R5S72611 RENESAS [Renesas Technology Corp], R5S72611 Datasheet - Page 752

• Manufacturer Part Number: R5S72611
• Description: 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7260 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

Section 16 Serial Communication Interface with FIFO (SCIF)
• Transmitting Serial Data (Clocked Synchronous Mode)
Figure 16.11 shows a sample flowchart for transmitting serial data.
Use the following procedure for serial data transmission after enabling the SCIF for transmission.
Rev. 2.00 Sep. 07, 2007 Page 720 of 1312
REJ09B0320-0200
TEND flags in SCFSR, then clear
Write transmit data to SCFTDR
Read TEND flag in SCFSR
Clear TE bit in SCSCR to 0
Read TDFE flag in SCFSR
and read 1 from TDFE and
Figure 16.11 Sample Flowchart for Transmitting Serial Data
All data transmitted?
Start of transmission
End of transmission
these flags to 0
TEND = 1?
TDFE = 1?
Yes
Yes
Yes
No
[1]
No
No
[2]
[1]
[2]
SCIF status check and transmit data write:
Read SCFSR and check that the
TDFE flag is set to 1, then write
transmit data to SCFTDR, and read 1
from the TDFE and TEND flags, then
clear these flags to 0.
Serial transmission continuation procedeure:
To continue serial transmission, read
1 from the TDFE flag to confirm that
writing is possible, then write data to
SCFTDR, and then clear the TDFE
flag to 0.