Hello Team,
Customer used a Tektronix oscilloscope to conduct an Ethernet Compliance Test, and the following two test conditions exceeded the specified range limits. For the application of the DP83822HRHBR PHY IC, can we adjust the drive strength through the DSP (28388)? Or something improvement on layout or transformer.
Ethernet Compliance Test shows that the following two test conditions exceeded the specified range:
- 100 Base-TX, UTP +Vout Differential Output Voltage: 950.0 mV < VALUE < 1.0500 V
- 100 Base-TX, UTP -Vout Differential Output Voltage: 950.0 mV < |VALUE| < 1.0500 V
- 100 Base-TX, UTP Signal Amplitude Symmetry: 980 m < |VALUE| < 1.020
DSP: F28388
PHY: DP83822I
Ethernet Cable: 50cm/Cat 5e
Regards
Brian
