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82503DUALSERIALTRANSCEIVER(DST)82503PRODUCTFEATURESETOVERVIEWYSingleComponentEthernet*InterfaceYDiagnosticLoopbacktoBoth802.310BASE-TandAUIYReset,LowPowerModesYAutomaticorManualPortSelectionYNetworkStatusIndicatorsYManchesterEncoder/DecoderandYDefeatableJabberTimerClockRecoveryYUserTestModesYNoGlueInterfacetoIndustry-StandardLANControllersY10MHzTransmitClockGeneratorÐIntel82586,82590,82593and82596YOneMicronCHMOS**IV(Px48)ÐAMD7990(LANCE*)TechnologyÐNationalSemiconductor8390and83932(SONIC*)YSingle5-VSupplyÐWesternDigital83C690ÐFujitsu86950(Etherstar*)INTERFACEFEATURESTPEAUIYComplieswith10BASE-T,IEEEStd.YComplieswithIEEE802.3AUIStandard802.3i-1990forTwistedPairEthernetYDirectInterfacetoAUITransformersYSelectablePolaritySwitchingYOn-ChipAUISquelchYDirectInterfacetoTPEAnalogFiltersYOn-ChipTPESquelchYDefeatableLinkIntegrity(LI)YSupportofCableLengthsl100mAblockdiagramofatypicalapplicationisshowninFigure1.The82503DualSerialTransceiverisahigh-inte-grationCMOSdevicedesignedtosimplifyinterfacingindustrystandardEthernetLANControllerstoIEEE802.3localareanetworkapplications(10BASE5,10BASE2,and10BASE-T).Thecomponentsupportsbothanattachmentunitinterface(AUI)andaTwistedPairEthernetinterface(TPE).ItallowsOEMstodesignastate-of-the-artmediainterfacethatisjumperlessandfullyautomatic.The82503includeson-chipAUIandTPEdriversandreceivers;itoffersdesignersacost-effective,integratedsolutionforinterfacingLANcontrol-lerstothewiremedium.**CHMOSisapatentedprocessofIntelCorporation.*EthernetisaregisteredtrademarkofXeroxCorporation.LANCEisaregisteredtrademarkofAdvancedMicroDevices.EtherstarisaregisteredtrademarkofFujitsuElectronics.SonicisaregisteredtrademarkofNationalSemiconductorCorporation.*Otherbrandsandnamesarethepropertyoftheirrespectiveowners.InformationinthisdocumentisprovidedinconnectionwithIntelproducts.Intelassumesnoliabilitywhatsoever,includinginfringementofanypatentorcopyright,forsaleanduseofIntelproductsexceptasprovidedinIntel'sTe
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