Epson Research and Development Page 127

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Hardware Functional Specification S1D13504
Issue Date: 01/01/30 X19A-A-002-18
8 Bit-Per-Pixel Color Mode

Figure 12-7: 8 Bit-Per-Pixel – 256-Level Color Mode Look-Up Table Architec ture

76543210

R2 R1 R0 G2 G1 G0 B1 B0

256 Color Data Format: Red Look-Up Table

0
1
2
3
3-bit pixel data
4
5
6
7
8
9
A
B
C
D
E
F
Bank 0
Bank 1
Bank Select bit
REG[27h] bit 4
4-bit Red data output
Bank
Select
Logic
Entry
Select
Logic
0
1
000
001
010
011
Selected Bank
100
101
110
111

Green Look-Up Table

0
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
Bank 0
Bank 1
Bank Select bit
REG[27h] bit 0
4-bit Green data output
Bank
Select
Logic
Entry
Select
Logic
0
1
000
001
010
011
Selected Bank
100
101
110
111

Blue Look-Up Table

0
1
2
3
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 [3:2]
4-bit Blue data output
Bank
Select
Logic
Entry
Select
Logic
00
01
10
11
00
01
10
11
Selected Bank
2-bit pixel data
3-bit pixel data