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SH7261 Datasheet(PDF) 752 Page - Renesas Technology Corp

Part # SH7261
Description  32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7260 Series
PDF  1348 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

SH7261 Datasheet(HTML) 752 Page - Renesas Technology Corp

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Section 16 Serial Communication Interface with FIFO (SCIF)
Rev. 2.00 Sep. 07, 2007 Page 720 of 1312
REJ09B0320-0200
• 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.
Start of transmission
Read TDFE flag in SCFSR
TDFE = 1?
Write transmit data to SCFTDR
and read 1 from TDFE and
TEND flags in SCFSR, then clear
these flags to 0
All data transmitted?
Read TEND flag in SCFSR
TEND = 1?
Clear TE bit in SCSCR to 0
End of transmission
No
Yes
No
Yes
No
Yes
[1]
[2]
[1]
SCIF status check and transmit data write:
[2]
Serial transmission continuation procedeure:
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.
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.
Figure 16.11 Sample Flowchart for Transmitting Serial Data



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