NXP Semiconductors K22F series - Page 25

Section number Title Page
31.4.13 Extended Transfer Start/Address Latch Enable...........................................................................................737
31.4.14 Bus errors..................................................................................................................................................... 738
31.5 Initialization/Application Information..........................................................................................................................739
31.5.1 Initializing a chip-select...............................................................................................................................739
31.5.2 Reconfiguring a chip-select......................................................................................................................... 739
Chapter 32
Cyclic Redundancy Check (CRC)
32.1 Introduction...................................................................................................................................................................741
32.1.1 Features........................................................................................................................................................ 741
32.1.2 Block diagram..............................................................................................................................................741
32.1.3 Modes of operation...................................................................................................................................... 742
32.2 Memory map and register descriptions.........................................................................................................................742
32.2.1 CRC Data register (CRC_DATA)............................................................................................................... 743
32.2.2 CRC Polynomial register (CRC_GPOLY).................................................................................................. 744
32.2.3 CRC Control register (CRC_CTRL)............................................................................................................744
32.3 Functional description...................................................................................................................................................745
32.3.1 CRC initialization/reinitialization................................................................................................................745
32.3.2 CRC calculations..........................................................................................................................................746
32.3.3 Transpose feature......................................................................................................................................... 747
32.3.4 CRC result complement...............................................................................................................................749
Chapter 33
Random Number Generator Accelerator (RNGA)
33.1 Introduction...................................................................................................................................................................751
33.1.1 Overview......................................................................................................................................................751
33.2 Modes of operation....................................................................................................................................................... 752
33.2.1 Entering Normal mode.................................................................................................................................752
33.2.2 Entering Sleep mode.................................................................................................................................... 752
33.3 Memory map and register definition.............................................................................................................................753
33.3.1 RNGA Control Register (RNG_CR)........................................................................................................... 753
K22F Sub-Family Reference Manual, Rev. 4, 08/2016
NXP Semiconductors 25