topic iMX7D : about ECSPIx_CLK_ROOT specification in i.MX Processors

iMX7D : about ECSPIx_CLK_ROOT specification

koichisakagami — Thu, 18 Aug 2016 00:35:27 GMT

Dear community,
We have been developing our product with iMX7D.

I have a question about ECSPIx_CLK_ROOT jitter.

In Data sheet IMX7DCEC Rev. 2, 4.4 PLL electrical characteristics,
it is not described the PLL jitter specification.

[Question]
Please tell me the PLL jitter specification.

Best Regards,
Koichi Sakagami

igorpadykov — Thu, 18 Aug 2016 03:32:57 GMT

Hi Koichi

1. ECSPIx_CLK_ROOT jitter is not much affected by PLLs jitter, as

PLLs jitter is averaged on many PLLs cycles, since ECSPI clock is less

frequency than PLL.

2. ECSPIx_CLK_ROOT and PLLs jitter are not specified by datasheet,

if you have special reasons for obtaining it, please escalate your

requirements through local fae channel.

Best regards

igor

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koichisakagami — Fri, 19 Aug 2016 09:40:26 GMT

Dear igor san,

Thank you for your advice.
I will consider them.

Best Regards
Koichi Sakagami