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HD3SS3220: TX1p/n and RX1p/n connections.

Kengo.Y
Guru 11255 points
Part Number: HD3SS3220

Hi team,

The datasheet said "HD3SS3220 Does Not Care About Differential Pair Polarity".
Can I swap positive and negative?
Is the content written in the data sheet correct?

TX1p = TXN1
TX1n = TXP1
RX1p = RXN1
RX1n = RXP1



Sincerely.
Kengo.

  • +1
    TI__Guru**** 177626 points

    Kengo-san

    There is no issue with swap polarity, for USB specification all the USB3 PHYs must be able to detect any polarity inversion and compensate it. And from our device's perspective, there is no issue since the HD3SS3220 is a passive switch and does not deal with the information on the SS lanes.

    Thanks

    David