Selecting Automatic Or Manual Cp Csc Conversion Mode; Automatic Color Space Conversion Matrix - Analog Devices ADV7850 Hardware Manual

Function
man_cp_csc_en
0 
1

Selecting Automatic or Manual CP CSC Conversion Mode

8.3.2
The ADV7850 CP CSC provides two modes for the CSC configuration: automatic CSC mode and manual CSC mode.
In automatic CSC mode, the user is required to program the input color space and the output color space for the correct operation of the
CSC matrix. Manual CSC mode allows the user to program all the color space conversion by manually programming CSC coefficients.
csc_coeff_sel[3:0], Addr 44 (CP), Address 0x68[7:4]
This control is used to select the mode in which the CP CSC operates.
Function
csc_coeff_sel[3:0]
0000
1111 
xxxx
The CSC configuration mode is automated in the ADV7850. Automatic or manual CSC mode can be selected by setting the
csc_coeff_sel[3:0] bits. When csc_coeff_sel[3:0] is set to 0b1111, the CSC mode is automatically selected, based on the input color space
and output color space required and set through the following registers:
• inp_color_space[3:0]
• rgb_out
• alt_gamma

Automatic Color Space Conversion Matrix

8.3.3
In automatic mode, the CSC matrix, AGC target gain values, and offset values can be configured automatically via the following set of
registers:
•
inp_color_space[3:0]
• rgb_out
•
alt_gamma
• op_656_range_sel
inp_color_space[3:0], Addr A0 (VFE), Address 0x02[7:4]
This control is used to set the color space of the input video. It is to be used in conjunction with alt_gamma and rgb_out to configure
the color space converter. A value of 4'b1111 selects automatic setting of the input color space base on the primary mode and video
standard settings. Settings 1000 to 1110 are undefined.
Function
inp_color_space[3:0]
0000
0001
0010
0011
0100
0101
0110
Rev. A May 2012
Description
CP CSC automatically enabled if required
Manual override to force CP CSC to be enabled
Description
CP CSC configuration in manual mode
CP CSC configured in automatic mode
Reserved
Description
Force RGB (range 16 to 235) input
Force RGB (range 0 to 255) input
Force YCrCb input (601 color space) (range 16 to 235)
Force YCrCb input (709 color space) (range 16 to 235)
Force XVYCC 601
Force XVYCC 709
231
ADV7850