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Management Data Input/Output (MDIO)

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Brief description:

MDIO is a two-wire serial used to read and write the contents of registers in a specific device. MDIO is used in conjunction with a much higher speed protocol, called Media Independent Interface. MIDO and MMI are used primarily in network interfaces, to connect the Media Access Control (MAC) device to the Ethernet Physical Layer (PHY) device. MDIO acts as the high level control, while MMI provides the high speed data throughput.


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Example MDIO Parts:
What Logic decodes:

  • Start of Frame
  • OP Code
  • PHY Address
  • Register Address
  • Turnaround Time To Change Ownership
  • STA Write Data
  • MMD Read Data

trello ID: 572919305842e567529c0b3b
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