SH7052 Datasheet, PDF (518/919 Pages) Renesas Technology Corp – SuperHTM RISC engine

Error handling
Overrun error handling
Clear ORER bit in SSR to 0
End
Figure 14.22 Sample Flowchart for Serial Receiving (2)
Figure 14.23 shows an example of the SCI receive operation.
Transfer direction
Serial clock
Serial
data
Bit 7 Bit 0
Bit 7 Bit 0 Bit 1
Bit 6 Bit 7
RDRF
ORER
RXI interrupt
request
Read data with RXI
interrupt processing
routine and clear
RDRF bit to 0
1 frame
RXI interrupt
request
ERI interrupt
request generated
by overrun error
Figure 14.23 Example of SCI Receive Operation
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