Information
Section Number Title Page
24.4.3 MCG Internal Reference Clocks..................................................................................................................541
24.4.4 External Reference Clock............................................................................................................................542
24.4.5 MCG Fixed Frequency Clock .....................................................................................................................542
24.4.6 MCG PLL Clock .........................................................................................................................................543
24.4.7 MCG Auto TRIM (ATM)............................................................................................................................543
24.5 Initialization / Application Information........................................................................................................................544
24.5.1 MCG Module Initialization Sequence.........................................................................................................544
24.5.2 Using a 32.768 kHz Reference....................................................................................................................546
24.5.3 MCG Mode Switching.................................................................................................................................547
Chapter 25
Oscillator (OSC)
25.1 Introduction...................................................................................................................................................................557
25.2 Features and Modes......................................................................................................................................................557
25.3 Block Diagram..............................................................................................................................................................558
25.4 OSC Signal Descriptions..............................................................................................................................................558
25.5 External Crystal / Resonator Connections....................................................................................................................559
25.6 External Clock Connections.........................................................................................................................................560
25.7 Memory Map/Register Definitions...............................................................................................................................561
25.7.1 OSC Memory Map/Register Definition.......................................................................................................561
25.8 Functional Description..................................................................................................................................................562
25.8.1 OSC Module States......................................................................................................................................562
25.8.2 OSC Module Modes.....................................................................................................................................564
25.8.3 Counter.........................................................................................................................................................566
25.8.4 Reference Clock Pin Requirements.............................................................................................................566
25.9 Reset..............................................................................................................................................................................566
25.10 Low Power Modes Operation.......................................................................................................................................567
25.11 Interrupts.......................................................................................................................................................................567
K10 Sub-Family Reference Manual, Rev. 6, Nov 2011
Freescale Semiconductor, Inc. 21