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ICS950402YFLF-T Datasheet(PDF) 1 Page - Integrated Circuit Systems |
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ICS950402YFLF-T Datasheet(HTML) 1 Page - Integrated Circuit Systems |
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1 / 19 page  Integrated Circuit Systems, Inc. ICS950402 0700B—04/30/04 Block Diagram Functionality Pin Configuration Recommended Application: AMD K8 System Clock with AMD or VIA Chipset Output Features: • 2 - Differential pair push-pull CPU clocks @ 3.3V • 9 - PCICLK (Including 1 free running) @3.3V • 4 - Selectable PCICLK/HTTCLK @3.3V • 1 - 48MHz, @3.3V fixed. • 1 - 24/48MHz @ 3.3V • 3 - REF @3.3V, 14.318MHz. Features: • 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 I 2C Index read/write and block read/ write operations. • Uses external 14.318MHz crystal. • Supports Hyper Transport Technology (HTTCLK). AMD - K8™ System Clock Chip PLL2 PLL1 Spread Spectrum PCICLK (6:0, 11) CPUCLKT (1:0) CPUCLKC (1:0) X1 X2 XTAL OSC CPU DIVDER PCI DIVDER Stop Stop SDATA SCLK FS (3:0) 24_48SEL# MODE (A,B,C) PCI_STOP# Control Logic REF (2:0) 48MHz 24_48MHz / 2 PCICLK_F PCICLK/HTTCLK (3:0) X 2 Config. Reg. CPU HTT PCI MHz MHz MHz 0 0 0 0 100.90 67.27 33.63 0 0 0 1 133.90 66.95 33.48 0 0 1 0 168.00 67.20 33.60 0 0 1 1 202.00 67.33 33.67 0 1 0 0 100.20 66.80 33.40 0 1 0 1 133.50 66.75 33.38 0 1 1 0 166.70 66.68 33.34 0 1 1 1 200.40 66.80 33.40 1 0 0 0 150.00 60.00 30.00 1 0 0 1 180.00 60.00 30.00 1 0 1 0 210.00 70.00 35.00 1 0 1 1 240.00 60.00 30.00 1 1 0 0 270.00 67.50 33.75 1 1 0 1 233.33 66.67 33.33 1 1 1 0 266.67 66.67 33.33 1 1 1 1 300.00 75.00 37.50 FS3 FS2 FS1 FS0 *FS0/REF0 1 48 REF1/FS1* VDDREF 2 47 GND X1 3 46 VDDREF X2 4 45 REF2/FS2* GND 5 44 Reset# *(PCICLK7/HTTCLK0)ModeA 6 43 VDDA *PCICLK8/HTTCLK1/ModeB 7 42 GND PCICLK9/HTTCLK2 8 41 CPUCLK8T0 VDDPCI 9 40 CPUCLK8C0 GND 10 39 GND PCICLK10/HTTCLK3 11 38 VDDCPU PCICLK11 12 37 CPUCLK8T1 PCICLK0 13 36 CPUCLK8C1 PCICLK1 14 35 VDDCPU GND 15 34 GND VDDPCI 16 33 GND ****PCICLK2 17 32 VDD ****PCICLK3 18 31 48MHz/FS3** VDDPCI 19 30 GND GND 20 29 AVDD48 PCICLK4 21 28 24_48MHz/Sel24_48#*~ PCICLK5 22 27 GND ~*PCICLK_F/ModeC 23 26 SDATA ~*(PCICLK6)PCI_STOP# 24 25 SCLK 48-Pin TSSOP/SSOP * Internal Pull-Up Resistor ** Internal Pull-Down Resistor ~ This Output has 2X Drive Strength **** This Output has 2.3X Drive Strength |
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