XR16C854CV EXAR [Exar Corporation], XR16C854CV Datasheet - Page 46
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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
F
IGURE
IGURE
INT
RXRDY#
INT*
TXRDY#
IOW#
RX
IOR#
TX
(Unloading)
(Loading data
into THR)
(Reading data
out of RHR)
*INT is cleared when the ISR is read or when data is loaded into the THR.
20. R
21. T
IER[1]
enabled
RANSMIT
ECEIVE
T
WRI
R
T
Start
Start
Bit
WT
R
EADY
Bit
EADY
ISR is read
& I
D0:D7
T
& I
D0:D7
SRT
NTERRUPT
NTERRUPT
T
WRI
Stop
Stop
Bit
Bit
T
RR
T
in RHR
1 Byte
Ready
Active
T
IMING
T
T
Data
T
SSR
IMING
SSR
WT
[N
[N
ISR is read
ON
T
D0:D7
ON
D0:D7
SRT
46
-FIFO M
-FIFO M
ODE
ODE
T
RR
in RHR
1 Byte
]
Ready
Active
T
T
Data
]
FOR
SSR
SSR
FOR
T
C
WRI
C
HANNELS
HANNELS
T
WT
D0:D7
A-D
A-D
ISR is read
D0:D7
T
SRT
xr
TXNonFIFO
T
RR
T
in RHR
1 Byte
Ready
Active
SSR
T
Data
SSR
RXNFM
REV. 3.0.1