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参数资料
| 型号： | TVP7001PZPR |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 消费家电 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PQFP100 |
| 封装： | PLASTIC, TQFP-100 |
| 文件页数： | 2/35页 |
| 文件大小： | 504K |
| 代理商： | TVP7001PZPR |
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FUNCTIONAL DESCRIPTION
Analog Channel
SLES164 – FEBBRUARY 2006
The TVP7001 contains three identical analog channels that are independently programmable. Each channel
consists of a clamping circuit, a programmable gain amplifier, automatic offset control and an A/D converter.
Analog Input Switch Control
TVP7001 has 3 analog channels that accept up to 10 video inputs. The user can configure the internal analog
video switches via the I2C interface. The 10 analog video inputs can be used for different input configurations
some of which are:
Up to 10 selectable individual composite video inputs
Up to 2 selectable RGB graphics inputs
Up to 3 selectable YPbPr video HD/SD inputs
The input selection is performed by the input select register at I2C subaddress 0
×19 and 0×1A (see Input Mux
Select 1 and Input Mux Select 2)
Analog Input Clamping
An internal clamping circuit restores the AC-coupled video/graphic signal to a fixed DC level. The clamping circuit
provides line-by-line restoration of the signal black level to a fixed DC reference voltage. The selection between
bottom and mid level clamping is performed by I2C subaddress 0
×10 (see Sync On_Green Threshold). Fine
clamps must also be enabled in the I2C register 2Ah for proper operation.
The internal clamping time can be adjusted by I2C clamp start and width registers at subaddress 0
×05 and 0×06
(see Clamp Start and Clamp Width).
Programmable Gain Amplifier (PGA)
The TVP7001 PGA can scale a signal with a voltage-input compliance of 0.5-Vpp to 2-Vpp to a full-scale 10-bit
A/D output code range. A 4-bit code sets the coarse gain (Red Coarse Gain, Green Coarse Gain, Blue Coarse
Gain) with individual adjustment per channel. Minimum gain corresponds to a code 0
×0 (2-Vpp full-scale input,
–6 dB gain) while maximum gain corresponds to code 0
×F (0.5-Vpp full-scale, +6 dB gain). TVP7001 also has
8-bit fine gain control (Red Fine Gain, Green Fine Gain, Blue Fine Gain) for RGB independently ranging from 1
to 2. For a normal PC graphics input, the fine gain will be used mostly.
Programmable Offset Control and Automatic Level Control (ALC)
The TVP7001 supports a programmable offset control for RGB independently. A 6-bit code sets the coarse offset
(Red Coarse Offset, Green Coarse Offset, Blue Coarse Offset) with individual adjustment per channel. The
coarse offset ranges from –32 LSB to +31 LSB. The coarse offset registers apply before the ADC. A 10-bit fine
offset registers (Red Fine Offset, Green Fine Offset, Blue Fine Offset) apply after the ADC. The fine offset ranges
from –512 LSB to +511 LSB.
ALC circuit maintains the level of the signal to be set at a value which is programmed at fine offset I2C register. It
consists of pixel averaging filter and feedback loop. This ALC function can be enabled or disabled by I2C register
address at 0
×26. ALC circuit needs a timing pulse generated internally but user should program the position
properly. The ALC pulse must be positioning after the clamp pulse. The position of ALC pulse is controlled by
ALC placement I2C register at address 0
×31. This is available only for internal ALC pulse timing. For external
clamp, the timing control of clamp is not applicable so the ALC pulse control is also not applicable. Therefore it is
suggested to keep the external clamp pulse as long as possible. ALC is applied as same position of external
clamp pulse.
A/D Converters
All ADCs have a resolution of 10-bits and can operate up to 165 MSPS. All A/D channels receive an identical
clock from the on-chip phase-locked loop (PLL) at a frequency between 12 MHz and 165 MHz. All ADC
reference voltages are generated internally. Also the external sampling clock can be used.
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相关代理商/技术参数 |
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| TVP7002 | 制造商:TI 制造商全称:Texas Instruments 功能描述:TRIPLE 8-/10-BIT 165-/110-MSPS, VIDEO AND GRAPHICS DIGITIZER WITH HORIZONTAL PLL |
| TVP70025I | 制造商:TI 制造商全称:Texas Instruments 功能描述:TRIPLE 10-BIT, 90-MSPS, VIDEO AND GRAPHICS DIGITIZER WITH HORIZONTAL PLL |
| TVP70025IPZP | 功能描述:视频模拟/数字化转换器集成电路 Tr 8/10B,165/110MSPS Video ADC RoHS:否 制造商:Texas Instruments 输入信号类型:Differential 转换器数量:1 ADC 输入端数量:4 转换速率:3 Gbps 分辨率:8 bit 结构: 输入电压:3.3 V 接口类型:SPI 信噪比: 电压参考: 电源电压-最大:3.45 V 电源电压-最小:3.15 V 最大功率耗散: 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:TCSP-48 封装:Reel |
| TVP70025IPZPR | 功能描述:视频模拟/数字化转换器集成电路 Tr 8/10B,165/110MSPS Video ADC RoHS:否 制造商:Texas Instruments 输入信号类型:Differential 转换器数量:1 ADC 输入端数量:4 转换速率:3 Gbps 分辨率:8 bit 结构: 输入电压:3.3 V 接口类型:SPI 信噪比: 电压参考: 电源电压-最大:3.45 V 电源电压-最小:3.15 V 最大功率耗散: 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:TCSP-48 封装:Reel |
| TVP7002EVM | 功能描述:视频 IC 开发工具 TVP7002 Eval Mod RoHS:否 制造商:Texas Instruments 产品:Evaluation Boards 类型:YPbPr to RGBHV Converters 工具用于评估:LMH1251 工作电源电压:5 V |
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