REV. 1.2.2 UNIVERSAL (3.3V AND 5V) PCI BUS OCTAL UART 39 1 0 1 0 TXTRG - Transmit FIFO Trigger Level Write-only 1 0 1 RXCNT - Recei" />
參數(shù)資料
型號(hào): XR17D158CV-0A-EVB
廠(chǎng)商: Exar Corporation
文件頁(yè)數(shù): 33/73頁(yè)
文件大小: 0K
描述: EVAL BOARD FOR XR17D158 144TQFP
標(biāo)準(zhǔn)包裝: 1
系列: *
xr
XR17D158
REV. 1.2.2
UNIVERSAL (3.3V AND 5V) PCI BUS OCTAL UART
39
1
0
1
0
TXTRG - Transmit FIFO Trigger Level
Write-only
1
0
1
RXCNT - Receive FIFO Level Counter
Read-only
1
0
1
RXTRG - Receive FIFO Trigger Level
Write-only
1
0
Xoff-1 - Xoff Character 1
Write-only
1
0
Xchar
Read-only
Xon,Xoff Rcvd. Flags
1
0
1
Xoff-2 - Xoff Character 2
Write-only
1
0
Xon-1 - Xon Character 1
Write-only
1
Xon-2 - Xon Character 2
Write-only
TABLE 13: UART CHANNEL CONFIGURATION REGISTERS DESCRIPTION. SHADED BITS ARE ENABLED BY EFR BIT-4.
ADDRESS
A3-A0
REG
NAME
READ/
WRITE
BIT-7
BIT-6
BIT-5
BIT-4
BIT-3
BIT-2
BIT-1
BIT-0
COMMENT
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
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/
INT
Source
Bit-3
INT
Source
Bit-2
INT
Source
Bit-1
INT
Source
Bit-0
Delta-
Flow Cntl
Xoff/special
char
0 0 1 0
FCR
W
RX FIFO
Trigger
RX FIFO
Trigger
0/
DMA
Mode
TX FIFO
Reset
RX FIFO
Reset
FIFOs
Enable
TXFIFO
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/
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
ERROR
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
TABLE 12: UART CHANNEL CONFIGURATION REGISTERS
ADDRESS
REGISTER
READ/WRITE
COMMENTS
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