參數(shù)資料
型號: SSD1905QT2
廠商: Electronic Theatre Controls, Inc.
英文描述: LCD Graphics Controller CMOS
中文描述: LCD圖形控制器的CMOS
文件頁數(shù): 40/153頁
文件大小: 863K
代理商: SSD1905QT2
SSD1905
Rev 1.3
10/2002
SOLOMON
31
Dynamic Dithering Control Register
7
6
Dynamic
Dithering
Enable
RW
NA
0
0
REG[50h]
0
1
Bit
5
0
4
0
3
0
2
0
1
0
0
Type
Reset
state
Bit 7
NA
0
NA
0
NA
0
NA
0
NA
0
RO
1
Dynamic Dithering Enable
This bit will enable the dynamic dithering, the dithering mask will change after each 16
frames.
When this bit = 0, dynamic dithering is disabled.
When this bit = 1, dynamic dithering is enabled.
Note
REG[45h] is effective for both STN panel and dithering enabled (REG[10h] bits 1:0 =
00 and REG[70h] bit 6 = 0).
7.2.5 Display Mode Registers
Display Mode Register
Bit
7
Display
Blank
REG[70h]
0
Bit-per-pixel
Select Bit 0
6
5
4
3
0
2
1
Dithering
Disable
Hardware
Color Invert
Enable
RW
0
Software
Color Invert
Bit-per-pixel
Select Bit 2
Bit-per-pixel
Select Bit 1
Type
Reset
state
Bit 7
RW
0
RW
0
RW
0
NA
0
RW
0
RW
0
RW
0
Display Blank
When this bit = 0, the LCD display output is enabled.
When this bit = 1, the LCD display output is blank and all LCD data outputs are forced
to zero (i.e., the screen is blanked).
Dithering Disable
SSD1905 use a combination of FRC and 4 pixel square formation dithering to achieve
more colors per pixel.
Bit 6
When this bit = 0, dithering is enabled on the passive LCD panel. It allows maximum
64 intensity levels for each color component (RGB).
When this bit = 1, dithering is disabled on the passive LCD panel. It allows maximum
16 intensity levels for each color component (RGB).
Note
This bit does not refer to the number of simultaneously displayed colors but rather the
maximum available colors (refer Table 7-8 : LCD Bit-per-pixel Selection for the
maximum number of displayed colors).
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