S1D13503 Epson Electronics America, Inc., S1D13503 Datasheet - Page 80

• Manufacturer Part Number: S1D13503
• Description: S1d13503 Graphics Lcd Controller
• Manufacturer: Epson Electronics America, Inc.

Page 72
8.2 Look-Up Table Architecture
8.2.1 Gray Shade Display Modes
S1D13503
X18A-A-001-08
Note: the above depiction is 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.
4-Level Gray Shade Mode
Black & White
Display Mode
16-level gray
4-level gray
256 color
16 color
4 color
(Aux[0E] bits [7:6])
Bank Select bits [1:0]
2-bit pixel data
Table 8-8: Look-Up Table Configurations
1 bank of 16
4 banks of 4
2 banks of 8
Indicates the palette is not used for that display mode
RED
Figure 37: 4-Level Gray-Shade Mode Look-Up Table Architecture
4-bit wide Palette
1 bank of 16
1 bank of 16
4 banks of 4
4 banks of 4
2 banks of 8
GREEN
Green Look-Up Table
0
1
2
3
0
1
2
3
0
1
2
3
0
1
2
3
Bank 0
Bank 1
Bank 2
Bank 3
4 banks of 4
1 bank of 16
4 banks of 4
BLUE
Bank
Select
Logic
4-bit display data output
Hardware Functional Specification
Epson Research and Development
Vancouver Design Center
Issue Date: 01/01/29