pc104规范

Version1.0—PageiPC/104-PlusSpecificationVersion1.0February1997PleaseNoteThisspecificationissubjecttochangewithoutnotice.Whileeveryefforthasbeenmadetoensuretheaccuracyofthematerialcontainedwithinthisdocument,thePC/104Consortiumshallundernocircumstancesbeliableforincidentalorconsequentialdamagesorrelatedexpensesresultingfromtheuseofthisspecification.Iferrorsarefound,pleasenotifythePC/104Consortium.PC/104andPC/104-PlusaretrademarksofthePC/104Consortium.Allothermarksarethepropertyoftheirrespectivecompanies.Copyright1992-97,PC/104ConsortiumVersion1.0—PageiiREVISIONHISTORYDraft0.7,November20,96-PreliminaryDrafta.FormattedtomeettherequirementsofthePC/104Consortium.b.ModifythecomponentrestrictionsacrossandtoeachsideofthePC/104connectors(threesides,.400“fromeachedge,4.35topclearance,.100bottomclearance).Draft0.8,December16,1996-Cleanupforreleasea.Correctgeneraltyposb.Correctwordreferenceerrorc.AddQuickSwitchpartnumberandclarifyMuxrequirementsd.ChangePCIONLYtoPCI-Onlyandaddnotee.Correctfigure4andFigure5errorsf.CorrecttypoinTable3Draft0.9,January10,1997-Cleanupforreleasea.CleanupminorgrammaticalerrorsVersion1.0,February1997-InitialReleasea.Grammaticalchangesandcleanupperreviewrecommendations.b.ChangeFootnote1onPage2toshowfuturesupportfortheM66EN(66MHzEnable)signal.c.AddsignalsPRSNT[1:2]*andCLKRUN*toFigure1toencompassallunusedPCIsignals.d.MovedtheMechanicalsectionaftertheElectricalsection.e.ClarifiedtheKEYpinusageforuniversalmodulesanddefinedthemasgroundconnections.f.Clarifiedpin1forthePC/104-PlusconnectorsonFigure4.g.AddedanexamplemanufacturerandpartNo.forthePCIconnector(Figure5)andShroud(Figure6).h.ModifiedFigure2,Table1,andsometextunderSection2.2toaddroutingrecommendationsforthePCIinterruptlinesINTA-INTD.Version1.0—PageiiiTABLEOFCONTENTS1.INTRODUCTION......................................................................................................................11.1SUMMARYOFKEYDIFFERENCESFROMPC/104SPECIFICATION:................................................11.2SUMMARYOFKEYDIFFERENCES(120-PINPCIANDPCILOCALBUSSPECIFICATION)...............11.3REFERENCES...............................................................................................................................12.PCISIGNALDEFINITION.....................................................................................................22.1PCIBUSSIGNALDESCRIPTION....................................................................................................32.1.1System.....................................................................................................................................32.1.2AddressandData....................................................................................................................32.1.3InterfaceControlPins.............................................................................................................32.1.4Arbitration(BusMastersOnly)..............................................................................................32.1.5ErrorReporting.......................................................................................................................32.1.6Interrupts.................................................................................................................................32.2SIGNALGROUPING......................................................................................................................43.ELECTRICALSPECIFICATION..........................................................................................53.1PC/104BUS................................................................................................................................53.2PCIBUS......................................................................................................................................53.2.1SignalDefinitions...................................................................................................................53.2.2SignalAssignments.................................................................................................................53.2.3PowerAndGroundPins.........................................................................................................53.2.4KeyLocations.........................................................................................................................53.2.5AC/DCSignalSpecifications.................................................................................................63.3MODULEPOWERREQUIREMENTS................................................................................................74.LEVELSOFCONFORMANCE..............................................................................................74.1PC/104-PLUSCOMPLIANT.......................................................................................................74.2PC/104-PLUSBUS-COMPATIBLE.............................................................................................74.3PC/104-PLUSPC