ASAHI KASEI
[AK8817/18]
( 1-1 ) EAV / SAV Code and Line Synchronization
The AK8817/18 makes Vertical synchronization ( Line synchronization ) when F-bit in EAV makes transition from
“ 1 “ to “ 0 “.
F-bit of EAV / SAV and Line relation is as follows
F-bit
0
NTSC
PAL
Line1 – Line312
Line4 – Line265
Line266 – Line525
Line1 – Line3
1
Line313 – Line625
For reference, V-bit of EAV / SAV and Line relation is also shown below.
Field
V-bit
NTSC
PAL
Start (V=1)
End (V=0)
Start (V=1)
End (V=0)
Line1 – Line19
Line624 – Line625 – Line22
Line23 – Line310
Field 1
Line20 – Line263
Line264 – Line282
Line283 – Line525
Line311 – Line335
Line336 – Line623
Field 2
1
2
3
4
5
6
7
8
9
Digital
Line-No.
synchronization is made at this timing
F-bit
263
264
265
266
267
268
269
270
271
272
Digital
Line-No.
F-bit
Line Synchronization by EAV at NTSC input case
622
623
624
625
1
2
3
4
5
6
Digital
Line-No.
synchronization is made at this timing
F-bit
310
311
312
313
314
315
316
317
318
319
Digital
Line-No.
F-bit
Line Synchronization by EAV at PAL input
Rev.001E
31
2009 / 12
AKM [ ASAHI KASEI MICROSYSTEMS ]
