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TPS65982: TI Alternate PDIO for GPIO control & interoperability

Paul Antunes
Intellectual 2590 points
Part Number: TPS65982


Dear team,

I have a new request regards to TI Alternate mode for TPS6598x.

Can we implement TI Alternate mode into other PD controller out of the TPS6598x series ?

More precisely, my customer wants to design a system with TI PD controller on one side; other side is designed through ODM with competitor solution. Customer would like to use PDIO feature but he would know how to make TI solution compatible with competitor device and enable GPIO controller over PD protocol.

Does the PDIO feature requires TI PD controller on both sides ?

thanks for your help.

regards,

Paul

  • 0
    TI__Guru 50120 points
    Hi Paul,

    Just for clarification, you are asking to enter Alternate Mode, does both device have to be from TI?

    As long as both sides have a PD controller that is configured correctly to enter Alternate Mode, there should not be any issues with using competitor solution. However, I'd like to say that the GUI that is associate with the TPS6598x devices already has software for both DFP and UFP with Alternate Mode capability. Using different sets of devices might cause issues in firmware since both DFP and UFP have to properly communicate to establish an Alternate Mode connection.

    Regards,
    Jimmy Hua
  • 0 in reply to Jimmy Hua
    TI__Intellectual 2590 points

    Hi Jimmy,

    Actually my question is regarding the PDIO feature. It is a feature of TI Alternate mode which allows to transmit or receive slow digital signals. see application note SLVA855 for further information.

    Customer has TI solution on one end of typeC cable (UFP). Competitor solution is designed on other end (DFP). Customer would use PDIO for GPIO control but he wants to know how to implement such feature on competitor device for compatibility between the two equipments.

    Is it possible to implement PDIO on competitor part ?if so, what is the procedure ?

    thanks

    Paul

  • 0 in reply to Paul Antunes
    TI__Guru 50120 points

    Hi Paul,

    Thanks for the clarification, I'll look into it and get back to you asap. 


    Regards,

    Jimmy Hua 

  • 0 in reply to Paul Antunes
    TI__Guru 50120 points
    Hi Paul,

    After talking with the team, it turns out that the TI PDIO feature is specific to the TPS6598x series devices. Unfortunately that means if you want to enter PDIO mode, you would need to have the TPS6598x devices on both the DFP and UFP ends.

    Regards,
    Jimmy Hua