Integrated Circuit Systems, Inc.
ICS9248-77 Frequency Timing Generator for PENTIUM II Systems General Description The ICS9248-77 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.
Spread Spectrum may be enabled by driving the SPREAD# pin active.
Spread spectrum typically reduces system EMI by 8dB to 10dB.
This simplifies EMI qualification without resorting to board design iterations or costly shielding.
The ICS924877 employs a proprietary closed loop design, which tightly controls the percentage of spreading ...

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