Color Controls - Analog Devices Advantiv ADV7619 Hardware User's Manual

Hardware User Guide
CSC in Pass-Through Mode
It is possible to configure the CP CSC in a pass-through mode. In this mode, the CP CSC is used but does not alter the data it processes.
The CP CSC pass-through mode is obtained using the following settings:
1. Set MAN_CP_CSC_EN to 1'b1.
2. Set CSC_COEFF_SEL[3:0] to 4'b0000.
3. Leave the following registers from the CP map at the default:
CSC_SCALE = 1 (default value)
A4 = A3 = A2 = 0x000 (default value)
B4 = B3 = B1 = 0x000 (default value)
C4 = C2 = C1 = 0x000 (default value)
A1 = B2 = C3 = 0x800 (default value)
Note: The DPP CSC is always in pass-through mode unless the ADV7619 is processing an RGB input, outputting this input in the RGB
color space and VID_ADJ_EN is enabled.

COLOR CONTROLS

The ADV7619 has a color control feature that can adjust the brightness, contrast, saturation, and hue properties.
VID_ADJ_EN , Addr 44 (CP), Address 0x3E[7]
Video adjustment enable. This control selects whether or not the color controls feature is enabled. The color controls feature is configured
via the parameters CP_CONTRAST[7:0], CP_SATURATION[7:0], CP_BRIGHTNESS[7:0] and CP_HUE[7:0]. The CP CSC must also be
enabled for the color controls to be effective.
Function
VID_ADJ_EN
0 (default)
1
CP_CONTRAST[7:0] , Addr 44 (CP), Address 0x3A[7:0]
A control to set the contrast. This field is a unsigned value represented in a 1.7 binary format. The MSB represents the integer part of the
contrast value, which is either 0 or 1. The seven LSBs represent the fractional part of the contrast value. The fractional part has the range
[0 to 0.99]. This control is functional if VID_ADJ_EN is set to 1.
Function
CP_CONTRAST[7:0]
00000000
10000000 (default)
11111111
CP_SATURATION[7:0] , Addr 44 (CP), Address 0x3B[7:0]
A control to set the saturation. This field is an unsigned value represented in a 1.7 binary format. The MSB represents the integer part of
the contrast value, which is either 0 or 1. The seven LSBs represent the fractional part of the saturation value. The fractional part has a [0
to 0.99] range. This control is functional if VID_ADJ_EN is set to 1.
Function
CP_SATURATION[7:0]
00000000
10000000 (default)
11111111
Description
Disable color controls
Enable color controls
Description
Contrast set to minimum
Default
Contrast set to maximum
Description
Saturation set to minimum
Default
Saturation set to maximum
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