xr16v2751im Exar Corporation, xr16v2751im Datasheet - Page 23

• Manufacturer Part Number: xr16v2751im
• Description: High Performance Duart With 64-byte Fifo And Powersave Feature
• Manufacturer: Exar Corporation

REV. 1.0.1
.
A
A2-A0
DDRESS
1 1 1
1 1 1
0 0 0
0 0 0
0 0 1
0 1 0
0 1 0
0 1 1
1 0 0
1 0 1
1 1 0
1 1 1
T
EMSR
N
MCR
FLVL
RHR
MSR
THR
FCR
LCR
SPR
R
LSR
ABLE
IER
ISR
AME
EG
9: I
RD/WR
RD/WR Divisor
RD/WR
RD/WR
W
R
WR
WR
WR
RD
RD
RD
RD
RD
EAD
RITE
HIGH PERFORMANCE DUART WITH 64-BYTE FIFO AND POWERSAVE FEATURE
NTERNAL
/
RX FIFO
RX FIFO
CTS Int.
Enabled
Enable
Trigger
Enable
Global
FIFOs
Mode
B
Pres-
BRG
caler
Error
Input
Sam-
pling
Rate
Bit-7
Bit-7
CD#
Bit-7
Bit-7
16X
IT
0/
0/
-7
R
EGISTERS
RX FIFO
Imd/Dly#
IR Mode
RTS Int.
Enabled
ENable
Enable
Trigger
Set TX
THR &
FIFOs
Empty
Break
Inter-
B
Input
Error
Bit-6
Bit-6
Bit-6
Bit-6
TSR
LSR
rupt.
RI#
IT
0/
0/
-6
16C550 Compatible Registers
D
ESCRIPTION
TX FIFO
Set Par-
XonAny
Xoff Int.
Enable
Source
Trigger
Empty
DSR#
B
Hyst.
Input
Bit-5
Bit-5
Bit-5
THR
Bit-5
Auto
RTS
Bit-5
INT
bit-3
IT
ity
0/
0/
0/
0/
-5
23
TX FIFO
Lopback
Internal
Source
Enable
Trigger
Enable
Break
.
Sleep
Mode
Parity
CTS#
B
Even
Input
Hyst.
Bit-4
Bit-4
Bit-4
Bit-4
Auto
Bit-4
RTS
bit-2
INT
S
RX
IT
0/
0/
0/
HADED BITS ARE ENABLED WHEN
-4
OP2#/INT
RX Fram-
Inversion
ing Error
Stat. Int.
Modem
Source
Enable
Enable
Enable
Enable
RS485
Output
Output
Mode
Parity
B
DMA
Delta
Bit-3
Bit-3
Bit-3
Bit-3
Auto
Bit-3
CD#
INT
IT
-3
RX Line
Enable
Source
(OP1#)
Reset
Rsrvd
Parity
Rsrvd
B
FIFO
Delta
Error
Bit-2
Bit-2
Stat.
Bit-2
Stop
Bit-2
Bit-2
INT
Bits
RI#
Int.
RX
TX
IT
-2
Source
Control
Enable
Length
Output
Empty
Reset
DSR#
Rx/Tx
Count
RTS#
Over-
B
Word
Delta
FIFO
Error
FIFO
Bit-1
Bit-1
Bit-1
Bit-1
Bit-1
Bit-1
INT
RX
RX
run
TX
Int
IT
-1
EFR B
Source
Control
Enable
Enable
Length
Output
Ready
FIFOs
DTR#
Rx/Tx
Count
CTS#
B
Word
Delta
FIFO
Bit-0
Bit-0
Data
Bit-0
Bit-0
Data
Bit-0
Bit-0
INT
RX
Int.
RX
IT
IT
XR16V2751
-0
-4=1
LCR ≠ 0xBF
LCR ≠ 0xBF
LCR ≠ 0xBF
LCR ≠ 0xBF
FCTR[6]=0
FCTR[6]=1
C
LCR[7]=0
OMMENT