Manuals / Texas Instruments / Photography / Security Camera

Texas Instruments TMS320C64X manual

Models: TMS320C64X

1 169

Download 169 pages 59.58 Kb

<>

Install Minimum Energy Error Search Weight How to Dsplib Software Updates Features and Benefits Using Dsplib

Page 8

vi

Page 7 Page 9

Image 8

Texas Instruments TMS320C64X manual

Page 7 Page 9

Related pages Maintenance and TROUBLE-SHOOTING for Weslo 925 Specifications for Alcatel 7047D HOW to USE for Porter-Cable PCK4040SP Frequently asked questions for HP 4600 ＜When the unit is installed alone＞ for Toshiba E6580772 Parts List & Diagram M Control System for Harbor Freight Tools 67596 Additional information Language code list for Pioneer DVR-645H-S Error Messages for Kyocera FS-3700 Připojení ke kameře prostřednictvím programu iP installer for Samsung SNC-B2315P Accessories for Humminbird NS 10 How do I fill water in a Proctor Silex iron correctly?

Contents

Literature Number SPRUEB8 February Copyright 2006, Texas Instruments Incorporated Read This First Trademarks Contents Defines terms and abbreviations used in this book Tables Page Introduction Introduction to the TI C64x+ Dsplib FFTIntroduction Features and Benefits Installing and Using Dsplib How to Install Dsplib Setenv Cdir installdir/libinstalldir/include $CDIRUsing Dsplib −1. Dsplib Data TypesCalling a Dsplib Function From C How to Rebuild Dsplib Interrupt Behavior of Dsplib FunctionsPage Dsplib Function Tables Arguments and Conventions Used −1. Argument ConventionsDsplib Functions Dsplib Function Tables −2. Adaptive Filtering−3. Correlation −4. FFT−5. Filtering and Convolution −6. Math −7. Matrix−8. Miscellaneous −9. Obsolete FunctionsDifferences Between the C64x and C64x+ DSPLIBs −10. Functions Optimized in the C64x+ DsplibDSPfircplxhM4X4 DSPblkeswap16 DSPblkeswap32 DSPblkmove Dsplib Reference Adaptive Filtering DSPfirlms2Benchmarks AutoCorrelation CorrelationDSPautocor Cycles Nx40 Nr*nr/4 + Nx=40 Nx*nr/8 + 2*nr + Codesize Bytes DSPautocorrA8 AutoCorrelation Cycles Nx40 Nr+ Nx=40 Nx*nr/8 + 2*nr + Codesize Bytes Complex Forward Mixed Radix 16 x 16-bit FFT FFTDSPfft16x16 Implementation Notes Cycles Nx/8 + 19 * ceillog 4nx − 1 + 8*nx/8 + Codesize Bytes DSPfft16x16imre DSPfft16x16imre Cycles Nx/8 + 19 * ceillog4nx − 1 + 8*nx/8 + Codesize Bytes DSPfft16x16r Complex Forward Mixed Radix 16 x 16-bit FFT With RoundingDSPfft16x16r Is equivalent to FFT with one function call invocation as shown below DSPfft16x16r DSPfft16x16r DSPfft16x16r DSPfft16x16r Special Requirements Bank Conflicts No bank conflicts occur DSPfft16x32 Complex Forward Mixed Radix 16 x 32-bit FFT With RoundingDSPfft16x32 DSPfft32x32 Complex Forward Mixed Radix 32 x 32-bit FFT With RoundingDSPfft32x32 DSPfft32x32s Complex Forward Mixed Radix 32 x 32-bit FFT With ScalingPreventing overflow DSPifft16x16 Complex Inverse Mixed Radix 16 x 16-bit FFT With RoundingDSPifft16x16 DSPifft16x16imre DSPifft16x16imre DSPifft16x32 Complex Inverse Mixed Radix 16 x 32-bit FFT With RoundingDSPifft16x32 DSPifft32x32 Complex Inverse Mixed Radix 32 x 32-bit FFT With RoundingDSPifft32x32 Complex FIR Filter Filtering and ConvolutionDSPfircplx Both inner and outer loops are collapsed in one loop DSPfircplxhM4X4 Complex FIR Filter Interruptibility The code is fully interruptible DSPfirgen FIR FilterA single clock cycle DSPfirgenhM17rA8X8 Cycles 3*ceilnh/4*nr/4+39 FIR Filter when the number of coefficients is a multiple DSPfirr4Values in a single clock cycle DSPfirr8 Output samples DSPfirr8hM16rM8A8X8 Special Requirements DSPfirsym Symmetric FIR FilterInner loop is unrolled eight times DSPiir IIR With 5 Coefficients4 into the r1 array DSPiirlat All-Pole IIR Lattice FilterCycles Nk + 7 * nx + Without bank conflicts Codesize Bytes Vector Dot Product and Square MathDSPdotpsqr Cycles Nx/2 + Codesize 128 DSPdotprod Vector Dot ProductCycles Nx / 4 + Codesize Bytes DSPmaxval Maximum Value of VectorIndex of Maximum Element of Vector DSPmaxidxGlobal maximum is then found from the list of maximums Minimum Value of Vector DSPminvalDSPmul32 Bit Vector MultiplyIntermediate results DSPneg32 Bit Vector NegateBit Reciprocal DSPrecip16Special Requirements None Implementation Notes Sum of Squares DSPvecsumsqWeighted Vector Sum DSPwvecDSPmatmul MatrixMatrix Multiplication DSPmatmul Matrix Transpose DSPmattransBlock Exponent Implementation MiscellaneousDSPbexp Cycles Nx/2 + Codesize Bytes DSPblkeswap16 DSPblkeswap16 Endian-Swap a Block of 16-Bit ValuesOperation occurs in-place DSPblkeswap32 DSPblkeswap32 Endian-Swap a Block of 32-Bit ValuesA multiple of 4 words must be processed DSPblkeswap64 DSPblkeswap64 Endian-Swap a Block of 64-Bit ValuesCycles Nx/2 + Codesize Bytes DSPblkmove Block Move OverlappingFloat to Q15 Conversion DSPfltoq15Cycles Nx/2 + Codesize Bytes Minimum Energy Error Search DSPminerrorInner loop is completely unrolled Q15 to Float Conversion DSPq15toflComplex Bit-Reverse Obsolete FunctionsDSPbitrevcplx DSPbitrevcplx If txi3 = xj3 Xj3 = DSPradix2 Complex Forward FFT radixBank Conflicts See Benchmarks DSPr4fft DSPr4fft X2 * i3 + 1 = s2 * co3−r2 * si315 Ie = DSPfft Complex Forward FFT With Digital ReversalDSPfft 100 C64x+ Dsplib Reference 101 102 C64x+ Dsplib Reference 103 104 C64x+ Dsplib Reference 105 Loads input x and coefficient w as double words Complex Forward Mixed Radix 16- x 16-Bit FFT With Truncation DSPfft16x16t108 C64x+ Dsplib Reference 109 110 C64x+ Dsplib Reference 111 112 C64x+ Dsplib Reference 113 Y3 = y2 + int npoints L1 = norm + J0 = N0 = npoints1 Is either by 4, or 116 C64x+ Dsplib Reference 117 LogN C64x+ Dsplib Reference 119 + jY C + j S = XC + YS + j YC − XS Performance/Fractional Q Formats Performance Considerations Table A−2. Q.15 Bit Fields Fractional Q FormatsTable A−1. Q3.12 Bit Fields Table A−3. Q.31 Low Memory Location Bit Fields Table A−4. Q.31 High Memory Location Bit FieldsSoftware Updates and Customer Support Dsplib Software Updates Dsplib Customer SupportGlossary BSL See board support library CSL See chip support library DSPblkmove Block move FFT See fast fourier transform HPI See host port interface see also HPI module Law companding See compress and expand compand Glossary Rtos Real-time operating system Page Index Index Adaptive filtering Peripheral, defined C-8