Epson S1D13504 Technical Manual page 160

Page 20
Gray Shade Modes
S1D13504
X19A-G-002-07
This recommended palette assumes that you are using only bank 0 of the three color components.
By programming in the above fashion the following colors will result:
Table 3-12: Examples of 256 Pixel Colors Using Linear LUT
Pixel Value
(binary)
000 000 00
000 000 10
000 100 00
000 100 10
100 000 00
100 000 10
100 100 00
100 100 10
15 bpp Color
Since the Look-Up Table is bypassed in this mode, the LUT programming is unimportant. The
colors on the display are derived from only the top 4 bits of each color combination. Resulting in a
12
maximum of 2 =4096 colors.
16 bpp Color
Since the Look-Up Table is bypassed in this mode, the LUT programming is unimportant. The
colors on the display are derived from only the top 4 bits of each color combination. Resulting in a
12
maximum of 2 =4096 colors.
In gray shade mode, the S1D13504 treats the Green LUT as a 16 position, 4 bit wide monochrome
LUT. Depending on the selected pixel size, this LUT will provide from 1 to 4 banks.
1 bpp Gray Shade
The S1D13504 has no true Black-and-White mode. 1 bpp Gray consists of a single bank of two
entries. For Black-and-White mode, the LUT entry must be programmed as such:
.
Table 3-13: Recommended LUT Values for 1 bpp Gray Shades
Color
black
dark blue
dark green
dark cyan
dark red
dark magenta
dark yellow
gray
Look-Up Table
Index
(hex)
00
01
Epson Research and Development
Vancouver Design Center
Pixel Value
(binary)
000 000 00
bright blue
000 000 11
bright green
000 111 00
bright cyan
000 111 11
bright red
111 000 00
bright magenta
111 000 11
bright yellow
111 111 00
111 111 11
Data
(hex)
00
0F
Programming Notes and Examples
Issue Date: 01/02/01
Color
black
white