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參數(shù)資料
| 型號： | TVP5160PNPG4 |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 顏色信號轉(zhuǎn)換 |
| 英文描述： | COLOR SIGNAL DECODER, PQFP128 |
| 封裝： | PLASTIC, HTQFP-128 |
| 文件頁數(shù)： | 34/119頁 |
| 文件大小： | 1347K |
| 代理商： | TVP5160PNPG4 |
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Functional Description
11
February 2005 Revised April 2006
SLES135A
3.1.1 Video Input Switch Control
The TVP5160 decoder has two analog channels that accept up to 12 video inputs. The user can configure
the internal analog video switches via I2C. The 12 analog video inputs can be used for different input
configurations, some of which are:
12 CVBS video inputs
4 S-Video inputs and 2 CVBS inputs
3 YPbPr video inputs and 3 CVBS input
2 YPbPr video inputs, 2 S-Video inputs, and 2 CVBS inputs
The input selection is performed by the input select register at I2C subaddress 00h.
3.1.2 480p and 576p Component YPbPr
The TVP5160 decoder supports progressive component video inputs. The YPbPr inputs of the TVP5160
decoder may accept 480p or 576p progressive inputs. The Y channel is fed into one ADC while PbPr are
sampled alternatively by the other ADC.
3.1.3 Analog Input Clamping
An internal clamping circuit restores the ac-coupled video signal to a fixed dc level. The clamping circuit
provides line-by-line restoration of the video sync level to a fixed dc reference voltage. The selection between
bottom and mid clamp is performed automatically by the TVP5160 decoder.
3.1.4 Automatic Gain Control
The TVP5160 decoder utilizes two programmable gain amplifiers (PGAs); one per channel. The PGA can
scale a signal with a voltage input compliance of 0.5 VPP to 2.0 VPP to a full-scale, 11-bit, A/D output code
range. A 4-bit code sets the coarse gain with individual adjustment per channel. Minimum gain corresponds
to a code 0x0 (2.0-VPP full-scale input, 6 dB gain) while maximum gain corresponds to code 0xF (0.5-VPP
full scale, +6 dB gain). The TVP5160 decoder also has 12-bit fine gain controls for each channel and applies
independently to coarse gain controls. For composite video, the input video signal amplitude may vary
significantly from the nominal level of 1 VPP. The TVP5160 decoder can adjust its PGA setting automatically:
an automatic gain control (AGC) can be enabled and can adjust the signal amplitude such that the maximum
input range of the ADC is reached without clipping. Some nonstandard video signals contain peak white levels
that saturate the ADC. In these cases, the AGC automatically cuts back gain to avoid clipping. If the AGC is
on, then the TVP5160 decoder can read the gain currently being used.
The TVP5160 AGC comprises the front-end AGC before Y/C separation and the back-end AGC after Y/C
separation. The back-end AGC restores the optimum system gain whenever an amplitude reference, such
as the composite peak (which is only relevant before Y/C separation), forces the front-end AGC to set the gain
too low. The front-end and back-end AGC algorithms can utilize up to four amplitude references: sync height,
color burst amplitude, composite peak, and luma peak.
The specific amplitude references being used by the front-end and back-end AGC algorithms can be
independently controlled using the AGC white peak processing register located at subaddress 74h. The
TVP5160 gain increment speed and gain increment delay can be controlled using the AGC increment speed
register located at subaddress 78h and the AGC increment delay register located at subaddress 79h,
respectively.
3.1.5 Analog Video Output
Any one of the analog input signals is available at the analog video output pin. The signal at this pin must be
buffered by a source follower if it drives a 75- resister. The nominal output voltage is 2 VPP, and the signal
can drive a 75- line when buffered. The magnitude is maintained with a PGA in 16 steps controlled by the
TVP5160 decoder.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TVP6000C | 制造商:TI 制造商全稱:Texas Instruments 功能描述:NTSC/PAL Digital Video Encoder |
| TVP6000CPFP | 功能描述:接口—CODEC NTSC / PAL VIDEO ENCODER RoHS:否 制造商:Texas Instruments 類型: 分辨率: 轉(zhuǎn)換速率:48 kSPs 接口類型:I2C ADC 數(shù)量:2 DAC 數(shù)量:4 工作電源電壓:1.8 V, 2.1 V, 2.3 V to 5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:DSBGA-81 封裝:Reel |
| TVP7000 | 制造商:Texas Instruments 功能描述:Triple 8-bit Digitizer 150MSPS TVP7000 |
| TVP7000EVM | 功能描述:視頻 IC 開發(fā)工具 TVP7000 Eval Mod RoHS:否 制造商:Texas Instruments 產(chǎn)品:Evaluation Boards 類型:YPbPr to RGBHV Converters 工具用于評估:LMH1251 工作電源電壓:5 V |
| TVP7000PZP | 功能描述:視頻模擬/數(shù)字化轉(zhuǎn)換器集成電路 Triple 8/10B 150/110 MSPS Video ADC RoHS:否 制造商:Texas Instruments 輸入信號類型:Differential 轉(zhuǎn)換器數(shù)量:1 ADC 輸入端數(shù)量:4 轉(zhuǎn)換速率:3 Gbps 分辨率:8 bit 結(jié)構(gòu): 輸入電壓:3.3 V 接口類型:SPI 信噪比: 電壓參考: 電源電壓-最大:3.45 V 電源電壓-最小:3.15 V 最大功率耗散: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:TCSP-48 封裝:Reel |
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