• State TI Thinks Resolved
  • Locked Locked
  • Replies 3 replies
  • Answers 2 answers
  • Subscribers 33 subscribers
  • Views 254 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

DP83822I: How to use DP83822I test mode

Wayne Wang20
Expert 4380 points
Part Number: DP83822I

Hi team,

My customer is evaluating DP83822I. They noticed that in below register, there are 10Mbps and 100Mbps test mode description.

Can you help explain what is the function of these test mode? When we enable the test mode, will DP83822I automatically send data out? And is this data stream to MAC side or transformer side? Thanks 

Best regards,

Wayne

  • 0
    TI__Genius 16030 points

    Hello Wayne,

    We recommend using following app note for 822 compliance testing :

    https://www.ti.com/lit/pdf/snla266

    --

    Regards,

    Vikram

  • 0 in reply to Vikram Sharma
    TI__Expert 4380 points

    Hi Vikram,

    Thanks for the app note. I read through it but I didn't find any configuration about the 0X0027 register. From my understanding, we can use 0x0027 to program the PHY into a test mode so the PHY can automatically send some specific data pattern out. But I just want to confirm the direction of the data pattern： is it from PHY to MAC or from PHY to RJ45? And do you have any document to guide how to set 0x0027 register to put the PHY in test mode?  Thanks.

    Best regards,

    Wayne

  • 0 in reply to Wayne Wang20
    TI__Genius 16030 points

    Hello Wayne,

    0x0027 is for data towards RJ45. We only have register description of 0x0027 as the required programming details. The app note I shared earlier, is used for compliance testing and not particularly 0x0027. Test hardwares/equipments usually dont need any particular pattern to be sent and they automatically find out the required pattern from data-stream. So you should be good with app note configuration for your compliance testing.

    --

    Regards,

    Vikram