08-17-2019 05:25 AM
There is something with my project . I have read PG109.It said that I can use the ifft by setting s_axis_config_tdata to 0. But when I setted the s_axis_config_tdata to 1 or 0 in my project. There are the same result. Could some tall me what's wrong with my project.
08-19-2019 11:41 AM
HI @zhao008 ,
Are you perhaps testing with a real signal? That might give the same results for FFT / IFFT with some scale differences, and be the nature of your observation although I haven't used Xilinx's core myself.
Look into it - it's a good exercise. Try it with Python, Octave or Matlab first.
08-23-2019 12:37 AM
hi @zhao008 ,
Is the FWD/INV field in the config_tdata correctly configured? I see the LSB bit is changed from 0 to 1. Does the LSB bit correspond to FWD/INV field ?
The config_tdata bus width changes based on the FFT configuration, please let me know the config_tdata bus configuration based on your FFT IP configuration ?