About stopping VBUS supply of HUB downstreamport

[NoAr_1540581]

Hello

Regarding the USB HUB specifications, I think that it is possible to stop VBUS supply of the downstream port individually . If correct, is it ok to think that I can use the following Host comand? And, is it okay to think that the follwoing command can stiop DS VBUS for both USB2.0(HX2VL) and USB3.0 HUB(USB3.0)?  Otherwise, please let us know, If there are some other method to stop VBUS supply of the DS individually

・ Clear Hub Feature (CLEAR_FEATURE)

Best Regards

Arai

[HirotakaT_91 · Accepted solution]

Hi,

You can simply issue ClearPortFeature(PORT_POWER) from Host to Power OFF port power.

If the power switching of Hub is "individual mode", the command will work individually.

If the power switching of Hub is "ganged mode", the command will work all ports.

Best regards,

Hirotaka Takayama