What is the host controller that you are using?.
Are you using a FX3 DVK with engineering sample on it?.
I am using TI TUSB7340 & NEC Host, but i don't think it is host issue.
I have modified engineering sample to FullHD UVC, but the modification is just the bigger payload.
perhaps you could do the same at your end to see what's really happening.
Hi Owen Chang,
I don't think FX3 is waiting for the ACK from the host side.
It is just that the host controller is sending the ACK to FX3 before it recieves the total number of packets.