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tusb2077/tps2543 port not detaching

I have a circuit with a tusb2077 that fails to release a port when a device is disconnected.

At the port, I am using a tps2543 to configure the port for phone charging.  Everything works correctly except, devices will not 'unmount'  when you remove them from the connector.  For example, if you plug in an iphone, it shows up on the PC but when you unplug it, the iphone continues to show up on the PC.

This does not happen when you plug it into the PC directly, bypassing the '2077.  The device disappears from the PC when you unplug it.

This happens with every type of phone I have tried (samsung, HTC, apple, LG).  

Any thoughts?

David