop/Notebook designs using the SIS 630S style chipset. It provides all necessary clock signals for such a system.

Features:

• Up to 166MHz frequency support

• Support FS0-FS3 trapping status bit for I2C read back.

• Support power management: CPU, PCI, SDRAM stop and Power down Mode from I2C programming.

• Spread spectrum for EMI control (0 to -0.5, ± 0.25).

• Uses external 14.318MHz crystal

Output Features:

• 1 - Differential pair open drain CPU clock

• 1 - Single-ended open drain CPU clock

• 13 - SDRAM @ 3.3V

• 6- PCI @3.3V,

• 2 - AGP @ 3.3V

• 1- 48MHz, @3.3V fixed.

• 1- 24/48MHz, @3.3V selectable by I2C (Default is 24MHz)

• 2- REF @3.3V, 14.318MHz.