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Original question:

TUSB7320_USB Device Connect Error

TUSB7320: Can't find USB mass storage equipment

Gary Teng
Genius 5530 points
Part Number: TUSB7320
Other Parts Discussed in Thread: TUSB7340

Hi all,

 My customer use TUSB7320 in their project but has issue in connecting USB storage equipment (50% fail rate). But changing device in the same board can fix the issue. They use the method in errata but still can't fix their problem:

Host controller port link state fails to go to Recovery when device initiates a U1_EXIT.   ///        Disable U1/U2: Set PORTPMSC U1 timeout and U2 timeout to 0xFF

 Is there any suggestion for my customer? Thanks for your kindly help.

Best regards,

Gary Teng