HD6437020 Datasheet, PDF (386/507 Pages) Hitachi Semiconductor – SuperH™ RISC engine

Initialization
(1)
Start receiving
Read the ORER, PER, and
FER bits of the SSR
Yes
PER, FER, ORER = 1?
No
Read the RDRF bit of the SSR (3)
(2)
Error handling
No
RDRF = 1?
Yes
Read the RDR's receive data
and clear the SSR's RDRF bit to 0
(4)
No
Total count received?
Yes
Clear the RE bit of the SCR to 0
Reception ends
Note: Circled numbers refer to the preceding procedure.
Figure 13.7 Sample Flowchart for Receiving Serial Data
HITACHI 373