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High-speed interconnect solutions with support for co-propagating and counter-propagating continuous time back channel communication

  • US 10,560,555 B2
  • Filed: 10/30/2017
  • Issued: 02/11/2020
  • Est. Priority Date: 07/13/2017
  • Status: Active Grant
First Claim
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1. A network device for performing serializer-deserializer communication with a remote link partner (LP) over a transmission line, the network device comprising:

  • a network device receiver comprising;

    a decoder configured to extract first link training data from a co-propagating link training communication channel in a first signal received from the remote LP over the transmission line, wherein the co-propagating link training communication channel co-exists with data traffic corresponding to an Open Systems Interconnect (OSI) data link layer and other higher OSI layers in the first signal, anda link training transmitter configured to transmit second link training data over a counter-propagating link training communication channel in a second signal transmitted to the remote LP over the transmission line; and

    a network device transmitter comprising a transmitter front-end, an encoder, and an adaptation parameter receiver configured to receive the first link training data from the network device receiver and adjust one or more parameters of the transmitter front-end or the encoder based on the first link training data.

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