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Original question:

SN75DPHY440SS: 6 CSI 1 lane retimer solution

SN75DPHY440SS: MIPI CSI Re-timer polarity inversion

Far Hung
Expert 7490 points
Part Number: SN75DPHY440SS


Hi 

Do we have CSI re-timer with polarity inversion?

I want to know if can I swap the port like below image? because the layout routing limit.

 

  • +1
    TI__Guru**** 182251 points

    Hi,

    From the net name, is this a CSI-2 application?

    For CSI-2

    The DPHY440 supports 4 CSI-2 DPHY lanes plus a clock. Unlike DSI, CSI-2 does not have a back channel path. Because of this, there is no requirement on lane ordering. Because there is no lane ordering requirement, there are more combinations which can be implemented. All possible combinations are supported by the DPHY440. For all CSI-2 implementations, the polarity must be maintained between the CSI-2 Source and CSI-2 Sink. The DPHY440 does not support polarity inversion.

    It also looks like you are not using DA2P/N and DB2P/N. In this case, I would recommend not using lane 0 but lane 2.

    Thanks

    David