Dear Champs,
My customer found an issue that there was no NAK for IN transaction from USB HUB at sometime although there were NAK occurred in most time.
This issue also depend on the cable and there is some USB cable causing this issue. e.g. this issue was occurred in same USB cable.
So, they want to get our advice how they can debug this issue, and they also want to know if there is USB packet analyzer or something else to check this beside measuring USB eyediagram.
Could you please provide advice how they can debug this issue? and which equipment can be used for this like USB issues?
Thanks and Best Regards,
SI.