Then I will try with 4 ports in DmaFIFO. Later maybe I will need to add more ports, does anyone have any ideas? 2 DmaFIFO, big FIFO_LOOPBACK? The throughput is about 11MSamples. I would like to know the complex about that, because maybe it doesn't be possible for my project.
El jue., 21 may. 2020 a las 22:24, Rob Kossler (<[email protected]>) escribió: > ok. I'm not sure if there is an upper limit, but I believe you should be > able to have 4 ports because there are 4 ports in the DmaFIFO on the N310. > > On Thu, May 21, 2020 at 4:21 PM Carlos Alberto Ruiz Naranjo < > [email protected]> wrote: > >> Hi Rob, >> >> I'm using UHD-3.15.LTS and I have developed a custom DUC with N inputs >> and 1 output. I have done the same with the DDC (1:N) and it works fine. >> But with the DUC I have the problem with the DMA_FIFO, I need one DMA_FIFO >> channel per DUC channel. I have thought about some solutions and I would >> like to know which would be the best or if they are possible before I >> started developing: >> >> - Increase the DMA_FIFO ports: from 2 to 4. >> - Add another DMA_FIFO. >> - Use FIFO_LOOPBACK with large size. >> >> My graph is: DMA_FIFO(N:N) -> (N:1) DUC -> (1) Radio >> >> Thank you :) >> >> >> >> >> El jue., 21 may. 2020 a las 21:13, Rob Kossler (<[email protected]>) >> escribió: >> >>> Hi Carlos, >>> I don't quite understand. Which version of UHD are you using? For the >>> UHD 3.15 and earlier, I thought that the typical configuration was indeed >>> host->DmaFIFO->DUC->Radio as you were hoping for. For the current master, >>> I noticed that the DmaFIFO is not included in the statically routed FPGA >>> image. But, aside from the master branch, the DmaFIFO should have 2 ports >>> such that you can connect to two DUC blocks. >>> Rob >>> >>> On Thu, May 21, 2020 at 2:34 PM Brian Padalino via USRP-users < >>> [email protected]> wrote: >>> >>>> On Thu, May 21, 2020 at 2:25 PM Carlos Alberto Ruiz Naranjo < >>>> [email protected]> wrote: >>>> >>>>> Thank you for the response Brian :) >>>>> >>>>> The throughput is about 11MSamples. >>>>> What about to use the AXI_FIFO_LOOPBACK? >>>>> >>>> >>>> No idea about that. Someone else will have to weigh in. >>>> >>>> Good luck! >>>> >>>> Brian >>>> >>>>> _______________________________________________ >>>> USRP-users mailing list >>>> [email protected] >>>> http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com >>>> >>>
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