• State Resolved
  • Locked Locked
  • Replies 4 replies
  • Subscribers 32 subscribers
  • Views 263 views
  • Users 0 members are here
Support feedback
Options
Options
Similar topics

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

TUSB321: confirm schematic

Lawrence He
Genius 3085 points
Part Number: TUSB321

Hi, Support Team

We will use TUSB321, schematic as below chart. have any concern?

if any suggestion, Please advise me.

Thanks,

Best regards,

Lawrence

  • 0
    TI__Mastermind 25975 points

    Hi Lawrence,

    I see you're operating in DFP mode, but I don't see how you control your VBUS switch. This is typically done with the ID pin from the TUSB321.

    How do you enable/disable the VBUS on the type-C port?

    Best,

    Shane

  • 0 in reply to Shane Hauser
    Genius 3085 points

    Hi, Shane

    We use TPS2065CDGNR as Type-C Vbus switch, please refer the picture below.

    if any suggestion, Please advise me.

    Thanks,

    Best regards,

    Lawrence

  • 0 in reply to Lawrence He
    TI__Mastermind 25975 points

    Hi Lawrence,

    I see the SOC is controlling the VBUS switch, but what logic does it use to enable/disable the switch?

    This is the purpose of the ID pin on the TUSB321. The VBUS switch should be enabled when ID is low, and disabled when ID is high. USB-C requires that VBUS is not enabled until after the CC negotiation is finished on the CC controller.

    I drew a diagram to help show this connection:

    Best,

    Shane

  • +1 in reply to Lawrence He
    TI__Mastermind 25975 points

    Hi Lawrence,

    I hope you're doing well. Were you able to look at my question from earlier?

    If you no longer need support, I'll mark this as resolved.

    Best,

    Shane