02-04-2020 03:46 PM
I'd like to use the FFT with 16 channels, but found it can only go to 12 channels (v9.1). Is there some reason 16 cannot be used? Is it only a GUI constraint?
02-05-2020 05:28 AM
It's not the restriction from GUI, but from the IP itself. We have designed the IP for maximum 12 channels. For more than 12 channels, we need to use more than 1 FFT IP.
02-05-2020 07:30 AM
OK. I guess I am curious why 12? - most limitations I've seen are power-of-2 limitations, of which 16 is the closest.
02-08-2020 07:18 PM
The power of 2 limitation is for FFT point size, i.e. tranform length, the number of channels means you can have one FFT IP dealing with 12 different input channels.