SAB82538H-10中文资料

ICsforCommunicationsEnhancedSerialCommunicationControllerwith8ChannelsESCC8SAB82538SAF82538Version2.2User’sManual03.95Edition03.95ThiseditionwasrealizedusingthesoftwaresystemFrameMaker‚.PublishedbySiemensAG,BereichHalbleiter,Marketing-Kommunikation,Balanstraße73,81541München©SiemensAG1995.AllRightsReserved.Attentionplease!Asfaraspatentsorotherrightsofthirdpar-tiesareconcerned,liabilityisonlyassumedforcomponents,notforapplications,pro-cessesandcircuitsimplementedwithincom-ponentsorassemblies.Theinformationdescribesthetypeofcompo-nentandshallnotbeconsideredasassuredcharacteristics.Termsofdeliveryandrightstochangedesignreserved.Forquestionsontechnology,deliveryandpricespleasecontacttheSemiconductorGroupOfficesinGermanyortheSiemensCompaniesandRepresentativesworldwide(seeaddresslist).Duetotechnicalrequirementscomponentsmaycontaindangeroussubstances.Forin-formationonthetypesinquestionpleasecontactyournearestSiemensOffice,Semi-conductorGroup.SiemensAGisanapprovedCECCmanufac-turer.PackingPleaseusetherecyclingoperatorsknowntoyou.Wecanalsohelpyou–getintouchwithyournearestsalesoffice.Byagreementwewilltakepackingmaterialback,ifitissorted.Youmustbearthecostsoftransport.Forpackingmaterialthatisreturnedtousun-sortedorwhichwearenotobligedtoaccept,weshallhavetoinvoiceyouforanycostsin-curred.Componentsusedinlife-supportdevicesorsystemsmustbeexpresslyauthorizedforsuchpurpose!Criticalcomponents1oftheSemiconductorGroupofSiemensAG,mayonlybeusedinlife-supportdevicesorsystems2withtheex-presswrittenapprovaloftheSemiconductorGroupofSiemensAG.1Acriticalcomponentisacomponentusedinalife-supportdeviceorsystemwhosefailurecanreasonablybeexpectedtocausethefailureofthatlife-supportdeviceorsystem,ortoaffectitssafetyoreffec-tivenessofthatdeviceorsystem.2Lifesupportdevicesorsystemsarein-tended(a)tobeimplantedinthehumanbody,or(b)tosupportand/ormaintainandsustainhumanlife.Iftheyfail,itisrea-sonabletoassumethatthehealthoftheusermaybeendangered.DataClassificationMaximumRatingsMaximumratingsareabsoluteratings;exceedingonlyoneofthesevaluesmaycauseirreversibledamagetotheintegratedcircuit.CharacteristicsThelistedcharacteristicsareensuredovertheoperatingrangeoftheintegratedcircuit.Typicalcharacteristicsspecifymeanvaluesexpectedovertheproductionspread.Ifnototherwisespecified,typicalcharacteristicsapplyatTA=25˚Candthegivensupplyvoltage.OperatingRangeIntheoperatingrangethefunctionsgiveninthecircuitdescriptionarefulfilled.FordetailedtechnicalinformationaboutProcessingGuidelinesandQualityAssuranceforICs,seeourProductOverview.SAB82538SAF82538RevisionHistory:CurrentVersion:03.95PreviousVersion:User’sManual01.94Page(inVersion01.94)Page(innewversionSubjects(changessincelastrevision)1111VDDandVSSpinconfiguration1313RD/DSDescription1414RESpinnumber1919DACKxDescription2222VDDandVSSnumbers5454TransparentMode1,AddressRecognition5858TransmitterInterrupts,Figure216161TransmitterInterrupts,Figures23/246565TransmitterInterrupts,Figures28/298686NoteindescriptionofClockMode58686CD-signal,Figure35110111InterruptDrivenReceptionSequence,Figure47113114CCR4RegisterAddresses126127RHCRRegisterDescription127129XBCRegisterDescription145147/148XMRInterruptDescription157159RFRDCommandDescription164166RBCRegisterDescription178181TCDInterruptDescription190194RFRDCommandDescription198201RBCRegisterDescription211214TCDInterruptDescription228231Timingstp(DRT),tSU(IE)236239TimingtSU(IE)238241Timingtp(PV-INT)241244NumberofTimingtC(XC)––MinorMisprintsSemiconductorGroup4GeneralInformationIntroduction.........................................................71GeneralFeatures..............................................81.1PinDefinitionsandFunction.....................................111.2LogicSymbol.................................................221.3FunctionalBlockDiagram.......................................231.4SystemIntegration.............................................251.4.1GeneralAspects..............................................251.4.2Environment..................................................261.4.2.1ESCC8withSAB80188Microprocessor............................261.4.2.2ESCC8with80386............................................271.4.2.3ESCC8withMC68020,68030...................................281.4.2.4InterruptCascading............................................292FunctionalDescription........................................332.1General.....................................................332.2MicroprocessorInterface........................................362.2.1RegisterSet..................................................362.2.2DataTransferModes...........................................382.2.3InterruptInterface.............................................382.2.3.1PriorityStructure..............................................392.2.3.2InterruptPolling...............................................452.2.3.3VectoredInterruptStructure.....................................452.2.4DMAInterface................................................492.2.5FIFOStructure.........................