HD643303x Hitachi, HD643303x Datasheet - Page 337

• Manufacturer Part Number: HD643303x
• Description: Hitachi Microcomputer
• Manufacturer: Hitachi

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.
clearing it to 0; or by clearing the TIE bit to 0.
PER, or ORER flag, then clearing it to 0; or by clearing the RIE bit to 0.
2. In the enabled state, serial transmitting starts when the TDRE bit in SSR is cleared to 0
Description
Transmit-data-empty interrupt request (TXI) is disabled*
Transmit-data-empty interrupt request (TXI) is enabled
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
Description
Transmitting disabled
Transmitting enabled
after writing of transmit data into TDR. Select the transmit format in SMR before setting
the TE bit to 1.
*2
*1
322
(Initial value)
(Initial value)