PMBus_Specification_Part_I_Rev_1-2_20100906

Filename:PMBus_SpecificationLastsaved:06Sep2010,15:27PowerSysteSPartI–GTransportAww©2010SystemManagn_Part_I_Rev_1-2_20100906.docxPMBus™emManagementPrSpecificationGeneralRequiremenAndElectricalInterRevision1.2X6September2010ww.powerSIG.orggementInterfaceForum,Inc.–AllRightsRrotocolnts,rfaceeservedPMBus™PowerSystemMgtProtocolSpecification–PartI–Revision1.2X©2010SystemManagementInterfaceForum,Inc.Page2of19AllRightsReservedDISCLAIMERThisspecificationisprovided“asis”withnowarrantieswhatsoever,whetherexpress,impliedorstatutory,includingbutnotlimitedtoanywarrantyofmerchantability,noninfringement,orfitnessforanyparticularpurpose,oranywarrantyotherwisearisingoutofanyproposal,specificationorsample.Innoeventwillanyspecificationco-ownerbeliabletoanyotherpartyforanylossofprofits,lossofuse,incidental,consequential,indirect,orspecialdamagesarisingoutofthisspecification,whetherornotsuchpartyhadadvancenoticeofthepossibilityofsuchdamages.Further,nowarrantyorrepresentationismadeorimpliedrelativetofreedomfrominfringementofanythirdpartypatentswhenpracticingthespecification.Otherproductandcorporatenamesmaybetrademarksofothercompaniesandareusedonlyforexplanationandtotheowner’sbenefit,withoutintenttoinfringe.REVISIONHISTORYREVDATEDESCRIPTIONEDITEDBY1.028Mar2005Firstpublicrelease.RobertV.WhiteArtesynTechnologies1.15Feb2007Secondpublicrelease.RobertV.WhiteAstec/Artesyn1.2X6Sep2010ThirdpublicreleaseRobertV.WhiteEmbeddedPowerLabsPMBus™PowerSystemMgtProtocolSpecification–PartI–Revision1.2X©2010SystemManagementInterfaceForum,Inc.Page3of19AllRightsReservedTableOfContents1Introduction............................................................................................................................................51.1SpecificationScope........................................................................................................................51.1.1SpecificationStructure............................................................................................................51.1.2WhatIsIncluded......................................................................................................................51.1.3WhatIsNotIncludedInThePMBusSpecification..................................................................51.2SpecificationChangesSinceTheLastRevision............................................................................51.3WhereToSendFeedbackAndComments....................................................................................52RelatedDocuments...............................................................................................................................52.1Scope..............................................................................................................................................52.2ApplicableDocuments....................................................................................................................52.3ReferenceDocuments....................................................................................................................63ReferenceInformation...........................................................................................................................63.1SignalandParameterNames........................................................................................................63.2NumericalFormats.........................................................................................................................63.2.1DecimalNumbers....................................................................................................................63.2.2BinaryNumbers.......................................................................................................................63.2.3HexadecimalNumbers............................................................................................................63.2.4Examples.................................................................................................................................63.3ByteAndBitOrder..........................................................................................................................73.4BitAndByteIllustrations.................................................................................................................73.5Abbreviations,AcronymsAndDefinitions.......................................................................................84GeneralRequirements.........................................................................................................................114.1Compliance...................................................................................................................................114.2UnassistedStartUpAndOperation.............................................................................................115Transport.............................................................................................................................................