Manuals / Texas Instruments / Photography / Security Camera

Texas Instruments TMS320C64X manual Cycles Nx40 Nr+ Nx=40 Nxnr/8 + 2nr + Codesize Bytes

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 35

DSP_autocor_rA8

Benchmarks	Cycles	nx<40:	6*nr+ 20
		nx>=40:	nxnr/8 + 2nr + 20
	Codesize	304 bytes

C64x+ DSPLIB Reference

4-7

Page 34 Page 36

Image 35

Texas Instruments TMS320C64X manual Cycles Nx40 Nr+ Nx=40 Nx*nr/8 + 2*nr + Codesize Bytes

Page 34 Page 36

Related pages Troubleshooting for Samsung HLM437W Technical Specifications for Zanussi ZERT 6646 Imaging error messages for Xerox 4650 Main Oven Cooking Chart for Cannon 10695G PowerSaver When used as a Network monitor for Samsung 700TSN-2 Installation for Rangemaster 110 Basic Spare Parts List for Stovax 7017 Remote Control Operation/Code List for Panasonic TC 32LX700 Installation and Use for JVC MP-XP731GB USING YOUR DISHWASHER for Whirlpool DU912 8051563 Comment connecter mon Home Cinéma Samsung Bluetooth?

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 FFT Introduction to the TI C64x+ Dsplib Introduction Features and Benefits Installing and Using Dsplib Setenv Cdir installdir/libinstalldir/include $CDIR How to Install Dsplib −1. Dsplib Data Types Using Dsplib Calling a Dsplib Function From C Interrupt Behavior of Dsplib Functions How to Rebuild DsplibPage Dsplib Function Tables −1. Argument Conventions Arguments and Conventions Used Dsplib Functions −4. FFT Dsplib Function Tables−2. Adaptive Filtering −3. Correlation −5. Filtering and Convolution −7. Matrix −6. Math −9. Obsolete Functions −8. Miscellaneous −10. Functions Optimized in the C64x+ Dsplib Differences Between the C64x and C64x+ DSPLIBs DSPfircplxhM4X4 DSPblkeswap16 DSPblkeswap32 DSPblkmove Dsplib Reference DSPfirlms2 Adaptive Filtering Benchmarks 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 Complex Forward Mixed Radix 16 x 16-bit FFT With Rounding DSPfft16x16r DSPfft16x16r Is equivalent to FFT with one function call invocation as shown below DSPfft16x16r DSPfft16x16r DSPfft16x16r DSPfft16x16r Special Requirements Bank Conflicts No bank conflicts occur Complex Forward Mixed Radix 16 x 32-bit FFT With Rounding DSPfft16x32 DSPfft16x32 Complex Forward Mixed Radix 32 x 32-bit FFT With Rounding DSPfft32x32 DSPfft32x32 Complex Forward Mixed Radix 32 x 32-bit FFT With Scaling DSPfft32x32s Preventing overflow Complex Inverse Mixed Radix 16 x 16-bit FFT With Rounding DSPifft16x16 DSPifft16x16 DSPifft16x16imre DSPifft16x16imre Complex Inverse Mixed Radix 16 x 32-bit FFT With Rounding DSPifft16x32 DSPifft16x32 Complex Inverse Mixed Radix 32 x 32-bit FFT With Rounding DSPifft32x32 DSPifft32x32 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 FIR Filter DSPfirgen A single clock cycle DSPfirgenhM17rA8X8 Cycles 3*ceilnh/4*nr/4+39 DSPfirr4 FIR Filter when the number of coefficients is a multiple Values in a single clock cycle DSPfirr8 Output samples DSPfirr8hM16rM8A8X8 Special Requirements Symmetric FIR Filter DSPfirsym Inner loop is unrolled eight times IIR With 5 Coefficients DSPiir 4 into the r1 array All-Pole IIR Lattice Filter DSPiirlat Cycles Nk + 7 * nx + Without bank conflicts Codesize Bytes Vector Dot Product and Square MathDSPdotpsqr Cycles Nx/2 + Codesize 128 Vector Dot Product DSPdotprod Cycles Nx / 4 + Codesize Bytes Maximum Value of Vector DSPmaxval DSPmaxidx Index of Maximum Element of Vector Global maximum is then found from the list of maximums DSPminval Minimum Value of Vector Bit Vector Multiply DSPmul32 Intermediate results Bit Vector Negate DSPneg32 DSPrecip16 Bit Reciprocal Special Requirements None Implementation Notes DSPvecsumsq Sum of Squares DSPwvec Weighted Vector Sum DSPmatmul MatrixMatrix Multiplication DSPmatmul DSPmattrans Matrix Transpose Block Exponent Implementation MiscellaneousDSPbexp Cycles Nx/2 + Codesize Bytes DSPblkeswap16 Endian-Swap a Block of 16-Bit Values DSPblkeswap16 Operation occurs in-place DSPblkeswap32 Endian-Swap a Block of 32-Bit Values DSPblkeswap32 A multiple of 4 words must be processed DSPblkeswap64 Endian-Swap a Block of 64-Bit Values DSPblkeswap64 Cycles Nx/2 + Codesize Bytes Block Move Overlapping DSPblkmove DSPfltoq15 Float to Q15 Conversion Cycles Nx/2 + Codesize Bytes DSPminerror Minimum Energy Error Search Inner loop is completely unrolled DSPq15tofl Q15 to Float Conversion Complex Bit-Reverse Obsolete FunctionsDSPbitrevcplx DSPbitrevcplx If txi3 = xj3 Xj3 = Complex Forward FFT radix DSPradix2 Bank Conflicts See Benchmarks DSPr4fft DSPr4fft X2 * i3 + 1 = s2 * co3−r2 * si315 Ie = Complex Forward FFT With Digital Reversal DSPfft DSPfft 100 C64x+ Dsplib Reference 101 102 C64x+ Dsplib Reference 103 104 C64x+ Dsplib Reference 105 Loads input x and coefficient w as double words DSPfft16x16t Complex Forward Mixed Radix 16- x 16-Bit FFT With Truncation 108 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−4. Q.31 High Memory Location Bit Fields Table A−3. Q.31 Low Memory Location Bit Fields Software Updates and Customer Support Dsplib Customer Support Dsplib Software Updates Glossary 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

Top Page Image Contents