XR16M2651IL32 EXAR [Exar Corporation], XR16M2651IL32 Datasheet - Page 45
XR16M2651IL32
Manufacturer Part Number
XR16M2651IL32
Description
HIGH PERFORMANCE DUART WITH 32-BYTE FIFO AND POWERSAVE FEATURE
Manufacturer
EXAR [Exar Corporation]
Datasheet
1.XR16M2651IL32.pdf
(51 pages)
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REV. 1.0.2
F
F
IGURE
IGURE
RX
INT
RXRDY#
IOR#
(Reading data out
of RX FIFO)
(Unloading)
(Loading data
*INT is cleared when the ISR is read or when TX FIFO fills up to the trigger level.
22. R
23. T
into FIFO)
TX
INT*
TXRDY#
IOW#
RANSMIT
ECEIVE
TX FIFO
Empty
enabled
IER[1]
Start
Bit
S
TX FIFO
Data in
D0:D7
R
HIGH PERFORMANCE DUART WITH 32-BYTE FIFO AND POWERSAVE FEATURE
R
EADY
Trigger Level or RX Data
EADY
RX FIFO fills up to RX
Stop
Bit
S
& I
Start
Timeout
D0:D7
& I
Bit
ISR is read
S
NTERRUPT
T
D0:D7
NTERRUPT
WT
TX FIFO fills up
to trigger level
T
Stop
Bit
T
T
D0:D7
T
T
IMING
SSI
S
IMING
D0:D7
[FIFO M
S
[FIFO M
T
SSR
D0:D7
T
S
45
D0:D7
T
WRI
ODE
T
ODE
, DMA E
T
S
, DMA M
T
D0:D7
SI
T
S
D0:D7
NABLED
T
ODE
below trigger level
S
TX FIFO drops
T
RRI
D0:D7
T
D
S
]
ISABLED
ISR is read
FOR
D0:D7
T
RX FIFO drops
Trigger Level
C
below RX
S
HANNELS
T
]
D0:D7
FOR
Empties
T
C
T
FIFO
RR
S
XR16M2651
Last Data Byte
HANNELS
Transmitted
A & B
RXFIFODMA
D0:D7
TXDMA#
TX FIFO
Empty
T
SRT
T
A & B
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