quintosardo No codecs, I was thinking about the analog inputs, that are limited to 22050 sam/s x 8ch.
right. There is a post from the very early days of this forum where I discuss the timing constrains in detail. I think the short story is that if you are only using analog inputs or analog outputs, then you could have them run at 8ch 44.1kHz. If you are using both of them, then the required bandwidth would be too much. I think one of the limiting factor is the 24MHz clock used for SPI. One could try to run it at the next higher speed of 48MHz, but that used to give signal quality issues at least on the early Bela cape prototypes. These considerations hold true through the Bela rev B and BelaMini rev B capes, which were using 500ksmps parts for the analog ADC/DAC.
The rev C ones have further changes: the ADC has been replaced with an ASD8166 which is a 250ksmps part and on the Bela cape the DAC has been moved to the McASP port. This means that now that there should be enough SPI(at 24MHz) bandwidth available both on the BelaMini and the Bela cape, the ADC is no longer capable of supporting the 44.1*8 = 352.8 ksmps required. One could try to use it that way and it may work, but it may be out of spec.
There are some Rev C out there that have been built with ADS8168 instead (500ksmps), so if you are a lucky one with one of those, you may have the necessary hw to try things out, but that wouldn't translate to most other units out there (or that will be manufactured in the future).
