MC68HC708AS48 FREESCALE [Freescale Semiconductor, Inc], MC68HC708AS48 Datasheet - Page 270
MC68HC708AS48
Manufacturer Part Number
MC68HC708AS48
Description
Advance Information
Manufacturer
FREESCALE [Freescale Semiconductor, Inc]
Datasheet
1.MC68HC708AS48.pdf
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Serial Communications Interface (SCI)
Advance Information
270
NOTE:
NOTE:
SCRIE — SCI Receive Interrupt Enable Bit
ILIE — Idle Line Interrupt Enable Bit
TE — Transmitter Enable Bit
Writing to the TE bit is not allowed when the enable SCI bit (ENSCI) is
clear. ENSCI is in SCI control register 1.
RE — Receiver Enable Bit
Writing to the RE bit is not allowed when the enable SCI bit (ENSCI) is
clear. ENSCI is in SCI control register 1.
This read/write bit enables the SCRF bit to generate SCI receiver
CPU interrupt requests. Reset clears the SCRIE bit.
This read/write bit enables the IDLE bit to generate SCI receiver CPU
interrupt requests. Reset clears the ILIE 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
PTE0/TxD pin. If software clears the TE bit, the transmitter completes
any transmission in progress before the PTE0/TxD returns to the idle
condition (logic 1). Clearing and then setting TE during a transmission
queues an idle character to be sent after the character currently being
transmitted. Reset clears the TE bit.
Setting this read/write bit enables the receiver. Clearing the RE bit
disables the receiver but does not affect receiver interrupt flag bits.
Reset clears the RE bit.
1 = SCRF enabled to generate CPU interrupt requests
0 = SCRF not enabled to generate CPU interrupt requests
1 = IDLE enabled to generate CPU interrupt requests
0 = IDLE not enabled to generate CPU interrupt requests
1 = Transmitter enabled
0 = Transmitter disabled
1 = Receiver enabled
0 = Receiver disabled
Serial Communications Interface (SCI)
MC68HC708AS48
MOTOROLA
—
Rev. 4.0
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