UM10503
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User manual
Rev. 1.3 — 6 July 2012
785 of 1269
NXP Semiconductors
UM10503
Chapter 27: LPC43xx LCD
27.6.24 Cursor Raw Interrupt Status register
The CRSR_INTRAW register is set to indicate a cursor interrupt. When enabled via the
CrsrIM bit in the CRSR_INTMSK register, provides the interrupt to the system interrupt
controller.
27.6.25 Cursor Masked Interrupt Status register
The CRSR_INTSTAT register is set to indicate a cursor interrupt providing that the
interrupt is not masked in the CRSR_INTMSK register.
27.7 Functional description
27.7.1 AHB interfaces
The LCD controller includes two separate AHB interfaces. The first, an AHB slave
interface, is used primarily by the CPU to access control and data registers within the LCD
controller. The second, an AHB master interface, is used by the LCD controller for DMA
access to display data stored in memory elsewhere in the system. The LCD DMA
controller can access any SRAM on AHB and the external memory.
27.7.1.1 AMBA AHB slave interface
The AHB slave interface connects the LCD controller to the AHB bus and provides CPU
accesses to the registers and palette RAM.
Table 626. Cursor Raw Interrupt Status register (CRSR_INTRAW, address 0x4000 8C28) bit
description
Bit
Symbol
Description
Reset
value
0
CRSRRIS
Cursor raw interrupt status.
The cursor interrupt status is set immediately after the last data
is read from the cursor image for the current frame.
This bit is cleared by writing to the CrsrIC bit in the
CRSR_INTCLR register.
0x0
31:1
-
Reserved, user software should not write ones to reserved bits.
The value read from a reserved bit is not defined.
-
Table 627. Cursor Masked Interrupt Status register (CRSR_INTSTAT, address 0x4000 8C2C)
bit description
Bit
Symbol
Description
Reset
value
0
CRSRMIS
Cursor masked interrupt status.
The cursor interrupt status is set immediately after the last data
read from the cursor image for the current frame, providing that
the corresponding bit in the CRSR_INTMSK register is set.
The bit remains clear if the CRSR_INTMSK register is clear.
This bit is cleared by writing to the CRSR_INTCLR register.
0x0
31:1
-
Reserved, user software should not write ones to reserved bits.
The value read from a reserved bit is not defined.
-