topic Re: CLKOUT clock configuration LPC546xx in LPC Microcontrollers

CLKOUT clock configuration LPC546xx

sergeylozhechka — Tue, 27 Apr 2021 12:01:10 GMT

Dear collogues.

I would like to ask you for some help with understanding the following situation.

Setup description:

I am using LPC54607J512 with external oscillator equal to 12MHz.

My task right now is to route ExtOsc to CLKOUT that I have done but for some reason I am being experienced with strange behavior of I2C on flexcomm 2.

When I commented CLKOUT routing I got correct I2C communication.

For more details look at the attachment to this post.

P.s. Channel 2 is CLKOUT signal.

Thank you in advance.

Re: CLKOUT clock configuration LPC546xx

sergeylozhechka — Wed, 28 Apr 2021 05:55:59 GMT

Good morning.

I would like to share with you new finding related to the issue.

Mystery has been discovered and root course of the issue is misfunctioning of logical analyzer and results on the screen.

Re: CLKOUT clock configuration LPC546xx

Omar_Anguiano — Wed, 28 Apr 2021 18:49:35 GMT

Hello

Hope you are well. Is good to know that you found the cause of the issue.
If you have more questions, please let me know.

Best regards,
Omar