ak8825 AKM Semiconductor, Inc., ak8825 Datasheet - Page 90

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

(3-2) 525p Vertical Sync waveform and Timing
AK8825 supports both of CEA-770.2-A and CEA770.2-C
HD Block Miscellaneous Control Register
Sub Address 0x0A
(3-2-2) CEA 770.2-A (STD770_2C-bit =0)
(3-2-3) CEA 770.2-C (STD770_2C-bit =1)
Rev-E-00
Frame period (derived)
Vertical blanking
(31.776usec x 42lines + 0.59usec)
Vertical sync duration
Vertical serration pulse width
Frame period (derived)
Vertical blanking
(31.776usec x 42lines + 0.59usec)
Vertical sync duration
Vertical serration pulse width
STD770_2C -bit
525
525
Reserved
bit 7
0
1
1
1
63
63
Reserved
858
858
795
795
2
2
bit 6
6H
9H
CEA 770.2-A
CEA 770.2-C
Standard
STD770_2C
bit 5
6
9
Measurement
Measurement
point
point
50%
50%
10
7
HDCEA805B
bit 4
11
8
42 lines + 0.59usec
45 lines + 0.59usec
Fig. 128
Fig. 129
6H
6H
42
45
90
16.6833
16.6833
63
63
CCWSSSUE
value
value
2.33
2.33
6
6
bit 3
795
795
858
858
12
15
Reserved
13
16
Remark
Recommended
Recommended
bit 2
tolerance
tolerance
+/- 0.05
+/- 0.05
+/- 0.05
+/- 0.05
0
0
14
17
6H
6H
HDAFLT1
bit 1
units
msec
lines
usec
lines
usec
msec
units
lines
usec
lines
usec
default Value 0x00
42
45
HDAFLT0
bit 0
2008/03
[AK8825]
43
46