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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
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17 years ago

Right after reset_n is asserted, sink_ready isn't asserted yet... if I recall correctly, it stays de-asserted for one cycle (can be more, I don't remember).... essentially, you are sending data to the core before the core is ready to accept more data.... hence you are getting the 11 error.... and this is also why sink_ready de-asserts as well...