UG-707
ADV8005 Hardware Reference Manual
value has a range of -1024 to 1016. Refer to
for more information on how the brightness controls influence the
value has a range 0 to 1.992. Refer to
for more information on how the saturation controls influence the video
signal.
contrast[9:0]
, Encoder Map,
Address 0xE49D[7:0]; Address 0xE49C[1:0]
This signal is used to set the SD Y scale value.
blank_level_y[11:0]
, IO Map,
Address 0x1A24[3:0]; Address 0x1A25[7:0]
This signal is used to adjust the blank level of y input to the vid adjust block.
Function
blank_level_y[11:0]
Description
0x000
y blank level sits at code 0
0x100 (default)
y blank level sits at code 256 decimal
Figure 31: Contrast Processing
brightness[7:0]
, IO Map,
Address 0x1A2A[7:0]
This register is used to adjust the brightness value for Y channel. The register uses s1.6 notation.
Function
brightness[7:0]
Description
0x7F
(+127) * 8
0x00 (default)
(No adjustment) * 8
0xFF
(-1) * 8
Figure 32: Brightness Processing
saturation[7:0]
, IO Map,
Address 0x1A29[7:0]
This register is used to adjust the saturation value for U/V channels. The register uses 1.7 notation.
Function
saturation[7:0]
Description
0x00
Gain of 0
0x80 (default)
Unity Gain
0xFF
Gain of 2
-
*
+
blank_level_y
contrast
blank_level_y
y_out
y_in
brightness * 8
y_out
y_in
+
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