SH7065 Datasheet, PDF (550/941 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperH RISC engine Family/SH7000 Series

Section 14 Serial Communication Interface (SCI)
SCSCR is initialized to H'00 by a reset, by the module standby function, and in standby mode.
Bit 7—Transmit Interrupt Enable (TIE): Enables or disables transmit-FIFO-data-empty
interrupt (TXI) request generation when, after serial transmit data is transferred from the transmit
FIFO data register (SCFTDR) to the transmit shift register (SCTSR), the number of data bytes in
SCFTDR falls to or below the transmit trigger set number, and the TDFE flag is set to 1 in the
serial status 1 register (SC1SSR).
Bit 7: TIE
0
Description
Transmit-FIFO-data-empty interrupt (TXI) request disabled^*
(Initial value)
1
Transmit-FIFO-data-empty interrupt (TXI) request enabled
Note: * TXI interrupt requests can be cleared by writing transmit data exceeding the transmit
trigger set number to SCFTDR, reading 1 from the TDFE flag, then clearing it to 0, or by
clearing the TIE bit to 0. When transmit data is written to SCFTDR using the on-chip
DMAC, the TDFE flag is cleared automatically.
Bit 6—Receive Interrupt Enable (RIE): Enables or disables generation of a receive-FIFO-data-
full interrupt (RXI) request and receive-error interrupt (ERI) request when, after serial receive data
is transferred from the receive shift register (SCRSR) to the receive FIFO data register (SCFRDR),
the number of data bytes in SCFRDR reaches or exceeds the receive trigger set number, and the
RDF flag is set to 1 in SC1SSR.
Bit 6: RIE
Description
0
Receive-FIFO-data-full interrupt (RXI) request and receive-error interrupt (ERI)
request disabled^*
(Initial value)
1
Receive-FIFO-data-full interrupt (RXI) request and receive-error interrupt (ERI)
request enabled
Note: * RXI and ERI interrupt requests can be cleared by reading 1 from the RDF flag, or the
ORER, BRK, DR, or ER flag, then clearing the flag to 0, or by clearing the RIE bit to 0.
When ORER occurs, read at least the receive trigger set number of receive data bytes
from SCFRDR, then read 1 from the ORER flag and clear it to 0.
Rev. 5.00 Sep 11, 2006 page 528 of 916
REJ09B0332-0500