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How to integrate DM8168 with DP83848C(National PHY chip)?

Seung Youl Lee
Prodigy 30 points
Other Parts Discussed in Thread: DP83848C

DP83848C is for 10/100Mbps ethernet PHY chip. I want to interface DM8168 with DP83848C.

DM8168 has 8-bit TXD/RXD,but DP83848C has 4-bit TXD/RXD. How to solve this mismatch?

 

 

  • 0
    TI__Intellectual 1635 points

    Hi,

     

    The module automatically switches from GMII (8 data pins [7-0]) to MII (4 data pins [3-0]) based on the mode and speed.

    The interface to MII PHY would be the same as GMII except of course for the 4-bit data pins.

     

    (refer to the DM816x Technical Reference Manual - 6.2.1 Signal Description)

     

    Benoit

    P.S. If this response helps answer your question please mark this post as verified - Thanks!