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ICS950703 Datasheet(PDF) 1 Page - Integrated Circuit Systems |
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ICS950703 Datasheet(HTML) 1 Page - Integrated Circuit Systems |
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1 / 24 page  Integrated Circuit Systems, Inc. ICS950703 0690D—05/14/04 Recommended Application: Intel Tehema and Tehema-E Chipsets Output Features: • 4 Differential CPU Clock Pairs @ 3.3V • 2 - 3V MREF clocks for memory reference seeds, (separate single ended but 180 degrees out of phase) • 4 - 66MHz 3V66 output • 10 - 3V 33MHz PCI clocks • 2 - 48MHz clocks (180 degrees out of phase) • 2 - 14.318 reference output (180 degrees out of phase) Key Specifications: • 3V66 Output jitter <300ps • CPU Output Jitter <200ps • MREF Output jitter <250ps Programmable Timing Control HubTM for P4TM Features/Benefits: • QuadRom TM frequency selection. • Programmable asynchronous 3V66/PCI frequency. • Programmable output frequency. • Programmable output divider ratios. • Programmable output rise/fall time. • Programmable output skew. • Programmable spread percentage for EMI control. • Programmable watch dog safe frequency. • Support I 2C Index read/write and block read/write operations. • Uses external 14.318MHz reference input. Frequency Table Bit4 Bit3 Bit2 Bit1 Bit0 CPU MREF PCI 3V66 Sel133/100 FS3 FS2 FS1 FS0 MHz MHz MHz MHz 0 0 0 0 0 90.00 45.00 30.00 60.00 0 0 0 0 1 100.00 50.00 33.33 66.67 0 0 0 1 0 100.90 50.45 33.63 67.27 0 0 0 1 1 103.00 51.50 34.33 68.67 0 010 0 105.00 52.50 35.00 70.00 0 0 1 0 1 108.00 54.00 36.00 72.00 0 0 1 1 0 110.00 55.00 36.67 73.33 0 0 1 1 1 112.00 56.00 37.33 74.67 0 1 0 0 0 115.00 57.50 38.33 76.67 0 1 0 0 1 118.00 59.00 39.33 78.67 0 1 0 1 0 120.00 60.00 40.00 80.00 0 1 0 1 1 122.00 61.00 40.67 81.33 0 1 1 0 0 125.00 62.50 41.67 83.33 0 1 1 0 1 127.00 63.50 42.33 84.67 0 1 1 1 0 130.00 65.00 43.33 86.67 0 1 1 1 1 133.60 66.80 44.53 89.07 1 000 0 120.00 60.00 30.00 60.00 1 000 1 133.33 66.67 33.33 66.67 1 0 0 1 0 133.90 66.95 33.48 66.95 1 001 1 136.00 68.00 34.00 68.00 1 010 0 138.00 69.00 34.50 69.00 1 010 1 140.00 70.00 35.00 70.00 1 011 0 142.00 71.00 35.50 71.00 1 011 1 144.00 72.00 36.00 72.00 1 100 0 145.00 72.50 36.25 72.50 1 1 0 0 1 148.00 74.00 37.00 74.00 1 1 0 1 0 150.00 75.00 37.50 75.00 1 1 0 1 1 152.00 76.00 38.00 76.00 1 1 1 0 0 154.00 77.00 38.50 77.00 1 1 1 0 1 156.00 78.00 39.00 78.00 1 1 1 1 0 158.00 79.00 39.50 79.00 1 111 1 160.00 80.00 40.00 80.00 GND 1 56 VDDMREF MULTSEL0/REF0 2 55 3VMREF MULTSEL1/REF1 3 54 3VMREF_B VDDREF 4 53 GNDMREF X1 5 52 SCLK X2 6 51 CPUCLKT3 GNDREF 7 50 CPUCLKC3 PCICLK0 8 49 VDDCPU PCICLK1 9 48 CPUCLKT2 VDDPCI 10 47 CPUCLKC2 PCICLK2 11 46 GNDCPU PCICLK3 12 45 CPUCLKT1 GNDPCI 13 44 CPUCLKC1 PCICLK4 14 43 VDDCPU PCICLK5 15 42 CPUCLKT0 VDDPCI 16 41 CPUCLKC0 PCICLK6 17 40 GNDCPU **FS2/PCICLK7 18 39 IREF GNDPCI 19 38 AVDD **FS3/PCICLK8 20 37 GND **SEL100_133#/PCICLK9 21 36 VDD3V66 VDDPCI 22 35 3V66_3 SDATA 23 34 3V66_2 GND48 24 33 GND3V66 *FS0/48MHz_0 25 32 GND3V66 **FS1/48MHz_1 26 31 3V66_1 AVDD48 27 30 3V66_0 PD# 28 29 VDD3V66 * Internal Pull-Up Resistor ** Internal Pull-Down Resistor Pin Configuration 56-SSOP |
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