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ICS951412YFLFT Datasheet(PDF) 3 Page - Integrated Circuit Systems |
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ICS951412YFLFT Datasheet(HTML) 3 Page - Integrated Circuit Systems |
3 / 10 page 3 ICS951412 0883G—12/08/04 PIN # PIN NAME TYPE DESCRIPTION 29 ATIGCLKC0 OUT Complementary clock of differential SRC clock pair. 30 ATIGCLKT0 OUT True clock of differential SRC clock pair. 31 GNDATI PWR Ground for ATI Gclocks, nominal 3.3V 32 VDDATI PWR Power supply ATI Gclocks, nominal 3.3V 33 SRCCLKC0 OUT Complement clock of differential SRC clock pair. 34 SRCCLKT0 OUT True clock of differential SRC clock pair. 35 VDDSRC PWR Supply for SRC clocks, 3.3V nominal 36 GNDSRC PWR Ground pin for the SRC outputs 37 IREF OUT This pin establishes the reference current for the differential current-mode output pairs. This pin requires a fixed precision resistor tied to ground in order to establish the appropriate current. 475 ohms is the standard value. 38 GNDA PWR Ground pin for the PLL core. 39 VDDA PWR 3.3V power for the PLL core. 40 CPUCLK8C1 OUT Complementary clock of differential 3.3V push-pull K8 pair. 41 CPUCLK8T1 OUT True clock of differential 3.3V push-pull K8 pair. 42 GNDCPU PWR Ground pin for the CPU outputs 43 VDDCPU PWR Supply for CPU clocks, 3.3V nominal 44 CPUCLK8C0 OUT Complementary clock of differential 3.3V push-pull K8 pair. 45 CPUCLK8T0 OUT True clock of differential 3.3V push-pull K8 pair. 46 GNDHTT PWR Ground pin for the HTT outputs 47 HTTCLK0 OUT 3.3V Hyper Transport output 48 VDDHTT PWR Supply for HTT clocks, nominal 3.3V. 49 GNDPCI PWR Ground pin for the PCI outputs 50 PCICLK0 OUT PCI clock output. 51 VDDPCI PWR Power supply for PCI clocks, nominal 3.3V 52 REF2 OUT 14.318 MHz reference clock. 53 **FS1/REF1 I/O Frequency select latch input pin / 14.318 MHz reference clock. 54 **FS0/REF0 I/O Frequency select latch input pin / 14.318 MHz reference clock. 55 GND PWR Ground pin. 56 VDDREF PWR Ref, XTAL power supply, nominal 3.3V Pin Descriptions (Continued) |
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