SH7032 Datasheet, PDF (417/687 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer

Section 13 Serial Communication Interface (SCI)
Initialize
(1)
Start transmitting
Read TDRE bit in SSR (2)
No
TDRE = 1?
Yes
Write transmit data in TDR
and set MPBT in SSR
Clear TDRE bit to 0
All data transmitted?
No (3)
Yes
Read TEND bit in SSR
TEND = 1?
No
Yes
Output break signal?
Yes
Set DR = 0
No
(4)
Clear TE bit to 0 in SCR;
select theTxD pin function as
an output port with the PFC
End
Figure 13.10 Sample Flowchart for Transmitting Multiprocessor Serial Data
Rev. 7.00 Jan 31, 2006 page 391 of 658
REJ09B0272-0700