Hi,
You are correct that UART baud rate cannot be increased to 396 MHz because dividers are fixed. However, please note that UART supports baud rates up to 5 Mbps so 80 MHz should be enough to support these baud rates.
Best regards,
Felipe
Hello!
Could you please confirm what clock generation schematic are you referring? You can see register values including CCM (Clock Controller Module) as below in Keil.
Additionally, you can use standalone MCUXpresso Config Tool to see clocks diagram.
MCUXpresso Config Tools|Software Development for NXP Microcontrollers (MCUs) | NXP Semiconductors
Best regards,
Felipe
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here iam changing clock frequencies of peripherals, but does not changed. Even iam using MCUXpresso and keil programming but does not effect.
FOR Example: LPUART1
By default 80MHz , in MCUxpress tool it shows locked state. I need to change 396 MHz.
And also i tried change clock root for UART direct taken from PLLPFD2(396MHz) but does not changes.
Please share clock configuration modifications in keil otherwise MCUXpresso
LPUART have 2 soruces only: Any clock source given or not for required 396 MHz otherwise maximum LPUART's clock was 80MHz
Hi,
You are correct that UART baud rate cannot be increased to 396 MHz because dividers are fixed. However, please note that UART supports baud rates up to 5 Mbps so 80 MHz should be enough to support these baud rates.
Best regards,
Felipe