ICS950910

Integrated Circuit Systems, Inc. ICS950910 Programmable Timing Control Hub™ for P4™ Recommended Application: VIA P4X/P4M/KT/KN266/333 style chipsets. Output Features: 1 - Pair of differential CPU clocks @ 3.3V (CK408)/ 1 - Pair of differential open drain CPU clocks (K7) 1 - Pair of differential push pull CPU_CS clocks @ 2.5V 3 - AGP @ 3.3V 7 - PCI @ 3.3V 1 - 48MHz @ 3.3V fixed 1 - 24_48MHz @ 3.3V 2 - REF @ 3.3V, 14.318MHz Key Specifications: CPU_CS - CPUT/C: <±250ps CPU_CS - AGP: <±250ps CPU - DDR: <±250ps PCI - PCI: <500ps CPU - PCI: Min = 1.0ns, Typ = 2.0ns, Max = 4.0ns Features/Benefits: Programmable output frequency. Programmable output divider ratios. Programmable output rise/fall time. Programmable output skew. Programmable spread percentage for EMI control. DDR output buffer supports up to 200MHz. Watchdog timer technology to reset system if system malfunctions. Programmable watch dog safe frequency. Support I2C Index read/write and block read/write operations. Uses external 14.318MHz crystal. Frequency Table Bit2 Bit7 FS3 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 Bit6 FS2 0 0 0 0 1 1 1 1 1 1 1 1 0 0 0 0 Bit5 FS1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 Bit4 FS0 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 CPU MHz 105.00 140.00 210.00 174.99 80.00 106.66 160.00 133.33 100.00 133.33 200.00 166.66 100.00 133.33 200.00 166.66 AGP MHz 70.00 70.00 70.00 70.00 53.34 53.34 53.34 53.34 66.67 66.67 66.67 66.67 66.67 66.67 66.67 66....