AK8826VN Datasheet, PDF (88/157 Pages) Asahi Kasei Microsystems – HD/SD Multi Format Video Encoder with 3ch DAC

(4-2) 625p Vertical Sync waveform and timing
α
A
β
B
D
Fig. 130
[AK8826VN]
χ
δ
C
r
p
s
Fig. 131
Symbol
V
Characteristics
Nominal frame period (ms)
D
Vertical blanking interval
-
Build-up time (10 to 90%) of the edges of vertical blanking pulse (us)
A
Interval between front edges of vertical blanking interval and front edges of first vertical
synchronizing pulse
C
Interval between back edges of last vertical synchronizing pulse and back edge of vertical
blanking interval
B
Duration of sequence of vertical synchronizing pulses
p
Duration of vertical synchronizing pulse (us)
r
Interval between vertical synchronizing pulse (us)
s
Build-up time (10 to 90%) og the vertical synchronizing pulses (us)
* For H and a, see Table 1 (ITU-R BT.1358)
Line number
α
β
χ
δ
621
1
6
44
625/50/1:1
20
49H+α*
0.15±0.05
5H*
39H*
5H*
29.65±0.1
2.35±0.1
0.1±0.05
MS0972-E-01
88
2008/12