Thank you for the note, but I stated 200 WORDS and not bytes. :D
What I would like to know from somebody inside Espressif is if the limit for FIFOs is 200 or 256.

I searched all over internet and the conclusion is that there is some misterious document regarding DWC2 that is impossible to find ...

Itried to remove the 200 words limitation, that is related to a configuration register of the dwc2 subsystem.
From the value in the register, the developers of cherryusb assume that the limit is 200. I asked to them if this applies to esp32-s3,
and they replied that it's like that.

So again my ...

Hi everybody,
what's the exact size of the FIFO memory for the USB on ESP32-S3?

The Technical reference (version 1.7) states that " The portion of SPRAM that can be used for FIFO allocation has a depth of 256 and a width of 35 bits (32 data bits plus 3 control bits) " at page 1231.
So It seems ...