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H8/3021 Datasheet(PDF) 438 Page - Renesas Technology Corp

Part # H8/3021
Description  16-Bit Single-Chip Microcomputer
PDF  712 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

H8/3021 Datasheet(HTML) 438 Page - Renesas Technology Corp

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12. Smart Card Interface
Rev.2.00 Mar. 22, 2007 Page 414 of 684
REJ09B0352-0200
Serial Data Reception: Data reception in Smart Card mode uses the same processing procedure
as for the normal SCI. Figure 12.6 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 flag 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 12.6 Example of Reception Processing Flow



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