Renesas H8/3067 Series User Manual page 513

Bit 7—Transmit Interrupt Enable (TIE): Enables or disables the transmit-data-empty interrupt
(TXI) requested when the TDRE flag in SSR is set to 1 due to transfer of serial transmit data from
TDR to TSR.
Bit 7
TIE Description
0 Transmit-data-empty interrupt request (TXI) is disabled*
1 Transmit-data-empty interrupt request (TXI) is enabled
Note: * TXI interrupt requests can be cleared by reading the value 1 from the TDRE flag, then
clearing it to 0; or by clearing the TIE bit to 0.
Bit 6—Receive Interrupt Enable (RIE): Enables or disables the receive-data-full interrupt (RXI)
requested when the RDRF flag in SSR is set to 1 due to transfer of serial receive data from RSR to
RDR; also enables or disables the receive-error interrupt (ERI).
Bit 6
RIE Description
0 Receive-data-full (RXI) and receive-error (ERI) interrupt requests are disabled*
1 Receive-data-full (RXI) and receive-error (ERI) interrupt requests are enabled
Note: * RXI and ERI interrupt requests can be cleared by reading the value 1 from the RDRF, FER,
PER, or ORER flag, then clearing the flag to 0; or by clearing the RIE bit to 0.
Bit 5—Transmit Enable (TE): Enables or disables the start of SCI serial transmitting operations.
Bit 5
TE Description
Transmitting disabled *
0
Transmitting enabled *
1
Notes: 1. The TDRE flag is fixed at 1 in SSR.
2. In the enabled state, serial transmission starts when the TDRE flag in SSR is cleared to
0 after writing of transmit data into TDR. Select the transmit format in SMR before
setting the TE bit to 1.
Section 13 Serial Communication Interface
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Rev. 4.00 Jan 26, 2006 page 489 of 938
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REJ09B0276-0400