AR# 15383: LogiCORE 64-pt FFT v2.0 - The RESULT signal is not reset properly in the 64-point FFT v2.0
LogiCORE 64-pt FFT v2.0 - The RESULT signal is not reset properly in the 64-point FFT v2.0
General Description: The RESULT signal of a 64-point FFT v2.0 does not reset properly between transform results. The RESULT signal will go High 128 clock cycles early and stay High for 192 clock cycles instead of 64.
This problem is caused when an internal counter inside the core does not reset properly.
To work around this issue, reset the FFT Core before every transform.
This problem has been fixed in the xFFT Core that is now available.