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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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PCK2020 датащи(PDF) 2 Page - NXP Semiconductors |
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PCK2020 датащи(HTML) 2 Page - NXP Semiconductors |
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2 / 16 page  Philips Semiconductors Product specification PCK2020 CK00 (100/133MHz) spread spectrum differential system clock generator 2 2000 Nov 13 853-2209 25006 FEATURES • 3.3 V operation • Four differential CPU clock pairs • Ten PCI clocks at 3.3 V • Four 66 MHz clocks at 3.3 V • Two 48 MHz clocks at 3.3 V • Two 14.318 MHz reference clocks • 100 or 133 MHz operation • Power management control pins • CPU clock skew less than 200 ps cycle-to-cycle • CPU clock skew less than 150 ps pin-to-pin • 1.5 ns to 3.5 ns delay on PCI pins • Spread Spectrum capability DESCRIPTION The PCK2020 is a clock synthesizer/driver for a Pentium III and other similar processors. The PCK2020 has four differential pair CPU current source outputs, two Mref clock outputs running at 1/2 the CPU clock frequency depending on the state of SEL133/100 pin and four 3V66 clocks running at 66 MHz. There are ten PCI clock outputs running at 33 MHz and two 48 MHz clocks. Finally, there are two 3.3 V reference clocks at 14.318 MHz. All clock outputs meet Intel’s drive strength, rise/fall times, jitter, accuracy, and skew requirements. The part possesses a dedicated power-down input pin for power management control. This input is synchronized on-chip and ensures glitch-free output transitions. PIN CONFIGURATION SW00577 1 2 3 4 5 6 7 8 9 10 11 12 45 46 47 48 49 50 51 52 53 54 55 56 VSSRef Ref1/MultSel1 VDD3.3Ref XTAL_IN XTAL_OUT VSSPCI PCICLK0 PCICLK1 VDD3.3PCI PCICLK2 VDD3.3M 3VMref 3VMref_b VSSM SPREAD CPUCLK0 CPUCLK0 CPUCLK1 VDD3.3CPU CPUCLK1 VSSCPU CPUCLK2 PCICLK3 13 14 15 16 17 18 39 40 41 42 43 44 VSSPCI PCICLK4 PCICLK5 VDD3.3PCI PCICLK6 CPUCLK2 CPUCLK3 VDD3.3CPU CPUCLK3 VSSCPU PCICLK7 19 38 I_REF VSSPCI 20 21 22 23 24 25 32 33 34 35 36 37 PCICLK8 PCICLK9 VDD3.3PCI SEL100/133 VSSUSB VDD3.3Core 3V66_0 VSSCore 3V66_1 VSS VSS 48MHz0/SelA 26 31 3V66_2 48MHz1/SelB 27 30 3V66_3 VDD3.3USB 28 29 PWRDWN VDD3.3 Ref0/MultSel0 VDD3.3 ORDERING INFORMATION PACKAGES TEMPERATURE RANGE ( °C) ORDER CODE DRAWING NUMBER 56-Pin Plastic SSOP 0 to +70 PCK2020 DL SOT371-1 Intel and Pentium are registered trademarks of Intel Corporation. |
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