ADV8005 Hardware Reference Manual
UG-707
The values for the luma (Y) and the color difference (Cr and Cb) signals used to obtain white, black, and saturated primary and complementary
colors conform to the ITU-R BT.601-4 standard.
shows sample color values that can be programmed into the color registers when the output standard selection is set to EIA
770.2/EIA770.3 (Reg 0x30, Bits[1:0] = 00).
hdtv_flat_tp
, Encoder Map,
Address 0xE431[3]
This bit is used to select the pattern used by the internal test pattern generator.
Function
hdtv_flat_tp
Description
0 (default)
Hatch
1
Field/frame
y_colour[7:0]
, Encoder Map,
Address 0xE436[7:0]
This register is used to control the ED/HD test pattern, Y level.
cr_colour[7:0]
, Encoder Map,
Address 0xE437[7:0]
This register is used to control the ED/HD test pattern, Cr level.
cb_colour[7:0]
, Encoder Map,
Address 0xE438[7:0]
This register is used to control the ED/HD test pattern, Cb level.
Table 74: Sample Color Values for EIA 770.2/EIA770.3 ED/HD Output Standard Selection
Sample Color
Y Value
Cr Value
Cb Value
White
235
(0xEB)
128
(0x80)
128
(0x80)
Black
16
(0x10)
128
(0x80)
128
(0x80)
Red
81
(0x51)
240
(0xF0)
90
(0x5A)
Green
145
(0x91)
34
(0x22)
54
(0x36)
Blue
41
(0x29)
110
(0x6E)
240
(0xF0)
Yellow
210
(0xD2)
146
(0x92)
16
(0x10)
Cyan
170
(0xAA)
16
(0x10)
166
(0xA6)
Magenta
106
(0x6A)
222
(0xDE)
202
(0xCA)
7.4.9.
Color Space Conversion Matrix
The input to the encoder block on the
should always be in a YCbCr color space. If an RGB color space is present at the input pins, the
can be used to convert it to YCbCr. It is possible, however, to convert from YCbCr to an RGB stream in
the encoder. The encoder output color space can be programmed using
yuv_out
, Encoder Map,
Address 0xE402[5]
This bit is used to select the output colour space for the encoder.
Function
yuv_out
Description
0
RGB component outputs.
1 (default)
YPrPb component outputs.
7.4.10.
ED/HD Manual CSC Matrix Adjust Feature
The ED/HD manual CSC matrix adjust feature provides custom coefficient manipulation for the YPbPr to RGB CSC and is used in ED and HD
modes only.
can be used to enable this feature.
Rev. A | Page 255 of 317
