ak8825 AKM Semiconductor, Inc., ak8825 Datasheet - Page 44

• Manufacturer Part Number: ak8825
• Description: Hd/sd Multi Format Video Encoder With 3ch Dac
• Manufacturer: AKM Semiconductor, Inc.

WSS Waveform
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
Rev-E-00
625i /50Hz
(ITU-R.Bt.1119)
625p /50Hz
(IEC 62375)
0x1F1C71C7
29 elements
Run-in
0
H
Encode
a [us]
Line
23
43
24 elements
500mV +/- 5%
0x1E3C1F
Start code
b [us]
c [us]
10MHz +/- 1kHz
(Ts = 100ns)
(Ts=200ns)
Encode
5MHz
Clock
LSB
Bit numbering
44.5 [us] (defined only 625i)
0
24 elements
Aspect ratio
0 : 000111
1 : 111000
Group 1
1
11.0 +/- 0.25
5.5 +/- 0.125
2
MSB
c
3
d [us]
e [us]
Fig. 35
44
LSB
Enhanced Services
Bit numbering
4
24 elements
0 : 000111
1 : 111000
Group 2
5
27.4
13.7
d
6
MSB
7
LSB
Bit numbering
38.4
19.2
18 elements
0 : 000111
1 : 111000
8
e
Subtitles
Group 3
9
MSB
10
LSB
Bit numbering
11
18 elements
0 : 000111
1 : 111000
Group4
Others
12
MSB
2008/03
[AK8825]
13