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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 HERROUINAnswer
    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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