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MMSK
MMSK
Explorer II
October 21, 2024
Solved

Can STUSB4710 act as a DRD?

  • October 21, 2024
  • 2 replies
  • 621 views

Hi,

 

Can PD Controller (STUSB4710) act as a DRD?

STUSB4710 - Stand-alone USB PD controller (with short-to-VBUS protection) - STMicroelectronics

I believe that STUSB4710 cannnot operate as DRD (Dual Role Data), and can only function as UFP.
If there is a way to operate it as DRD, please let me know how to configure it.

 

Best answer by Didier HERROUIN

Hello,

The STUSB4710 is a standalone chipset designed for SOURCE role only. As specified in the standard, at connection the Data role must be aligned with the Power role, so STUSB4710 is the Host (DFP). Then, the STUSB4710 does not support the Data Role swap, so it stays as the Host.
For information, some PCs (acting firstly as UFP) ask for a Data Role and they switch to DFP even if they do not receive any response. It is not really compliant to the standard.

2 replies

Joe WILLIAMS
Joe WILLIAMS
ST Employee
October 23, 2024

Hi MMSK

 

This post has been escalated to the ST Online Support Team for additional assistance.  We'll contact you directly

 

Kind Regards

Joe

STMicro Support

    Didier HERROUIN
    Didier HERROUINBest answer
    Technical Moderator
    October 30, 2024

    Hello,

    The STUSB4710 is a standalone chipset designed for SOURCE role only. As specified in the standard, at connection the Data role must be aligned with the Power role, so STUSB4710 is the Host (DFP). Then, the STUSB4710 does not support the Data Role swap, so it stays as the Host.
    For information, some PCs (acting firstly as UFP) ask for a Data Role and they switch to DFP even if they do not receive any response. It is not really compliant to the standard.

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