Device Family: Arria® V ST, Arria® V SX, Cyclone® V SE, Cyclone® V ST, Cyclone® V SX
Type: Answers, Errata
Area: EMIF, Intellectual Property
IP Product: DDR3 SDRAM Controller MegaCore supporting UniPHY
When comparing the DQ waveforms, you may notice that the measured steady-state read waveform amplitude exceeds the expected value simulated by the IBIS model. This is due to an adjustment of the Rt termination value by the Quartus® II software where the equivalent resistance is higher than expected.