I just made a board using the TUSB319 device, and I'm having difficulty getting consistent charging currents.
I tried charging the tablet last night after a full discharge. When it was plugged into the TUSB319 device, the tablet came on with auto-boot but the current measurements were inconsistent. When the tablet is fully charged, it'd show 54mA (I'm expecting 3A based on the TUSB319 settings). When fully discharged it jumped around between 2.8A, 54mA and 0mA before settling on 0mA even though the tablet indicated it was plugged in.
Any ideas on what might be going on?