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Possible DP83825I datasheet typos

David Hand
Intellectual 885 points
Other Parts Discussed in Thread: DP83825I

I'm not sure if this is the right place to post this, but there appear to be a number of errors in the DP83825I Ethernet Phy datasheet. Not unexpected for something so new.

I think the value labeled T2 in Fig 5 should be labeled T4.

based on the text:

The text of bit 5 in table 8 appears to be wrong:

I apologize if this is not the proper place to post such things.

  • 0
    TI__Expert 5670 points

    Hi David,

    - It is T2 in RMII Timing table as shown in Figure 5.

    - The description of bit 5 in table 8 should be as follows:

    5 Auto-Negotiation Complete RO 0 Auto-Negotiation Complete:
    1 = Auto-Negotiation process completed
    0 = Auto Negotiation process not completed (either still in process, disabled or reset)

    Regards,

    Hung Nguyen

  • 0 in reply to Hung Nguyen92
    Intellectual 885 points
    Hi Nguyen,

    So are you agreeing that the value labeled T2 in Fig 5 should really be labelled T4? I should mention that Fig 4 also has a value labeled T2 that seems to agree with the text.

    It's important since I need to configure the FPGA input delays for RX_D, RX_ER and CRS_DV. If T2 is the correct label in Fig 5 I have no way to do that since it only has a MIN value.

    Thanks,
    Dave
  • 0 in reply to David Hand
    TI__Expert 5670 points
    Hi David,

    In Fig5, it is clear that T2 should be labelled as T4. The description of T2 and T4 is for TX pins (RMII Transmit) and RX pins (RMII Receive), respectively.

    Regards,

    Hung Nguyen
  • 0 in reply to Hung Nguyen92
    Intellectual 885 points
    Hello Nguyen,

    You've been extremely helpful. I now have the chip working with an FPGA and it is a great fit for our application. My only concern now is will it be in production in the next few months.

    Thanks,
    Dave

    Note: please feel free to correct me if I'm getting your name backwards.
  • 0 in reply to David Hand
    TI__Expert 5670 points
    Hi Dave,

    I'm not in the position to disclose our production schedule. Please contact sales or marketing team.

    I will go ahead and close this thread. If you need further technical support, kindly open a new thread.

    Regards,

    Hung