Recently for a design I had used STM32 MPU (part# "STM32MP157FAA1") with DDR3L (part# "NT5CC256M16ER-EK"). For simulating data & address lines from a IBIS model of STM32 "ibis5_4gbddr3_e_1p35_0c~95c.ibs" in ANSYS for 500MHz frequency the source transmitter eye waveform itself doesn't look proper. Attached the parameter setup and also the eye diagram waveform image for one of the data lines for reference.
What would be the cause of this distorted signal from the source itself?
