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By using 43907, SPI DMA as well as memory to memory DMA is not possible in application layer. Actually, my application is moving lots of data from SPI then on the internet. Is 43907 suitable for such application ? Or, any other methods using 43907 or other chips that can recommended ?
The primary limitation in implementing this in your application would be the SPI Bandwidth.
Since this is now running in the application you will have to make sure your application is not too large and the thread that is doing the SPI transfer is getting sufficient time to complete the transfers.