Dear,
I have a question about the TPS65981 USB PD controller.
For a project I need an enable pin for this controller, in such way, that VBUS power only is enabled when the host controller asserts its power available pin.
I use the program TPS65981_2_6_7_8 Application Customization 4_03 to generate customized firmware for the TPS65981.
But when looking at the IO pin options, I cannot find a specific enable pin to override the TPS while keeping it functional.
Is there a way to set this up ?
The problem is that the USB 3.0 driver stack can get confused between power states when the VBUS remains present while the driver software expects VBUS to be off.
Is there a reference hardware design example how to proceed ?
Thank you very much in advance.
With kind regards,
Wim van der Steeg
AVS Netherlands