Renesas H8S Family Hardware Manual page 549

1. Serial reception (LSB first)
7
1 1 1 1 0
F
2. Write H'83 to CRCCR
7
CRCCR 1 0 0
7
0 0 0
CRCDORH
CRCDORL
0 0 0
4. Write H'8F to CRCDIR
7
CRCDIR
1 0 0
7
0 0 0
CRCDORH
CRCDORL
1 1 1
6. Read from CRCDOR
CRC code = H'0000 → No error
CRC code
0
7
1 1
1 1 0 0 0
7 8
0
0 0 0 1 1
CRCDOR clearing
0
0 0 0 0 0
0 0 0 0 0
0
0 1 1 1 1
CRC code generation
0
0 0 0 0 0
1 0 1 1 1
Figure 14.4 LSB-First Data Reception
Section 14 CRC Operation Circuit (CRC)
0
7
1 1 1 1 1 1 1
F F
3. Write H'F0 to CRCDIR
7
CRCDIR 1 1 1
7
1 1 1
CRCDORH
CRCDORL
1 0 0
5. Write H'F7 to CRCDIR
7
CRCDIR
1 1 1
7
0 0 0
CRCDORH
CRCDORL
0 0 0
Rev. 1.00 Mar. 12, 2008 Page 501 of 1178
Data
0
1 0 0 0
0
0
0
1 0 0 0
0
CRC code generation
0
1 0 1 1
1
0 1 1 1
1
0
1 0 1 1 1
CRC code generation
0
0 0 0 0
0
0 0 0 0
0
REJ09B0403-0100
Input