H8SSLASH2218 datasheet(489/750 Pages) RENESAS

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Section 12 Serial Communication Interface

Rev.6.00 Jun. 03, 2008 Page 441 of 698

REJ09B0074-0600

12.9.2

Interrupts in Smart Card Interface Mode

Table 12.13 shows the interrupt sources in Smart Card interface mode. The transmit end interrupt

(TEI) request cannot be used in this mode.

Note:

In case of block transfer mode, see section 12.9.1, Interrupts in Normal Serial

Communication Interface Mode.

Table 12.13 Interrupt Sources in Smart Card Interface Mode

Channel

Name

Interrupt Source

Interrupt Flag

DMAC

Activation

Priority*

ERI0

Receive Error, detection

ORER, PER, ERS

Not possible

High

RXI0

Receive Data Full

RDRF

Possible

TXI0

Transmit Data Empty

TEND

Possible

ERI2

Receive Error, detection

ORER, PER, ERS

Not possible

RXI2

Receive Data Full

RDRF

Not possible

TXI2

Transmit Data Empty

TEND

Not possible

Low

Note: * Indicates the initial state immediately after a reset.

Priorities in channels can be changed by the interrupt controller.

12.10

Usage Notes

12.10.1

Module Stop Mode Setting

SCI operation can be disabled or enabled using the module stop control register. The initial setting

is for SCI operation to be halted. Register access is enabled by clearing module stop mode. For

details, refer to section 20, Power-Down Modes.

12.10.2

Break Detection and Processing (Asynchronous Mode Only)

When framing error detection is performed, a break can be detected by reading the RxD pin value

directly. In a break, the input from the RxD pin becomes all 0s, setting the FER flag, and possibly

the PER flag. Note that as the SCI continues the receive operation after receiving a break, even if

the FER flag is cleared to 0, it will be set to 1 again.

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