The MDIO interface is a simpleMDIO is used to connect a management entity and a managed PHY for the purposes of controlling the PHY and gathering status from the PHY.The two lines include the MDC line [Management Data Clock]The clock is point-to-point [driven by the MAC]The data line is Tri-state able and can drive 32 devices. [Tristate Definition]The clock is defined with a period of 400nSData is stable both 10nS before the rising edge of the clock and 10nS after the edge. Data is assumed to be
