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Methods and apparatus for signaling on a differential link

  • US 8,885,735 B2
  • Filed: 12/24/2012
  • Issued: 11/11/2014
  • Est. Priority Date: 03/14/2002
  • Status: Active Grant
First Claim
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1. An apparatus comprising:

  • a receiver comprising logic, when executed, to;

    enter a reduced power state;

    identify that a differential signal, transmitted in-band with a differential point-to-point serial data link by a transmitter, comprises a predetermined differential voltage condition for at least a predetermined length of time;

    interpret the signal as a wake signal based at least in part on the predetermined differential voltage condition for at least the predetermined length of time; and

    transition at least one particular component from the reduced power state to a normal power state based at least in part on the wake signal.

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