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ICS9248-138

Integrated Circuit Systems
Part Number ICS9248-138
Manufacturer Integrated Circuit Systems
Description Frequency Generator & Integrated Buffers
Published Oct 7, 2005
Detailed Description Integrated Circuit Systems, Inc. ICS9248-138 Preliminary Product Preview Frequency Generator & Integrated Buffers for ...
Datasheet PDF File ICS9248-138 PDF File

ICS9248-138
ICS9248-138

Overview
Integrated Circuit Systems, Inc.
ICS9248-138 Preliminary Product Preview Frequency Generator & Integrated Buffers for Celeron & PII/III™ Recommended Application: 810/810E and Solano type chipset.
Output Features: • 2- CPUs @ 2.
5V • 9 - SDRAM @ 3.
3V, including 1 free running • 7 - PCICLK @ 3.
3V • 1 - IOAPIC @ 2.
5V, • 3 - 3V66MHz @ 3.
3V • 2 - 48MHz, @ 3.
3V fixed.
• 1 - 24/48MHz, @3.
3V selectable by I2C • 1 - REF @v3.
3V, 14.
318MHz.
Features: • Up to 200MHz frequency support • Support FS0-FS4 strapping status bit for I2C read back.
• Support power management: Through Power down Mode from I2C programming.
• Spread spectrum for EMI control ( ± 0.
25% center).
• Uses external 14.
318MHz crystal Skew Specifications: • CPU – CPU: <175ps • SDRAM - SDRAM: < 250ps • 3V66 – 3V66: <175ps • PCI – PCI: <500ps • For group skew specifications, please refer to group timing relationship.
Pin Configuration 1 *SEL24_48#/REF0 VDDREF X1 X2 GNDREF GND3V66 3V66-0 3V66-1 3V66-2 VDD3V66 VDDPCI 1 *FS0/PCICLK0 1 ...


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