HD6417034B RENESAS [Renesas Technology Corp], HD6417034B Datasheet - Page 387

• Manufacturer Part Number: HD6417034B
• Description: 32-Bit RISC Microcomputer
• Manufacturer: RENESAS [Renesas Technology Corp]

Bit 6—Receive Interrupt Enable (RIE): RIE enables or disables the receive-data-full interrupt
(RXI) requested when the receive data register full bit (RDRF) in the serial status register (SSR) is
set to 1 due to transfer of serial receive data from RSR to RDR. Also enables or disables receive-
error interrupt (ERI) requests.
Bit 6: RIE
0
1
Bit 5—Transmit Enable (TE): TE enables or disables the SCI transmitter.
Bit 5: TE
0
1
Bit 4—Receive Enable (RE): RE enables or disables the SCI receiver.
Bit 4: RE
0
1
Description
Transmitter disabled
The transmit data register empty bit (TDRE) in the serial status register (SSR)
is fixed at 1.
Transmitter enabled. Serial transmission starts when the transmit data register
empty (TDRE) bit in the serial status register (SSR) is cleared to 0 after writing
transmit data into TDR. Select the transmit format in SMR before setting TE to
1.
Description
Receiver disabled
Clearing RE to 0 does not affect the receive flags (RDRF, FER, PER, ORER).
These flags retain their previous values.
Receiver enabled. Serial reception starts when a start bit is detected in
asynchronous mode, or serial clock input is detected in synchronous mode.
Select the receive format in SMR before setting RE to 1.
Description
Receive-data-full interrupt (RXI) and receive-error interrupt (ERI) requests are
disabled
RXI and ERI interrupt requests can be cleared by reading the RDRF flag or
error flag (FER, PER, or ORER) after it has been set to 1, then clearing the
flag to 0, or by clearing RIE to 0.
Receive-data-full interrupt (RXI) and receive-error interrupt (ERI) requests are
enabled
Section 13 Serial Communication Interface (SCI)
Rev. 7.00 Jan 31, 2006 page 361 of 658
REJ09B0272-0700
(Initial value)
(Initial value)
(Initial value)