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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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HD6432351 데이터시트(PDF) 666 Page - Renesas Technology Corp |
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HD6432351 데이터시트(HTML) 666 Page - Renesas Technology Corp |
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666 / 1025 page  Section 14 Smart Card Interface Rev. 3.00 Sep 15, 2006 page 632 of 988 REJ09B0330-0300 Serial Data Reception Data reception in Smart Card mode uses the same processing procedure as for the normal SCI. Figure 14.7 shows an example of the transmission processing flow. [1] Perform Smart Card interface mode initialization as described above in Initialization. [2] Check that the ORER flag and PER flag in SSR are cleared to 0. If either is set, perform the appropriate receive error processing, then clear both the ORER and the PER flag to 0. [3] Repeat steps [2] and [3] until it can be confirmed that the RDRF flag is set to 1. [4] Read the receive data from RDR. [5] When receiving data continuously, clear the RDRF flag to 0 and go back to step [2]. [6] To end reception, clear the RE bit to 0. Initialization Read RDR and clear RDRF flag in SSR to 0 Clear RE bit to 0 Start reception Start Error processing No No No Yes Yes ORER = 0 and PER = 0 RDRF = 1? All data received? Yes Figure 14.7 Example of Reception Processing Flow |
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