User`s manual

12: LOOK-UP TABLE ARCHITECTURE
1-94 EPSON S1D13504 SERIES HARDWARE FUNCTIONAL
SPECIFICATION (X19A-A-002-17)
12 LOOK-UP TABLE ARCHITECTURE
The following depictions 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.
12.1 Gray Shade Display Modes
1 Bit-Per-Pixel Mode
Figure 12-1 1 Bit-Per-Pixel – 2-Level Gray-Shade Mode Look-Up Table Architecture
2 Bit-Per-Pixel Mode
Figure 12-2 2 Bit-Per-Pixel – 4-Level Gray-Shade Mode Look-Up Table Architecture
Table 12-1 Look-Up Table Configurations
Display Mode
4-Bit Wide Look-Up Table
RED GREEN BLUE
Black & White 1 bank of 2 entries
4-level gray 4 banks of 4 entries
16-level gray 1 bank of 16 entries
2 color 1 bank of 2 entries 1 bank of 2 entries 1 bank of 2 entries
4 color 4 banks of 4 entries 4 banks of 4 entries 4 banks of 4 entries
16 color 1 bank of 16 entries 1 bank of 16 entries 1 bank of 16 entries
256 color 2 banks of 8 entries 2 banks of 8 entries 4 banks of 4 entries
Indicates the Look-Up Table is not used for that display mode
Green Look-Up Table
0
1
1-bit pixel data
4-bit display data output
Entry
Select
Logic
0
1
Green Look-Up Table
0
1
2
3
2-bit pixel data
4
5
6
7
8
9
A
B
C
D
E
F
Bank 0
Bank 1
Bank 2
Bank 3
Bank Select bits [1:0]
REG[27h] bits [1:0]
4-bit display data output
Bank
Select
Logic
Entry
Select
Logic
00
01
10
11
00
01
10
11
Selected Bank