AK8826VN Datasheet, PDF (86/157 Pages) Asahi Kasei Microsystems – HD/SD Multi Format Video Encoder with 3ch DAC

(3-2) 525p Vertical Sync waveform and Timing
AK8826 supports both of CEA-770.2-A and CEA770.2-C
HD Block Miscellaneous Control Register
Sub Address 0x0A
bit 7
bit 6
bit 5
Reserved
Reserved STD770_2C
bit 4
HDCEA805B
bit 3
CCWSSSUE
STD770_2C -bit
0
1
Standard
CEA 770.2-A
CEA 770.2-C
bit 2
Reserved
Remark
[AK8826VN]
default Value 0x00
bit 1
bit 0
HDAFLT1
HDAFLT0
(3-2-2) CEA 770.2-A (STD770_2C-bit =0)
6H
858
63
795
525
1
2
6H
6H
858
63
795
6
7
8
42
12
13
14
42
43
Fig. 127
Frame period (derived)
Vertical blanking
(31.776usec x 42lines + 0.59usec)
Vertical sync duration
Vertical serration pulse width
Measurement
point
50%
value
16.6833
42 lines + 0.59usec
6
2.33
Recommended
tolerance
0
+/- 0.05
+/- 0.05
(3-2-3) CEA 770.2-C (STD770_2C-bit =1)
units
msec
lines
usec
lines
usec
9H
858
63
795
525
1
2
6H
6H
858
63
795
9
10 11
45
15
16
17
45
46
Frame period (derived)
Vertical blanking
(31.776usec x 42lines + 0.59usec)
Vertical sync duration
Vertical serration pulse width
Measurement
point
50%
Fig. 128
value
16.6833
45 lines + 0.59usec
6
2.33
Recommended
tolerance
0
+/- 0.05
+/- 0.05
units
msec
lines
usec
lines
usec
MS0972-E-01
86
2008/12