Hi Snehasish, The DDC supports a wide range of sampling rates. Depending on the rates you want, some of the DDC filters could be removed to reduce utilization or there may be a better architecture to fit your situation. What rates do you need to support?
Jonathon On Thu, Apr 23, 2020 at 3:19 AM Snehasish Kar via USRP-users < usrp-users@lists.ettus.com> wrote: > Hello Brian > > While writing the bitstream it gave an error stung the current design > didn’t satisfy the timing constraint. > > I tried creating 12 blocks of DDC 1 to 2, blocks but that failed too > saying the placer couldnot place more than 5% of the movable instances in > the design. > > Regards > Snehasish > > Get Outlook for iOS <https://aka.ms/o0ukef> > ------------------------------ > *From:* Brian Padalino <bpadal...@gmail.com> > *Sent:* Thursday, April 23, 2020 4:19:14 AM > *To:* Snehasish Kar <snehasish....@live.com> > *Cc:* usrp-users@lists.ettus.com <usrp-users@lists.ettus.com> > *Subject:* Re: [USRP-users] Modifying RFNoC ddc block for 16 parallel > instances > > On Wed, Apr 22, 2020 at 6:17 PM Snehasish Kar <snehasish....@live.com> > wrote: > > Hello Brian > > Thanks for your response, actually I tried using DDC 1 to n block as given > here, but giving 1 to 8 channels have a timing issue, while generating the > build. So I thought it as an alternative plan. > > > https://gitlab.com/theseus-cores/theseus-cores/-/blob/master/fpga-rfnoc/README.md#dsp-utilsnoc_block_ddc_1_to_n > > > What was the timing issue? Is it possible for you to break up the logic > to help relax timing constraints? > > Brian > > _______________________________________________ > USRP-users mailing list > USRP-users@lists.ettus.com > http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com >
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