SH7785 Datasheet, PDF (948/1692 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer

19. Display Unit (DU)
19.3.50 Color Palette 3 Register 000 to 255 (CP3_000R to CP3_255R)
The color palette 3 registers 000 to 255 (CP3_000R to CP3_255R) are a group of 256 registers
which set six bits for each of the RGB components of a color, and are used as a color palette
capable of displaying 256 colors among 260,000 possible colors. Bits 31 to 24 are used as a blend
ratio. The values are valid for 8 bits/pixel data display.
For details of color palette operation, refer to section 19.4.8, Color Palettes.
Values are retained during power-on reset and manual reset.
Bit: 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
CP3_000A to CP3_255A
CP3_000R to CP3_255R
——
Initial value: — — — — — — — — — — — — — — 0 0
R/W: R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R R
Internal update: O O O O O O O O O O O O O O
Bit: 15 14 13 12 11 10 9
8
7
6
5
4
3
2
1
0
CP3_000G to CP3_255G
——
CP3_000B to CP3_255B
——
Initial value: — — — — — — 0
0 —————— 0
0
R/W: R/W R/W R/W R/W R/W R/W R R R/W R/W R/W R/W R/W R/W R R
Internal update: O O O O O O
OOOOOO
Initial
Bit
Bit Name Value R/W
31 to 24 CP3_000A to Undefined R/W
CP3_255A
23 to 18 CP3_000R to Undefined R/W
CP3_255R
17, 16 ⎯
All 0
R
15 to 10 CP3_000G to Undefined R/W
CP3_255G
Internal
Update Description
Yes
Color Palette 3_000 to 255 Blending Ratio
To enable this bit, the ABRE bit in DEFR
should be set to 1. In the initial state, this bit is
not enabled.
When the PnBRSL bits in PnALPHAR are 10,
the value is the alpha value, which is the blend
ratio.
Yes
Color Palette 3_000 to 255 Red
Red-color data of color palette 3 should be set.
⎯
Reserved
These bits are always read as 0. The write
value should always be 0.
Yes
Color Palette 3_000 to 255 Green
Green-color data of color palette 3 should be
set.
Rev.1.00 Jan. 10, 2008 Page 918 of 1658
REJ09B0261-0100