XR16C854CV EXAR [Exar Corporation], XR16C854CV Datasheet - Page 48
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XR16C854CV
Manufacturer Part Number
XR16C854CV
Description
2.97V TO 5.5V QUAD UART WITH 128-BYTE FIFO
Manufacturer
EXAR [Exar Corporation]
Datasheet
1.XR16C854CV.pdf
(54 pages)
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XR16C854/854D
2.97V TO 5.5V QUAD UART WITH 128-BYTE FIFO
F
IGURE
(Unloading)
(Loading data
*INT is cleared when the ISR is read or when TX FIFO fills up to the trigger level.
into FIFO)
TX
INT*
TXRDY#
IOW#
24. T
RANSMIT
TX FIFO
Empty
enabled
IER[1]
TX FIFO
Data in
R
EADY
Start
Bit
ISR is read
S
& I
T
D0:D7
WT
NTERRUPT
TX FIFO fills up
to trigger level
Stop
Bit
T
T
S
IMING
D0:D7
[FIFO M
T
S
48
D0:D7
T
WRI
ODE
T
, DMA M
T
SI
T
S
D0:D7
below trigger level
ODE
TX FIFO drops
T
D
S
ISR is read
ISABLED
D0:D7
T
]
FOR
C
S
Last Data Byte
xr
HANNELS
Transmitted
D0:D7
TXDMA#
TX FIFO
Empty
T
SRT
T
REV. 3.0.1
A-D