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Handling when buffer underrun error occurs on USB Host side

Question asked by shuta tanaka on Feb 28, 2018
Latest reply on Mar 5, 2018 by igorpadykov


I am targeting the i.MX25. I am trying High-speed USB communication using the OTG port.

Sometimes underrun error occurs during Bulk-OUT transfer. Looking at the USB bus log, retransfer occurs every time after this error occurs.

· Is this retransfer one of the specifications specified in the EHCI standards or the original specification of this chip?
· What should be done on the software side if an underrun error occurs?