LM3S1138 Luminary Micro, Inc, LM3S1138 Datasheet - Page 318
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LM3S1138
Manufacturer Part Number
LM3S1138
Description
Lm3s1138 Arm Microcontroller
Manufacturer
Luminary Micro, Inc
Datasheet
1.LM3S1138.pdf
(491 pages)
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Universal Asynchronous Receivers/Transmitters (UARTs)
318
Bit/Field
6:3
8
7
2
1
0
UARTEN
reserved
SIREN
SIRLP
Name
TXE
LBE
Type
R/W
R/W
R/W
R/W
R/W
RO
Reset
1
0
0
0
0
0
Preliminary
Description
UART Transmit Enable
If this bit is set to 1, the transmit section of the UART is enabled. When
the UART is disabled in the middle of a transmission, it completes the
current character before stopping.
Note:
UART Loop Back Enable
If this bit is set to 1, the UnTX path is fed through the UnRX path.
Software should not rely on the value of a reserved bit. To provide
compatibility with future products, the value of a reserved bit should be
preserved across a read-modify-write operation.
UART SIR Low Power Mode
This bit selects the IrDA encoding mode. If this bit is cleared to 0,
low-level bits are transmitted as an active High pulse with a width of
3/16th of the bit period. If this bit is set to 1, low-level bits are transmitted
with a pulse width which is 3 times the period of the IrLPBaud16 input
signal, regardless of the selected bit rate. Setting this bit uses less power,
but might reduce transmission distances. See page 312 for more
information.
UART SIR Enable
If this bit is set to 1, the IrDA SIR block is enabled, and the UART will
transmit and receive data using SIR protocol.
UART Enable
If this bit is set to 1, the UART is enabled. When the UART is disabled
in the middle of transmission or reception, it completes the current
character before stopping.
To enable transmission, the UARTEN bit must also be set.
July 26, 2008
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