(正版标准) ISO 11898-5-2007.pdf
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(正版标准) ISO 11898-5-2007.pdf
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INTERNATIONALSTANDARDISO11898-5Firstedition2007-06-15Roadvehicles-Controllerareanetwork(CAN)-Part5:
High-speedmediumaccessunitwithlow-powermodeVehiculesroutiers-Gestionnairedereseaudecommunication(CAN)-Partie5:
Unitedaccesaumediumhautevitesseavecmodedepuissancereduite-ISOJ-g=-=-=ReferencenumberISO11898-5:
2007(E)ISO2007ISO11898-5:
2007(E)PDFdisclaimerThisPDFfilemaycontainembeddedtypefaces.InaccordancewithAdobeslicensingpolicy,thisfilemaybeprintedorviewedbutshallnotbeeditedunlessthetypefaceswhichareembeddedarelicensedtoandinstalledonthecomputerperformingtheediting.Indownloadingthisfile,partiesacceptthereintheresponsibilityofnotinfringingAdobeslicensingpolicy.TheISOCentralSecretariatacceptsnoliabilityinthisarea.AdobeisatrademarkofAdobeSystemsIncorporated.DetailsofthesoftwareproductsusedtocreatethisPDFfilecanbefoundintheGeneralInforelativetothefile;thePDF-creationparameterswereoptimizedforprinting.EverycarehasbeentakentoensurethatthefileissuitableforusebyISOmemberbodies.Intheunlikelyeventthataproblemrelatingtoitisfound,pleaseinformtheCentralSecretariatattheaddressgivenbelow.COPYRIGHTPROTECTEDDOCUMENTISO2007Allrightsreserved.Unlessotherwisespecified,nopartofthispublicationmaybereproducedorutilizedinanyformorbyanymeans,electronicormechanical,includingphotocopyingandmicrofilm,withoutpermissioninwritingfromeitherISOattheaddressbeloworISOsmemberbodyinthecountryoftherequester.ISOcopyrightofficeCasepostale56CH-1211Geneva20Tel.+41227490111Fax+41227490947E-mailcopyrightiso.orgWebwww.iso.orgPublishedinSwitzerlandiiISO2007-AllrightsreservedISO11898-5:
2007(E)ContentsPageForeword.ivIntroduction.v1Scope.12Normativereferences.13Termsanddefinitions.14Symbolsandabbreviatedterms.25Functionaldescriptionofmediumaccessunit(MAU)withlow-powermode.25.1General.25.2Physicalmediumattachmentsublayerspecification.26Conformancetests.56.1General.56.2Vsplitoutputfunction.56.3Outputvoltageduringlow-powermode.66.4Internalresistanceduringlow-powermode.66.5Propagationdelayduringnormalmode.76.6Wake-upfiltertimeduringlow-powermode.76.7Busdriversymmetryduringnormalmode.76.8Inputleakagecurrent,unpowereddevice.87Electricalspecificationofhigh-speedmediumaccessunit(HS-MAU).87.1Physicalmediumattachmentsublayerspecification.87.2CANnode.107.3Mediumdependentinterface(MDI)specification,connectorparameters.187.4Physicalmediumspecification.18Bibliography.20ISO2007-AllrightsreservediiiISO11898-5:
2007(E)ForewordISO(theInternationalOrganizationforStandardization)isaworldwidefederationofnationalstandardsbodies(ISOmemberbodies).TheworkofpreparingInternationalStandardsisnormallycarriedoutthroughISOtechnicalcommittees.Eachmemberbodyinterestedinasubjectforwhichatechnicalcommitteehasbeenestablishedhastherighttoberepresentedonthatcommittee.Internationalorganizations,governmentalandnon-governmental,inliaisonwithISO,alsotakepartinthework.ISOcollaboratescloselywiththeInternationalElectrotechnicalCommission(IEC)onallmattersofelectrotechnicalstandardization.InternationalStandardsaredraftedinaccordancewiththerulesgivenintheISO/IECDirectives,Part2.ThemaintaskoftechnicalcommitteesistoprepareInternationalStandards.DraftInternationalStandardsadoptedbythetechnicalcommitteesarecirculatedtothememberbodiesforvoting.PublicationasanInternationalStandardrequiresapprovalbyatleast75%ofthememberbodiescastingavote.Attentionisdrawntothepossibilitythatsomeoftheelementsofthisdocumentmaybethesubjectofpatentrights.ISOshallnotbeheldresponsibleforidentifyinganyorallsuchpatentrights.ISO11898-5waspreparedbyTechnicalCommitteeISO/TC22,Roadvehicles,SubcommitteeSC3,Electricalandelectronicequipment.ISO11898consistsofthefollowingparts,underthegeneraltitleRoadvehicles-Controllerareanetwork(CAN):
ivPart1:
DatalinklayerandphysicalsignallingPart2:
High-speedmediumaccessunitPart3:
Low-speed,fault-tolerant,medium-dependentinterfacePart4:
Time-triggeredcommunicationPart5:
High-speedmediumaccessunitwithlow-powermodeISO2007-AllrightsreservedISO11898-5:
2007(E)IntroductionISO11898wasfirstpublishedasonedocumentin1993.ItcoveredtheCANdatalinklayeraswellasthehigh-speedphysicallayer.InthereviewedandrestructuredISO11898series:
Part1describesthedatalinklayerincludingthelogicallinkcontrol(LLC)sublayerandthemediumaccesscontrol(MAC)sublayeraswellasthephysicalsignalling(PLS)sublayer;Part2definesthehigh-speedmediumaccessunit(MAU);Part3definesthelow-speedfault-tolerantmediumaccessunit(MAU);Part4definesthetime-triggeredcommunication;Part5definesthepowermodesofthehigh-speedmediumaccessunit(MAU).ISO11898-1andISO11898-2havebeencancelledandreplacedISO11898:
1993.ISO2007-AllrightsreservedVINTERNATIONALSTANDARDISO11898-5:
2007(E)Roadvehicles-Controllerareanetwork(CAN)-Part5:
High-speedmediumaccessunitwithlow-powermode1ScopeThispartofISO11898specifiestheCANphysicallayerfortransmissionratesupto1Mbit/sforusewithinroadvehicles.ItdescribesthemediumaccessunitfunctionsaswellassomemediumdependentinterfacefeaturesaccordingtoISO/IEC8802-2.ThispartofISO11898representsanextensionofISO11898-2,dealingwithnewfunctionalityforsystemsrequiringlow-powerconsumptionfeatureswhilethereisnoactivebuscommunication.PhysicallayerimplementationsaccordingtothispartofISO11898arecompliantwithallparametersofISO11898-2,butaredefineddifferentlywithinthispartofISO11898.ImplementationsaccordingtothispartofISO11898andISO11898-2areinteroperableandcanbeusedatthesametimewithinonenetwork.2NormativereferencesThefollowingreferenceddocumentsareindispensablefortheapplicationofthisdocument.Fordatedreferences,onlytheeditioncitedapplies.Forundatedreferences,thelatesteditionofthereferenceddocument(includinganyamendments)applies.ISO7637-3,Roadvehicles-Electricaldisturbancesfromconductionandcoupling-Part3:
ElectricaltransienttransmissionbycapacitiveandinductivecouplingvialinesotherthansupplylinesISO11898-2:
2003,Roadvehicles-Controllerareanetwork(CAN)-Part2:
High-speedmediumaccessunit3TermsanddefinitionsForthepurposesofthisdocument,thetermsanddefinitionsgiveninISO11898-2andthefollowingapply.3.1vcc(CANnode)supplyvoltageofthephysicallayerusedforthebusreceiver,transmitterandoptionalsplitterminationvoltageVsplitduringnormalmodeNOTETypicalvoltageofVCCis5V.3.2splitterminationvoltageVsplit(CANnode)outputvoltageofsplitterminationsupportoutputrelativetogroundsignalofthemodule(GND)ISO2007-Allrightsreserved1ISO11898-5:
2007(E)3.3propagationtimetProp(CANnode)signalpropagationtimemeasuredfromanedgeattransmitdata(TXD)inputtothecorrespondingedgeonreceivedata(RXD)outputoftheMAU3.4wake-upfiltertimetwake(CANnode)durationofadominantsignalonthebuslinesCAN_HandCAN_Lforforcingawake-uptotheCANNODE3.5wake-uppattern(CANnode)oneormultipleconsecutivedominantbuslevelsforatleasttwake,eachseparatedbyarecessivebuslevelNOTEFigureswithinthispartofISO11898areusingarrowsasfollowing:
voltages+-;currentsflowingfromthepositivetothenegativepole.4SymbolsandabbreviatedtermsForthepurposesofthisdocument,thesymbolsandabbreviatedtermsgiveninISO11898-2apply.5Functionaldescriptionofmediumaccessunit(MAU)withlow-powermode5.1GeneralThefollowingdescriptionisvalidforatwo-wiredifferentialbus.Thevaluesofthevoltagelevels,theresistancesandthecapacitancesaswellastheterminationnetworkaredescribedinClause7.5.2Physicalmediumattachmentsublayerspecification5.2.1GeneralAsshowninFigure1thebuslineisterminatedbyterminationnetworkAandterminationnetworkB.Theseterminationsareintendedtosuppressreflections.Besidesthisreflection-optimizedterminationstructure,centralizedsingleterminationsarepossibleatlimitedbitratesandtopologies.-Q)Cl0VdiffCroQ)V(optional)Splitfloating-RecessiveDominantRecessiveTime,tKey1normalmode2low-powermode3simplifiedtransceiverbiasimplementationFigure3-Physicalbitrepresentationandsimplifiedbiasimplementation5.2.4Wake-upoutoflow-powermodeDuringlow-poweroperation,aphysicallayeroptionallyshallmonitorthebuslinesCAN_HandCAN_Ltorwake-upevents.Implementationssupportingthisfeatureshallmakeuseofadifferentialbuscomparatormonitoringthebusline.Abuswake-upshallbeperformeditthebusshowsoneormultipleconsecutivedominantbuslevelsforatleasttwakeeachseparatedbyarecessivebuslevel.5.2.5SystemswithunpowerednodesInordertoallowundisturbedCANcommunicationinsystems,whichhaveacoupleofnodesintentionallyunpowered(e.g.ignitionkeycontrolledmodules),whileothernodescontinuetocommunicatenormally,itisimportantthattheseunpowerednodesaffectthebuslevelsaslittleaspossible.Thisrequiresthattransceivers,whicharetemporarilyunpowered,showalowestpossibleleakagecurrenttothebuslinesinsidethestillcommunicatingsystem.Thelowertheleakagecurrentintheunpoweredcase,thebetterthesystemperformanceinthepermanentlysuppliedpartofthenetwork.Dependingonthetargetapplication(permanentlysuppliedortemporarilyunsupplied)themaximumleakageparameteraccordingtoTable4canbetolerated(permanentlysuppliednodes)or
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- 正版标准 ISO 11898-5-2007 正版 标准 11898 2007