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fft core issue

Honored Contributor II



I want to implement 1024 points FFT in cyclone II using dsp builder v6.0. 

For this purpose I am tring to test the FFT core. But I can not solve this problem after 3 days effort yet. 


when I try to take FFT of sine wave I got zero at the output. 

Please guide me what I have missed in my model???I have attached fft_model.mdl file along this thread. 


Please help me..
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