
MC68F375
QUEUED SERIAL MULTI-CHANNEL MODULE
MOTOROLA
REFERENCE MANUAL
Rev. 25 June 03
6-46
SCCxR1 — SCI Control Register 1
0xYF FC0A, 0xYF FC22
MSB
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
LSB
0
LOOPS
WOM
S
ILT
PT
PE
M
WAKE
TIE
TCIE
RIE
ILIE
TE
RE
RWU
SBK
RESET:
0
Table 6-24 SCCxR1 Bit Settings
Bit(s)
Name
Description
15
—
Reserved
14
LOOPS
Loop mode
0 = Normal SCI operation, no looping, feedback path disabled.
1 = SCI test operation, looping, feedback path enabled.
13
WOMS
Wired-OR mode for SCI Pins
0 = If configured as an output, TXD is a normal CMOS output.
1 = If configured as an output, TXD is an open drain output.
12
ILT
0 = Short idle-line detect (start count on first one).
1 = Long idle-line detect (start count on first one after stop bit(s)).
11
PT
0 = Even parity.
1 = Odd parity.
10
PE
0 = SCI parity disabled.
1 = SCI parity enabled.
9M
0 = 10-bit SCI frame.
1 = 11-bit SCI frame.
8
WAKE
0 = SCI receiver awakened by idle-line detection.
1 = SCI receiver awakened by address mark (last bit set).
7TIE
Transmit interrupt enable
0 = SCI TDRE interrupts disabled.
1 = SCI TDRE interrupts enabled.
6TCIE
Transmit complete interrupt enable
0 = SCI TC interrupts disabled.
1 = SCI TC interrupts enabled.
5RIE
Receiver interrupt enable
0 = SCI RDRF and OR interrupts disabled.
1 = SCI RDRF and OR interrupts enabled.
4ILIE
Idle-line interrupt enable
0 = SCI IDLE interrupts disabled.
1 = SCI IDLE interrupts enabled.
3TE
Transmitter enable
0 = SCI transmitter disabled (TXD pin can be used as general-purpose output)
1 = SCI transmitter enabled (TXD pin dedicated to SCI transmitter).
2RE
Receiver Enable
0 = SCI receiver disabled (RXD pin can be used as general-purpose input).
1 = SCI receiver enabled (RXD pin is dedicated to SCI receiver).
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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