ak8823 AKM Semiconductor, Inc., ak8823 Datasheet - Page 52

• Manufacturer Part Number: ak8823
• Description: Hdtv & Ntsc/pal Multi-format Encoder Sdtv/hdtv X2 Oversampling 5ch Dacs
• Manufacturer: AKM Semiconductor, Inc.

ASAHI KASEI
16-6. On-chip Color Bar ( SD )
The AK8823 can output Color Bar Signal. Color Bar Signal to be generated has 100 % Amplitude and 100% Saturation Levels.
Color Bar Signal is output by setting CBG-bit of [ Video Process 1 Register ] to “ 1 “.
In this case, Set-up process is performed when Set-up bit is “ ON “ and no set-up process is done when Set-up bit is “ OFF “.
When to output Color Bar Signal, required timing is automatically generated internally.
Namely, it is no need to input SYNC timing from outside of the chip.
The AK8823 outputs Black Level when BBG-bit is set, and no Color Bar output is made.
note ) transition of each color is in accordance with ITU-R Rec.601.
16-7. Black Burst Signal Generator Function ( SD )
The AK8823 can output Black Burst signal ( Black Level Output ).
When BBG-bit of [ Video Process 1 Register ] is set to “ 1 “, same operation is processed as in the case when the fixed-16
Luminance signal and the fixed-128 Cb / Cr signal outputs are input.
In this case, Set-up process is done when Set-up bit is “ ON “, and no set-up process is done when it is “ OFF “. If CBG-bit is set,
it is ignored.
MS0549-E-02
Cb
Cr
Y
Chrominance
WHITE
Luminance
128
235
128
YELLOW
210
146
16
CYAN
166
170
16
GREEN
145
54
34
Synctip Level
52
MAGENT
codes are expressed in ITU-R BT. 601 Format
202
106
222
A
RED
240
90
81
100%White
BLUE
240
110
41
Blanking Level
BLACK
128
128
16
2006/10
[AK8823]