On Wed, Apr 22, 2020 at 6:00 PM Snehasish Kar via USRP-users < usrp-users@lists.ettus.com> wrote:
> Hello > > I need to have input 16 input and output port from the RFNoC so that I can > custom sample rate for each channel. Is it possible to modify the RFNoC DDC > block and split stream block to achieve this. > Probably not successfully. They are too large by themselves to just instantiate 16 of them. Moreover, having lots of output ports on a block is not really well supported from my experience. Lastly, having 16 blocks just isn't going to work. The crossbar doesn't have enough ports. You're better off making a block with 1 input and 16 outputs, but, as I mentioned before, that is still potentially problematic. Also, the split stream is pretty finicky. I don't believe it conforms to the AXI spec and might cause lockups. Lastly, you need to make sure you adhere to the ~200MHz/AXI port rule of thumb. Do you have a block diagram of what you're trying to achieve? Brian
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