Dear Kevin,
Theoretically speaking, if the only difference from the regular DDR3 is the power rail voltage, then the Vybrid SDRAM controller, capable of working at 1.2V and 1.5V, works at any value inside this range. And the DDR_REF (logic threshold) is defined externally - at the level of 1/2 of the actual power rail value. So, the answer at the first glance is "yes".
At the same time, the Vybrid datasheet does not contain any detailed data for this power voltage value due to that it has not been validated for it. Based on the common industry practice, if a requirement for a new use-case comes from the field and triggers additional validation effort on our side, it has to first be approved by the Marketing team based on the prospective sales numbers to those interested in this use-case, etc.
Without that, unfortunately, a user will have to run this mode on his own risk.
sincerely, Naoum Gitnik.
