
Technical Data
MC68HC705C8A
—
Rev. 3
132
Serial Communications Interface (SCI)
MOTOROLA
Serial Communications Interface (SCI)
TCIE
—
Transmission Complete Interrupt Enable Bit
This read/write bit enables SCI interrupt requests when the TC bit
becomes set. Reset clears the TCIE bit.
1 = TC interrupt requests enabled
0 = TC interrupt requests disabled
RIE
—
Receive Interrupt Enable Bit
This read/write bit enables SCI interrupt requests when the RDRF bit
or the OR bit becomes set. Reset clears the RIE bit.
1 = RDRF interrupt requests enabled
0 = RDRF interrupt requests disabled
ILIE
—
Idle Line Interrupt Enable Bit
This read/write bit enables SCI interrupt requests when the IDLE bit
becomes set. Reset clears the ILIE bit.
1 = IDLE interrupt requests enabled
0 = IDLE interrupt requests disabled
TE
—
Transmit Enable Bit
Setting this read/write bit begins the transmission by sending a
preamble of 10 or 11 logic 1s from the transmit shift register to the
PD1/TDO pin. Reset clears the TE bit.
1 = Transmission enabled
0 = Transmission disabled
RE
—
Receive Enable Bit
Setting this read/write bit enables the receiver. Clearing the RE bit
disables the receiver and receiver interrupts but does not affect the
receiver interrupt flags. Reset clears the RE bit.
1 = Receiver enabled
0 = Receiver disabled
RWU
—
Receiver Wakeup Enable Bit
This read/write bit puts the receiver in a standby state. Typically, data
transmitted to the receiver clears the RWU bit and returns the receiver
to normal operation. The WAKE bit in SCCR1 determines whether an