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HD3SS460: HD3SS460

haiping lu
Prodigy 40 points
Part Number: HD3SS460

Hi All

In HD3SS460 spec, it says:

My understanding is when you swap the input side differentical P/N, you should also swap the related P/N in output side of HD3SS460. Am i right?

In Figure9, we can see when you swap CRXxN/CRXxP, you swap MLxP/MLxN, but the SSTxN/SSTxP differential pairs do not wrap. I am a little confused why this happens.

Would you like to help us to figure it out?  

thanks

best regards

  • 0
    Prodigy 40 points
    Add the missed part in my questions:
    In page24, it says: For ease of routing, the P and N connection of the USB3.1 differential paris to the HD3SS460 pins
    can be swapped as long as the corresponding pairs are swapped on the other end of the switch.
  • 0
    TI__Mastermind 36085 points

    Hello Haiping,

        USB3.1 supports polarity inversion, therefore if you swap the CRX and/or CTX differential pairs, then you don't have to swap the SSRX and/or SSTX differential pairs as well. This inversion will be detected and Handled by the protocol itself.

       Displayport is a different story, this protocol does not support polarity inversion. Therefore if you swap the CRX and/or CTX differential pairs, then you MUST do the same on the DP side (MLx pairs).

    Regards,

    Diego.