If the DDR2 interface is operated with a clock frequency less than 266 MHz, lower-speed grade DDR2 devices may be used if the minimum clock period specified for the DDR2 device is less than or equal to the minimum clock period selected for the AM335x DDR2 interface.
Higher DDR2 speed grades are supported due to inherent JEDEC DDR2 backward compatibility.
92-terminal devices are also supported for legacy reasons. New designs will migrate to 84-terminal DDR2 devices. Electrically, the 92- and 84-terminal DDR2 devices are the same.