PMBus_Specification_Part_II_Rev_1-2_20100906

Filename:PMBus_SpecificationLastsaved:06Sep2010,15:18PowerSysteSPartII–ww©2010SystemManagn_Part_II_Rev_1-2_20100906.docxPMBus™emManagementPrSpecificationCommandLanguaRevision1.26September2010ww.powerSIG.orggementInterfaceForum,Inc.–AllRightsRrotocolgeeservedPMBusPowerSystemMgtProtocolSpecification–PartII–Revision1.2©2010SystemManagementInterfaceForum,Inc.Page2of106AllRightsReservedDISCLAIMERThisspecificationisprovided“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/Artesyn1.26Sep2010ThirdpublicreleaseRobertV.WhiteEmbeddedPowerLabsPMBusPowerSystemMgtProtocolSpecification–PartII–Revision1.2©2010SystemManagementInterfaceForum,Inc.Page3of106AllRightsReservedTableOfContents1.Introduction............................................................................................................................................91.1.SpecificationScope........................................................................................................................91.1.1.SpecificationStructure............................................................................................................91.1.2.WhatIsIncluded......................................................................................................................91.1.3.WhatIsNotIncludedInthePMBusSpecification...................................................................91.2.SpecificationChangesSinceTheLastRevision............................................................................91.3.WhereToSendFeedbackAndComments....................................................................................92.RelatedDocuments...............................................................................................................................92.1.Scope..............................................................................................................................................92.2.ApplicableDocuments....................................................................................................................92.3.ReferenceDocuments..................................................................................................................103.ReferenceInformation.........................................................................................................................103.1.SignalandParameterNames......................................................................................................103.2.NumericalFormats.......................................................................................................................103.2.1.DecimalNumbers..................................................................................................................103.2.2.BinaryNumbers.....................................................................................................................103.2.3.HexadecimalNumbers..........................................................................................................103.2.4.Examples...............................................................................................................................103.3.BitAndByteOrder........................................................................................................................113.4.BitAndByteIllustrations...............................................................................................................113.5.Abbreviations,AcronymsAndDefinitions.....................................................................................134.AddressingAndGrouping....................................................................................................................154.1.DeviceAddresses.........................................................................................................................154.2.GeneralCallAddress(GlobalBroadcast)....................................................................................154.3.SendingCommandsToAGroup.................................................................................................165.Commands....................................................