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參數(shù)資料
| 型號(hào)： | ADV7343BSTZ |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 69/108頁 |
| 文件大小： | 0K |
| 描述： | IC ENCODER VIDEO W/DAC 64-LQFP |
| 產(chǎn)品變化通告： | ADV734x, ADV739x Feature Improvement |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 類型： | 視頻編碼器 |
| 應(yīng)用： | DVD，Blu-Ray |
| 電壓 - 電源，模擬： | 3.3V |
| 電壓 - 電源，數(shù)字： | 1.8V |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 64-LQFP |
| 供應(yīng)商設(shè)備封裝： | 64-LQFP（10x10） |
| 包裝： | 托盤 |
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Data Sheet
ADV7342/ADV7343
Rev. | Page 63 of 108
ED/HD SHARPNESS FILTER AND ADAPTIVE FILTER
CONTROLS
Subaddress 0x40; Subaddress 0x58 to Subaddress 0x5D
There are three filter modes available on the ADV7342/ADV7343:
a sharpness filter mode and two adaptive filter modes.
ED/HD Sharpness Filter Mode
To enhance or attenuate the Y signal in the frequency ranges
shown in Figure 69, the ED/HD sharpness filter must be
enabled (Subaddress 0x31, Bit 7) and the ED/HD adaptive filter
must be disabled (Subaddress 0x35, Bit 7).
To select one of the 256 individual responses, the corresponding
gain values, which range from –8 to +7 for each filter, must be
programmed into the ED/HD sharpness filter gain register at
Subaddress 0x40.
ED/HD Adaptive Filter Mode
The ED/HD adaptive filter (Threshold A, Threshold B, and
Threshold C) registers, the ED/HD adaptive filter (Gain 1, Gain
2, and Gain 3) registers, and the ED/HD sharpness filter gain
register are used in adaptive filter mode. To activate the
adaptive filter control, the ED/HD sharpness filter and the
ED/HD adaptive filter must be enabled (Subaddress 0x31, Bit 7,
and Subaddress 0x35, Bit 7, respectively).
The derivative of the incoming signal is compared to the three
programmable threshold values: ED/HD adaptive filter
(Threshold A, Threshold B, and Threshold C) registers
(Subaddress 0x5B, Subaddress 0x5C, and Subaddress 0x5D,
respectively). The recommended threshold range is 16 to 235,
although any value in the range of 0 to 255 can be used.
The edges can then be attenuated with the settings in the
ED/HD adaptive filter (Gain 1, Gain 2, and Gain 3) registers
(Subaddress 0x58, Subaddress 0x59, and Subaddress 0x5A,
respectively), and the ED/HD sharpness filter gain register
(Subaddress 0x40).
There are two adaptive filter modes available. The mode
is selected using the ED/HD adaptive filter mode control
(Subaddress 0x35, Bit 6) as follows:
Mode A is used when the ED/HD adaptive filter mode
control is set to 0. In this case, Filter B (LPF) is used in the
adaptive filter block. In addition, only the programmed
values for Gain B in the ED/HD sharpness filter gain
register and ED/HD adaptive filter (Gain 1, Gain 2, and
Gain 3) registers are applied when needed. The Gain A
values are fixed and cannot be changed.
Mode B is used when ED/HD adaptive filter mode control
is set to 1. In this mode, a cascade of Filter A and Filter B is
used. Both settings for Gain A and Gain B in the ED/HD
sharpness filter gain register and ED/HD adaptive filter
(Gain 1, Gain 2, and Gain 3) registers become active when
needed.
FREQUENCY (MHz)
FILTER A RESPONSE (Gain Ka)
M
AG
NI
T
UDE
0.5
0.6
0.7
0.8
0.9
1.0
1.1
1.2
1.3
1.4
1.5
FREQUENCY (MHz)
FILTER B RESPONSE (Gain Kb)
M
AG
NI
T
UDE
0.5
0.6
0.7
0.8
0.9
1.0
1.1
1.2
1.3
1.4
1.5
FREQUENCY (MHz)
M
AG
NI
T
UDE
RE
S
P
O
NS
E
(
L
in
ear
S
cal
e)
1.0
1.1
1.2
1.3
1.4
1.5
1.6
10
12
INPUT
SIGNAL
STEP
FREQUENCY RESPONSE IN SHARPNESS
FILTER MODE WITH Ka = 3 AND Kb = 7
SHARPNESS AND ADAPTIVE FILTER CONTROL BLOCK
0
2
4
6
8
06399-
073
Figure 69. ED/HD Sharpness and Adaptive Filter Control Block
D
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參數(shù)描述 |
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| ADV7343WBSTZ | 功能描述:IC ENCODER VID 12BIT DAC 64LQFP 制造商:analog devices inc. 系列:- 包裝:托盤 零件狀態(tài):在售 類型:視頻編碼器 應(yīng)用:DVD，Blu-Ray 電壓 - 電源，模擬:2.6 V ~ 3.46 V 電壓 - 電源，數(shù)字:1.71 V ~ 1.89 V 安裝類型:表面貼裝 封裝/外殼:64-LQFP 供應(yīng)商器件封裝:64-LQFP（10x10） 標(biāo)準(zhǔn)包裝:1 |
| ADV7343WBSTZ-RL | 功能描述:Video Encoder IC DVD, Blu-Ray 64-LQFP (10x10) 制造商:analog devices inc. 系列:- 包裝:帶卷（TR） 零件狀態(tài):有效 類型:視頻編碼器 應(yīng)用:DVD，Blu-Ray 電壓 - 電源，模擬:2.6 V ~ 3.46 V 電壓 - 電源，數(shù)字:1.71 V ~ 1.89 V 安裝類型:表面貼裝 封裝/外殼:64-LQFP 供應(yīng)商器件封裝:64-LQFP（10x10） 標(biāo)準(zhǔn)包裝:1,500 |
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| ADV7344BSTZ | 制造商:Analog Devices 功能描述: |
| ADV73505501 | 制造商:LG Corporation 功能描述:Frame Assembly |
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