XC68HC705F32 Motorola, XC68HC705F32 Datasheet - Page 119

• Manufacturer Part Number: XC68HC705F32
• Description: MICROCONTROLLER
• Manufacturer: Motorola

11.11.3
The SCI control register 2 (SCCR2) provides the control bits that enable/disable individual SCI
functions.
TIE — Transmit interrupt enable
TCIE — Transmit complete interrupt enable
RIE — Receiver interrupt enable
ILIE — Idle line interrupt enable
TE — Transmitter enable
When the transmit enable bit is set, the transmit shift register output is applied to the TDO line.
Depending on the state of control bit M (SCCR1), a preamble of 10 (M = 0) or 11 (M = 1)
consecutive ones is transmitted when software sets the TE bit from a cleared state.
After loading the last byte in the serial communications data register and receiving the TDRE flag,
the user should clear TE. Transmission of the last byte will then be completed before the transmitter
gives up control of the TDO pin. While the transmitter is active, PC3 is forced to be an output.
MC68HC05F32
SCI control (SCCR2)
1 (set)
0 (clear) –
1 (set)
0 (clear) –
1 (set)
0 (clear) –
1 (set)
0 (clear) –
1 (set)
0 (clear) –
Serial communications control register 2 (SCCR2)
–
–
–
–
–
TDRE interrupts enabled.
TDRE interrupts disabled.
TC interrupts enabled.
TC interrupts disabled.
RDRF and OR interrupts enabled.
RDRF and OR interrupts disabled.
IDLE interrupts enabled.
IDLE interrupts disabled.
Transmitter enabled.
Transmitter disabled.
SERIAL COMMUNICATIONS INTERFACE
Address
$0049
bit 7
TIE
TCIE
bit 6
RIE
bit 5
ILIE
bit 4
TE
bit 3
RE
bit 2
RWU
bit 1
SBK 0000 0000
bit 0
MOTOROLA
on reset
State
11-11
TPG
11