ak8823 AKM Semiconductor, Inc., ak8823 Datasheet - Page 38

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

ASAHI KASEI
( 2 ) EAV / SAV Codes and Line Synchronization ( HD )
The AK8823 makes Vertical Synchronization ( Line Synchronization ) with either F-bit or V-bit of EAV.
In the Interlaced input signal case, it is synchronized with F-bit.
In the Progressive input signal case, it is synchronized with V-bit.
. 525p ( 480p ) and 750p ( 720p ) cases
. When in the Interlaced input signal cases (525i (480i), 625i(576i) and 1080i modes),
Line Synchronization with input signal is made with F-bit of EAV.
MS0549-E-02
V-bit
Start (V=1)
End (V=0)
F-bit of EAV / SAV and Line relation is as follows.
V-bit of EAV / SAV and Line relation is as follows.
. 525i ( 480i ) and 1080i cases
(Caution*) EAV decode at 625P(576P) operation mode.
AK8823 considers the transition of V-bit in EAV “0”->”1” as line 1.
(Also refer to page 40 for 625p EAV synchronization.)
Field 1
Field 2
Field
F-bit
Line-No.
Line-No.
0
1
Digital
Digital
F-bit
F-bit
Line266 - Line525
Line4 - Line265
Line1 - Line3
Start (V=1)
Start (V=1)
525i(480i)
End (V=0)
End (V=0)
1
263
V-bit
Line43 - Line525
Line1 - Line42
525P (480P)
264
2
Line Synchronization with EAV in 525i ( 480i ) Input Mode
Line313 - Line625
Line264 - Line282
Line283 - Line525
Line20 - Line263
Line1 - Line312
265
Line1 - Line19
3
625i(576i)
525i (480i)
266
4
Line45 - Line625
*Line1 - Line44
625P (576P)
38
267
5
All lines F = 0
Line336 - Line623
Line311 - Line335
Line624 - Line22
Line23 - Line310
525P/625P
625i (576i)
268
6
269
Line746 - Line750 - Line25
7
Line564 - Line1125
Line1 - Line563
Line26 - Line745
750P (720P)
1080i
270
8
Line1124 - Line1125 - Line20
Line584 - Line1123
Line561 - Line583
Line21 - Line560
1080i(60/50Hz)
271
9
All lines F = 0
272
720P
2006/10
[AK8823]