I want to set the PLL0_PHI to 1 MHz with a 10MHz XOSC.
My code is as follows:
/* Configure PLL0 to 1 MHz with a 10MHz XOSC. */
PLLDIG.PLL0DV.B.RFDPHI1 = 10;
PLLDIG.PLL0DV.B.RFDPHI = 20;
PLLDIG.PLL0DV.B.PREDIV = 5;
PLLDIG.PLL0DV.B.MFD = 10;
// Mode Transition to enter RUN0 mode:
MC_ME.MCTL.R = 0x40005AF0; // Enter RUN0 Mode & Key
MC_ME.MCTL.R = 0x4000A50F; // Enter RUN0 Mode & Inverted Key
while (MC_ME.GS.B.S_MTRANS) {}; // Wait for mode transition to complete
while(MC_ME.GS.B.S_CURRENT_MODE != 4) {}; // Verify RUN0 is the current mode
When I debug the code, I find that the program stops at the following line:
while (MC_ME.GS.B.S_MTRANS) {}; // Wait for mode transition to complete
which means the mode transition to RUN0 never completes
But when I change the number of PLLDIG to
PLLDIG.PLL0DV.B.RFDPHI1 = 4;
PLLDIG.PLL0DV.B.RFDPHI =4;
PLLDIG.PLL0DV.B.PREDIV = 1;
PLLDIG.PLL0DV.B.MFD = 16;
the program has no problem.
I wonder what's wrong with my previous code? Is there any regulations about the PLLDIG register I don't know?
Thank you.
