LM3S600-IQN20-A0T Bookham Technology, Inc., LM3S600-IQN20-A0T Datasheet - Page 227
LM3S600-IQN20-A0T
Manufacturer Part Number
LM3S600-IQN20-A0T
Description
Microcontroller
Manufacturer
Bookham Technology, Inc.
Datasheet
1.LM3S600-IQN20-A0T.pdf
(378 pages)
- Current page: 227 of 378
- Download datasheet (4Mb)
UART Flag (UARTFR)
UART0 base: 0x4000.C000
UART1 base: 0x4000.D000
Offset 0x018
Type RO, reset 0x0000.0090
October 01, 2007
Reset
Reset
Type
Type
Bit/Field
31:8
7
6
5
RO
RO
31
15
0
0
Register 3: UART Flag (UARTFR), offset 0x018
The UARTFR register is the flag register. After reset, the TXFF, RXFF, and BUSY bits are 0, and
TXFE and RXFE bits are 1.
RO
RO
30
14
0
0
reserved
Name
TXFE
RXFF
TXFF
RO
RO
29
13
0
0
RO
RO
28
12
0
0
reserved
RO
RO
Type
27
11
0
0
RO
RO
RO
RO
RO
RO
26
10
0
0
Reset
0
1
0
0
RO
RO
25
0
9
0
Preliminary
Description
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 Transmit FIFO Empty
The meaning of this bit depends on the state of the FEN bit in the
UARTLCRH register.
If the FIFO is disabled (FEN is 0), this bit is set when the transmit holding
register is empty.
If the FIFO is enabled (FEN is 1), this bit is set when the transmit FIFO
is empty.
UART Receive FIFO Full
The meaning of this bit depends on the state of the FEN bit in the
UARTLCRH register.
If the FIFO is disabled, this bit is set when the receive holding register
is full.
If the FIFO is enabled, this bit is set when the receive FIFO is full.
UART Transmit FIFO Full
The meaning of this bit depends on the state of the FEN bit in the
UARTLCRH register.
If the FIFO is disabled, this bit is set when the transmit holding register
is full.
If the FIFO is enabled, this bit is set when the transmit FIFO is full.
RO
RO
24
0
8
0
reserved
TXFE
RO
RO
23
0
7
1
RXFF
RO
RO
22
0
6
0
TXFF
RO
RO
21
0
5
0
RXFE
RO
RO
20
0
4
1
BUSY
LM3S600 Microcontroller
RO
RO
19
0
3
0
RO
RO
18
0
2
0
reserved
RO
RO
17
0
1
0
RO
RO
16
0
0
0
227
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