參數(shù)資料
型號: XR16L2552
廠商: Exar Corporation
英文描述: 2.25V TO 5.5V DUART WITH 16-BYTE FIFO
中文描述: 2.25V至5.5V的杜阿爾特16字節(jié)FIFO
文件頁數(shù): 42/47頁
文件大小: 748K
代理商: XR16L2552
XR16L2552
2.25V TO 5.5V DUART WITH 16-BYTE FIFO
xr
REV. 1.1.1
42
F
IGURE
22. T
RANSMIT
R
EADY
& I
NTERRUPT
T
IMING
[FIFO M
ODE
, DMA M
ODE
D
ISABLED
]
FOR
C
HANNELS
A & B
F
IGURE
23. T
RANSMIT
R
EADY
& I
NTERRUPT
T
IMING
[FIFO M
ODE
, DMA M
ODE
E
NABLED
]
FOR
C
HANNELS
A & B
TX
TXRDY#
IOW#
(Loading data
into FIFO)
INT*
TXDMA#
D0:D7
S
D0:D7
T
D0:D7
S
D0:D7
S
T
D0:D7
S
T
T
D0:D7
S
T
Start
Bit
Stop
Bit
T
WRI
(Unloading)
Last Data Byte
Transmitted
TX FIFO no
longer empty
Data in
TX FIFO
TX FIFO
Empty
T
WT
T
SRT
TX FIFO
Empty
T
T
S
T
SI
ISR is read
IER[1]
enabled
*INT is cleared when the ISR is read or when there is at least one character in the FIFO.
TX
TXRDY#
IOW#
(Loading data
into FIFO)
INT*
TXDMA
D0:D7
S
D0:D7
T
D0:D7
S
D0:D7
S
T
D0:D7
S
T
T
D0:D7
S
T
Start
Bit
Stop
Bit
T
WRI
(Unloading)
Last Data Byte
Transmitted
TX FIFO no
longer empty
TX FIFO
Empty
TX FIFO
Empty
T
T
S
T
SI
ISR is read
IER[1]
enabled
*INT is cleared when the ISR is read or when there is at least one character in the FIFO.
At least 1
empty location
in FIFO
T
SRT
TX FIFO
Full
T
WT
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