Renesas SH7781 User Manual
Page 949
19. Display Unit (DU)
Rev.1.00 Jan. 10, 2008 Page 919 of 1658
REJ09B0261-0100
Bit Bit
Name
Initial
Value R/W
Internal
Update Description
9, 8
⎯ All
0
R
⎯ Reserved
These bits are always read as 0. The write
value should always be 0.
7 to 2
CP3_000B to
CP3_255B
Undefined R/W
Yes
Color Palette 3_000 to 255 Blue
Blue-color data of color palette 3 should be set.
1, 0
⎯ All
0
R
⎯ Reserved
These bits are always read as 0. The write
value should always be 0.
19.3.51
Color Palette 4 Register 000 to 255 (CP4_000R to CP4_255R)
The color palette 4 registers 000 to 255 (CP4_000R to CP4_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.
R/W:
Internal update:
R/W:
Internal update:
16
17
18
19
20
21
22
23
24
25
26
27
28
29
31
30
Bit:
Initial value:
R
R
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
O
O
O
O
O
O
O
O
O
O
O
O
O
O
0
0
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
CP4_000R to CP4_255R
CP4_000A to CP4_255A
R
R
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
O
O
O
O
O
O
O
O
O
O
O
O
0
0
—
—
—
—
—
—
0
0
—
—
—
—
—
—
—
—
CP4_000B to CP4_255B
—
—
CP4_000G to CP4_255G
0
1
2
3
4
5
6
7
8
9
10
11
12
13
15
14
Bit:
Initial value: