ICS9148-111

Integrated Circuit Systems, Inc. ICS9148-111 Frequency Generator & Integrated Buffers for PENTIUM/ProTM Recommended Application: ALI (Aladdin V™ ) mobile. Output Features: 3 - CPUs @ 2.5V/3.3V, up to 100MHz. 3 - AGPCLK @ 3.3V 13 - SDRAM @ 3.3V, up to 100MHz. 6 - PCI @ 3.3V, including one free running. 1 - 48MHz, @ 3.3V fixed. 1 - REF @ 3.3V, 14.318MHz. Features: Up to 100MHz frequency support Support power management: CPU, PCI, AGP stop and, Power down Mode from I2C programming. Spread spectrum for EMI control (0 to -0.6%, ± 0.25%). Uses external 14.318MHz crystal FS pins for frequency select Key Specifications: CPU – CPU: <250ps SDRAM - SDRAM: <250ps AGP-AGP: <250ps PCI – PCI: <500ps CPU-SDRAM <500ps CPU(early)-PCI: 1-4ns, Center 2-6ns CPU-AGP <500ps Pin Configuration 48-Pin 300mil SSOP * Internal Pull-up Resistor of 240K to 3.3V on indicated inputs Block Diagram Functionality CPU, PCI AGP FS2 FS1 FS0 SDRAM (MHz) (MHz) (MHz) 1 1 1 100 33.33 66.67 1 1 0 95.25 31.75 63.50 1 0 1 83.3 33.30 66.60 1 0 0 75 30.00 60.00 0 1 1 91.5 30.50 61.00 0 1 0 96.22 32.07 64.15 0 0 1 66.8 33.40 66.80 0 0 0 60 30.00 60.00 REF, IOAPIC (MHz) 14.318 14.318 14.318 14.318 14.318 14.318 14.318 14.318 9148-111 Rev A 10/19/99 Third party brands and names are the property of their respective owners. ICS reserves the right to make changes in the device data identified in this publication without further notice. ICS advises its customers to obtain the latest ver...