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DS280DF810: Interlaken compatibility

Charlie B
Prodigy 90 points
Part Number: DS280DF810

Tool/software:

Hello,

Is the DS280DF810 compatible with Interlaken?

I'm considering using this DS280DF810 part to extend the channel length between two Xilinx XCVU9P FPGA 100G (4 x 25G NRZ) Interlaken end points.

Since this part only appears to be reconditioning the physical serialized signal, I can't think of a reason why it wouldn't be compatible with Interlaken. It shouldn't interfere with anything that's going on in the PCS layer and other higher layers of the Interlaken protocol?

Thanks,

Charlie

  • +1
    TI__Mastermind 22977 points

    Hi Charlie,

    The DS280DF810 is not protocol aware, so I would not expect it to interfere with anything going on in the PCS layer or other layers.

    You'll want to double check the physical signaling levels to ensure that they are compatible.  Also, DS280DF810 is typically used in applications with DC balanced encoding such as 8b/10b encoding or 64b/6bb encoding plus scrambling.  I believe Interlaken implements something similar in order to achieve DC balance.

    A couple other questions:

    • Does Interlaken implement any sort of auto-negotiation?
      • Auto-negotiation is low speed communication (312.5 Mbps) sometimes used in Ethernet to determine the link speed.
    • Does Interlaken implement any form of link training?
      • Link training involves a host tx sending different pre/post cursor emphasis signals and a rx link partner communicating the optimal pre/post settings back to the host.

    Thanks,

    Drew