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Altera_Forum
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15 years ago

fft RELATED

HI EVERY ONE I am using FFT mega Core for performing the 1024 point FFT. Input (real data only) data to FFT core i am reading for a memory and within 40 micro sec reading should be completed...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

For any case of block based data processing (e.g. 1024 fft) you can keep the signal streaming by having two input buffers each 1024 size.

You read 1024 data into fft while receiving next 1024 input samples in a second buffer. You switch outputs as required:

state1: write input to buffer1, write from buffer2 to fft, read out fft

state2: write input to buffer2, write from buffer1 to fft, read out fft

It may be the altera fft streaming means this mode anyway, find out.