Dear team,
The green color is the signal GND, and the purple color is the isolated GND wiring through the common mode coil output. The PHY mode we use now is SGMII mode. My question is: the wiring trace between the common mode coil and the connector( which will connects other infotainment module) should have a reference ground, which gorund should I choose as the reference ground, the purple one, or the green one? Which reference ground is good for the continuity of the characteristic impedance?
Thanks & Best Regards,
Sherry
