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ADE3700 数据表(PDF) 60 Page - STMicroelectronics

部件名 ADE3700
功能描述  Analog LCD Display Engine for XGA and SXGA Resolutions
PDF  89 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

ADE3700 数据表(HTML) 60 Page - STMicroelectronics

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sRGB
ADE3700
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2.14
sRGB
The sRGB block performs two primary functions:
1. Parametric gamma correction on multiple windows or full screen, used for video enhancement
in a window and digital contrast/brightness control. The window coordinates are set by TCON
registers.
2. 3D color cube warping RGB color space.
2.14.1 Parametric Gamma, Digital Contrast / Brightness on Multiple Windows
The function can be applied to the entire window by programming the window control to full screen.
Each color channel acts independently. Simple digital contrast and brightness can be programmed
using this hardware function. The desired window coordinates are programmed into the TCON.
2.14.2 Color Space Warp
The 8 corners of the color cube are independently controlled in 3D space with smooth interpolation
of intermediate colors. Registers are 2’s complement color delta’s. For example, to make WHITE
more like RED, program SRGB_WHITE_R to a small positive value.
Figure 8: Color Space Warp
Table 20: sRGB Registers (Sheet 1 of 3)
Register Name
Addr
Mode
Bits
Default
Description
SRGB_CTRL
0x0D00
R/W
[7:6]
0x0
Reserved
R/W
[5:4]
0x0
gamma_b control
0x0: disable
0x1: full screen
0x2: windowed
0x3: Reserved
R/W
[3:2]
0x0
gamma_a control
0x0: disable
0x1: full screen
0x2: windowed
0x3: Reserved
R/W
[1:0]
0x0
sRGB control
0x0: disabled
0x1: full screen
0x2: windowed
0x3: Reserved
SRGB_BLACK_R
0x0D01
R/W
[7:0]
0x0
Black Point Red Delta
Color Space Warp
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