DP83867IR: Ethernet physical layer

Intellectual 480 points

Replies: 6

Views: 191

Part Number: DP83867IR

the mdio pin is always output and can not read or write internal registers. strap mode for address is mode 1 and address is 0.

6 Replies

  • Hi Saman,

    You will need to provide us more context here.

    Can you please send us a schematic and more description on what the issue is please?

    Best regards,

    Ross Pimentel

    Ethernet - Applications Engineer

  • In reply to Ross Pimentel:

  • In reply to saman mazrooie:

    Hi 

    the the schematic if attached. my problem is that after reset, mdio pin loads the signal that sourced from dsp.

    it seems that tho mdio pin is output after reset. 

    Thank you for your answer.
  • In reply to saman mazrooie:

    Hi Saman,

    There is an internal pull-up on MDIO to VDDIO.

    Is this what you are seeing?

    I do not see a schematic attached.

    Best regards,

    Ross Pimentel

    Ethernet - Applications Engineer

  • In reply to Ross Pimentel:

    Hi Ross Pimentel

    schematic is attached. pull-up isn't my problem. the problem is that after reset mdio is output and i can not set the device internal registers. 

  • In reply to saman mazrooie:

    Hi Ross Pimentel

    schematic is attached. pull-up isn't my problem. the problem is that after reset mdio is output and i can not set the device internal registers. 3323.eth.rar