UM10503
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2012. All rights reserved.
User manual
Rev. 1.3 — 6 July 2012
777 of 1269
NXP Semiconductors
UM10503
Chapter 27: LPC43xx LCD
27.6.8 Interrupt Mask register
The INTMSK register controls whether various LCD interrupts occur.Setting bits in this
register enables the corresponding raw interrupt INTRAW status bit values to be passed
to the INTSTAT register for processing as interrupts.
27.6.9 Raw Interrupt Status register
The INTRAW register contains status flags for various LCD controller events. These flags
can generate an interrupts if enabled by mask bits in the INTMSK register.
Table 610. Interrupt Mask register (INTMSK, address 0x4000 801C) bit description
Bit
Symbol
Description
Reset
value
0
-
Reserved, user software should not write ones to reserved bits.
The value read from a reserved bit is not defined.
-
1
FUFIM
FIFO underflow interrupt enable.
0: The FIFO underflow interrupt is disabled.
1: Interrupt will be generated when the FIFO underflows.
0x0
2
LNBUIM
LCD next base address update interrupt enable.
0: The base address update interrupt is disabled.
1: Interrupt will be generated when the LCD base address
registers have been updated from the next address registers.
0x0
3
VCOMPIM
Vertical compare interrupt enable.
0: The vertical compare time interrupt is disabled.
1: Interrupt will be generated when the vertical compare time (as
defined by LcdVComp field in the CTRL register) is reached.
0x0
4
BERIM
AHB master error interrupt enable.
0: The AHB Master error interrupt is disabled.
1: Interrupt will be generated when an AHB Master error occurs.
0x0
31:5
-
Reserved, user software should not write ones to reserved bits.
The value read from a reserved bit is not defined.
-
Table 611. Raw Interrupt Status register (INTRAW, address 0x4000 8020) bit description
Bit
Symbol
Description
Reset
value
0
-
Reserved, user software should not write ones to reserved bits.
The value read from a reserved bit is not defined.
-
1
FUFRIS
FIFO underflow raw interrupt status.
Set when either the upper or lower DMA FIFOs have been read
accessed when empty causing an underflow condition to occur.
Generates an interrupt if the FUFIM bit in the INTMSK register is
set.
2
LNBURIS
LCD next address base update raw interrupt status.
Mode dependent. Set when the current base address registers
have been successfully updated by the next address registers.
Signifies that a new next address can be loaded if double
buffering is in use.
Generates an interrupt if the LNBUIM bit in the INTMSK register
is set.
0x0