Can NVCC_PLL_OUT be used as a power supply of an external oscillator?

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Can NVCC_PLL_OUT be used as a power supply of an external oscillator?

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george
Senior Contributor I

Dear All,

In i.MX6 Solo.

My customer uses a 24MHz external oscillator, and inputs and has the signal to XTALI.

And they will connect an oscillator output to a XTALI input pin.

In this case, can NVCC_PLL_OUT be used as a power supply for an oscillator?

Current needed for the oscillator is about 2.5mA~4.5mA.

Or should a power supply be prepared independently?

Best Regards,

George

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igorpadykov
NXP TechSupport
NXP TechSupport

Hi George

I am afraid such schematic is not available.

Probably one can use NVCC_PLL_OUT as reference

voltage using external analog comparator.

Best regards

chip

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igorpadykov
NXP TechSupport
NXP TechSupport

Hi George

not, it can not be used.

From Table 2-6. Power and decouple recommendations p.20

IMX6DQ6SDLHDG

IMX6DQ6SDLHDG, Hardware Development Guide

"These LDOs should only be used to power the loads as

described in the reference manual or data sheet. Do not

connect any loads to these LDO outputs:"

Best regards

chip

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george
Senior Contributor I

Dear chip,

OK.

Please let me know the recommendation schematics in the case of using an external oscillator.

Best Regards,

George

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igorpadykov
NXP TechSupport
NXP TechSupport

Hi George

I am afraid such schematic is not available.

Probably one can use NVCC_PLL_OUT as reference

voltage using external analog comparator.

Best regards

chip

View solution in original post

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201 Views
george
Senior Contributor I

Thanks, chip

BR,

George

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