ICS950908

Integrated Circuit Systems, Inc. ICS950908 Preliminary Product Preview Programmable Timing Control Hub™ for P4™ Recommended Application: Features/Benefits: VIA Pro266/PN266/CLE266/CM400 chipset for PIII/Tualatin/C3 Programmable output frequency. Processor Programmable output divider ratios. Programmable output rise/fall time. Output Features: Programmable output skew. 1 - Pair of differential CPU clocks @ 3.3V (CK408)/ Programmable spread percentage for EMI control. 1 - Pair of differential open drain CPU clocks (K7) Watchdog timer technology to reset system 2 - Push pull CPUT_CS clocks @ 2.5V if system malfunctions. 3 - AGP @ 3.3V Programmable watch dog safe frequency. 7 - PCI @ 3.3V Support I2C Index read/write and block read/write 1 - 48MHz @ 3.3V fixed operations. 1 - 24_48MHz @ 3.3V Uses external 14.318MHz crystal. 2 - REF @ 3.3V, 14.318MHz Key Specifications: CPU_CS - CPUT/C: <±250ps CPU_CS - AGP: <±250ps CPU - DDR/SD: <±250ps PCI - PCI: <500ps Frequency Table FS3 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 FS2 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 FS1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 FS0 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 CPUCLK MHz 160.00 164.00 166.60 170.00 175.00 180.00 185.00 190.00 66.80 100.90 133.60 200.40 66.60 100.00 200.00 133.30 AGP MHz 80.00 82.00 66.60 68.00 70.00 72.00 74.00 76.00 66.80 67.27 66.80 66.80 66.60 66.60 66.60 66.60 PCICLK MHz 40.00 41.00 33.30 34.00 35.00 36.00 37.00 38.00 33.40 33.63 33.40 33.40 32.30 33.30 33.30 33.3...