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ADV7195
An optional analog reconstruction LPF might be required as an
antialias filter if the ADV7195 is connected to a device that
requires this filtering.
REGISTER SETTINGS
Table XI. Register Settings on Power-Up
The Eval ADV7195/ADV7196/ADV7197 EB evaluation board
uses the ML6426 Microlinear IC, which provides buffering and
Address
Register Setting
low-pass filtering for HDTV applications.
The Eval ADV7195/ADV7196/ADV7197 EB Rev. B and Rev. C
evaluation board uses the AD8057 as a buffer and a sixth order
filter as a LPF.
00hex
01hex
02hex
03hex
04hex
Mode Register 0
Mode Register 1
Mode Register 2
Mode Register 3
Mode Register 4
00hex
00hex
00hex
38hex
00hex
6.8 H
10 H
2.2 H
05hex
Mode Register 5
00hex
06hex
Color Y
A0hex
600R
6.8pF
22pF
18pF
600R
AD8057
07hex
Color Cr
80hex
08hex
09hex
Color Cb
Mode Register 6
80hex
00hex
Figure 59. Example/Cr Output Filter:
PS Mode/2 × Oversampling
10hex
22hex
23hex
24hex
25hex
Filter Gain
Adaptive Filter Gain 1
Adaptive Filter Gain 2
Adaptive Filter Gain 3
Adaptive Filter Threshold A
00hex
AChex
9Ahex
88hex
28 hex
0
– 5
MAGNITUDE (dB)
498
63n
398
54n
26hex
27hex
Adaptive Filter Threshold B
Adaptive Filter Threshold C
3Fhex
64 hex
– 10
298
45n
Table XII. Internal Colorbars (Hatch), Progressive Scan Mode
– 15
– 20
– 25
– 30
GROUP DELAY (SEC)
PHASE (DEG)
198
36n
97.6
27n
0
18n
– 102
9n
Address
00hex
01hex
02hex
03hex
04hex
05hex
Mode Register 0
Mode Register 1
Mode Register 2
Mode Register 3
Mode Register 4
Mode Register 5
Register Setting
00hex
05hex
00hex
38hex
00hex
00hex
– 35
1
2
3
4 5 6 7 8 9 10
FREQUENCY – MHz
2
3
– 202
4 0n
06hex
07hex
08hex
Color Y
Color Cr
Color Cb
xxhex
xxhex
xxhex
Figure 60. Frequency Response|C1 Filter
09hex
Mode Register 6
3Ehex
Circuit in above Figure
Table XIII. Internal Colorbars (Field), HDTV Mode
Address
Register Setting
00hex
01hex
02hex
03hex
04hex
05hex
06hex
07hex
08hex
–32 –
Mode Register 0
Mode Register 1
Mode Register 2
Mode Register 3
Mode Register 4
Mode Register 5
Color Y
Color Cr
Color Cb
00hex
0Dhex
00hex
39hex
00hex
00hex
xxhex
xxhex
xxhex
REV. A
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