HD6417751RBP240V Datasheet, PDF (751/1226 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

15. Serial Communication Interface (SCI)
Receive data full interrupt generated
Yes
User-defined receive start flag = 1?
No
Read ORER and FER flags in SCSSR1
Yes
FER or ORER = 1 ?
No
Read RDRF flag in SCSSR1
No
MPIE = 0 ?
Yes
Read receive data in SCRDR1
Set RDRF = 0 and MPIE = 1
No
This station's ID?
Yes
Set user-defined receive start flag to 1
End of ID reception handling
Read ORER and FER flags in SCSSR1
Yes
FER or ORER = 1?
No
Read receive data in SCRDR1
No
All data received?
Yes
Clear user-defined receive start flag to 0
RTE
End of data reception
Error handling
Figure 15.15 Sample Flowchart of Multiprocessor Serial Reception with Interrupt
Generation
Figure 15.16 shows a sample flowchart of multiprocessor serial reception. To perform
multiprocessor serial reception, first enable the SCI for data reception and then follow the
procedure shown below.
Rev.4.00 Oct. 10, 2008 Page 651 of 1122
REJ09B0370-0400