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Utilities DSP Software

These functions are often used in program development. Click on "asm code"# or "C code" of the desired function to view a data sheet (# shorthand for TMS320C5000 DSP assembler code). Some further building block routines are listed after the table.

Function Code type (click for data sheet) Processor MIPS1 Processor Data Mem (words) Processor Prog Mem1 Features Sample rate (kHz)
FFT time to frequency asm code 87972 cycles 768 0.29kwords Programmable span Any
C code 247752 cycles 768 1.0kbytes
Gaussian Noise Generator asm code 0.45 2xN 0.15kwords 6x sigma excursion
 Any
C code 0.71 2xN 0.4kbytes
TI C5000 DSP Code Converter asm code - - - 'C2x/'C2xx/'C5x -> 'C54x
 -

1 with asm code, MIPS and ProgMem (in 16-bit words) values are from TMS320C54x DSP assembling
1 with C code, MIPS and ProgMem (in 8-bit bytes) values are from TMS320C55x DSP compiling
1 MIPS at 8.0kHz sample rate
2 for 256-point FFT with real-only samples & pre-stored twiddle factors - "MIPS" figures are actually cycles

Other routines available in C5000 assembler or in C include:

  • Call progress & AT command routines
  • phase-to-cos,sin conversion
  • 8.0kHz<->9.6kHz sample rate conversion
  • dBs<->linear conversion
  • x,y to magnitude
  • square-root (32bits -> 16bits)
  • IIR biquad
  • random number generation
  • PCM A-/µ-law encode/decode
  • RMS measurement
  • frequency measurement
  • dBs-to-linear and linear-to-dBs conversion

Please enquire if interested.

 
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