SH7730 Datasheet, PDF (861/1188 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7780 Series

Section 24 IrDA Interface (IrDA)
(4) IrDA Reception (CRC Calculation) Flow
Flowchart
Start
Make settings in IRIF_CRC0
Setting in IrDA
Initialize CRC engine.
IrDA Operation
Make settings in IRIF_CRC1
No
All data (including CRC data)
transferred?
Yes
Read IRIF_CRC0
Read IRIF_CRC4
Specify input data
for CRC engine.
When another CRC data
should be input to CRC engine,
prepare the next input data.
Read value from CRC engine
input data byte counter.
Read CRC calculation result.
CRC calculation
No
result == expected value?
Check CRC value.
Yes
End
Error processing
Figure 24.12 IrDA Reception (CRC Calculation) Flow
Rev. 1.00 Sep. 19, 2007 Page 813 of 1136
REJ09B0359-0100