HD6432138SW datasheet(452/1061 Pages) RENESAS

452 / 1061 page

Section 15 Serial Communication Interface (SCI, IrDA)

Rev. 4.00 Jun 06, 2006 page 398 of 1004

REJ09B0301-0400

Bit 7—Transmit Interrupt Enable (TIE): Enables or disables transmit-data-empty interrupt

(TXI) request generation when serial transmit data is transferred from TDR to TSR and the TDRE

flag in SSR is set to 1.

Bit 7

TIE

Description

Transmit-data-empty interrupt (TXI) request disabled*

(Initial value)

Transmit-data-empty interrupt (TXI) request enabled

Note:

TXI interrupt request cancellation can be performed by reading 1 from the TDRE flag,

then clearing it to 0, or clearing the TIE bit to 0.

Bit 6—Receive Interrupt Enable (RIE): Enables or disables receive-data-full interrupt (RXI)

request and receive-error interrupt (ERI) request generation when serial receive data is transferred

from RSR to RDR and the RDRF flag in SSR is set to 1.

Bit 6

RIE

Description

Receive-data-full interrupt (RXI) request and receive-error interrupt (ERI) request

disabled*

(Initial value)

Receive-data-full interrupt (RXI) request and receive-error interrupt (ERI) request

enabled

Note:

RXI and ERI interrupt request cancellation can be performed by reading 1 from the

RDRF, FER, PER, or ORER flag, then clearing the flag to 0, or clearing the RIE bit to 0.

Bit 5—Transmit Enable (TE): Enables or disables the start of serial transmission by the SCI.

Bit 5

Description

Transmission disabled*

(Initial value)

Transmission enabled*

Notes: 1. The TDRE flag in SSR is fixed at 1.

2. In this state, serial transmission is started when transmit data is written to TDR and the

TDRE flag in SSR is cleared to 0.

SMR setting must be performed to decide the transmission format before setting the TE

bit to 1.

HD6432138SW Datasheet(PDF) 452 Page - Renesas Technology Corp