I am using the LPC54606J512 processor with an external 12MHz crystal.
IDE is MCUXpresso v10.2.1
See also attached files for clock_config.
See clock_config.h lines 45,46,47 to set for 48MHz I comment out lines 46 & 47, To set for 180MHz I comment out Lines 45 & 46.
In clock_config.c the function void BOARD_BootClockPLL180M(void) has been modded based on the original code and a version found on the internet. NB Line 282 is commented out because it causes the processor to stop dead.
In the main body of the code I am toggling a GPIO pin in order to determine how much time a particular function is taking.
When set to 48MHz the function takes 45mS,
at 96MHz it takes 53mS
at 180MHz it takes 110mS.
In other words setting a higher frequency makes the thing run slower !!
Do I have the latest (and correct) clock_config files for the 54606?