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iMX7D :  External clock input timing

Question asked by koichi sakagami on Aug 8, 2016
Latest reply on Aug 8, 2016 by igorpadykov

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.


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