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

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

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yuuki
Senior Contributor II

Dear all,

I am referring to the following part.

IMX6SDLRM.pdf (Rev1):

- 45.11.2.1.1 ZQ automatic Pull-up calibration
- 45.11.2.1.2 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,

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Yuri
NXP Employee
NXP Employee

Default value of MPZQSWCTRL[ZQ_CMP_OUT_SMP] may be used.


Have a great day,
Yuri

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