how to set the decimal and fractional bits (m.n) for sink_real and sink_imag when i use Fixed Point?

Hi,

Please refer to the Column "Size" in the below link to understand about the input and output width w.r.t. different FFT parameter settings.

3.6.2. FFT IP Core Avalon-ST Signals (intel.com)

Thank you,

Kshitij Goel