1 of 1 people found this helpful
According to PD spec: A Capabilities Message (Source_Capabilities Message or Sink_Capabilities Message) Shall have at least one Power Data Object for vSafe5V.
When your device is checking whether UFP device is your own, you should provide 5V. After that, when the PD contract is estbalished, you can provide 20V.
Thanks Eddie! So is there any default for how the CCG uses the VSEL pins to indicate that the 20V contract has been established, or will I need to define that in firmware?
You can check that in the firmware. VSEL pin is used to control to buckboost to output the correct value.