SH7020 Datasheet, PDF (396/509 Pages) Renesas Technology Corp – SuperH™ RISC engine

Initialization
(1)
Start receiving
Set the MPIE bit of the SCR to 1 (2)
Read the ORER and FER
bits of the SSR
FER = 1? or ORER = 1?
Yes
No
Read the RDRF bit of the SSR (3)
No
RDRF = 1?
Yes
Read the receive data of the RDR
No
Own ID?
Yes
Read the ORER and FER
bits of the SSR
FER = 1? or ORER = 1?
Yes
No
Read the SSR's RDRF bit (5)
RDRF = 1?
No
Yes
Read the RDR's receive data
No
Total count received?
(4)
Error handling
Yes
Clear the RE bit of the SCR to 0
Reception ends
Figure 13.12 Sample Flowchart for Receiving Multiprocessor Serial Data
RENESAS 381