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Discussion Groups | TMS320C54x | AM demodulation with TMS320C54x

Technical discussions about the TI C54x DSPs (including the c5401, c5402, c5402a, c5404, c5407, c5409, c5409a, c5410, c5410a, c5416, c5420, c5421, c5441, c549, c5470 and c5471).

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AM demodulation with TMS320C54x - c_19...@hotmail.com - May 27 11:06:47 2007

hi...
i'm planning to make a thesis about demodulate AM signal Digitally and i want to use TMS320C54.
and for filtering i want to use FIR method, can it be done?

thank you
please give me some input.
-chris(c1910)-

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Re: AM demodulation with TMS320C54x - Jeff Brower - May 27 23:09:24 2007

Chris-

> i'm planning to make a thesis about demodulate AM signal Digitally and i
> want to use TMS320C54. and for filtering i want to use FIR method, can
> it be done?

Like many other DSP devices, the C54x has special instructions for FIR filtering.  In
this document:

  http://focus.ti.com/lit/ug/spru429a/spru429a.pdf

look on pg 51, note the RTP instruction -- the single instruction that follows (next
line) is the innermost FIR filter multiply-accumulate operation, repeated for the
number of filter taps (coefficients).

This document also shows some C55x FIR filter code.

-Jeff

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