ICS9250-11 Datasheet (Integrated Circuit Systems) - Frequency Generator & Integrated Buffers

ICS9250-11, Frequency Generator & Integrated Buffers

The ICS9250-11 is a main clock synthesizer chip for Pentium II based systems using Rambus Interface DRAMs.

This chip provides all the clocks required for such a system when used with a Direct Rambus Clock Generator (DRCG) chip such as the ICS9212-01, 02, 03 and a PCI buffer 9112-17.

Spread Spectrum

ICS9250-11 Features

* Generates the following system clocks: - 6 - CPU Clocks 100/133MHz (2.5V). - 2 - CPU/2 output for synchronous memory reference (2.5V). - 4 - fixed frequency Clocks @ 66.6MHz (3.3V). - 2 - fixed frequency Clocks @ 33.3MHz (3.3V). - 6 - IOAPIC Clocks @ ¼ of CPUCLK or 16.667MHz, synchronous to CPU Cl