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Integrated Circuit Systems, Inc.
ICS9248-61
Frequency Timing Generator for Pentium II Systems
General Description
The ICS9248-61 is the Main clock solution for Notebook designs using the Intel 440BX style chipset. Along with an SDRAM buffer such as the ICS9179-03, it provides all necessary clock signals for such a system. Spread spectrum may be enabled by driving pin 26, SPREAD# active (Low) at power-on. Spread spectrum typically reduces system EMI by 8dB to 10dB. This simplifies EMI qualification without resorting to board design iterations or costly shielding. The ICS9248-61 employs a proprietary closed loop design, which tightly controls the percentage of spreading over process and temperature variations.
Features
Generates the following system clocks: - 2CPU(2.5V) up to 100MHz.
ICS9248-61 Datasheet
