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WEBENCH® Tools/TMS320F28388D: Connect Ethernet with RMII

Jan Hummel53
Intellectual 310 points

Part Number: TMS320F28388D

Tool/software: WEBENCH® Design Tools

How do you connect the phyical layer of the Ethernet to the PHY with RMII?

I found this in the TRM:

and ths in the datasheet of the TMS320F28388D:

I cant match them together.

can someone help?

Thanks a lot

Jan

  • 0
    TI__Guru** 116201 points

    Hi Jan,

    In EtherNET most of the signals for MII and RMII are same hence this is confusing. In figure 42-2, since it was showing specific connection for RMIII, signals names have prefix RMII though at device level these are prefixed with MII since these are common.

    We'll update the figure in next release to avoid this confusion.

    Following mapping you can use for now -

    RMIII_TXCLK - > ENET_MII_TX_CLK

    RMII_TXEN    -> ENET_MII_TX_EN

    RMII_REFCLK -> ENET_RMII_CLK

    RMII_RXD[1:0] -> ENET_MII_RX_DATA1, ENET_MII_RX_DATA0

    RMII_CRS_RXDV -> ENET_MII_RX_DV

    RMII_RXER -> ENET_MII_RX_ERR

    Hope this helps.

    Regards,

    Vivek Singh

  • 0 in reply to Vivek Singh
    Intellectual 310 points

    Thank you very much