USB 3.0 Interface between HUB and CPU

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Aminanet
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Hi,

I am using a USB 3.0 hub "CYUSB3314" to get 4 connectors from a single connection comes from a CPU. I know how should I connect the upstream connection to a connector but I am confused how to connect that to a CPU. is it going to be like a connector (TX_M to TX-, TX_P to TX+, RX_M to RX-, RX_P to RX+) with having swapping option between each polarity or should I connect TX to RX in each side?

Thank you in advance.

 

 

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Sananya_14
Moderator
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750 replies posted 500 replies posted 250 solutions authored

Hi,

If you're connecting the upstream port to a CPU directly, the lines would have to swapped as in the connection 2 diagram. This is because, in case of a connector, the cable takes care of swapping the lines so you wouldnt need to swap them on your board.

You could also refer to the KBA- https://community.cypress.com/t5/Knowledge-Base-Articles/HX3-FAQs-KBA224063/ta-p/260248

Best Regards,

Sananya

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2 Replies
Sananya_14
Moderator
Moderator
Moderator
750 replies posted 500 replies posted 250 solutions authored

Hi,

If you're connecting the upstream port to a CPU directly, the lines would have to swapped as in the connection 2 diagram. This is because, in case of a connector, the cable takes care of swapping the lines so you wouldnt need to swap them on your board.

You could also refer to the KBA- https://community.cypress.com/t5/Knowledge-Base-Articles/HX3-FAQs-KBA224063/ta-p/260248

Best Regards,

Sananya

Aminanet
Level 1
Level 1
First reply posted First question asked First like given

Thank you for the fast and clear answer.

Regards,

Amin.

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