readme_dft32_opt.txt

基于TS201 32-bit floating point DFT routine

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     				Floating point DFT

Analog Devices, Inc.
DSP Division
Three Technology Way
P.O. Box 9106
Norwood, MA 02062


Files contained in this directory:

ADSP-TS101.ldf
ADSP-TS101_dft32.dpj	VisualDSP project file
ADSP-TS201_dft32.dpj	VisualDSP project file
dft32.dpj		VisualDSP project file
dft.asm			Floating point DFT
cache_macros.h		TS201S macro file which includes macros to enable the cache
MAKEWAVESC.C		Test Signal Generator for Floating Point Data
makewavesc.exe
sin64.dat
test64.dat
Readme_dft32_opt.txt	This README file

 
TigerSHARC real DFT, Number of points = N must be a multiple of 4

  Cycle counts  |                   	      |  
                |  Formula             Cycles |  
  --------------+-----------------------------+
  Initialization|    12                  12   |   
  Kernel code   |  (N/4)*(2*N+10)+8    2216   | 
  Termination   |     1                   1   | 


  Memory usage      |       Bytes
  ------------------+-------------
  Initialization    |         48
  Kernel code       |        128
  Termination       |          8
  ------------------+-------------
  Constant Data     |        512
  Non-constant Data |        768 

  The example waveform has a sum of 5 sinewaves.