HD6412320 RENESAS [Renesas Technology Corp], HD6412320 Datasheet - Page 720

• Manufacturer Part Number: HD6412320
• Description: Renesas 16-Bit Single-Chip Microcomputer H8S Family H8S-2300 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

Section 15 Smart Card Interface
Serial Data Reception (Except Block Transfer Mode): Data reception in smart card mode uses
the same processing procedure as for the normal SCI. Figure 15.7 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.
Rev.6.00 Sep. 27, 2007 Page 690 of 1268
REJ09B0220-0600
appropriate receive error handling, then clear both the ORER and the PER flag to 0.
No
No
RDRF flag in SSR to 0
Figure 15.7 Sample Reception Flowchart
Read RDR and clear
All data received?
Start of reception
Clear RE bit to 0
ORER = 0 and
Initialization
RDRF = 1?
PER = 0?
Start
Yes
Yes
Yes
No
Error handling