Recently, we have changed imx53's DDR from DDR3-1333 to DDR3-1666. I had some questions about the ESDCTL setting in imx53RM.pdf.
the ESDCTL_ESDOTC register, bit[29-27]:tAOFPD, the unit is cycle ; but bit[23-20] tANPD, the unit is clock .
I don't konw what is the different between cycle and clock .
who can help me !