ICS9248YF-78 Datasheet PDF - Integrated Circuit Systems

General Description
The ICS9248-78 is a single chip clock for Intel Pentium II. It provides all necessary clock signals for such a system.

FEATUREs
• Generates the following system clocks:
    - 2 - CPUs @ 2.5V, up to 150MHz.
    - 1 - IOAPIC @ 2.5V, PCI/2MHz.
    - 9 SDRAMs (3.3V), up to150MHz.
    -2 - 3V66 @ 3.3V, 2x PCIMHz.
    - 8 - PCIs @ 3.3V.
    - 1 - 48MHz, @ 3.3V fixed.
    - 2 - REF @ 3.3V, 14.318Hz.
    - 1 - 24MHz, @ 3.3V fixed.
• Supports spread spectrum modulation , down spread 0 to -0.5%, –0.25% center spread.
• I2C support for power management.
• Efficient power management scheme through PD#.
• Uses external 14.138 MHz crystal.