SH7014 Datasheet, PDF (382/754 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer

12. Serial Communication Interface (SCI)
Initialization
1
Start reception
Set MPIE bit in SCR to 1
2
Read ORER and FER bits of SSR
FER = 1?
Yes
or ORER =1?
No
Read RDRF bit in SSR
3
No
RDRF = 1?
Yes
Read receive data from RDR
No
Is ID the station's ID
Yes
Read ORER and FER bits in SSR
FER = 1?
Yes
or ORER =1?
No
Read RDRF bit of SSR
5
RDRF = 1?
No
Yes
Read receive data from RDR
No
All data received?
Yes
Clear RE bit in SCR to 0
End reception
4
Error processing
Figure 12.12 Sample Flowchart for Receiving Multiprocessor Serial Data (1)
Rev.5.00 Sep. 27, 2007 Page 348 of 716
REJ09B0398-0500