Sd Gamma Correction - Analog Devices ADV8005 Hardware Reference Manual

ADV8005 Hardware Reference Manual
To select between both the A and B curves for the ED/HD gamma correction, the
gamma_curve_b_hdtv, Encoder Map, Address 0xE435[4]
This bit is used to select the gamma correction curves for ED/HD video data.
Function
gamma_curve_b_hdtv
0 (default)
1
7.4.17.2.

SD Gamma Correction

To enable the gamma correction curves for SD standards,
gamma_en, Encoder Map, Address 0xE488[6]
This bit is used to enable the gamma correction curves for SD video data.
Function
gamma_en
1
0 (default)
The SD gamma correction curves are provided in
To select between both the A and B curves,
gamma_curve_b, Encoder Map, Address 0xE488[7]
This bit is used to select the gamma correction curves for SD video data.
Function
gamma_curve_b
0 (default)
1
Description
Gamma Correction Curve A
Gamma Correction Curve B
gamma_en
Description
Enabled
Disabled
Table 80.
Table 80: SD Gamma Curve A
Curve Type Point
SD Gamma Curve A (A0 – Point 24)
SD Gamma Curve A (A1 – Point 32)
SD Gamma Curve A (A2 – Point 48)
SD Gamma Curve A (A3 – Point 64)
SD Gamma Curve A (A4 – Point 80)
SD Gamma Curve A (A5 – Point 96)
SD Gamma Curve A (A6 – Point 128)
SD Gamma Curve A (A7 – Point 160)
SD Gamma Curve A (A8 – Point 192)
SD Gamma Curve A (A9 – Point 224)
SD Gamma Curve B (B0 – Point 24)
SD Gamma Curve B (B1 – Point 32)
SD Gamma Curve B (B2 – Point 48)
SD Gamma Curve B (B3 – Point 64)
SD Gamma Curve B (B4 – Point 80)
SD Gamma Curve B (B5 – Point 96)
SD Gamma Curve B (B6 – Point 128)
SD Gamma Curve B (B7 – Point 160)
SD Gamma Curve B (B8 – Point 192)
SD Gamma Curve B (B9 – Point 224)
gamma_curve_b must be programmed.
Description
Gamma Correction Curve A
Gamma Correction Curve B
Rev. A | Page 265 of 317
gamma_curve_b_hdtv
must be programmed.
Register Address
0xA6
0xA7
0xA8
0xA9
0xAA
0xAB
0xAC
0xAD
0xAE
0xAF
0xB0
0xB1
0xB2
0xB3
0xB4
0xB5
0xB6
0xB7
0xB8
0xB9
UG-707
must be programmed.