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DP83822IF: EEE 1Gbps Enable function

Hirotaka Matsumoto
Guru 27585 points
Part Number: DP83822IF


Hi all

Would you mind if we ask DP83822IF?

This device doesn't support 1Gbps.
So, what is EEE 1Gbps Enable function used for?

Kind regards,

Hirotaka Matsumoto

  • 0
    TI__Intellectual 2100 points

    Hey Hirotaka,

    I'd bet that it is simply and artifact of the design being able to use the RGMII protocol to interconnect with the MAC. I honestly can't ever think of a scenario where you'd want to do this with a 100Mbps but then not support gigabit as well. Strange to me. 

    I would simply zero the register and disable it since I assume that you will be using the 100Mbps speed. If you do need GigE then try the DP83867 series of parts. You can use a variant with SGMII for optical media conversion applications if that is necessary. Unfortunately, TI doesn't make any simple MAC to Fiber GigE parts that I am aware of.

    If this answered your quesiton please verify the answer by hitting the green button below so I can know that I helped! If you have additional questions just let me know. 

    Best Regards,

    Nick