Each DP83848I or port sharing an MDIO bus in a system must have a unique physical address.

共用一个MDIO总线的每个DP83848I或接口，在系统里都必须有一个独有的物理地址。

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MDIO interface module block is an interface that is used in MAC level to control and manage PHY devices.

MDIO接口模块为以太网接口芯片中MAC层对PHY器件的控制管理接口。

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