This error usually occurs in case of backflow i.e, data arriving at a very fast rate to the channel or if the data is not processed fast enough. I hope you are using the UVC Model of firmware as in An75779 application note. If so, we suggest you to use a more efficient model of firmware that can process the data even more faster so that this error is avoided.
Please contact the cypress tech Support to modify your firmware based on a recent more efficient model. Please mention about this forum post and my reply in the Tech Support Case you create.
- Madhu Sudhan