ak8825 AKM Semiconductor, Inc., ak8825 Datasheet - Page 97

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

(6) 720p Synchronization waveform and timing (EIA-770.3-C )
(6-1-1) 720p Horizontal Sync waveform (60Hz)
Rev-E-00
BPSRT
Symbol
BPSTP
t2 – t1
Sm
Sp
V /2
S m
V
a
b
c
e
f
5 0 %
Negative line sync width
End of active video
positive line sync width
Start of active video
Rise/fall time
Symmetry of rising edge
Amplitude of negative pulse
Amplitude of positive pulse
Amplitude of video signal
Total Lines
Active Lines
Broad Pulse Start pos
Broad Pulse stop pos
3 0 0 m V
4 T
7 0 T
parameter
f
b
5 0 %
1 0 %
9 0 %
a (4 0 T )
t1
B L A N K IN G C O D E W O R D S
A N C IL L A R Y D ATA o r
t2
f
Nominal value
0
0.539 [usec]
1.495 [usec]
0.539 [usec]
3.502 [usec]
0.054 [usec]
3 6 2 T
H
300 [mV]
300 [mV]
700 [mV]
f
c (4 0 T )
B P S R T
-
3 0 0 m V
5 0 %
Fig. 139
e (2 6 0 T )
f
97
clock Interval
1 6 5 0 T
Reference
1650
1280
1540
111
260
260
S p
40
40
4
-
-
-
-
B R O A D P U L S E
B P S T P
4 T
B L A N K IN G
Tolerance
-0 / + 6
-12, +0
+/- 1.5
0 ~ +6
-6 ~ 0
+/- 3
+/- 3
CLK
V ID E O D ATA
1 2 8 0 T
1 2 8 0 T
+/- 0.040 [usec]
+0.080 [usec]
+/- 0.040 [usec]
+0.080 [usec]
+/- 0.020 [usec]
+/- 0.002 [usec]
+/- 6mV
+/- 6mV
+0.080 [usec]
- 0.080 [usec]
V /2
Tolerance
2008/03
[AK8825]