On 2022-08-02 16:45, David Raeman wrote:
I don't know the limitation of the N310 embedded ARM to have an
opinion in embedded mode.
Not a chance that it could support anything more than about 10Msps at the
outside.
The E320 docs also mention 10Msps max to the embedded ARM processor, and I
found that to be strange. What's the architectural cause of that limitation?
I'm not familiar enough with the USRP data architecture, but I've worked on
other Zynq-based SDRs that could move samples from the PL to the PS at far
higher data rates using a DMA IP block and shared memory. The 10Msps
upper-bound seems like it'd limit the applications that could be developed in
embedded mode for the E-series..
-David
I didn't design it. But even if the interface could support higher
rates, it's unlikely that the ARM CPUs could do anything
very interesting at higher rates. I have developed apps for embedded
ARM boards like the XU4Q, which is MUCH more
capable than the (pair?) of ARM CPUs in the Zynq on the N310, and
even there, they struggle with higher sample rates,
depending on what you're doing.
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