XR16V2650IL32 EXAR [Exar Corporation], XR16V2650IL32 Datasheet - Page 14

• Manufacturer Part Number: XR16V2650IL32
• Description: HIGH PERFORMANCE DUART WITH 32-BYTE FIFO
• Manufacturer: EXAR [Exar Corporation]

XR16V2650
HIGH PERFORMANCE DUART WITH 32-BYTE FIFO
F
F
IGURE
IGURE
1 6X or 8X or 4 X C lo c k
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 nd 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 bits
T ag s in
E rro r
4:2
Data FIFO
Receive
FIFO
Receive
Data
R ec e iv e D a ta S h ift
-FIFO M
R e g iste r (R S R )
AND
H old in g R eg is te r
R ece ive D a ta
A
PRELIMINARY
UTO
ODE
(R H R )
Validation
Data falls to
Trigger=16
Data Bit
Data fills to
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 alid atio n
D a ta B it
ONTROL
M
R H R Inte rrup t (IS R b it-2)
ODE
Receive Data Characters
R e ce ive D a ta C h a ra c te rs
R X F IF O 1
RXFIFO1
REV. P1.0.0