AK8851 Datasheet, PDF (46/80 Pages) Asahi Kasei Microsystems – NTSC/PAL/SECAM Digital Video Decoder

ASAHI KASEI
(4) Output of Various Timing Signals
The AK8851 generates following timing signal outputs.
[AK8851]
Pin Name
HSYNC
VSYNC
CSYNC
FIELD
DVALID
525-Line System
625-Line System
15.734kHz Interval. Low interval is about 15.625kHz Interval Low Interval is about
4.7[usec]
4.7[usec]
Low output between
Low output between
Line4 ~ Line6 / Line266.5~Line269.5
Line1~ Line3.5/Line313.5~ Line315
Composite Sync output
ODD-Field: Low
EVEN-Field: High
Low while Active video. (Index timing signal)
* Output Timing at 525-Line system input
CSYNC
HSYNC
VSYNC
F IE LD
523
524
525
1
EVEN
2
3
4
5
6
7
8
9
10
11
ODD
CSYNC
HSYNC
VSYNC
F IE LD
261 262
263
264
265 266 267
268
269
270
271
272 273
274
ODD
EVEN
CSYNC
HSYNC
VSYNC
F IE LD
523
524
525
1
EVEN
2
3
4
5
6
7
8
9
10
11
ODD
CSYNC
HSYNC
VSYNC
F IE LD
261 262
263
264
265 266 267
268
269
270
271
272 273
274
ODD
EVEN
* Output Timing at 625-Line system input
CSYNC
620
621
622
623
624
625
1
2
3
4
5
6
7
8
HSYNC
VSYNC
FIE LD
EVEN
ODD
CSYNC
HSYNC
VSYNC
FIE LD
308 309
310
3 11
312 313 314
315
316
317
318
319
320
321
ODD
EVEN
CSYNC
HSYNC
VSYNC
FIE LD
620
621
622 623
EVEN
624
625
1
2
3
ODD
4
5
6
7
8
CSYNC
HSYNC
VSYNC
FIE LD
308 309
310
3 11
ODD
312 313 314
315
EVEN
316
317
318
319
320
321
MS0244-E-03
46
Confidential
2005 / 07