REV. 1.0.3 . TABLE 9: INTE" />
參數(shù)資料
型號(hào): XR16V2552IL-0B-EB
廠商: Exar Corporation
文件頁(yè)數(shù): 15/46頁(yè)
文件大?。?/td> 0K
描述: EVAL BOARD FOR V2552 32QFN
標(biāo)準(zhǔn)包裝: 1
系列: *
XR16V2552
22
HIGH PERFORMANCE DUART WITH 16-BYTE FIFO
REV. 1.0.3
.
TABLE 9: INTERNAL REGISTERS DESCRIPTION. SHADED BITS ARE ENABLED WHEN EFR BIT-4=1
ADDRESS
A2-A0
REG
NAME
READ/
WRITE
BIT-7
BIT-6
BIT-5
BIT-4
BIT-3
BIT-2
BIT-1
BIT-0
COMMENT
16C550 Compatible Registers
0 0 0
RHR
RD
Bit-7
Bit-6
Bit-5
Bit-4
Bit-3
Bit-2
Bit-1
Bit-0
LCR[7]=0
0 0 0
THR
WR
Bit-7
Bit-6
Bit-5
Bit-4
Bit-3
Bit-2
Bit-1
Bit-0
0 0 1
IER
RD/WR
0/
Modem
Stat. Int.
Enable
RX Line
Stat.
Int.
Enable
TX
Empty
Int
Enable
RX
Data
Int.
Enable
CTS Int.
Enable
RTS Int.
Enable
Xoff Int.
Enable
Sleep
Mode
Enable
0 1 0
ISR
RD
FIFOs
Enabled
FIFOs
Enabled
0/
INT
Source
Bit-3
INT
Source
Bit-2
INT
Source
Bit-1
INT
Source
Bit-0
RTS/
CTS INT
Status
Xon/Xoff
special
INT
0 1 0
FCR
WR
RXFIFO
Trigger
RXFIFO
Trigger
0/
DMA
Mode
Enable
TX
FIFO
Reset
RX
FIFO
Reset
FIFOs
Enable
TXFIFO
Trigger
TXFIFO
Trigger
0 1 1
LCR
RD/WR Divisor
Enable
Set TX
Break
Set
Parity
Even
Parity
Enable
Stop
Bits
Word
Length
Bit-1
Word
Length
Bit-0
1 0 0
MCR
RD/WR
0/
Internal
Lopback
Enable
OP2#
Output
Control
OP1#
RTS#
Output
Control
DTR#
Output
Control
LCR
≠ 0xBF
BRG
Pres-
caler
IR Mode
Enable
Xon any
IR Input
Invert
1 0 1
LSR
RD
RX FIFO
Global
Error
THR &
TSR
Empty
THR
Empty
RX
Break
RX
Framing
Error
RX
Parity
Error
RX
Over-
run
Error
RX
Data
Ready
1 1 0
MSR
RD
CD#
Input
RI#
Input
DSR#
Input
CTS#
Input
Delta
CD#
Delta
RI#
Delta
DSR#
Delta
CTS#
1 1 1
SPR
RD/WR
Bit-7
Bit-6
Bit-5
Bit-4
Bit-3
Bit-2
Bit-1
Bit-0
Baud Rate Generator Divisor
0 0 0
DLL
RD/WR
Bit-7
Bit-6
Bit-5
Bit-4
Bit-3
Bit-2
Bit-1
Bit-0
LCR[7]=1
LCR
≠ 0xBF
0 0 1
DLM
RD/WR
Bit-7
Bit-6
Bit-5
Bit-4
Bit-3
Bit-2
Bit-1
Bit-0
0 1 0
AFR
RD/WR
Rsvd
RXRDY#
Select
Baudout#
Select
Concur-
rent Write
LCR[7]=1
LCR
≠ 0xBF
EFR[4] = 0
0 1 0
DLD
RD/WR
0
4X Mode 8X Mode
Bit-3
Bit-2
Bit-1
Bit-0
LCR[7]=1
LCR
≠ 0xBF
EFR[4] = 1
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