SH7604 Datasheet, PDF (384/633 Pages) Hitachi Semiconductor – Hardware Manual

Start reception
Set MPIE bit in SCR to 1
1
Read ORER and FER
bits in SSR
FER = 1 or ORER = 1?
Yes
No
Read RDRF bit in SSR
2
No
RDRF = 1?
Yes
Read receive data in RDR
No
Is ID this
processor’s ID?
Yes
Read ORER and FER
bits in SSR
FER = 1 or ORER = 1?
Yes
No
Read RDRF bit in SSR
4
RDRF = 1?
No
Yes
Read receive data in RDR
No
All data received?
Yes
Clear RE bit in SCR to 0
3
Error handling
End reception
Note: Circled numbers refer to the preceding description of the procedure in the text.
Figure 13.12 Sample Flowchart for Receiving Multiprocessor Serial Data
368