OM11077 NXP Semiconductors, OM11077 Datasheet - Page 448
OM11077
Manufacturer Part Number
OM11077
Description
MODULE DIMM LPC2478 ARM7
Manufacturer
NXP Semiconductors
Specifications of OM11077
Accessory Type
Module Card
For Use With/related Products
ARM-57TS-LPC2478
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
568-4742
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UM10237_4
User manual
4.4 UART1 Interrupt Enable Register (U1IER - 0xE001 0004, when
Table 399. UART1 Divisor Latch LSB Register (U1DLL - address 0xE001 0000 when
Table 400. UART1 Divisor Latch MSB Register (U1DLM - address 0xE001 0004 when
DLAB = 0)
The U1IER is used to enable the four UART1 interrupt sources.
Table 401. UART1 Interrupt Enable Register (U1IER - address 0xE001 0004 when DLAB = 0)
Bit
7:0
Bit
7:0
Bit
0
1
2
3
6:4
Symbol
DLLSB
Symbol
DLMSB
Symbol
RBR
Interrupt
Enable
THRE
Interrupt
Enable
RX Line
Interrupt
Enable
Modem
Status
Interrupt
Enable
-
DLAB = 1) bit description
DLAB = 1) bit description
bit description
Description
The UART1 Divisor Latch LSB Register, along with the U1DLM
register, determines the baud rate of the UART1.
Description
The UART1 Divisor Latch MSB Register, along with the U1DLL
register, determines the baud rate of the UART1.
Value
UART1
Rev. 04 — 26 August 2009
0
1
0
1
0
1
0
1
baudrate
Description
enables the Receive Data Available interrupt for UART1. It
also controls the Character Receive Time-out interrupt.
Disable the RDA interrupts.
Enable the RDA interrupts.
enables the THRE interrupt for UART1. The status of this
interrupt can be read from U1LSR[5].
Disable the THRE interrupts.
Enable the THRE interrupts.
enables the UART1 RX line status interrupts. The status of
this interrupt can be read from U1LSR[4:1].
Disable the RX line status interrupts.
Enable the RX line status interrupts.
enables the modem interrupt. The status of this interrupt
can be read from U1MSR[3:0].
Disable the modem interrupt.
Enable the modem interrupt.
Reserved, user software should not write ones to reserved
bits. The value read from a reserved bit is not defined.
=
------------------------------------------------------------------------------- -
16
×
(
256
×
U1DLM
pclk
Chapter 17: LPC24XX UART1
+
U1DLL
)
UM10237
© NXP B.V. 2009. All rights reserved.
Reset Value
0x01
Reset Value
0x00
448 of 792
Reset
Value
0
0
0
0
NA
(3)
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