UM10503
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User manual
Rev. 1.3 — 6 July 2012
780 of 1269
NXP Semiconductors
UM10503
Chapter 27: LPC43xx LCD
Each word location contains two palette entries. This means that 128 word locations are
used for the palette. When configured for little-endian byte ordering, bits [15:0] are the
lower numbered palette entry and [31:16] are the higher numbered palette entry. When
configured for big-endian byte ordering this is reversed, because bits [31:16] are the low
numbered palette entry and [15:0] are the high numbered entry.
Note:
Only TFT displays use all of the palette entry bits.
27.6.15 Cursor Image registers
The CRSR_IMG register area contains 256-word wide values which are used to define
the image or images overlaid on the display by the hardware cursor mechanism. The
image must always be stored in LBBP mode (little-endian byte, big-endian pixel) mode, as
described in
. Two bits are used to encode color and transparency for
each pixel in the cursor.
Depending on the state of bit 0 in the CRSR_CFG register (see Cursor Configuration
register description), the cursor image RAM contains either four 32x32 cursor images, or
a single 64x64 cursor image.
The two colors defined for the cursor are mapped onto values from the CRSR_PAL0 and
CRSR_PAL0 registers (see Cursor Palette register descriptions).
Table 616. Color Palette registers (PAL, address 0x4000 8200 (PAL0) to 0x4000 83FC
(PAL255)) bit description
Bit
Symbol
Description
Reset
value
4:0
R04_0
Red palette data.
For STN displays, only the four MSBs, bits [4:1], are used. For
monochrome displays only the red palette data is used. All of the
palette registers have the same bit fields.
0x0
9:5
G04_0
Green palette data.
0x0
14:10
B04_0
Blue palette data.
0x0
15
I0
Intensity / unused bit.
Can be used as the LSB of the R, G, and B inputs to a 6:6:6 TFT
display, doubling the number of colors to 64K, where each color
has two different intensities.
0x0
20:16
R14_0
Red palette data.
For STN displays, only the four MSBs, bits [4:1], are used. For
monochrome displays only the red palette data is used. All of the
palette registers have the same bit fields.
0x0
25:21
G14_0
Green palette data.
0x0
30:26
B14_0
Blue palette data.
0x0
31
I1
Intensity / unused bit.
Can be used as the LSB of the R, G, and B inputs to a 6:6:6 TFT
display, doubling the number of colors to 64K, where each color
has two different intensities.
0x0