AK8817_06 Datasheet, PDF (23/44 Pages) Asahi Kasei Microsystems – NTSC/PAL Digital Video Encoder

ASAHI KASEI
( a-3-2 ) PAL ( Frame ) 625 Line
The First Field ( ODD )
576 active lines
[AK8817]
625
1
2
3
4
5
HDI
313lines
22
23
288lines
24
310
311
312
313
314
VDI
* ) VDI negative-going should be fed during the time from 3 clocks prior to negative-going of HDI at L1 till 3 clocks prior to positive-going of HDI.
VDI positive-going can occur at arbitrary location, but as a rough idea, keep VDI low for 2.5, or 2 or 3 line- duration time.
Data fed at Line 23 is not output on Video output
The Second Field (EVEN)
313lines
288lines
313
314
315
316
317
318
335
336
337
623
624
625
1
2
HDI
VDI
High
*) VDI negative-going is not required for the Second Field. It is required for the First Field only ( VDI fed during the Second Field is ignored ).
Data fed at Line 623 is not output.
MS0413-E-03
23
2006 / 05