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Integrated Circuit Systems, Inc.
ICS9248-64
AMD-K7TM System Clock Chip
General Description
The ICS9248-64 is a main clock synthesizer chip for AMDK7 based systems. This provides all clocks required for such a system when used with a Zero Delay Buffer Chip such as the ICS9179-06. 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 ICS9248-64 employs a proprietary closed loop design, which tightly controls the percentage of spreading over process and temperature variations.
Features
• Generates the following system clocks: - 3 differential pair open drain CPU clocks (1.5V external pull-up; up to 133MHz).
ICS9248-64 Datasheet
