HD64F3039F18 Datasheet, PDF (433/710 Pages) Renesas Technology Corp – Renesas 16-Bit Single-Chip Microcomputer H8 Family / H8/300H Series

Section 12 Smart Card Interface
Start
Initialization
Start reception
ORER = 0 and
No
PER = 0
Yes
No
RDRF = 1?
Yes
Read RDR and clear
RDRF flag in SSR to 0
Error processing
No
All data received?
Yes
Clear RE bit to 0
Figure 12.6 Example of Reception Processing Flow
With the above processing, interrupt servicing is possible.
If reception ends and the RDRF flag is set to 1 while the RIE bit is set to 1 and interrupt requests
are enabled, a receive data full interrupt (RXI) request will be generated. If an error occurs in
reception and either the ORER flag or the PER flag is set to 1, a transfer error interrupt (ERI)
request will be generated.
For details, see Interrupt Operation below.
If a parity error occurs during reception and the PER is set to 1, the received data is still
transferred to RDR, and therefore this data can be read.
Rev.3.00 Mar. 26, 2007 Page 409 of 682
REJ09B0353-0300