topic iMX7D : External clock input timing in i.MX Processors

iMX7D : External clock input timing

koichisakagami — Mon, 08 Aug 2016 08:59:49 GMT

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

I have a question about iMX7D inputting clock timing.

In Data sheet IMX7DCEC Rev. 2 , 4.2.1 Power-up sequence,
it is described that the power-up sequence about POR_B and VDD_xxx signal are defined.
But the 24MHz and 32kHz external clock signal sequence are not defined.

[Question]
In the case of using an external oscillator instead of crystal,
Could you teach me the timing to begin feeding the clock signal to iMX7 ?

Best Regards,
Koichi Sakagami

Re: iMX7D : External clock input timing

igorpadykov — Mon, 08 Aug 2016 10:52:49 GMT

Hi Koichi

clock can be provided simultaneously with power for oscillator circuits:

VDD_SNVS for 32kHz and VDD_XTAL_1P8 for 24MHz.

Best regards

igor

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