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ICS952703 Datasheet(PDF) 1 Page - Integrated Circuit Systems |
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ICS952703 Datasheet(HTML) 1 Page - Integrated Circuit Systems |
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1 / 17 page  Integrated Circuit Systems, Inc. ICS952703 Preliminary Product Preview 0813B—05/17/05 Pin Configuration VDDREF 1 48 VDDLAPIC **FS0/REF0 2 47 IOAPIC1 **FS1/REF1 3 46 IOAPIC0 **Mode/REF2 4 45 GNDAPIC GNDREF 5 44 VDDSRC X1 6 43 SRCCLKT X2 7 42 SRCCLKC GNDZ 8 41 GND ZCLK0 9 40 CPUCLKODT1 ZCLK1 10 39 GNDCPU VDDZ 11 38 CPUCLKODT0 SCLK 12 37 CPUCLKODC0 VDDPCI 13 36 AVDD *FS2/PCICLK_F0 14 35 AGND *FS3/PCICLK_F1 15 34 IREF PCICLK0 16 33 SDATA PCICLK1 17 32 GNDAGP GNDPCI 18 31 AGPCLK0 VDDPCI 19 30 AGPCLK1 PCICLK2 20 29 VDDAGP *(PCI_STOP#)PCICLK3 21 28 AVDD48 *(CPU_STOP#)PCICLK4 22 27 12_48MHz/SEL12_48#MHz* *(PD#)PCICLK5 23 26 24_48MHz/SEL24_48#MHz**~ GNDPCI 24 25 GND48 48-SSOP * Internal Pull-Up Resistor ** Internal Pull-Down Resistor ~ This output have 1.5X Drive Strength Recommended Application: SiS741 style chipset with 964 South Bridge. Output Features: • 1 - Pair of differential open drain CPU outputs • 1 - Single-ended open drain CPU output • 1 - Pair of current mode differential serial reference clock • 8 - PCICLK @ 3.3V including 2 PCI clock free running • 2 - AGPCLK @ 3.3V • 3 - REF @ 3.3V • 2 - ZCLK @ 3.3V • 2 - IOAPIC @ 2.5V • 1 - 12_48MHz @ 3.3V • 1 - 24_48MHz @ 3.3V Key Specifications: • CPU Output Jitter <250ps • AGP Output Jitter <250ps • ZCLK Output Jitter <250ps • PCI Output Jitter <500ps • CPU-AGP/PCI/ZCLK skew: 2.5ns~3.5ns Programmable Timing Control Hub for K7TM System Functionality Features/Benefits: • Selectable synchronous/asynchronous AGP/PCI frequency • 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 reference input. Bit3 Bit2 Bit1 Bit0 CPU SRC ZCLK AGP PCI FS3 FS2 FS1 FS0 MHz MHz MHz MHz MHz 0 0 0 0 0 200.00 100.00 133.33 66.66 33.33 0 0 0 0 1 200.01 100.00 133.34 66.67 33.33 0 0 0 1 0 200.97 100.00 133.98 66.99 33.49 0 0 0 1 1 190.11 100.00 126.74 63.37 31.69 0 0 1 0 0 100.00 100.00 133.33 66.66 33.33 0 0 1 0 1 100.00 100.00 133.34 66.67 33.33 0 0 1 1 0 100.99 100.00 134.66 67.33 33.66 0 0 1 1 1 95.00 100.00 126.66 63.33 31.67 0 1 0 0 0 166.66 100.00 133.33 66.66 33.33 0 1 0 0 1 166.65 100.00 133.32 66.66 33.33 0 1 0 1 0 161.59 100.00 129.27 64.64 32.32 0 1 0 1 1 151.97 100.00 121.57 60.79 30.39 0 1 1 0 0 133.33 100.00 133.33 66.66 33.33 0 1 1 0 1 133.34 100.00 133.34 66.67 33.33 0 1 1 1 0 133.98 100.00 133.98 66.99 33.49 0 1 1 1 1 126.66 100.00 126.66 63.33 31.67 1 0 0 0 0 206.02 100.00 137.35 68.67 34.34 1 0 0 0 1 210.00 100.00 140.00 70.00 35.00 1 0 0 1 0 214.06 100.00 142.70 71.35 35.68 1 0 0 1 1 217.90 100.00 145.27 72.63 36.32 1 0 1 0 0 103.01 100.00 137.35 68.67 34.34 1 0 1 0 1 105.00 100.00 140.00 70.00 35.00 1 0 1 1 0 106.99 100.00 142.65 71.33 35.66 1 0 1 1 1 109.01 100.00 145.35 72.68 36.34 1 1 0 0 0 164.66 100.00 131.73 65.86 32.93 1 1 0 0 1 167.91 100.00 134.33 67.17 33.58 1 1 0 1 0 171.22 100.00 136.98 68.49 34.24 1 1 0 1 1 174.38 100.00 139.50 69.75 34.88 1 1 1 0 0 137.32 100.00 137.32 68.66 34.33 1 1 1 0 1 140.00 100.00 140.00 70.00 35.00 1 1 1 1 0 142.67 100.00 142.67 71.34 35.67 1 1 1 1 1 145.33 100.00 145.33 72.66 36.33 Bit4 |
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