參數(shù)資料
型號(hào): XR17L152
廠商: Exar Corporation
英文描述: 3.3V PCI BUS DUAL UART
中文描述: 3.3V的PCI總線雙UART
文件頁(yè)數(shù): 27/55頁(yè)
文件大?。?/td> 318K
代理商: XR17L152
XR17L152
3.3V PCI BUS DUAL UART
REV. 1.1.0
á
DISCONTINUED
27
T
ABLE
11: UART CHANNEL CONFIGURATION REGISTERS DESCRIPTION.
S
HADED
BITS
ARE
ENABLED
BY
EFR B
IT
-4.
A
DDRESS
A3-A0
R
EG
N
AME
R
EAD
/
W
RITE
B
IT
-7
B
IT
-6
B
IT
-5
B
IT
-4
B
IT
-3
B
IT
-2
B
IT
-1
B
IT
-0
C
OMMENT
0 0 0 0
RHR
R
Bit-7
Bit-6
Bit-5
Bit-4
Bit-3
Bit-2
Bit-1
Bit-0
LCR[7]=0
0 0 0 0
THR
W
Bit-7
Bit-6
Bit-5
Bit-4
Bit-3
Bit-2
Bit-1
Bit-0
LCR[7]=0
0 0 0 0
DLL
R/W
Bit-7
Bit-6
Bit-5
Bit-4
Bit-3
Bit-2
Bit-1
Bit-0
LCR[7]=1
0 0 0 1
DLM
R/W
Bit-7
Bit-6
Bit-5
Bit-4
Bit-3
Bit-2
Bit-1
Bit-0
LCR[7]=1
0 0 0 1
IER
R/W
0/
0/
0/
0
Modem
Status Int.
Enable
RX Line
Status Int.
Enable
TX Empty
Int.
Enable
RX Data
Int.
Enable
CTS/
DSR# Int.
Enable
RTS/
DTR# Int.
Enable
Xon/Xoff/
Sp. Char.
Int.
Enable
0 0 1 0
ISR
R
FIFOs
Enable
FIFOs
Enable
0/
0/
INT
Source
Bit-3
INT
Source
Bit-2
INT
Source
Bit-1
INT
Source
Bit-0
Delta-
Flow Cntl
Xoff/spe-
cial char
0 0 1 0
FCR
W
RX FIFO
Trigger
RX FIFO
Trigger
0/
0/
DMA
Mode
TX FIFO
Reset
RX FIFO
Reset
FIFOs
Enable
TX FIFO
Trigger
TX FIFO
Trigger
0 0 1 1
LCR
R/W
Divisor
Enable
Set TX
Break
Set Parity Even Par-
ity
Parity
Enable
Stop Bits
Word
Length
Bit-1
Word
Length
Bit-0
0 1 0 0
MCR
R/W
0/
0/
0/
Internal
Lopback
Enable
(OP2)
1
(OP1)
1
RTS# Pin
Control
DTR# Pin
Control
BRG
Prescaler
IR
Enable
XonAny
RTS/DTR
Flow Sel
0 1 0 1
LSR
R/W
RX FIFO
E
RROR
TSR
Empty
THR
Empty
RX Break RX Fram-
ing Error
RX Parity
Error
RX Over-
run
RX Data
Ready
0 1 1 0
MSR
R
CD
RI
DSR
CTS
Delta
CD#
Delta
RI#
Delta
DSR#
Delta
CTS#
MSR
W
RS485
DLY-3
RS485
DLY-2
RS485
DLY-1
RS485 DLY-
0
Reserved Reserved Reserved Reserved
0 1 1 1
SPR
R/W
Bit-7
Bit-6
Bit-5
Bit-4
Bit-3
Bit-2
Bit-1
Bit-0
User Data
1 0 0 0
FCTR
R/W
TRG
Table
Bit-1
TRG
Table
Bit-0
Auto
RS485
Enable
Invert IR
RX Input
RTS/DTR
Hyst Bit-3
RTS/DTR
Hyst Bit-2
RTS/DTR
Hyst Bit-1
RTS/DTR
Hyst Bit-0
1 0 0 1
EFR
R/W
Auto CTS/
DSR
Enable
Auto RTS/
DTR
Enable
Special
Char
Select
Enable
IER [7:5],
ISR [5:4],
FCR[5:4],
MCR[7:5,2]
MSR[7:4]
Software
Flow Cntl
Bit-3
Software
Flow Cntl
Bit-2
Software
Flow Cntl
Bit-1
Software
Flow Cntl
Bit-0
1 0 1 0
TXCNT
R
Bit-7
Bit-6
Bit-5
Bit-4
Bit-3
Bit-2
Bit-1
Bit-0
1 0 1 0
TXTRG
W
Bit-7
Bit-6
Bit-5
Bit-4
Bit-3
Bit-2
Bit-1
Bit-0
1 0 1 1
RXCNT
R
Bit-7
Bit-6
Bit-5
Bit-4
Bit-3
Bit-2
Bit-1
Bit-0
1 0 1 1
RXTRG
W
Bit-7
Bit-6
Bit-5
Bit-4
Bit-3
Bit-2
Bit-1
Bit-0
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