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SH7721 Datasheet(PDF) 1079 Page - Renesas Technology Corp |
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SH7721 Datasheet(HTML) 1079 Page - Renesas Technology Corp |
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1079 / 1524 page  Section 30 SIM Card Module (SIM) Rev. 3.00 Jan. 18, 2008 Page 1017 of 1458 REJ09B0033-0300 Yes No No Yes Yes No Initialization Start reception Are PER, ORER, and WAIT_ER all 0s? Error processing RDRF=1? Read received data from SCRDR All data received? Clear RE bit in SCSCR to 0 Receive end (1) (2) (3) (4) (5) (6) Figure 30.6 Example of Receive Processing (4) Switching Modes When switching from receive mode to transmit mode, after confirming that reception has been completed, start initialization, and then clear the RE bit to 0 and set the TE bit to 1. Completion of reception can be confirmed through the RDRF flag. When switching from transmit mode to receive mode, after confirming that transmission has been completed, start initialization, and then clear the TE bit to 0 and set the RE bit to 1. Completion of transmission can be confirmed through the TDRE and TEND flags. |
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