AM3354: AM335x USB error package quesiton

Part Number: AM3354

Tool/software:

Hi Expert,

When a customer uses an AM3354 and a PL2586 USB hub downstream for ESD testing,

the data is recorded to the USB hub and an ERR message is displayed. This error message is normal, but the CPU USB host controller cannot detect the error, and the CPU cannot recover from the hub.

Is this because the PL2586 is too new, or is there another method for error detection?

Thanks

Daniel