Hi,

I am trying to use the "radix 4 complex fft"(CFFT) core. Someone that already used it, maybe can help me.
The author says that "The output is 4-based reversed ordered, it means: a0a1a2a3a4a5a6a7a8a9 => a8a9a6a7a4a5aa2a3a0a1"

I don't understand what he means for "the output". It is the bits of all Iout and Qout values? Or the outputs signals aren't in the correct order and I should read it in a bit reversed order?

If someone has an implementation and a test bench for the CFFT, please send me. Can be very helpful.

Thanks!