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SH7721 Datasheet(PDF) 692 Page - Renesas Technology Corp |
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SH7721 Datasheet(HTML) 692 Page - Renesas Technology Corp |
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692 / 1524 page  Section 18 Serial Communication Interface with FIFO (SCIF) Rev. 3.00 Jan. 18, 2008 Page 630 of 1458 REJ09B0033-0300 No Yes No Wait Yes 1. Set the transmit trigger number in SCFCR. 2. Write transmit data to SCFTDR, and clear the TDFE flag to 0 after reading 1 from it. 3. Wait for one bit interval. 4. Transmission is started when the TE bit in SCSCR is set to 1. 5. After the end of transmission, clear the TE bit to 0. Start of transmission Set transmit trigger number in TTRG1 and TTRG0 in SCFCR Write transmit data exceeding transmit trigger setting number, and clear TDFE flag to 0 after reading 1 from it 1-bit interval elapsed? Set TE bit in SCSCR When using transmit FIFO data interrupt, set TIE bit to 1 TEND =1? Clear TE bit in SCSCR to 0 End of transmission 1 2 3 4 5 Figure 18.14 Sample Serial Transmission Flowchart (2) (Second and Subsequent Transmission) |
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