Currently in our custom design we are using LS1021A processor for this we are using two different DDR part number, and tRCD,tRP(min) is 12.5 for one DDR3(part number: IS43TR16640C-125JBLI) and tRCD,tRP(min) is 13.75 for another DDR3L(part number:IS43TR16128CL-125KBLI).
In general standard voltage for DDR3 VDD and VDDQ should be 1.5V and DDR3L VDD & VDDQ should be 1.35V is this right?
If we are using two different DDR parts so how to do DDR calibration with this, i have gone through the QCVS DDR Tool User Guide. but i couldn't get any information with two different ddr parts.
thanks in advance,
Ramesha S P