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System and method for controlling a PHY attached to a MAC interface for energy efficient ethernet

  • US 7,930,373 B2
  • Filed: 06/30/2008
  • Issued: 04/19/2011
  • Est. Priority Date: 06/30/2008
  • Status: Active Grant
First Claim
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1. An energy efficient Ethernet method, comprising:

  • detecting a condition that is conducive to a change in a link rate of an Ethernet link;

    sending a message to a media access control layer that identifies a change to a link rate of said Ethernet link;

    changing a rate of operation of said media access control layer after receipt of said message;

    signaling, by said media access control layer to a physical layer device, an instruction to change said link rate of said physical layer device; and

    changing an operating state of said physical layer device upon receipt of said instruction.

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