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

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).
Pixel data
The pixel data
selects an LUT entry.
Pixel data
Pixel data
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.
S1C33L03 FUNCTION PART
Red look-up table
0
4-bit luminance data
1
2
3
:
:
14
15
Green look-up table
0 4-bit luminance data
1
2
3
:
:
14
15
Blue look-up table
0 4-bit luminance data
1
2
3
:
:
14
15
Figure 2.8 Configuration of the Look-up Tables
EPSON
VII LCD CONTROLLER BLOCK: LCD CONTROLLER
4-bit display data (R)
4-bit display data (G or Gray)
4-bit display data (B)
A-1
B-VII
LCDC
B-VII-2-11