DATASHEET TM Programmable Timing Control Hub for Next ICS952601 TM Gen P4 Processor Features/Benefits: Recommended Application: Supports tight ppm accuracy clocks for Serial-ATA. CK409 clock, Intel Yellow Cover part Supports spread spectrum modulation, 0 to -0.5% down spread. Output Features: 3 - 0.7V current-mode differential CPU pairs Supports CPU clks up to 400MHz in test mode. 1 - 0.7V current-mode differential SRC pair Uses external 14.318MHz crystal, external crystal load 7 - PCI (33MHz) caps are required for frequency tuning. 3 - PCICLK F, (33MHz) free-running Supports undriven differential CPU, SRC pair in PD 1 - USB, 48MHz and CPU STOP for power management. 1 - DOT, 48MHz 2 - REF, 14.318MHz 4 - 3V66, 66.66MHz Pin Configuration 1 - VCH/3V66, selectable 48MHz or 66MHz Key Specifications: REF0 1 56 FS B CPU/SRC outputs cycle-cycle jitter < 125ps REF1 2 55 VDDA 3V66 outputs cycle-cycle jitter < 250ps VDDREF 3 54 GNDA PCI outputs cycle-cycle jitter < 250ps X1 4 53 GND CPU outputs skew: < 100ps X2 5 52 IREF +/- 300ppm frequency accuracy on CPU & SRC clocks GND 6 51 FS A 7 50 CPU STOP PCICLK F0 PCICLK F1849PCI STOP 948 PCICLK F2 VDDCPU Functionality VDDPCI 10 47 CPUCLKT2 GND 11 46 CPUCLKC2 CPU SRC 3V66 PCI REF USB/DOT B6b5 FS A FS B MHz MHz MHz MHz MHz MHz 12 45 PCICLK0 GND 0 0 100 100/200 66.66 33.33 14.318 48.00 PCICLK1 13 44 CPUCLKT1 0MIDRef/N Ref/N Ref/N Ref/N Ref/N Ref/N 0 1 2 3 4 5 PCICLK2 14 43 CPUCLKC1 0 1 200 100/200 66.66 33.33 14.318 48.00 0 1 0 133 100/200 66.66 33.33 14.318 48.00 15 42 PCICLK3 VDDCPU 1 1 166 100/200 66.66 33.33 14.318 48.00 VDDPCI 16 41 CPUCLKT0 1 MID Hi-Z Hi-Z Hi-Z Hi-Z Hi-Z Hi-Z 0 0 200 100/200 66.66 33.33 14.318 48.00 17 40 CPUCLKC0 GND 0 1 400 100/200 66.66 33.33 14.318 48.00 1 PCICLK4 18 39 GND 1 0 266 100/200 66.66 33.33 14.318 48.00 PCICLK5 19 38 SRCCLKT 1 1 333 100/200 66.66 33.33 14.318 48.00 20 37 PCICLK6 SRCCLKC PD 21 36 VDD 3V66 0 22 35 Vtt PWRGD 23 34 3V66 1 VDD48 VDD3V66 24 33 GND GND 25 32 48MHz DOT 26 31 3V66 2 48MHz USB 3V66 3 27 30 SDATA 28 29 SCLK 3V66 4/VCH 56-pin SSOP & TSSOP TM TM TM IDT Progammable Timing Control Hub for Next Gen P4 Processor 701J01/25/10 1 ICS952601ICS952601 TM TM Programmable Timing Control Hub for Next Gen P4 Processor Pin Description PIN PIN NAME PIN TYPE DESCRIPTION 1 REF0 OUT 14.318 MHz reference clock. 2 REF1 OUT 14.318 MHz reference clock. 3 VDDREF PWR Ref, XTAL power supply, nominal 3.3V 4 X1 IN Crystal input, Nominally 14.318MHz. 5 X2 OUT Crystal output, Nominally 14.318MHz 6 GND PWR Ground pin. 7 PCICLK F0 OUT Free running PCI clock not affected by PCI STOP . 8 PCICLK F1 OUT Free running PCI clock not affected by PCI STOP . 9 PCICLK F2 OUT Free running PCI clock not affected by PCI STOP . 10 VDDPCI PWR Power supply for PCI clocks, nominal 3.3V 11 GND PWR Ground pin. 12 PCICLK0 OUT PCI clock output. 13 PCICLK1 OUT PCI clock output. 14 PCICLK2 OUT PCI clock output. 15 PCICLK3 OUT PCI clock output. 16 VDDPCI PWR Power supply for PCI clocks, nominal 3.3V 17 GND PWR Ground pin. 18 PCICLK4 OUT PCI clock output. 19 PCICLK5 OUT PCI clock output. 20 PCICLK6 OUT PCI clock output. Asynchronous active low input pin used to power down the device into a low power state. The internal clocks are disabled and the 21 PD IN VCO and the crystal are stopped. The latency of the power down will not be greater than 1.8ms. Internal pull-up of 150K nomina 22 3V66 0 OUT 3.3V 66.66MHz clock output 23 3V66 1 OUT 3.3V 66.66MHz clock output 24 VDD3V66 PWR Power pin for the 3V66 clocks. 25 GND PWR Ground pin. 26 3V66 2 OUT 3.3V 66.66MHz clock output 27 3V66 3 OUT 3.3V 66.66MHz clock output 28 SCLK IN Clock pin of SMBus circuitry, 5V tolerant. TM TM TM IDT Progammable Timing Control Hub for Next Gen P4 Processor 701J01/25/10 2