ICS950805

Integrated Circuit Systems, Inc. ICS950805 Frequency Generator with 200MHz Differential CPU Clocks Recommended Application: CK-408 clock for Almador-M and Brookdale-Mobile chipsets. Programmable for group to group skew. Output Features: 3 Differential CPU Clock Pairs (differential current mode) 7 PCI (3.3V) @ 33.3MHz 3 PCI_F (3.3V) @ 33.3MHz 1 USB (3.3V) @ 48MHz 1 DOT (3.3V) @ 48MHz 1 REF (3.3V) @ 14.318MHz 1 3V66 (3.3V) @ 66.6MHz 1 VCH/3V66 (3.3V) @ 48MHz or 66.6MHz 3 66MHz_OUT/3V66 (3.3V) @ 66.6MHz_IN or 66.6MHz 1 66MHz_IN/3V66 (3.3V) @ Input/66MHz Features: Almador Chipset has a DLL driving the clock buffer path for the 3 buffer path 66.6 MHz outputs, 66Buf(0:2). Almador board level designs MUST use pin 22, 66Buf_1, as the feedback connection from the clock buffer path to the Almador (GMCH) chipset. Supports spread spectrum modulation, down spread 0 to -0.5%. Efficient power management scheme through PD#, CPU_STOP# and PCI_STOP#. Key Specifications: CPU Output Jitter <150ps 3V66 Output Jitter <250ps 66MHz Output Jitter (Buffered Mode Only) <100ps CPU Output Skew <100ps Pin Configuration VDDREF X1 X2 GND PCICLK_F0 PCICLK_F1 PCICLK_F2 VDDPCI GND PCICLK0 PCICLK1 PCICLK2 PCICLK3 VDDPCI GND PCICLK4 PCICLK5 PCICLK6 VDD3V66 GND 66MHz_OUT0/3V66_2 66MHz_OUT1/3V66_3 66MHz_OUT2/3V66_4 66MHz_IN/3V66_5 *PD# VDDA GND Vtt_PWRGD# 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 4...