xr16v2652il32 Exar Corporation, xr16v2652il32 Datasheet - Page 14
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xr16v2652il32
Manufacturer Part Number
xr16v2652il32
Description
High Performance Duart With 32-byte Fifo
Manufacturer
Exar Corporation
Datasheet
1.XR16V2652IL32.pdf
(48 pages)
- Current page: 14 of 48
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XR16V2652
HIGH PERFORMANCE DUART WITH 32-BYTE FIFO
F
F
IGURE
IGURE
1 6 X o r 8 X o r 4 X C lo ck
Receive Data
16X or 8X or 4X Clock
Byte and Errors
8. R
9. R
32 bytes by 11-bit
( D L D [5 :4 ] )
a n d E rro rs
( DLD[5:4] )
D a ta B yte
R e ce ive
wide FIFO
ECEIVER
ECEIVER
O
O
PERATION IN NON
PERATION IN
Receive Data Shift
Register (RSR)
L S R b its
T a g s in
E rro r
4 :2
Data FIFO
Receive
FIFO
Receive
Data
R e ce ive D a ta S h ift
-FIFO M
R e g iste r (R S R )
AND
H o ld in g R e g iste r
R e ce ive D a ta
A
UTO
ODE
(R H R )
Validation
Data falls to
Trigger=16
Data fills to
Data Bit
FIFO
24
Example
8
RTS F
14
: - RX FIFO trigger level selected at 16 bytes
LOW
RTS# re-asserts when data falls below the flow
control trigger level to restart remote transmitter.
Enable by EFR bit-6=1, MCR bit-1.
RTS# de-asserts when data fills above the flow
control trigger level to suspend remote transmitter.
Enable by EFR bit-6=1, MCR bit-1.
RHR Interrupt (ISR bit-2) programmed for
(See Note Below)
desired FIFO trigger level.
FIFO is Enabled by FCR bit-0=1
C
V a lid a tio n
D a ta B it
ONTROL
M
R H R In te rru p t (IS R b it-2 )
ODE
Receive Data Characters
R e c e iv e D a ta C h a ra cte rs
R X F IF O 1
RXFIFO1
REV. 1.0.2
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