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MDIO (Management Data Input/Output)

MDIO, also known as Serial Management Interface (SMI), is a serial bus defined for the Ethernet IEEE 802.3 specification for Media Independent Interface (MII).

Wrong MDC / MDIO wiring or Data Edge yields incorrect decode. For channel-prefix differences, see Settings.

Decode Settings

Decode Settings

MDIO Decode Settings
  • MDC: Transfer clock of MDIO.
  • MDIO: Transfer data input/output of MDIO.
  • Data Edge: Latch data on the MDC rising or falling edge. Default: Rising.
  • Enable Preamble Counter: Configurable MDIO Preamble width (4–32 Bit). Field enabled (Enable) when checked. Default: cleared; width 32 Bit.

Result

MDIO Result

MDIO decode result

See also