SH7720 Datasheet, PDF (691/1524 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7700 Series

Section 18 Serial Communication Interface with FIFO (SCIF)
(4) Data Transfer Operations (Serial Data Transmission)
Figure 18.14 shows sample flowcharts for serial transmission.
Start of transmission
Write remaining transmit data to SCFTDR 1
Set TE bit in SCSCR
When using transmit FIFO data interrupt, 2
set TIE bit to 1
1. Write the remaining transmit
data to SCFTDR.
2. Transmission is started when
the TE bit in SCSCR is set to 1.
3. After the end of transmission,
clear the TE bit to 0.
TEND =1?
No
Yes
Clear TE bit in SCSCR to 0
3
End of transmission
Figure 18.14 Sample Serial Transmission Flowchart (1)
(First Transmission after Initialization)
Rev. 3.00 Jan. 18, 2008 Page 629 of 1458
REJ09B0033-0300