TUSB522P: TUSB522p's polarity can be changed?

Seokmin Hong

Intellectual 485 points

Part Number: TUSB522P

Hi, I found that USB 3.0's super speed line's polarity can be changed.

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Then I wonder if TUSB522P's super speed lines polarity can also be swapped as below.

Not whole line but only TUSB522p's in and out polarity can be change?

(From the host and device's view polarity are not changed)

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Is this okay? (Capacitors are not in the picture)

Thanks.

over 5 years ago

0 Malik Barton57 over 5 years ago

TI__Guru 64326 points

Hi,

TUSB522P can have the polarity swapped as you describe. You do not have to swap polarity on both sides of the devices. In USB 3, the RX PHY will fix any polarity swap. This is the case for TUSB522P.

For non-USB3.0 redrivers you can swap polarity at the input and have to swap polarity at output again to go back to the original state.

0 Seokmin Hong over 5 years ago in reply to Malik Barton57

Intellectual 485 points

Thanks, Malik

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TUSB522P: TUSB522p's polarity can be changed?