TUSB8041: USB 3.0 MUX

Shinu.V.Mathew

Part Number: TUSB8041
Other Parts Discussed in Thread: HD3SS6126

Hi Team,

Customer is having USB 3.0 MUX requirements .Refer the below block diagram.

The HS & SS signals are the inputs to Mux from Processor or Host controller. They prefer to use one common USB 3.0 port to switch between the direct SS & HS signal (Processor) or from the USB 3.0 HUB. It requires to short or develop a stub at the output of the MUX & USB 3.0 connector.

Customer required inputs from us that the stub or junction between the USB connector and MUX would not deviate the requirements?

When A port is selected what would be status of B port ? will it be in Hi-Z state?

Do advice if the below configuration would meet the requirements.

Regards, S Mathew.

9 months ago

0 David (ASIC) Liu 9 months ago

TI__Guru**** 154591 points

S.Mathew

You can not share the SS and HS signal between the hub and the host controller. You would need another MUX to switch between the host controller and the hub.

For HD3SS6126 port B, it is high Z when not being used,

Thanks

David

0 saravanaprabhu sarva kannan 9 months ago in reply to David (ASIC) Liu

Prodigy 250 points

Dear David,

Thanks for the response. I am still not clear on your response.

May I request to highlight the same, what is wrong with the current proposal.

Do suggest with a block diagram which another mux option.

regards

Prabhu

0 David (ASIC) Liu 9 months ago in reply to saravanaprabhu sarva kannan

TI__Guru**** 154591 points

Prabhu

Please see block diagram, the red block shows where you would need the second MUX.

Thanks

David

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TUSB8041: USB 3.0 MUX