R01UH0822EJ0100 Rev.1.00
Page 805 of 1041
Jul 31, 2019
RX13T Group
25. CRC Calculator (CRC)
Figure 25.5
MSB First Data Reception
Input
0
F
F
1
F
E
1
1
1
1
0
0
0
0
1
1
1
0
1
1
1
1
0
0
0
1
1
1
1
1
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
1
0
0
0
0
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
CRCDIR
1
1
1
1
0
0
0
0
1
1
1
0
1
1
1
1
0
0
0
1
1
1
1
1
1
1
1
0
1
1
1
1
0
0
0
1
1
1
1
1
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
7
0
7
0
7
0
7
0
7
0
7
0
7
0
7
0
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
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
CRC code generation
CRC code generation
8
15
15
15
15
8
8
8
CRCDOR
CRCDOR
CRCDOR