SH7206 Datasheet, PDF (804/1188 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7200 Series

Section 15 Serial Communication Interface with FIFO (SCIF)
• Transmitting Serial Data (Clocked Synchronous Mode)
Figure 15.13 shows a sample flowchart for transmitting serial data.
Use the following procedure for serial data transmission after enabling the SCIF for transmission.
Start of transmission
[1] SCIF status check and transmit data
Read TDFE flag in SCFSR
write:
Read SCFSR and check that the
No
TDFE = 1?
TDFE flag is set to 1, then write
transmit data to SCFTDR, and clear
the TDFE and TEND flags to 0 after
Yes
Write transmit data to SCFTDR
and clear TDFE and TEND flags
in SCFSR to 0 after reading 1
reading 1.
[2] Serial transmission continuation
[1]
procedeure:
To continue serial transmission, read
1 from the TDFE flag to confirm that
No
All data transmitted?
writing is possible, then write data to
SCFTDR, and then clear the TDFE
[2]
Yes
Read TEND flag in SCFSR
No
TEND = 1?
Yes
Clear TE bit in SCSCR to 0
End of transmission
Figure 15.13 Sample Flowchart for Transmitting Serial Data
Rev. 3.00 Jun. 18, 2008 Page 780 of 1160
REJ09B0191-0300