Dear Team,
My customer is evaluating DP83867IRRGZT on their trial board. When they measured EMI of the trial board, there was 125MHz EMI noise on it. When they unplugged LAN cable, that 125MHz EMI noise was reduced. Then, they judged that it to be the DP83867IR application related noise.
I asked them to try to disable CLK_OUT by CLK_O_DISABLE = 1 (= Disable clock output on CLK_OUT pin), but the 125MHz EMI noise was not reduced.
Could you suggest me which part of the DP83867IR application to check to reduce the 125MHz EMI noise?
Thank you.
Best Regards,
Koshi Ninomiya