Epson CMOS 32-Bit Single Chip Microcomputer S1C33L03 - Look-Up Tables

VII LCD CONTROLLER BLOCK: LCD CONTROLLER
S1C33L03 FUNCTION PART EPSON B-VII-2-11
A-1
B-VII
LCDC
Look-up Tables
The LCD controller contains a look-up table consisting of 16 4-bit entries, one for each of the RGB color elements
(red, green, and blue).
4-bit luminance data
Pixel data
The pixel data
selects an LUT entry.
4-bit display data (R)
Red look-up table
0
1
2
3
:
:
14
15
4-bit luminance data
Pixel data 4-bit display data (G or Gray)
Green look-up table
0
1
2
3
:
:
14
15
4-bit luminance data
Pixel data 4-bit display data (B)
Blue look-up table
0
1
2
3
:
:
14
15
Figure 2.8 Configuration of the Look-up Tables
The pixel data in the display memory is used as an index to the look-up tables, so that luminance data is generated
based on the values in the entries indicated by the pixel data, before being output to the LCD panel.
The LCD controller can control reversal of the display. This control is exercised on the output of the look-up
tables.