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Integrated Circuit Systems
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General Description
The ICS9248-185 is the single chip clock solution for Notebook designs using the 440BX or the VIA Apollo Pro 133 style chipset. It provides all necessary clock signals for such a system. The ICS9248-185 provides CPU and PCI clocks with continous spread spectrum. The ICS9248-185 employs a proprietary closed loop design, which tightly controls the percentage of spreading over process and temperature variations.
FEATUREs:
• Up to 133MHz frequency support
• Support power management: PCI_STOP & CLK_STOP
• Spread spectrum for EMI control (-0.5% down spread).
• Uses external 14.318MHz crystal
• FS pins for frequency select
Output Features:
• 2 - CPUs @ 2.5V
• 5 - SDRAM @ 3.3V
• 3 - PCI @ 3.3V,
• 1 - 48MHz, @ 3.3V fixed.
• 2 - REF @ 3.3V, 14.318MHz.
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