NXP Semiconductors MC9S08SU16 Reference Manual page 15

Section number
15.6 Functional Description..................................................................................................................................................240
15.6.1 Edge-only sensitivity......................................................................................................................................240
15.6.2 Edge and level sensitivity.............................................................................................................................. 240
15.6.3 KBI Pullup Resistor....................................................................................................................................... 240
15.6.4 KBI initialization............................................................................................................................................241
16.1 Chip specific cyclic redundancy check (CRC)............................................................................................................. 243
16.2 Introduction...................................................................................................................................................................243
16.2.1 Features.......................................................................................................................................................... 244
16.2.2 Block diagram................................................................................................................................................ 244
16.2.3 Modes of operation........................................................................................................................................ 244
16.2.3.1
16.2.3.2
16.3 Memory map and register descriptions.........................................................................................................................245
16.3.1 CRC Data register: High 1 (CRC_DH1)........................................................................................................245
16.3.2 CRC Data register: High 0 (CRC_DH0)........................................................................................................246
16.3.3 CRC Data register: Low 1 (CRC_DL1).........................................................................................................247
16.3.4 CRC Data register: Low 0 (CRC_DL0).........................................................................................................247
16.3.5 CRC Polynomial Register: High 1 (CRC_PH1)............................................................................................ 248
16.3.6 CRC Polynomial Register: High 0 (CRC_PH0)............................................................................................ 249
16.3.7 CRC Polynomial Register: Low 1 (CRC_PL1)............................................................................................. 249
16.3.8 CRC Polynomial Register: Low 0 (CRC_PL0)............................................................................................. 250
16.3.9 CRC Control register (CRC_CTRL)..............................................................................................................250
16.4 Functional description...................................................................................................................................................251
16.4.1 CRC initialization/reinitialization.................................................................................................................. 251
16.4.2 CRC calculations............................................................................................................................................252
16.4.2.1
16.4.2.2
NXP Semiconductors
Chapter 16
Cyclic redundancy check (CRC)
Run mode................................................................................................................................... 244
Low-power modes (Wait or Stop)............................................................................................. 245
16-bit CRC................................................................................................................................. 252
32-bit CRC................................................................................................................................. 252
MC9S08SU16 Reference Manual, Rev. 5, 4/2017
Title Page
15