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| 型號： | CL-PS7111 |
| 廠商： | Cirrus Logic, Inc. |
| 英文描述： | Low-Power System-on-a-Chip |
| 中文描述： | 低功耗系統(tǒng)級晶片 |
| 文件頁數(shù)： | 69/105頁 |
| 文件大?。?/td> | 1207K |
| 代理商： | CL-PS7111 |
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PRELIMINARY DATA BOOK v2.0
September 1997
68
REGISTER DESCRIPTIONS
CL-PS7111
Low-Power System-on-a-Chip
5.24
Least-Significant Word-LCD Palette Register — PALLSW
The least- and most-significant Word-LCD Palette registers make up a 64-bit read/write register, which
maps the logical pixel value to a physical grayscale level. The 64-bit register is made up of 16
×
4-bit nib-
bles, each nibble defines the grayscale level associated with the appropriate pixel value. If the LCD con-
troller is operating in two bits per pixel, only the lower four nibbles are valid (D[15:0] in the least-significant
word). Similarly, one bit per pixel means only the lower two nibbles are valid (D[7:0] in the least-significant
word). The pixel-to-grayscale level assignments are shown in the respective bit description table.
5.25
Most-Significant Word-LCD Palette Register — PALMSW
Refer to the description of PALLSW.
The actual physical color and pixel duty ratio for the grayscale values are shown in
Table 5-5
. Note that
colors 8–15 are the inverse of colors 7–0 respectively; this means that colors 7 and 8 are identical. The
steps in the grayscale are nonlinear. but have been chosen to give a close approximation to perceived
linear grayscales. The is due to the eye being more sensitive to changes in gray level close to 50% gray.
Table 5-5.
Grayscale Value-to-Color
Mapping
31:28
27:24
23:20
19:16
15:12
11:8
7:4
3:0
Grayscale
value for pixel
value 7
Grayscale
value for pixel
value 6
Grayscale
value for pixel
value 5
Grayscale
value for pixel
value 4
Grayscale
value for pixel
value 3
Grayscale
value for pixel
value 2
Grayscale
value for pixel
value 1
Grayscale
value for pixel
value 0
31:28
27:24
23:20
19:16
15:12
11:8
7:4
3:0
Grayscale
value for pixel
value 15
Grayscale
value for pixel
value 14
Grayscale
value for pixel
value 13
Grayscale
value for pixel
value 12
Grayscale
value for pixel
value 11
Grayscale
value for pixel
value 10
Grayscale
value for pixel
value 9
Grayscale
value for pixel
value 8
Grayscale
Value
Duty
Cycle
% Pixels
Lit
% Step
Change
0
0
0%
11.1%
1
1/9
11.1%
8.9%
2
1/5
20.0%
6.7%
3
4/15
26.7%
6.6%
4
3/9
33.3%
6.7%
5
2/5
40.0%
5.4%
6
4/9
44.4%
5.6%
7
1/2
50.0%
0.0%
8
1/2
50.0%
5.6%
9
5/9
55.6%
5.4%
10
3/5
60.0%
6.7%
11
6/9
66.7%
6.6%
12
11/15
73.3%
6.7%
13
4/5
80.0%
8.9%
14
8/9
88.9%
11.1%
15
1
100%
–
Table 5-5.
Grayscale Value-to-Color
Mapping
(cont.)
Grayscale
Value
Duty
Cycle
% Pixels
Lit
% Step
Change
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| CL-PS7111-VC-A | Low-Power System-on-a-Chip |
| CL-PS7500FE | System-on-a Chip for Internet Appliance |
| CL-SH8665 | Integrated ATA Drive microcontroller(集成ATA驅(qū)動微控制器) |
| CL1431 | Precision Adjustable Shunt Reference |
| CL1431D | Precision Adjustable Shunt Reference |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| CL-PS7111(208LQFP) | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Logic IC |
| CL-PS7111(256PBGA) | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Logic IC |
| CL-PS7111-VC-A | 制造商:CIRRUS 制造商全稱:Cirrus Logic 功能描述:Low-Power System-on-a-Chip |
| CL-PS7500FE | 制造商:CIRRUS 制造商全稱:Cirrus Logic 功能描述:System-on-a Chip for Internet Appliance |
| CLPT-12SP-06 | 制造商:Tri-Star Electronics International 功能描述:CONNECTOR - Bulk |
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