lpc47s457-ns Standard Microsystems Corp., lpc47s457-ns Datasheet - Page 73
lpc47s457-ns
Manufacturer Part Number
lpc47s457-ns
Description
Advanced I/o With X-bus Interface
Manufacturer
Standard Microsystems Corp.
Datasheet
1.LPC47S457-NS.pdf
(259 pages)
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Part Number:
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SMSC DS – LPC47S45x
*DLAB is Bit 7 of the Line Control Register (ADDR = 3).
Note 1: Bit 0 is the least significant bit. It is the first bit serially transmitted or received.
Note 2: When operating in the XT mode, this bit will be set any time that the transmitter shift register is empty.
ADDR = 0
DLAB = 0
ADDR = 0
DLAB = 0
ADDR = 1
DLAB = 0
ADDR = 2
ADDR = 2
ADDR = 3
ADDR = 4
ADDR = 5
ADDR = 6
ADDR = 7
ADDR = 0
ADDR = 1
DLAB = 1
DLAB = 1
ADDRESS*
REGISTER
Table 32 − Register Summary for an Individual UART Channel
Receive Buffer Register (Read Only)
Transmitter Holding Register (Write
Only)
Interrupt Enable Register
Interrupt Ident. Register (Read Only)
FIFO Control Register (Write Only)
Line Control Register
MODEM Control Register
Line Status Register
MODEM Status Register
Scratch Register (Note 4)
Divisor Latch (LS)
Divisor Latch (MS)
REGISTER NAME
DATASHEET
Page 73 of 259
REGISTER
SYMBOL
(Note 7)
MCR
MSR
SCR
DLM
RBR
THR
FCR
LCR
LSR
DDL
IER
IIR
Data Bit 0
(Note 1)
Data Bit 0
Enable
Received
Data
Available
Interrupt
(ERDAI)
"0" if
Interrupt
Pending
FIFO Enable RCVR FIFO
Word
Length
Select Bit 0
(WLS0)
Data
Terminal
Ready
(DTR)
Data Ready
(DR)
Delta Clear
to Send
(DCTS)
Bit 0
Bit 0
Bit 8
BIT 0
Data Bit 1
Data Bit 1
Enable
Transmitter
Holding
Register
Empty
Interrupt
(ETHREI)
Interrupt ID
Bit
Reset
Word
Length
Select Bit 1
(WLS1)
Request to
Send (RTS)
Overrun
Error (OE)
Delta Data
Set Ready
(DDSR)
Bit 1
Bit 1
Bit 9
BIT 1
Rev. 04-30-07
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