NXP Semiconductors K22F series - Page 20

Section number Title Page
25.3.6 MCG Control 6 Register (MCG_C6)...........................................................................................................549
25.3.7 MCG Status Register (MCG_S).................................................................................................................. 551
25.3.8 MCG Status and Control Register (MCG_SC)............................................................................................552
25.3.9 MCG Auto Trim Compare Value High Register (MCG_ATCVH)............................................................ 554
25.3.10 MCG Auto Trim Compare Value Low Register (MCG_ATCVL)..............................................................554
25.3.11 MCG Control 7 Register (MCG_C7)...........................................................................................................554
25.3.12 MCG Control 8 Register (MCG_C8)...........................................................................................................555
25.3.13 MCG Control 12 Register (MCG_C12).......................................................................................................556
25.3.13 MCG Status 2 Register (MCG_S2)............................................................................................................. 556
25.3.13 MCG Test 3 Register (MCG_T3)................................................................................................................ 557
25.4 Functional description...................................................................................................................................................557
25.4.1 MCG mode state diagram............................................................................................................................ 557
25.4.2 Low-power bit usage....................................................................................................................................561
25.4.3 MCG Internal Reference Clocks..................................................................................................................561
25.4.4 External Reference Clock............................................................................................................................ 562
25.4.5 MCG Fixed Frequency Clock .....................................................................................................................563
25.4.6 MCG PLL clock ..........................................................................................................................................563
25.4.7 MCG Auto TRIM (ATM)............................................................................................................................563
25.5 Initialization / Application information........................................................................................................................ 564
25.5.1 MCG module initialization sequence...........................................................................................................564
25.5.2 Using a 32.768 kHz reference......................................................................................................................567
25.5.3 MCG mode switching.................................................................................................................................. 567
Chapter 26
Oscillator (OSC)
26.1 Introduction...................................................................................................................................................................577
26.2 Features and Modes...................................................................................................................................................... 577
26.3 Block Diagram..............................................................................................................................................................578
26.4 OSC Signal Descriptions.............................................................................................................................................. 578
26.5 External Crystal / Resonator Connections.................................................................................................................... 579
K22F Sub-Family Reference Manual, Rev. 4, 08/2016
20 NXP Semiconductors