XR16V794 Exar Corporation, XR16V794 Datasheet - Page 49
XR16V794
Manufacturer Part Number
XR16V794
Description
HIGH PERFORMANCE 2.25V TO 3.6V QUAD UART
Manufacturer
Exar Corporation
Datasheet
1.XR16V794.pdf
(53 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
XR16V794IV-F
Manufacturer:
LT
Quantity:
1 500
Company:
Part Number:
XR16V794IV-F
Manufacturer:
Exar Corporation
Quantity:
10 000
Company:
Part Number:
XR16V794IVTR-F
Manufacturer:
OMRON
Quantity:
12
REV. 1.0.0
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.
20. T
21. R
22. T
into FIFO )
TX
INT#*
IO W #
IE R [1 ]
e n a b le d
RANSMIT
RANSMIT
ECEIVE
T
TX FIFO
Em pty
W R I
enabled
IER [1]
Start
Bit
S
HIGH PERFORMANCE 2.25V TO 3.6V QUAD UART WITH FRACTIONAL BAUD RATE
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
D 0:D 7
T
T
IMING
T
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
49
ODE
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
T
RR
S
Last Data B yte
Transm itted
D 0:D 7
XR16V794
T