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DP83867IR: About DP83867IR

Ozawa
Intellectual 850 points
Part Number: DP83867IR

Hi

Excuse me. It will be a basic question.

I have two questions.

① The power supply voltage is indicated as 1.0 V / 1.1 V / 1.8 V / 2.5 V, but is it all necessary?
　　Looking at the web, there was also a description of 1.1 V / 2.5 V.

②Customer is planning to use 1000T communication for video communication with LED display.
Do you have experience with this IC?
(Customer is concerned that packets such as MAC address, IP address etc, upper layers, will not work if data is sent in a way ignoring them.)

regards,

  • 0
    TI__Mastermind 19780 points
    Hi Ozawa-san,

    Your first question depends on what package you are using.
    When using 64pin QFP, then 1.1 V & 2.5 V are necessary.
    When using 48pin QFN, then 1.0 V & 2.5 V are necessary.

    Could you explain your second question? The DP83867 PHY does not change or generate any data in the packets. The MAC layer passes the data to the PHY which transmits it across copper. There are encoding processes between that, but the data is not changed.

    Best Regards,
  • 0 in reply to Rob Rodrigues
    Intellectual 850 points

    Hi Rob Rodrigues-san

    Thank you for your reply and support.

     I heard the specification to the customer.

    My customers are considering special usage.(The receiving side is not a PC but an LED display etc.)

    <Constitution>

    PC ⇒FPGA⇒PHY⇒ DISPLAY

    When outputting TX (when outputting destination address, source address, type, data, error detection).


    Is it possible to send only data without sending destination address, source address, type etc. etc?

    If the MAC frame was a proprietary specification, is it possible to transmit in a form ignoring the specification?

    The reason for asking the question is that customers have no experience with connection with video display equipment at 1000 T.

    Best regards

    Ozawa

  • 0 in reply to Ozawa
    TI__Mastermind 23675 points
    Hi Ozawa-san,

    The PHY does not care what contents you send so long that there is a SSD and ESD. The PHY will not care if you do not include a destination address, source address or go for some custom frame type. So long that your MAC is ok with the frame you should be good!

    Kind regards,
    Ross