AK8826VN Datasheet, PDF (54/157 Pages) Asahi Kasei Microsystems – HD/SD Multi Format Video Encoder with 3ch DAC

(1-3) Synchronization for Vertical direction (EAV-Sync mode)
The AK8826 makes Vertical Synchronization (Line Synchronization) with either F-bit or V-bit of EAV.
Interlaced signal: using F-bit
Progressive signal: using V-bit
(1-2-1) F-bit
Relation between F-bit and Line-Number
F-bit
525i
625i
0
Line4 - Line265
Line1 - Line312
1
Line266 - Line525
Line1 - Line3
Line313 - Line625
525P/625P
All Lines
F=0
1080i
Line1 - Line563
Line564 - Line1125
[AK8826VN]
720P
All Lines
F=0
(1-2-2) V-bit
Relation between V-bit and Line-Number
- 525i (480i), 625i (576i), 1080i case
Field
V-bit
525i
625i
Field 1
Start (V=1)
End (V=0)
Line1 - Line19
Line20 - Line263
Line624 - Line22
Line23 - Line310
Field 2
Start (V=1)
End (V=0)
Line264 - Line282
Line283 - Line525
Line311 - Line335
Line336 - Line623
Note: AK8826 don’t care V-bit in case of 525i / 625i / 1080i mode
1080i (60/50Hz)
Line1124 - Line1125 - Line20
Line21 - Line560
Line561 - Line583
Line584 - Line1123
- 525P, 625P, 750P case
V-bit
525P
Start (V=1)
Line1 - Line42
End (V=0)
Line43 - Line525
625P
Line621 - Line44
Line45 - Line625
720P
Line746 - Line750 - Line25
Line26 - Line745
MS0972-E-01
54
2008/12