
Epson Research and Development
Page 109
Vancouver Design Center
Hardware Functional Specification
S1D13706
Issue Date: 01/11/13
X31B-A-001-08
8.3.5 Display Mode Registers
bit 7
Display Blank
When this bit = 0, the LCD display pipeline is enabled.
When this bit = 1, the LCD display pipeline is disabled and all LCD data outputs are
forced to zero (i.e., the screen is blanked).
bit 6
Dithering Disable
Dithering allows 64 intensity levels for each color component (RGB). In monochrome
modes where only the Green color component of the Look-Up-Table is used, 64 shades of
gray are available for each position used in the LUT. In color modes, 64 shades of color
are available for each color component resulting in 256K possible color combinations.
When this bit = 0, dithering is enabled for passive LCD panels.
When this bit = 1, dithering is disabled for passive LCD panels.
Note
This bit does not refer to the number of simultaneously displayed colors but rather the
maximum available colors (refer to Table 8-9: “LCD Bit-per-pixel Selection,” on page
111 for the maximum number of simultaneously displayed colors).
Display Mode Register
REG[70h]
Read/Write
Display Blank
Dithering
Disable
Hardware
Video Invert
Enable
Software
Video Invert
n/a
Bit-per-pixel Select Bits 2-0
7
6
5
4
3
2
1
0