AR8031_datasheet

COMPANYCONFIDENTIAL•1DataSheet©2011byAtherosCommunications,Inc.Allrightsreserved.Atheros®,AtherosDriven®,Align®,AtherosXR®,DrivingtheWirelessFuture®,Intellon®,NoNewWires®,Orion®,PLC4Trucks®,Powerpacket®,SpreadSpectrumCarrier®,SSC®,ROCm®,SuperA/G®,SuperG®,SuperN®,TheAirisCleanerat5-GHz®,Total802.11®,U-Nav®,WakeonWireless®,WirelessFuture.UnleashedNow.®,andXSPAN®,areregisteredbyAtherosCommunications,Inc.AtherosSST™,Signal-SustainTechnology™,Ethos™,InstallNGo™,IQUE™,ROCm™,amp™,Simpli-Fi™,ThereisHere™,U-Map™,U-Tag™,and5-UP™aretrademarksofAtherosCommunications,Inc.TheAtheroslogoisaregisteredtrademarkofAtherosCommunications,Inc.Allothertrademarksarethepropertyoftheirrespectiveholders.Subjecttochangewithoutnotice.August2011Version1.1AR8031Integrated10/100/1000MbpsEthernetTransceiverGeneralDescriptionTheAR8031ispartoftheArcticfamilyofdevices—whichincludestheAR8031,AR8033,andAR8035.TheAR8031isAtheros’4thgeneration,singleport,10/100/1000Mbps,Tri-speedEthernetPHY.ItsupportsbothRGMIIandSGMIIinterfacestotheMAC.TheAR8031providesalowpower,lowBOM(BillofMaterials)costsolutionforcomprehensiveapplicationsincludingenterprise,carrierandhomenetworkssuchasCPE,homegateway,enterpriseswitch,carrierswitch/router,mobilebasestationandbasestationcontroller,opticalmoduleandmediaconverter,industryautomationandmeasurement.TheAR8031integratesAtherosGreenETHOS®powersavingtechnologiesandsignificantlysavespowernotonlyduringtheworktime,butalsoovertime.AtherosGreenETHOS®powersavingsincludeultra-lowpowerincableunpluggedmodeorportpowerdownmode,andautomaticoptimizedpowersavingbasedoncablelength.TheAR8031alsosupportsIEEE802.3azEEEstandard(EnergyEfficientEthernet)andAtherosproprietarySmartEEE.SmartEEEallowslegacyMAC/SoCdeviceswithout802.3azsupporttofunctionasacomplete802.3azsystem.Further,theAR8031supportsWake-on-LAN(WoL)featuretobeabletohelpmanageandregulatetotalsystempowerrequirements.TheAR8031embedsCDT(CableDiagnosticsTest)technologyon-chipwhichallowscustomerstomeasurecablelength,detectthecablestatus,andidentifyremoteandlocalPHYmalfunctions,badormarginalpatchcordsegmentsorconnectors.Someofthepossibleproblemsthatcanbedetectedincludeopens,shorts,cableimpedancemismatch,badconnectors,terminationmismatch,andabadtransformer.TheAR8031requiresonlyasingle,3.3Vpowersupply.On-chipregulatorsprovidealltheotherrequiredvoltages.ItintegratestheterminationR/CcircuitryonboththeMACinterfaces(RGMII/SGMII)andtheserialresistorsforthelineside.TheAR8031devicealsoincorporatesa1.25GHzSerDes.Thisinterfacecanbeconnecteddirectlytoafiber-optictransceiverfor1000BASE-X/100BASE-FXmodeortoMACdeviceforSGMIIinterface.TheAR8031supportsboth1588v2andsynchronousEthernettoofferacompletetimesynchronizationsolutiontomeetthenextgenerationnetworkrequirements.Thekeynewfeaturessupportedbythedeviceare:nClocksynchronizationbetweenslaveandgrandmasterbytheexchangeofPTPpackets.SupportsIEEE1588v2byofferinga1588paketparser,accuratetime-stampingandinsertiontosupportbothone-stepandtwo-stepclockmodesnSupportsbothIEEE1588v2andSynchronousEthernetbyofferingrecoveredclockoutputfromdataonthenetwork-lineside.TheAR8031supportsIEEE802.3azEnergyEfficientEthernet(EEE)standard.Thekeyfeaturessupportedbythedeviceare:n10BASE-TePHYusesreducedtransmitamplitude.n100BASE-TXand1000BASE-TuseLowPowerIdle(LPI)modetoturnoffunusedanaloganddigitalblockstosavepowerwhiledatatrafficisidle.Featuresn10/100/1000BASE-TIEEE802.3compliantnSupports1000BASE-TPCSandauto-negotiationwithnextpagesupportnSupportsRGMIIand/orSGMIIinterfacestoMACdevicesnSupportsFiberandCoppercombomodewhenMACinterfaceworksinRGMIImodenSupportsadditionalIEEE1000BASE-Xand100BASE-FXwithIntegratedSerDesnRGMIItimingmodessupportinternaldelayandexternaldelayonRxpath2�AR8031Integrated10/100/1000MbpsEthernetTransceiverAtherosCommunications,Inc.2�August2011COMPANYCONFIDENTIALnSupportsAtherosGreenETHOS®powersavingmodeswithinternalautomaticDSPpowersavingschemenSupportsIEEE802.3az(EnergyEfficientEthernet)nSupportsSmartEEEwhichallowsMAC/SoCdeviceswithoug802.3azsupporttofunctionasthecomplete802.3azsystemnSupportsWake-on-LAN(WoL)todetectmagicpacketandnotifythesleepingsystemtowakeupnFullyintegrateddigitaladaptiveequalizers,echocancellers,andNearEndCrosstalk(NEXT)cancellersnSupportsSynchronousEthernetwithselectablerecoveredclockoutputnRobustCableDischargeEvent(CDE)protectionof±6kVnError-freeoperationoverupto140metersofCAT5cablenAutomaticchannelswap(ACS)nAutomaticMDI/MDIXcrossovernAutomaticpolaritycorrectionnIEEE802.3ucompliantAuto-NegotiationnJumboFramesupportupto10KB(fullduplex)nMultipleloopbackmodesfordiagnosticsnRobustSurgeProtectionwith±750V/differentialmodeand±4kV/commonmodenCableDiagnosticTest(CDT)nSinglepowersupply:3.3V,optionalforexternalregulatorforcorevoltagen6mmx6mm,48-pinQFNpackagenIndustrytemperature(I-temp)optionavailable.AR8031FunctionalBlockDiagramDACWaveshapeFilterEchoCancellerNextCancellerHybridCircutPGAFeedForwardEqualizerADCAGCTimingandPhaseRecoveryDeskewerDecisionFeedbackEqualizerSymbolEncoderSymbolDecoderAuto-NegotiationMIIManagementRegistersDLLTRD[0:3]SGMII/Se