et1011c-数据手册(英文)

DataSheetSeptember2007TruePHY™ET1011CGigabitEthernetTransceiverFeaturesn10Base-T,100Base-TX,and1000Base-TgigabitEthernettransceiver:—0.13µmprocess—128-pinTQFPand84-pinMLCC:oRGMII,GMII,MII,RTBI,andTBIinterfacestoMACorswitch—68-pinMLCC:oRGMIIandRTBIinterfacestoMACorswitchnLowpowerconsumption:—Typicalpowerlessthan750mWin1000Base-Tmode—Advancedpowermanagement—ACPIcompliantwake-on-LANsupportnOversamplingarchitecturetoimprovesignalintegrityandSNRnOptimized,extendedperformanceechoandNEXTfil-tersnAll-digitalbaselinewandercorrectionnDigitalPGAcontrolnOn-chipdiagnosticsupportnAutomaticspeednegotiationnAutomaticspeeddownshiftnSinglesupply3.3Vor2.5Voperation:—On-chipregulatorcontrollers—3.3Vor2.5VdigitalI/O—3.3VtolerantI/Opins(MDC,MDIO,COMA,RESET_N,andJTAGpins)—1.0Vor1.1Vcorepowersupplies—1.8Vor2.5VfortransformercentertapnJTAGnET1011Cisapin-compatiblereplacementfortheET1011devicenCommercial-andindustrial-temperatureversionsavail-ableIntroductionTheLSIET1011CisaGigabitEthernettransceiverfabri-catedonasingleCMOSchip.Packagedineitheran128-pinTQFP,an84-pinMLCC,ora68-pinMLCC,theET1011Cisbuilton0.13µmtechnol-ogyforlowpowerconsumptionandapplicationinserveranddesktopNICcards.Itfeaturessinglepowersupplyoperationusingon-chipregulatorcontrollers.The10/100/1000Base-TdeviceisfullycompliantwithIEEE®802.3,802.3u,and802.3abstandards.TheET1011Cusesanoversamplingarchitecturetogathermoresignalenergyfromthecommunicationchannelthanpossiblewithtraditionalarchitectures.Theadditionalsig-nalenergyoranalogcomplexitytransfersintothedigitaldomain.Theresultisananalogfrontendthatdeliversrobustoperation,reducedcost,andlowerpowerconsump-tionthantraditionalarchitectures.Usingoversamplinghasallowedfortheimplementationofafractionallyspacedequalizer,whichprovidesbetterequalizationandhasgreaterimmunitytotimingjitter,resultinginbettersignal-to-noiseratio(SNR)andthusimprovedBER.Inaddition,advancedtimingalgorithmsareusedtoenableoperationoverawiderrangeofcablingplants.TableofContentsContentsPageContentsPage2LSICorporationDataSheetSeptember2007GigabitEthernetTransceiverTruePHYET1011CFeatures.................................................................................1Introduction..........................................................................1FunctionalDescription.........................................................5OversamplingArchitecture...............................................5AutomaticSpeedDownshift.............................................5TransmitFunctions...........................................................6ReceiveFunctions.............................................................6Autonegotiation................................................................7CarrierSense(128-PinTQFPand84-PinMLCCOnly).....................................................7LinkMonitor.....................................................................8LEDs.................................................................................8RegulatorControl.............................................................8ResettingtheET1011C.....................................................8LoopbackMode................................................................9DigitalLoopback..............................................................9AnalogLoopback............................................................10Low-PowerModes..........................................................11PinInformation...................................................................12PinDiagram,128-PinTQFP..........................................12PinDiagram,84-PinMLCC...........................................13PinDiagram,68-PinMLCC..........................................14PinDescriptions,128-PinTQFP,84-PinMLCC,and68-PinMLCC.......................................................15MACInterface................................................................22ManagementInterface....................................................27ConfigurationInterface...................................................29LEDsInterface................................................................31Media-DependentInterface:TransformerInterface.................................................32ClockingandReset.........................................................33JTAG...............................................................................34RegulatorControl...........................................................34Power,Ground,andNoConnect....................................35CableDiagnostics...............................................................36RegisterDescription...........................................................37RegisterAddressMap.....................................................37RegisterFunctions/Settings............................................38ElectricalSpecifications.....................................................62AbsoluteMaximumRatings...........................................62RecommendedOperatingConditions...........