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About the value of MPZQSWCTRL [ZQ_CMP_OUT_SMP] of i.MX6Solo

Question asked by yuuki on Jun 12, 2014
Latest reply on Jun 19, 2014 by Yuri Muhin

Dear all,


I am referring to the following part.

IMX6SDLRM.pdf (Rev1):

- ZQ automatic Pull-up calibration
- ZQ automatic Pull-down calibration


The following contents are explained to these sequences.
"MMDC waits few cycles according to MPZQSWCTRL[ZQ_CMP_OUT_SMP] before sampling the comparator output (i.e zq_comp_out)."


We do not understand the value which should be set as ZQ_CMP_OUT_SMP field.


What becomes a standard in order to choose this value?
When this value is too small, what kind of problem occurs?


May I have advice?


Best Regards,