Hitachi H8S/2633 Hardware Manual page 701

Serial Data Reception (Except Block Transfer Mode): Data reception in Smart Card mode uses

the same processing procedure as for the normal SCI. Figure 17-7 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

Start reception

ORER = 0 and

Read RDR and clear

RDRF flag in SSR to 0

All data received?

Clear RE bit to 0

Figure 17-7 Example of Reception Processing Flow

Error processing