4096 point fft with hardware coprocessor

Ras

Other Parts Discussed in Thread: TMS320C5505, TMS320C5515, TMS320VC5505

Hi,

I would like to know, if there is any 4096 point complex fft available for 5515 devices. The user guide of dsp lib (dsplib 2.40.00) says it supports upto 1024 fft, but I think it is not built on hardware accelerator available for 5505/5515 devices.

So is there any library that supports 4096 point complex fft using hardware co-processor?

Thanking You,

Ras

over 13 years ago

0 Jrvanho over 13 years ago

Intellectual 730 points

I would recommending looking at SPRABB6A "FFT Implementation on the TMS320VC5505,TMS320C5505, and TMS320C5515 DSPs"

Section 8 "Computation of Large (Greater Than 1024-Point) FFTs on the VC5505 and C5505/15"

It even has an example for 2048 with the hardware FFT.

0 Ras over 13 years ago in reply to Jrvanho

Intellectual 675 points

Hi,

That was not much efficient, so I wrote it in asm.

Thanks,

Ras

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4096 point fft with hardware coprocessor