A "real" address the value that must be placed on the system address bus to select a physical memory bank or device.
物理地址：真实的地址，其值必须被置于系统地址总线中用于选择物理存储位置或者设备。
The MSI memory location is a physical bus address, so it must be translated to virtual address space both on device and host.
MSI的内存位置的物理地址，所以它必须转换为对设备和主机的虚拟地址空间。
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。
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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