iMXRT1064 ADC asynchronous clock frequency?

[johnpulera]

Hello,

I have a question pertaining to the asynchronous clock source in the ADC peripheral of the iMXRT1064 (ADCx_CFG.ADICLK = 11b). The reference manual states that the asynchronous clock is “generated from a clock source within the ADC module”, but what exactly is the value of fADCK if I choose this clock source? I’d like to know what value it is for purposes of calculating the conversion time.

Thanks,

John

[jeremyzhou · Accepted solution]

Hi John Pulera，

Thank you for your interest in NXP Semiconductor products and
for the opportunity to serve you.
Please check the Fig 1.

Fig 1

Have a great day,
TIC

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[johnpulera]

Hi Jeremy,

Thanks for your prompt reply. So, just to confirm my understanding, fADACK is either 10MHz or 20MHz based on ADHSC setting, regardless of the IPG Clock frequency and divider settings. Is this correct?

Thanks,

John

[jeremyzhou]

Hi John Pulera，

Thanks for your reply.

Yes, you're right.

Have a great day,
TIC

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Note:
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- We are following threads for 7 weeks after the last post, later replies are ignored
Please open a new thread and refer to the closed one, if you have a related question at a later point in time.
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