Signal Processing Examples Using TMS320C64x Digital Signal Processing Library (DSPLIB)

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1、ApplicationReportSPRA884A-September2003SignalProcessingExamplesUsingTMS320C64xDigitalSignalProcessingLibrary(DSPLIB)ChrisChungTMS320C6000SoftwareApplicationsOliverSohmABSTRACTTheTMS320C64xdigitalsignalprocessinglibrary(DSPLIB)providesasetofC-callable,asse

2、mbly-optimizedfunctionscommonlyusedinsignalprocessingapplications,e.g.,filteringandtransform.TheDSPLIBincludesseveralfunctionsforeachprocessingcategory,basedontheinputparameterconditions,toprovideparameter-specificoptimalperformance.Therefore,itisimportant

3、tounderstandthedifferencesandrequirementsofthefunctionsineachcategory.Thisapplicationreportpresentstheusageandperformanceofthreekeysignalprocessingcategories,i.e.,finiteimpulseresponse(FIR),infiniteimpulseresponse(IIR),andfastFouriertransform(FFT),tohelpus

4、ersbetterutilizeDSPLIBintheirsystemdevelopment.Contents1Introduction.........................................................................22Benchmarking.......................................................................32.1Emulation/SimulationSetup.

5、.......................................................32.2CycleCountMeasurement.........................................................52.3ExampleScenariosandExpectedPerformance......................................62.3.1Scenario1:DatainL1D..............

6、.......................................72.3.2Scenario2:DatainL2SRAM................................................72.4DataAlignment...................................................................83Examples...............................................

7、............................83.1FiniteImpulseResponse(FIR)Filter................................................83.2InfiniteImpulseResponse(IIR)Filter...............................................123.3LatticeInfiniteImpulseResponse(IIR)Filter.............

8、...........................143.4FastFourierTransform(FFT).....................................................164References.........................................................................19ListofFigu