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Altera_Forum
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17 years ago

FFT 8.0, sink_ready de-asserted

Hi, I am trying to test the functionality of FFT version 8.0. The device family that I am using is Cyclone II. Below is the parameter of the FFT: Transform Length: 64 points Data Preci...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
17 years ago

Hi,

I got good news, for the problem (sink_valid goes low half way during input) the mistake was I did not turn on Global Clock Enable during code generation. The pin "clk_ena" needs to be there and set high for it to work properly, other wise there will be a warning like this:

Can't find signal in vector source file for input pin "l fft_test1 l fftblock: inst l asj_fft_sglstream_fft_81 : asj_fft_sglstream_fft_81_inst l clk_ena"