I use LPC4357.
I would like to make a sequnce to use IRC as BASE_M4_CLK source until wating PLL 1 to lock.
There are 9 STEP on c hpater 18.104.22.168 of "UM10503".
4.Reconfigure PLL1 as fllows.
5.Wait for the PLL1 to lock.
Could you please tell me how to cancel using crystal oscillator as clock source for PLL1 and go back to use IRC before PLL 1 is locked on STEP5?