The following figure shows a write transaction across the MDIO, defined as OP=01. The addressed PHY device (with physical address PHYAD) takes the 16-bit word in the Data field and writes it to the register at REGAD.
Figure 1. MDIO Write Transaction
The following figure shows a write transaction across the MDIO, defined as OP=01. The addressed PHY device (with physical address PHYAD) takes the 16-bit word in the Data field and writes it to the register at REGAD.