ADI ADSP-BF70x Blackfin处理器系列开发方案

ADIADSP－BF70xBlackfin处理器系列开发方案关键字：汽车电子,视频/图像分析,工业控制,马达控制,仪器仪表;电源控制ADI公司的ADSP-BF70xBlackfin处理器系列采用双MAC16位最新的处理引擎,正交RISC类微处理器指令集,在单指令架构中采用单指令多数据(SIMD)多媒体功能,Blackfin+核能工作高达400MHz,每周妻支持双16位或单32位MAC,其低功耗性能可应用在汽车电子,视频/图像分析,工业控制,马达控制,仪器仪表,电源控制和生物计量.本文介绍了ADSP-BF70xBlackfin处理器系列主要特性,框图和Blackfin+处理核框图,以及评估板ADSP-BF707EZ-KITLite主要特性,框图,电路图,材料清单和PCB布局设计图.TheADSP-BF70xprocessorisamemberoftheBlackfinfamilyofproducts.TheBlackfinprocessorcombinesadual-MAC16-bitstate-of-the-artsignalprocessingengine,theadvantagesofaclean,orthogonalRISC-likemicroprocessorinstructionset,andsingle-instruction,multiple-data(SIMD)multimediacapabilitiesintoasingleinstruction-setarchitecture.NewenhancementstotheBlackfin+coreadd32-bitMACand16-bitcomplexMACsupport,cacheenhancements,branchpredictionandotherinstructionsetimprovements—allwhilemaintaininginstructionsetcompatibilitytopreviousBlackfinproducts.Theprocessoroffersperformanceupto400MHz,aswellaslowstaticpowerconsumption.Producedwithalow-powerandlow-voltagedesignmethodology,theyprovideworld-classpowermanagementandperformance.Byintegratingarichsetofindustry-leadingsystemperipheralsandmemory(showninTable1),theBlackfinprocessoristheplatformofchoicefornext-generationapplicationsthatrequireRISC-likeprogrammability,multimediasupport,andleading-edgesignalprocessinginoneintegratedpackage.Theseapplicationsspanawidearrayofmarkets,fromautomotivesystemstoembeddedindustrial,instrumentation,video/imageanalysis,biometricandpower/motorcontrolapplications.ADSP-BF70xBlackfin处理器系列主要特性:Blackfin+corewithupto400MHzperformanceDual16-bitorsingle32-bitMACsupportpercycle16-bitcomplexMACandmanyotherinstructionsetenhancementsInstructionsetcompatiblewithpreviousBlackfinproductsLow-costpackagingRoHScompliant88-LeadLFCSP(QFN)package(12mm×12mm),184-BallCSP_BGApackage(12mm×12mm×0.8mmpitch),RoHScompliantLowsystempowerwith100mWtotaldevicepowerat400MHz(0.25mW/MHz)at25°CTJUNCTIONMEMORY136KBL1SRAMwithmulti-parity-bitprotection(64KBinstruction,64KBdata,8KBscratchpad)Largeon-chipL2SRAMwithECCprotection256KB,512KB,1MBvariantsOn-chipL2ROM(512KB)L3interface(CSP_BGAonly)optimizedforlowestsystempower,providing16-bitinterfacetoDDR2orLPDDRSDRAMdevices(upto200MHz)Securityandone-time-programmablememoryCryptohardwareacceleratorsFastsecurebootforIPprotectionmemDMAencryption/decryptionforfastrun-timesecurity图1.ADSP-BF70xBlackfin处理器系列框图BLACKFIN+PROCESSORCOREAsshowninFigure1,theprocessorintegratesaBlackfin+processorcore.Thecore,showninFigure2,containstwo16-bitmultipliers,one32-bitmultiplier,two40-bitaccumulators(whichmaybeusedtogetherasa72-bitaccumulator),two40-bitALUs,one72-bitALU,fourvideoALUs,anda40-bitshifter.Thecomputationunitsprocess8-,16-,or32-bitdatafromtheregisterfile.Thecomputeregisterfilecontainseight32-bitregisters.Whenperformingcomputeoperationson16-bitoperanddata,theregisterfileoperatesas16independent16-bitregisters.Alloperandsforcomputeoperationscomefromthemultiportedregisterfileandinstructionconstantfields.Thecorecanperformtwo16-bitby16-bitmultiply-accumu-latesorone32-bitmultiply-accumulateineachcycle.Signedandunsignedformats,rounding,saturation,andcomplexmul-tipliesaresupported.TheALUsperformatraditionalsetofarithmeticandlogicaloperationson16-bitor32-bitdata.Inaddition,manyspecialinstructionsareincludedtoacceleratevarioussignalprocessingtasks.Theseincludebitoperati16-bitand8-bitaddswithclipping,8-bitaverageoperations,and8-bitsubtract/absolutevalue/accumulate(SAA)operations.Alsoprovidedarethecompare/selectandvectorsearchinstructions.Forcertaininstructions,two16-bitALUoperationscanbeper-formedsimultaneouslyonregisterpairs(a16-bithighhalfand16-bitlowhalfofacomputeregister).IfasecondALUisused,quad16-bitoperationsarepossible.The40-bitshiftercanperformshiftsandrotatesandisusedtosupportnormalization,fieldextract,andfielddepositinstructionsonssuchasfieldextractandpop-ulationcount,divideprimitives,saturationandrounding,andsign/exponentdetection.Thesetofvideoinstructionsincludebytealignmentandpackingoperations,图2.ADSP-BF70xBlackfin+处理器核框图评估板ADSP-BF707EZ-KITLiteThankyouforpurchasingtheADSP-BF707EZ-KITLite®,AnalogDevices,Inc.low-costevaluationsystemfortheADSP-BF70xBlackfin®processors.TheADSP-BF707processorisamemberoftheBlackfinfamilyofproducts.Blackfinprocessorscombineadual-MACstate-of-the-artsignalprocessingengine,theadvantagesofaclean,orthogonalRISC-likemicroprocessorinstructionset,andsingle-instruction,multiple-data(SIMD)multimediacapabilitiesintoasingleinstruction-setarchitecture.NewenhancementstotheBlackfin+™coreadd32-bitMACand16-bitcomplexMACsupport,cacheenhancements,branchpredictionandotherinstructionsetimprovements—allwhilemaintaininginstructionsetcompatibilitytopreviousBlackfinproducts.TheEZ-KITLiteisshippedwithallofthenecessaryhardware—youcanstarttheevaluationimmediately.Thepackagecontainsthestandaloneevaluationboard,CE-approvedpowersupply,andUSBcable.TheEZ-KITLiteversionshipswithanICE-1000emulator,whiletheEZ-Board®versionissupportedbytheICE-1000orICE-2000emulator.ExpansionInterfaceIIIisprovidedforconnectingacameraoraudioextender