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TPS65988: FRS Event evaluation

Part Number: TPS65988

Hi,

I've tried the FRS procedure with the phone that currently does not support it and our Bus-powered HUB implementation.

I was expected to see any PD FRS request is sent from PD to the phone or phone FRS reject answer while the Charger disconnection.

Unfortunately, when I disconnect the charger from Port2, the Phone connected to Port1 (in Sink mode/Charging), just disconnected from the USB due to the VBUS drop to low

and power up again in the Source mode after ~300-500msec.

Please see attached :

  1. The issue description slides
  2. PD FW state machine traces
  3. PD SW pjt & bin
  4. PD Parser traces and log

Thanks

Vitaliy

1667.FRS evaluation with ADV_CONG TPS65988.zip