Users Manual

Table Of Contents
R01UH0823EJ0110 Rev.1.10 Page 1426 of 1852
Nov 30, 2020
RX23W Group 39. CRC Calculator (CRC)
Figure 39.5 MSB First Data Reception
Input
0FF1FE
111100 00 111011
1100011111
CRC code
1. 8-bit serial reception (MSB first)
6. Read the calculation result in the CRC data output register (CRCDOR)
CRC code = 0000h
no error
Data
7
0
7
0
7
0
CRCCR
CRCDOR
Clear CRCDOR
100001 11
000000 00 000000 00
CRCDIR
111100 00
111011 1
1
000111 1
1
111011 11
000111 11 000000 00
000111 1
1
7
0
70
7
0
7
0
70
70
70
70
CRC code generation
2. Write 87h to the CRC control register (CRCCR)
3. Write F0h to the CRC data input register (CRCDIR)
4. Write EFh to the CRC data input register (CRCDIR)
5. Write 1Fh to the CRC data input register (CRCDIR)
CRCDIR
CRCDIR
000000 00 000000 00
CRC code generation
CRC code generation
815
15
15
15
8
8
8
CRCDOR
CRCDOR
CRCDOR