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Ethernet RMII and MII configuration modes

Ramachandran1992
Associate III

Hi Team,

I am Using NUCLEO-F439ZI EVM, while using ethernet interfacing,

In the RMII mode:

  •  LWIP -> Platform Setting -> Driver_PHY - both LAN8742 and DP83848 are enable.

In the MII mode (both half-duplex and full duplex):

  • LWIP -> Platform Setting -> Driver_PHY - only DP83848 are enable.

My problem was, while using TCP client and server programming, I choose MII mode, I does not show LAN8742. while using RMII mode, the sent from PC -> EVM board, it cannot accept the data. Guide, what is the mistake done? give the clarification.

Thank You

Ramachandran.S 

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