
ML62Q1000 Series User's Manual
Chapter 19 CRC Generator
FEUL62Q1000
19-12
19.3 Description of Operation
Two modes are available for the CRC calculator: manual CRC calculation mode and automatic CRC calculation mode.
•
Manual CRC Calculation Mode
CRC calculation is executed by hardware as needed through writing data to the CRC calculation register using
software.
Calculation unit: 8-bit.
•
Automatic CRC Calculation Mode
In the HALT/HALT-H mode, data in the program memory area is automatically CRC-calculated by hardware.
Calculation unit: 32-bits with the interrupt generated when the automatic CRC calculation is completed.
19.3.1 Manual CRC Calculation Mode
In the manual CRC calculation mode, the calculation result is output to the CRC calculation result register (CRCRES) by
writing the initial value to the 16-bit CRC calculation result register (CRCRES) then writing data to 8-bit CRC
calculation data register (CRCDATA). For data error detection in serial communication, etc., presence of errors can be
detected by transferring data with the calculation result attached when transmission and performing the same CRC
calculation in the reception side.
In the program operation mode (CPU instruction execution mode), the calculation is always executed in the manual CRC
calculation mode.
Содержание ML62Q1000 Series
Страница 17: ...Chapter 1 Overview...
Страница 112: ...Chapter 2 CPU and Memory Space...
Страница 154: ...Chapter 3 Reset Function...
Страница 166: ...Chapter 4 Power Management...
Страница 196: ...Chapter 5 Interrupts...
Страница 248: ...Chapter 6 Clock generation Circuit...
Страница 274: ...Chapter 7 Low Speed Time Base Counter...
Страница 291: ...Chapter 8 16 Bit Timer...
Страница 320: ...Chapter 9 Functional Timer FTM...
Страница 382: ...Chapter 10 Watchdog Timer...
Страница 402: ...Chapter 11 Serial Communication Unit...
Страница 456: ...Chapter 12 I2 C Bus Unit...
Страница 491: ...Chapter 13 I2 C Master...
Страница 512: ...Chapter 14 DMA Controller...
Страница 531: ...Chapter 15 Buzzer...
Страница 550: ...Chapter 16 Simplified RTC...
Страница 559: ...Chapter 17 GPIO...
Страница 594: ...Chapter 18 External Interrupt Function...
Страница 612: ...Chapter 19 CRC Generator...
Страница 632: ...Chapter 20 Analog Comparator...
Страница 644: ...Chapter 21 D A Converter...
Страница 655: ...Chapter 22 Voltage Level Supervisor...
Страница 676: ...Chapter 23 Successive Approximation Type A D Converter...
Страница 709: ...Chapter 24 Regulator...
Страница 714: ...Chapter 25 Flash Memory...
Страница 743: ...Chapter 26 Code Option...
Страница 750: ...Chapter 27 LCD Driver...
Страница 788: ...Chapter 28 On Chip Debug Function...
Страница 795: ...Chapter 29 Safety Function...
Страница 813: ...Appendix A...
Страница 881: ...Revision History...