SH7014 Datasheet, PDF (393/754 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer

12. Serial Communication Interface (SCI)
Error handling
Overrun error processing
Clear ORER bit of SSR to 0
End
Figure 12.18 Sample Flowchart for Serial Receiving (2)
Figure 12.19 shows an example of the SCI receive operation.
Transfer direction
Synchroni-
zation clock
Serial
data
RDRF
Bit 7 Bit 0
Bit 7 Bit 0 Bit 1
Bit 6 Bit 7
ORER
RXI request
Read data with RXI
interrupt processing
routine and clear
RDRF bit to 0
1 frame
RXI request
ERI interrupt
request generated
by overrun error
Figure 12.19 Example of SCI Receive Operation
Rev.5.00 Sep. 27, 2007 Page 359 of 716
REJ09B0398-0500