H8SX1663 datasheet(722/1158 Pages) RENESAS

722 / 1158 page

Section 15 Serial Communication Interface (SCI, IrDA, CRC)

Rev.1.00 Jun. 07, 2006 Page 670 of 1102

REJ09B0294-0100

Bit Functions in Smart Card Interface Mode (When SMIF in SCMR = 1):

Bit

Bit Name

Initial

Value

R/W

Description

TIE

R/W

Transmit Interrupt Enable

When this bit is set to 1,a TXI interrupt request is

enabled.

A TXI interrupt request can be cancelled by reading 1

from the TDRE flag and then clearing the flag to 0, or by

clearing the TIE bit to 0.

RIE

R/W

Receive Interrupt Enable

When this bit is set to 1, RXI and ERI interrupt requests

are enabled.

RXI and ERI interrupt requests can be cancelled by

reading 1 from the RDRF, FER, PER, or ORER flag and

then clearing the flag to 0, or by clearing the RIE bit to 0.

R/W

Transmit Enable

When this bit is set to 1, transmission is enabled. Under

this condition, serial transmission is started by writing

transmit data to TDR, and clearing the TDRE flag in SSR

to 0. Note that SMR should be set prior to setting the TE

bit to 1 in order to designate the transmission format.

If transmission is halted by clearing this bit to 0, the

TDRE flag in SSR is fixed 1.

R/W

Receive Enable

When this bit is set to 1, reception is enabled. Under this

condition, serial reception is started by detecting the start

bit in asynchronous mode or the synchronous clock input

in clocked synchronous mode. Note that SMR should be

set prior to setting the RE bit to 1 in order to designate

the reception format.

Even if reception is halted by clearing this bit to 0, the

RDRF, FER, PER, and ORER flags are not affected and

the previous value is retained.

MPIE

R/W

Multiprocessor Interrupt Enable (valid only when the MP

bit in SMR is 1 in asynchronous mode)

Write 0 to this bit in smart card interface mode.

TEIE

R/W

Transmit End Interrupt Enable

Write 0 to this bit in smart card interface mode.

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