GMS30C7201 Datasheet, PDF (148/352 Pages) Hynix Semiconductor – 60MHz operation frequency Low power consumption

LCD & VGA Controllers
11.12 LCD Palette registers
The LCD palette registers are a set of 256 word-aligned registers that allow the LCD to be
programmed. The format of the palette data is shown below. The format of the data is chosen
such that it is compatible with the format of the VGA palette data. In addition to the LCD palette
write address area, there is also an area where the LCD and VGA palettes may be written
simultaneously.
Bit
3:0
7:4
11:8
15:12
19:16
23:20
31:24
Name
-
R
-
G
-
B
-
Description
Reserved
Red palette data
Reserved
Green palette data
Reserved
Blue palette data
Reserved
Table 11-12: LCD Palette Registers
11.12.1VGA Palette registers
The VGA palette registers provide the same functionality as the LCD palette registers, but for
the VGA. The VGA palette register entries have 24 valid bits, because there are 8 bits per color
gun, rather than four for the LCD. There is a read/write area for VGA registers only, and a write-
only area to write both the VGA and LCD palettes simultaneously.
Bit
7:0
15:8
23:16
31:24
Name
R
G
B
-
Description
Red palette data
Green palette data
Blue palette data
Reserved
Table 11-13: VGA Palette registers
11-20
GMS30C7201 Data Sheet