xr16l784iv Exar Corporation, xr16l784iv Datasheet - Page 47
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xr16l784iv
Manufacturer Part Number
xr16l784iv
Description
High Performance 2.97v To 5.5v Quad Uart
Manufacturer
Exar Corporation
Datasheet
1.XR16L784IV.pdf
(52 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
xr16l784iv-F
Manufacturer:
Exar Corporation
Quantity:
10 000
Part Number:
xr16l784iv-F
Manufacturer:
EXAR/艾科嘉
Quantity:
20 000
xr
REV. 1.2.2
F
F
F
IGURE
IGURE
IGURE
IN T # *
IO W #
RX
INT#
IOR#
(Reading data out
of RX FIFO)
T X
(U n lo a d in g )
(L o a d in g d a ta
in to T H R )
*T X in te rru p t is c le a re d w h e n th e IS R is re a d o r w h e n d a ta is lo a d e d in to th e T H R .
(Unloading)
(Loading data
*TX interrupt is cleared when the ISR is read or when TX FIFO fills up to the trigger level.
22. T
23. R
24. T
into FIFO )
TX
INT#*
IO W #
IE R [1 ]
e n a b le d
RANSMIT
RANSMIT
ECEIVE
TX FIFO
T
Em pty
W R I
enabled
IER [1]
Start
Bit
S
D0:D7
I
NTERRUPT
I
S ta rt
I
NTERRUPT
Trigger Level or RX Data
NTERRUPT
B it
RX FIFO fills up to RX
S
IS R is re a d
Start
Tim eout
B it
ISR is read
D 0 :D 7
S
D0:D7
T
D 0:D 7
T
T
IMING
TX FIFO fills up
IMING
IMING
to trigger level
T
T
S top
Bit
W R I
T
S to p
[FIFO M
B it
[N
[FIFO M
D0:D7
ON
T
S
SSI
-FIFO M
D 0:D 7
ODE
ODE
S
IS R is re a d
]
T
D0:D7
D 0 :D 7
]
S
47
ODE
HIGH PERFORMANCE 2.97V TO 5.5V QUAD UART
D 0:D 7
T
W R I
]
T
below trigger level
T
S
TX FIFO drops
T
D0:D7
SI
T
S
D0:D 7
T
S
T
T
W R I
RRI
D0:D7
T
S
ISR is read
D 0:D 7
T
RX FIFO drops
Trigger Level
below RX
S
T
D0:D7
IS R is re a d
D 0 :D 7
T
RR
T
S
Last Data B yte
Transm itted
D 0:D 7
XR16L784
T