DP83822I: Why DP83822I recieve wrong package when DP83822I working on communication.

Eggsy Pang

Part Number: DP83822I

Hi team,

My customer use DP83822I phy in their system. Why DP83822I recieve wrong package when DP83822I worikng on communication. Most time it recieve wrong package but some time recieve right package.

We read all DP83822I register by MDIO. like below pic. Do you have any suggestions?

We also check the hardware, and we also let INT/PWDN_N pull up. But it stlll not be dealt with. Do you have any suggestions?

Thanks!

Below is register and SCH.

SCH:

INTERFACEBOARD (1).pdf

over 5 years ago

0 Cecilia Reyes over 5 years ago

TI__Genius 9920 points

Hello,

Do you have the full schematic and pinout for the DP83822? I can only see the pinouts for MII in this portion.

Thanks,

Cecilia

0 Eggsy Pang over 5 years ago in reply to Cecilia Reyes

TI__Expert 4985 points

Hi Cecilia,

MII is connect to FPGA directly and there are not Series resistance in MII line.

The MII signal traces long is 8 inches between FPGA and PHY.Is this information enough?

Thanks!

Interface

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DP83822I: Why DP83822I recieve wrong package when DP83822I working on communication.