AK8825 Datasheet, PDF (44/162 Pages) Asahi Kasei Microsystems – HD/SD Multi Format Video Encoder with 3ch DAC

WSS Waveform
[AK8825]
500mV +/- 5%
0H
a [us]
b [us]
c [us]
d [us]
e [us]
44.5 [us] (defined only 625i)
Fig. 35
Encode
Line
Encode
Clock
c
d
e
625i /50Hz
(ITU-R.Bt.1119)
23
5MHz
(Ts=200ns)
11.0 +/- 0.25
27.4
38.4
625p /50Hz
(IEC 62375)
43
10MHz +/- 1kHz
(Ts = 100ns)
5.5 +/- 0.125
13.7
19.2
Encode Line: 625i/50 23-Line / 625p/50 43-Line
The input video data is not encoded on the WSS encoded line.
Coding: bi-phase modulation coding
Run-in
Start code
29 elements
24 elements
0x1F1C71C7
0x1E3C1F
Group 1
Aspect ratio
24 elements
Bit numbering
0123
LSB
MSB
0 : 000111
1 : 111000
Group 2
Enhanced Services
24 elements
Bit numbering
4567
LSB
MSB
0 : 000111
1 : 111000
Group 3
Subtitles
18 elements
Bit numbering
8 9 10
LSB MSB
0 : 000111
1 : 111000
Group4
Others
18 elements
Bit numbering
11 12 13
LSB MSB
0 : 000111
1 : 111000
Rev-E-00
44
2008/03