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SN75DPHY440SS: 5 feet MIPI extension

Connie Lu1
Intellectual 2130 points
Part Number: SN75DPHY440SS

Hi team,

My customer has a new project for MIPI extension - 1 lane data and 1 lane clock over 6 feet of twisted pair instead of 5 feet which they do passively.  Data rate is 300 Mb/s. They are looking at SN75DPHY440SSRHRT for this project and was wondering would they need 1 or 2 of these ICs?

Thanks,

Connie

  • 0
    TI__Guru**** 177011 points

    Connie

    The DPHY440 can support max data rate of 1.5G, so 1300Mbps is within the DPHY440 support capability.

    The DPHY has both receiver equalizer and transmitter pre-emphasis to compensate the channel ISI loss. Three RX equalization levels are available at 0 dB, 2.5 dB, and 5 dB at 750MHz. Two TX pre-emphasis levels are available at 0dB and 2.5dB. Depending on the channel loss and the placement of the DPHY440, we can use both RX equalizer and TX pre-emphasis to achieve the optimal result.

    Do we know the loss of this 5ft cable and the placement of the DPHY440 in their system?

    Thanks

    David