用于自動(dòng)駕駛的MIPI傳感器解決方案

11on?Sensorsty?Summary22?AutoindustryisbeingtransformedbyglobaltrendsectricvehiclesTightersafety?Automotiveindustryisnowleveragingthemobilesmartphonetechnologyancececommands33Market?Camera,LightDetectionandRanging,RadarandUltrasoundElectromagneticSpectrum?Carscanbeexpectedtohave8-12ElectromagneticSpectrum*44oughputLatencyoughputLatency?Predictable(nobuffering)55SISpecificationVersionv1SISpecificationVersionv1.1v1.2v1.3v2.0v2.1v3.0rameusingshortframesyncpacketslongdatastonevirtualchannelandaMIPIPHYv1.1v1.2v1.2v2.1v2.1v2.5v1.0v1.2v1.2v2.0nesperDorCPHYseriallink4ricuserdefinedlongpacketsdatatypesataTypesLongPacketDataTypesAdditionalRAWpixeldatatypes16,2016,2016,20,24Genericuser-defined,longpackets(4datatypes)DPCMcompression10-{8,6,7}-10and12-{8,7,6}-12DPCMcompression12-10-12VirtualchannelanddatatypelongpacketinterleavingMaximumnumberofvirtualchannels(D-/C-PHY)4/-4/-4/416/3216/3216/32LatencyReductionandTransportEfficiency(LRTE)LRTEwithEnd-of-Transmissionshortpackets(EoTp)LongpacketdatascramblingSmartRegionofInterest(SROI)SerialLinkUSL77ceHYvhPHYvidth88?MinimalOverhead?EnhancedPPALatestFeatures?ALPmodeAreasavingsduetoiedHSRX99CustomerUseCase:GEOGW5ADASVision?ADASusesCSI-2ascommunicationlinkbetweenthesensorsandCVPIr?GEOGW3andGEOGW4usedMixelMIPID-PHYwithRambusCSI-2controllernr?Scalableperformance?Optimizedgateandmemoryfootprint?Optimizedbandwidthmatchingfeaturesgrammableetcapable?CSI-2v3.0support?Licensedinover300CSI-2/DSI-2since2010SerDesControllerSoCFabricInterconnect(e.g.,NOC/AXIbus)?LatestspecificationadditionsenablenewperspectivesSensorSensorSubsystemSubsystemSensorSensorSubsystemSubsystemSubsystem/GPUSerDesControllerSoCFabricInterconnect(e.g.,NOC/AXIbus)fromPHYCSI2TXntrollerui_clkclkCSITXUserFIFOclkclkndCommandfromPHYCSI2TXntrollerui_clkclkCSITXUserFIFOclkclkndCommandAckCommandAcklReadEnableEnable?MainpurposeistohandlecaseswheretheUserApplicationclockdoesnotmatchtheCSI-2TxControllerClock.?TheUserFIFOalsohandlescasesofpixelbandwidthdifferences.(16pixelsperclockintoFIFO,8pixelsperclockout).?TheUserFIFOmustbelargeenoughtopreventanygapsorstallsinMIPIdataduring?TheUserApplicationinterfacesendspacketrequestsindicatingtypeandpixelcount.OncetheUserFIFOacknowledgesthepacketrequest,pixelreadenablerequestspixeldatauntilpixelcountisreached.eClockeClockApplicationudertualChannel?IfMIPIbandwidthislessthanUserFIFOinputbandwidth,thenclockcanbeslowerthanMIPIexampleztemClockckfromfromPHYCSITXntrollerApplicationclkcCSITXntrollerApplicationclkclkdCSI-2TXUserFIFOommandAckommandAckterfacetoPHY4*8bits/lanenablenable32bits/cyclebitwidebitwide44onalSafetyStandardASIL-CtoDingnhstCustomerUseCase:Renesas(IDT)AutomotiveSoC?Multi-channelsensorinterfacew/parallelchannelacquisitionCSITxLaneDPHY@2.5GBs/lanefetyRequirementsCQAutogradesupportingTjCrollersSafetyManual?FMEDA?DFMEA?CertificationhandledbySGS-TUEVdySafetyBISTForAutonomousDriving?Concentratesonfaultdetectionmechanisms?TestsECC,CRC,parityandothersafetymechanismsonpowerup?Canbetriggedbysystemsoftware/firmwareforperiodtestingduringoperation?Deepertestoferrordetectionmechanisms?AlwaysrunevenifBISTisnotdoneatahigherlevel?CreatesanearlyconfirmationthatIPisfunctional?Providesconfidencethatsafetymechanismsarefunctional?ProvidesaguaranteedlevelofsafetycoveragethatsystemBISTmaynotprovideBISTdoesnotreplaceSOCtesting:nschdogn?Parityprotectiononpixelsandpixelbuffers?MIPIprotocolheaderECCandpacketdataCRC?DataFormatting,PackingLogic,criticalstatemachines?Criticallogicblockscompareduplicateoutputsn?PacketnumberfieldinuserinterfaceFIFOstorespacketnumbers?Internalerrortriggeredonnonsequentialpacketnumbers?Area/PowerefficientwaytodetectfaultsthatstoptheControllerfrommakingforwardprogress?Followsasequenceofinputandoutputsignalsandchecksinternalsignals?IRQonerrorbacktothesystem?Supportsoftre