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R5F72115D160FPV Datasheet(PDF) 738 Page - Renesas Technology Corp |
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R5F72115D160FPV Datasheet(HTML) 738 Page - Renesas Technology Corp |
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738 / 1228 page ![]() Section 15 Serial Communication Interface with FIFO (SCIF) Rev. 2.00 May. 08, 2008 Page 714 of 1200 REJ09B0344-0200 • Transmitting Serial Data (Clocked Synchronous Mode) Figure 15.11 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, read TDFE and TEND flags in SCFSR, and clear the TDRE and TEND flags in SCFSR 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] 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, read 1 from the TDFE and TEND flags, and clear these flags to 0. [2] Serial transmission continuation procedeure: To continue serial transmission, read 1 from the TDFE flag to confirm that writing is possible, them write data to SCFTDR, and then clear the TDFE flag to 0. [1] [2] Figure 15.11 Sample Flowchart for Transmitting Serial Data |
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