ak8825 AKM Semiconductor, Inc., ak8825 Datasheet - Page 92

• Manufacturer Part Number: ak8825
• Description: Hd/sd Multi Format Video Encoder With 3ch Dac
• Manufacturer: AKM Semiconductor, Inc.

(4-2) 625p Vertical Sync waveform and timing
* For H and a, see Table 1 (ITU-R BT.1358)
Rev-E-00
Symbol
D
C
V
A
B
p
s
-
r
621
α
α
Characteristics
Nominal frame period (ms)
Vertical blanking interval
Build-up time (10 to 90%) of the edges of vertical blanking pulse (us)
Interval between front edges of vertical blanking interval and front edges of first vertical
synchronizing pulse
Interval between back edges of last vertical synchronizing pulse and back edge of vertical
blanking interval
Duration of sequence of vertical synchronizing pulses
Duration of vertical synchronizing pulse (us)
Interval between vertical synchronizing pulse (us)
Build-up time (10 to 90%) og the vertical synchronizing pulses (us)
A
p
β
1
Line number
β
r
Fig. 131
Fig. 132
D
92
χ
6
B
s
χ
44
δ
C
δ
625/50/1:1
0.15±0.05
29.65±0.1
2.35±0.1
0.1±0.05
49H+α*
39H*
5H*
5H*
20
2008/03
[AK8825]