AK8826VN Datasheet, PDF (95/157 Pages) Asahi Kasei Microsystems – HD/SD Multi Format Video Encoder with 3ch DAC

(6) 720p Synchronization waveform ( EIA-770.3-C )
ç
(6-1-1) 720p Horizontal Sync waveform (50Hz) (based on SMPTE296MÊ£
50%
V /2
1650T
0H
b
e (260T)
f
f
50%
Sp
f
[AK8826VN]
V /2
50%
Sm
70T
a (40T)
c (40T)
4T
362T
A N C ILLA R Y D ATA or
B LA N K IN G C O D EW O R D S
1280T
4T
1280T
V ID E O D ATA
90%
300m V
BLAN KIN G
300m V
10%
t1
f
t2
BPSRT
BROAD PULSE
BPSTP
Fig. 141
Symbol
a
b
c
e
f
t2 – t1
Sm
Sp
V
BPSRT
BPSTP
parameter
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
Nominal value
0.539 [usec]
5.926 [usec]
0.539 [usec]
3.502 [usec]
0.054 [usec]
-
300 [mV]
300 [mV]
700 [mV]
Reference
clock Interval
40
440
40
260
4
-
-
-
-
1980
1280
260
1540
Tolerance
CLK
+/- 3
+/- 3
-0 / +6
+/- 1.5
Tolerance
+/- 0.040 [usec]
+/- 0.040 [usec]
+0.080 [usec]
+/- 0.020 [usec]
0 ~ +6
-6 ~ 0
+0.080 [usec]
- 0.080 [usec]
MS0972-E-01
95
2008/12