ICS950812

Integrated Circuit Systems, Inc. ICS950812 Frequency Generator with 200MHz Differential CPU Clocks Recommended Application: Pin Configuration CK-408 clock with Buffered/Unbuffered mode supporting VDDREF 1 56 REF Almador, Brookdale, ODEM, and Montara-G chipsets with X1 2 55 FS1 PIII/P4 processor. Programmable for group to group skew. X2 3 54 FS0 Output Features: GND 4 53 CPU_STOP#* PCICLK_F0 5 52 CPUCLKT0 3 Differential CPU Clock Pairs @ 3.3V PCICLK_F1 6 51 CPUCLKC0 7 PCI (3.3V) @ 33.3MHz including 2 early PCI clocks PCICLK_F2 7 50 VDDCPU 3 PCI_F (3.3V) @ 33.3MHz VDDPCI 8 49 CPUCLKT1 GND 9 48 CPUCLKC1 1 USB (3.3V) @ 48MHz, 1 DOT (3.3V) @ 48MHz PCICLK0 10 47 GND 1 REF (3.3V) @ 14.318MHz **E_PCICLK1/PCICLK1 11 46 VDDCPU 5 3V66 (3.3V) @ 66.6MHz PCICLK2 12 45 CPUCLKT2 **E_PCICLK3/PCICLK3 13 44 CPUCLKC2 1 VCH/3V66 (3.3V) @ 48MHz or 66.6MHz VDDPCI 14 43 MULTSEL* 3 66MHz_OUT/3V66 (3.3V) @ 66.6MHz_IN or 66.6MHz GND 15 42 IREF PCICLK4 16 41 GND Features: PCICLK5 17 40 FS2 Provides standard frequencies and additional 5% PCICLK6 18 39 48MHz_USB/FS3** and 10% over-clocked frequencies VDD3V66 19 38 48MHz_DOT Supports spread spectrum modulation: GND 20 37 VDD48 No spread, Center Spread (±0.35%, ±0.5%, 66MHZ_OUT0/3V66_2 21 36 GND or ±0.75%), or Down Spread (-0.5%, -1.0%, or -1.5%) 66MHZ_OUT1/3V66_3 22 35 3V66_1/VCH_CLK/FS4** 66MHZ_OUT2/3V66_4 23 34 PCI_STOP#* Offers adjustable PCI early clock via latch inputs 66MHZ_IN/3V66_5 24 33 3V66_0/FS5** 2 Selectable 1X or 2X ...