HD6432646 Hitachi, HD6432646 Datasheet - Page 556
HD6432646
Manufacturer Part Number
HD6432646
Description
(HD64F264x Series) 16-Bit Microcomputer
Manufacturer
Hitachi
Datasheet
1.HD6432646.pdf
(1155 pages)
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Serial Data Reception (Except Block Transfer Mode): 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
[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.
522
appropriate receive error processing, then clear both the ORER and the PER flag to 0.
No
No
Figure 14-7 Example of Reception Processing Flow
RDRF flag in SSR to 0
Read RDR and clear
All data received?
Clear RE bit to 0
ORER = 0 and
Start reception
Initialization
RDRF=1?
PER = 0
Start
Yes
Yes
Yes
No
Error processing
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