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Disappeaed a result of DDR Calibration test

Question asked by ko-hey on Feb 2, 2020
Latest reply on Feb 12, 2020 by ko-hey
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Hi all,

 

My customer evaluate their board and try to fix DDR calibration values.

They tried several times in some boards and found some results is disappeared in calibration test.

i.MX6/7 DDR Stress Test Tool V3.00 

 

As you can see in calibration_ubnormal.txt, the test result of "loop ABS offset to get HW_DG_LOW" is lack.

 

Q1.

Is there any reason of the result ?

 

Q2.

Is there any possibility of somethings is wrong with the board ?

 

Ko-hey

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