TPS2543: TPS2543 (Plug in the keyboard on the USB charge port, then insert the adapter, and the keyboard light will turn on for a moment.)

Part Number:TPS2543

Dear all,

I met issue in using TPS2543 in recent project.

Question description:

Plug in the keyboard on the USB charge port, then insert the adapter, and the keyboard light will turn on for a moment.

We measured the fail waveform and found no other exceptions. It is inferred whether the IC will initialize the device inside.

Could you please give us comments on it? Thanks!