TUSB8043A: spec check

GARETH OU

Part Number: TUSB8043A

May I ask this removable setting, in which application will it be different? Will it be affected on Windows 10? Or will all OSs have different effects? Customers usually connect to USB typeA, so they will be set to removable. Want to know if it is not removable, what effect will it have on the application?

over 3 years ago

0 JMMN over 3 years ago

TI__Guru 60865 points

Hi Gareth,

When a port is set to non-removable, the hub will report that configuration to the host controller as part of its descriptors. We have seen no impact on the host controller behavior based on that setting.

Regards,

JMMN

0 GARETH OU over 3 years ago in reply to JMMN

Mastermind 9725 points

Hi JMMN

Thanks you kindly reply

“no impact” means setting to either removable or non-removable will not get strange event from OS while device unplug then plug in?

If no impact, what the actual using of this feature?

0 JMMN over 3 years ago in reply to GARETH OU

TI__Guru 60865 points

The removable / non-removable setting is defined by the USB specification to determine appropriate power consumption on ports / hubs under different scenarios, but we have only seen host controller drivers use this information for bus powered hubs.

Regards,

JMMN

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TUSB8043A: spec check