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Integrated Circuit Systems, Inc.
ICS9250-50
Frequency Generator & Integrated Buffers for PIII & Tualatin™
Recommended Application:
815B Solano B step style chipset
Output Features:
VDDA
• 2 - CPUs @ 2.5V, up to 133MHz. • 13 - SDRAM @ 3.3V, up to 133MHz.
X1 X2 GNDA
• 3 - 3V66 @ 3.3V, 2x PCI MHz. • 8 - PCI @ 3.3V
GND3V66 3V66-0 3V66-1
• 1 - 48MHz, @ 3.3V fixed • 1 - 24/48MHz @ 3.3V • 1 - REF @ 3.3V, 14.318MHz.
• 1 - IOAPIC @ 2.5V 16.67MHz.
3V66-2 VDD3V66
VDDPCI 1*FS0/PCICLK0 1*FS1/PCICLK1 1*SEL24_48#/PCICLK2
Features: • Support PC133 SDRAM.
GNDPCI PCICLK3 PCICLK4
• Up to 133MHz frequency support • Support power management through PD#
PCICLK5 VDDPCI PCICLK6
• Spread spectrum for EMI control (± 0.25% Center Spread or 0 to -0.5% down spread)
• Uses external 14.