Frequency Modulated Phase Locked Loop and System Clocks (FMPLL)
MPC5565 Microcontroller Reference Manual, Rev. 1.0
11-32
Freescale Semiconductor
Figure 11-12. FM Auto-Calibration Flow Chart
Count M reference clock cycles.
CALX = value in feedback counter
Allow system 3 x 384 reference
counts to settle
CAL[N] = 1
Enable FM. N = 7
Count M reference clock cycles.
Store value of feedback
Counter in CAL[0]
Enter calibration mode;
Set PCALPASS = 1
Let DIFF = CALX-CAL0
DIFF > 0
?
Yes
Let ERR = DIFF - EXP
ERR > 0
?
No
A
CAL[N] = 0
Yes
PCALPASS = 0
No
A
N = 0
?
No
Yes
N = N-1
CALDONE = 1
DONE
For MFD = 0 to 2: M = 960
For MFD = 3 to 5: M = 640
For MFD = 6 to 8: M = 480
For MFD = 9 to 14: M = 320
For MFD = 15 to 20: M = 240
For MFD = 21 to 31: M = 160
Summary of Contents for MPC5565
Page 18: ...MPC5565 Microcontroller Reference Manual Devices Supported MPC5565 MPC5565 RM Rev 1 0 09 2007...
Page 34: ...MPC5565 Reference Manual Rev 1 0 Freescale Semiconductor 15...
Page 35: ...MPC5565 Reference Manual Rev 1 0 16 Freescale Semiconductor...
Page 553: ...Flash Memory MPC5565 Microcontroller Reference Manual Rev 1 0 13 38 Freescale Semiconductor...
Page 559: ...SRAM MPC5565 Microcontroller Reference Manual Rev 1 0 14 6 Freescale Semiconductor...
Page 973: ...Preface MPC5565 Microcontroller Reference Manual Rev 1 0 21 36 Freescale Semiconductor...
Page 1153: ...Calibration MPC5565 Microcontroller Reference Manual Rev 1 0 B 8 Freescale Semiconductor...