Hitachi H8/3032 Series Hardware Manual page 337

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
0
1
Note: * TXI interrupt requests can be cleared by reading the value 1 from the TDRE flag, then
Bit 6—Receive Interrupt Enable (RIE): Enables or disables the receive-data-full interrupt
(RXI) requested when the RDRF flag is set to 1 in SSR due to transfer of serial receive data from
RSR to RDR; also enables or disables the receive-error interrupt (ERI).
Bit 6
RIE
0
1
Note: * RXI and ERI interrupt requests can be cleared by reading the value 1 from the RDRF, FER,
Bit 5—Transmit Enable (TE): Enables or disables the start of SCI serial transmitting operations.
Bit 5
TE
0
1
Notes: 1. The TDRE bit is locked at 1 in SSR.
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Description
Transmit-data-empty interrupt request (TXI) is disabled*
Transmit-data-empty interrupt request (TXI) is enabled
clearing it to 0; or by clearing the TIE bit to 0.
Description
Receive-end (RXI) and receive-error (ERI) interrupt requests are disabled (Initial value)
Receive-end (RXI) and receive-error (ERI) interrupt requests are enabled
PER, or ORER flag, then clearing it to 0; or by clearing the RIE bit to 0.
Description
*1
Transmitting disabled
Transmitting enabled *2
2. In the enabled state, serial transmitting starts when the TDRE bit 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.
322
(Initial value)
(Initial value)