Data Preprocessor And Color Space Conversion And Color Controls; Color Space Conversion Matrix - Analog Devices Advantiv ADV7619 Hardware User's Manual

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DATA PREPROCESSOR AND COLOR SPACE CONVERSION AND COLOR CONTROLS

COLOR SPACE CONVERSION MATRIX

The ADV7619 provides any-to-any color space support. It supports formats such as RGB, YUV, YCbCr and many other color spaces. Data
Preprocessor and Component Processor are designed to run at speeds of up to 170 MHz. Therefore HDMI video with pixel clock
frequencies above 170 MHz must be routed directly to Video Output Formatter bypassing Data Preprocessor (DPP) and Component
Preprocessor (CP). For more information about bypassing DPP and CP please refer to Pass Through Mode section. The ADV7619
features a 3×3 CSC in the CP block (CP CSC), as shown in Figure 32. The CP CSC also provides color controls for brightness, contrast,
saturation and hue adjustments. The DPP block features an automatic CSC. The ADV7619 automatically configures the DPP CSC
depending on the input and output formats and the use of the color control feature.
FIRST STAGE
DECIMATION
FILTER
The configuration of the color space conversion using the CP CSC block and a description of the adjustable register bits are provided in
Figure 33.
CHANNEL A, B, AND C
FROM DPP
CP CSC Selection
MAN_CP_CSC_EN , Addr 44 (CP), Address 0x69[4]
A control to manually enable the CP CSC. By default the CP CSC will be automatically enabled in the case that either a color-space
conversion or video-adjustments (hue, saturation, contrast, brightness) is determined to be required due to other I
MAN_CP_CSC_EN is set to 1, the CP CSC is forced into the enabled state.
Function
MAN_CP_CSC_EN
0 (default)
1
DATA PRE-PROCESSOR
(DPP)
DPP COLOR SPACE
CONVERSION MATRIX
(DPP CSC)
Figure 32. DPP/CP CSC Block Diagram
CSC_COEFF_SEL
0000
1111
CP COLOR SPACE
CONVERSION MATRIX
(CP CSC)
Figure 33. Configuring CP CSC Block
Description
CP CSC will be automatically enabled if required. For example, if either a color-space conversion or video-
adjustments (hue, saturation, contrast, brightness) is determined to be required due to other I
Manual override to force CP-CSC to be enabled.
Rev. A | Page 106 of 204
COMPONENT PROCESSOR
SECOND STAGE
DECIMATION
FILTER
CONVERSION MATRIX
MANUAL CSC MODE
CSC_SCALE
A1-A4[12:0]
B1-B4[12:0]
C1-C4[12:0]
AUTOMATIC CSC MODE
RGB_OUT
INP_COLOR_SPACE
ALT_GAMMA
CP COLOR CONTROL
1
CP_BRIGHTNESS
CP_SATURATION
CP_CONTRAST
CP_HUE
0
VID_ADJ_EN
Hardware User Guide
(CP)
CP COLOR SPACE
(CP CSC)
CHANNEL A, B, AND C
TO CP CORE
2
C settings. If
2
C settings.