Re: Using RFNoC blocks for satellite systems

[Marcus Müller]

This is a bit from the top of my head, so take with a grain of salt, but:

The problem with a port, aside from the space in the FPGA of the B210 simply being too 
small, is that the CHDR crossbar, i.e., the actual "network operation center" for the 
namesake Network-on-Chip, is based on an AXI crossbar core that Xilinx doesn't offer for 
the 6th gen FPGAs.
Now, one could argue "well, write it yourself!", and they'd probably hit a wall the moment 
they start trying to work the same kind of asynchronous clock domain crossings that the 
7th gen Xilinx FPGAs bring. But, that's hearsay to me, never looked into what the IP core 
actually uses on the FPGA.

Best regards,
Marcus M

On 26.01.24 23:32, Marcus D. Leech wrote:
> On 26/01/2024 17:28, Kevin McQuiggin wrote:
> > No it doesn’t!
> Are we violently agreeing here?
>
> The  B2xx family FPGAs aren't supported by the RFNOC toolchain, and they're not very big.  
> You could, probably "port"
>    the RFNOC toolchain to these FPGAs, but my understanding is that it would be a lot of 
> work.
>
> Regardless, officially, RNOC IS NOT SUPPORTED on B2xx hardware.
>
>
> > Sent from my iPhone
> >
> > > On Jan 26, 2024, at 14:22, Marcus D. Leech <patchvonbraun@gmail.com> wrote:
> > >
> > > On 26/01/2024 17:07, Daniel Estévez wrote:
> > > > Hi Yotam,
> > > >
> > > > As far as I know, the B200 doesn't support RFNOC. From
> > > >
> > > > https://www.ettus.com/sdr-software/rfnoc/
> > > >
> > > > "all USRP devices from the third-generation on (X300 Series, E300 Series) are 
> > > > supported by RFNoC out-of-the-box".
> > > >
> > > > Best,
> > > > Daniel.
> > > This is the case, yes.  The FPGAs in the B2xx series aren't compatible with the RFNOC 
> > > toolchain for one, and aren't really
> > >    big enough to support the RFNOC framework inside the FPGA.
> > >
> > >
> > > > > On 26/01/2024 21:04, יותם זיס wrote:
> > > > > Hi everyone, I'm currently working on a bpsk modem for S-band communication with the 
> > > > > Tevel and TAUSAT satellites. I recently started reading about RFNoc and it intrigued 
> > > > > me for use in my project since I own a USRP B200. Would love some advice on whether 
> > > > > or not to try this out and if so how to implement it correctly, thanks.
> > > > >
> > > > > Attached - a picture of my flowgraph, currently the uplink is connected directly to 
> > > > > the downlink but usually i use a lime mini for transmission.