ICS9250-12 - Frequency Generator & Integrated Buffers

Integrated Circuit Systems

Datasheet Details

Part number	ICS9250-12
Manufacturer	Integrated Circuit Systems
File Size	395.23 KB
Description	Frequency Generator & Integrated Buffers
Datasheet	ICS9250-12_IntegratedCircuitSystems.pdf

The ICS9250-12 is a main clock synthesizer chip for Pentium II based systems using Rambus Interface DRAMs.

Generates the following system clocks: - 4 CPU clocks ( 2.5V, 100/133MHz) - 8 PCI clocks, including 1 free-running (3.3V, 33MHz) - 2 CPU/2 clocks (2.5V, 50/66MHz) - 3 IOAPIC clocks (2.5V, 16.67MHz) - 4 Fixed frequency 66MHz clocks(3.3V, 66MHz) - 2 REF clocks(3.3V, 14.318MHz) - 1 USB clock (3.3V, 48MHz) Efficient power management through PD#, CPU_STOP# and PCI_STOP#. 0.5% typical down spread modulation on CPU, PCI, IOAPIC, 3V66 and CPU/2 output clocks. Uses external 14.318MHz crystal. K.

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Published: Dec 11, 2005 |