SED1374 Datasheet, PDF (80/420 Pages) Epson Company – SED1374 Embedded Memory Color LCD Controller

Page 72
Epson Research and Development
Vancouver Design Center
11 Look-Up Table Architecture
Display Mode
2-level gray
4-level gray
16-level gray
2 color
4 color
16 color
256 color
Table 11-1: Look-Up Table Configurations
RED
4 bank of 2
4 banks of 4
1 bank of 16
2 banks of 8
4-bit wide Look-Up Table
GREEN
4 banks of 2
4 banks of 4
1 bank of 16
4 bank of 2
4 banks of 4
1 bank of 16
2 banks of 8
BLUE
4 bank of 2
4 banks of 4
1 bank of 16
4 banks of 4
Indicates the Look-Up Table is not used for that display mode
The following figures are intended to show the display data output path only. The CPU
R/W access to the individual Look-Up Tables is not affected by the various ‘banking’
configurations.
11.1 Gray Shade Display Modes
2-Level Gray Shade Mode
1-bit pixel data
Green Look-Up Table
0
1
2 Gray Data Format:
76543210
A0 A1 A2 A3 A4 A5 A6 A7
See Section 10
2
3
Bank
Select
4-bit display data output
Logic
4
5
6
7
Green Bank Select
REG[16h] bits [3:2]
Figure 11-1: 2-Level Gray-Shade Mode Look-Up Table Architecture
SED1374
X26A-A-001-02
Hardware Functional Specification
Issue Date: 99/04/29