ICS950202

Integrated Circuit Systems, Inc. ICS950202 Programmable Timing Control HubTM for P4TM Recommended Application: CK-408 clock for Intel® 845 chipset. Output Features: 3 - Pairs of differential CPU clocks @ 3.3V 3 - 3V66 @ 3.3V 9 - PCI @ 3.3V 2 - 48MHz @ 3.3V fixed 1 - VCH/3V66 @ 3.3V, 48MHz or 66MHz 1 - REF @ 3.3V, 14.318MHz Features/Benefits: Programmable output frequency. Programmable output divider ratios. Programmable output rise/fall time. Programmable output skew. Programmable spread percentage for EMI control. 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. Key Specifications: CPU Output Jitter <150ps 3V66 Output Jitter <250ps CPU Output Skew <100ps VDDREF X1 X2 GND 1 **FS0/PCICLK7 1 **FS1/PCICLK8 VDDPCI GND 1 *WDEN/PCICLK0 PCICLK1 PCICLK2 PCICLK3 VDDPCI GND PCICLK4 PCICLK5 PCICLK6 VDD3V66 GND 3V66_1 3V66_2 3V66_3 #RESET VDDA Pin Configuration 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 REF/FS2** CPUCLKT0 CPUCLKC0 VDDCPU CPUCLKT1 CPUCLKC1 GND VDDCPU CPUCLKT2 CPUCLKC2 MULTISEL0* I REF GND 48MHz_USB/FS3** 48MHz_DOT AVDD48 GND 3V66_0/VCH_CLK/FS4** VDD3V66 GND SCLK SDATA Vtt_PWRGD/PD# GND 1 48-Pin 300-mil SSOP 1. These outputs have 2X drive strength. * Internal Pull-up resistor of 120K to VDD ** t...