State Machine

The DDR3 Soft Controller core starts initialization when you assert the reset_n signal. Next, the core runs the auto-calibration process if you enable the auto-calibration (cal_ena=1) function. See Input Auto-Calibration for more information about the auto-calibration process. When the core receives a write or read request, the arbiter prioritizes either read or write based on the arbiter parameter settings you set. The core then sends the command to the DDR3 SDRAM.