AK8813 Datasheet, PDF (28/51 Pages) Asahi Kasei Microsystems – NTSC/PAL Digital Video Encoder

ASAHIKASEI
[AK8813/14]
♦ Internal Color Bars Generator
AK8813/14 generates the Common Color Bar signal for NTSC and PAL internally. The generated Color
Bar is “100% Amplitude, 100% Saturation”. When AK8813/14 is set to Black Burst output mode, AK8813/14
does not output Color bar even Color bar output register is set.
Luminance
100%White
Chrominance
Synctip Level
Blanking Level
Fig. 14 Luminance and Chrominance waveform
The following values are code for ITU-R. BT601
WHITE YELLOW CYAN GREEN
Cb
128
16
166
54
Y
235
210
170
145
Cr
128
146
16
34
MAGENTA
202
106
222
RED
90
81
240
BLUE
240
41
110
BLACK
128
16
128
♦ Internal Black Burst Generator
AK8813/14 generates Black burst signal for NTSC and PAL internally. When AK8813/14 is set to Black
burst output mode, AK8813/14 works same operation as that the input Y/Cb/Cr data is 16/128/128. In this
mode, AK8813/14 does not output Color bar even Color bar output register is set.
Rev.00
- 29 -
2004/Oct