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DDR Stress Test Questions

Question asked by BC Stewart on Nov 27, 2017
Latest reply on Nov 27, 2017 by Yuri Muhin


I am running DDR Stress Tester V2.7 on a iMX6DQ.  I am using the GUI version.

I have some questions.


1.  Both the calibration and stress tests report the CPU clock frequency is 1GHz.  I tried using the pull-down menu to change to 800MHz, but it doesn't change the value in the result window.  I am using a industrial version of iMX6 so max CPU speed is 800MHz.  How can I verify the CPU runs at 800MHz?  Will this affect the calibration values?  Does it matter?


2.  Calibration and Stress report V2.6.  I am using 2.7.  i.MX6/7 DDR Stress Test Tool V3.00 Why is there a difference?  Is it an error?

        DDR Stress Test (2.6.0)
        Build: Aug  1 2017, 17:33:25
        NXP Semiconductors.


3.  What does setting the MR1 value do?  Does it change SRC_SBMR1 or SRC_SBMR2?


4.  Is there more documentation available to explain what some of the numbers mean during calibration and test beyond this post:  i.MX6/7 DDR Stress Test Tool V3.00