SH7708 Datasheet, PDF (386/625 Pages) Renesas Technology Corp – SuperH™ RISC engine

Start transmission
Read TDRE bit in SCSSR
(1)
No
TDRE = 1?
Yes
Write transmission data to TDR
and set MPBT bit in SCSSR
Clear TDRE bit to 0
Transmission ended?
Yes
Read TEND bit in SCSSR
No ₍₂₎
TEND = 1?
No
Yes
No
Break output?
Yes ⁽³⁾
Clear SPB0DT to 0,
set SPB0IO to 1
Clear TE bit SCSCR to 0
End transmission
Figure 13.10
Note: Circled numbers refer to the preceding procedure.
Sample Flowchart for Transmitting Multiprocessor Serial Data
372