TIDTV系统解决方案

来源：<a href='http://bbs.hqew.com/viewthread.php?tid=551486' target='_blank'>zhoumingdu</a> 作者：华仔浏览：1090 时间：2016-08-10 14:18

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摘要：

HDTV和SDTV是数字电视(DTV)中的两类显示格式,具有HDTC或SDTV功能的新的电视机,它的接收器将会把信号转换成原本的格式.当人们不断从模拟电视向数字电视过度时,DTV市场将会有大幅度的增幅.下面是TI HDTV系统的方框图.图中表明了TI所提供的元件.

HDTV系统的方框图

其中部分元器件为:
TFP501/TFP503: PanelBus HDCP Digital Receivers
TPA3102D1/TPA3100D2: 10/20-W Stereo Class-D Audio Amps
TPA505x: Adjustable Digital Delay IC
TAS5504: I2S-to-PWM Processor
TPA3300D2: 20-W Digital Power Stage
TPA6110A2: Stereo Class AB Headphone Driver
PCM178x: High-Performance Stereo DAC Converters
TPA2008D2: 3-W Stereo Class-D Audio Amplifier
TPA6030A4: 3-W Stereo Class-AB Audio Amplifier
CDCE906: Programmable 3-PLL Clock Synthesizer
CDCD5804: Rambus XDR Clock Generator
TAS3004: Digital Audio Processor with CODEC
TAS5122: 30-W Digital Amplifier Power Stage
TPA4411: Cap-Free Stereo Headphone Amplifier
LM317M: 3-Terminal Adjustable Regulator
MAX3243C/I: Multi-Channel RS-232 Line Driver/Receiver
TL52055: 2-Input, 1 Output, 3-Circuit Video Switch
TS3DV416: 4-Channel Differential 8:16 MUX Switch
TS3DV520: 5-Channel Differential 10:20 MUX Switch
下面是对各个元器件的性能和方框图进行描述:
The TFP501 and TFP503 are TI PanelBus flat panel display products, part of a comprehensive family of end-to-end DVI 1.0-compliant solutions. The TFP501/TFP503 support display resolutions up to UXGA, including the standard HDTV formats, in 24-bit true-color pixel format.
The TFP501/TFP503 offer design flexibility to drive one or two pixels per clock, support TFT or DSTN panels and provide an option for time-staggered pixel outputs for reduced ground-bounce.

Key Features

* Supports UXGA resolution (output pixel rates up to 165 MHz)
* Digital visual interface (DVI) and high-bandwidth digital content protection (HDCP) specification compliant
* Encrypted external HDCP device key storage for exceptional security and ease of implementation
* True color, 24 bits/pixel, 48-bit dual-pixel output mode; 16.7/M colors at one or two pixels per clock
* 4 oversampling for reduced bit-error rates and better performance over longer cables
* Supports hot-plug detection
* Packaging: 100-pin TQFP PowerPAD

Applications

* Desktop LCD monitors
* DLP and LCD projectors
* Digital TVs
下图为TFP501的方框图:

The TPA3100D2 and TPA3101D2 are efficient, Class-D audio power amplifiers designed for driving bridge-tied stereo speakers. The TPA3100D2 can drive stereo speakers as low as 4 The high efficiency of the TPA3100D2 (92%) eliminates the need for an external heat sink
when music is played.

Key Features

* Efficient Class-D operation
* Wide 10- to 26-V supply voltage operation
* Four integrated gain settings
* Thermal and short-circuit protection
* Fault reporting

Applications

* CRTs
* DLP TVs
* LCD TVs
* PDPs

The TPA505x series of devices provides a cost-effective, integrated lip-sync solution for TV and home theater applications. The TPA505x family provides up to 170 ms of delay per channel and comes in two stereo versions and one four-channel version.
The ease of use and small footprint make this part ideal for flatpanel TV applications.
Key Features
* 16- to 32-bit I2S input (fS = 32 to 192 kHz)
* Up to 170 ms/ch delay (48 kHz)
* I2C delay-time control allows fine resolution (down to one sample resolution)
* Fixed delay mode (5-ms steps from 20 to 170 ms)
* Cascadable for longer delay time
* Small footprint (4.4 QFN)
* 3- to 3.6-V operation

Applications

* Flat-panel TVs
* DLP, LCD, plasma
* Home theaters
* DVD minicompos

The TAS5504 is a four-channel digital pulse width modulator that provides advanced performance and high-level system integration. It is designed to interface seamlessly with multiple digital audio processors.

Key Features

* Four-channel digital audio pulse width modulation (PWM) processor
* I2S inputs
* PWM output
* Supply voltage: 3.3 V
* Inputs are 5-V tolerant
* High-performance digital audio (DAP)
* 48-bit audio processing
* Dynamic range: > 102 dB
* Sampling rates: 32 kHz to 192 kHz
* Four bass and treble tone controls

Applications

* Plasma TVs

The TPA3300D2 is a fully integrated power stage accepting PWM inputs and 20 W.2 output. It is TI’s first power stage with integrated feedback, allowing very high PSRR and improved audio performance. In addition, it detects fault conditions such as over-current or over-temperature.

Key Features

* Efficient Class-D operation
* Wide 10- to 26-V supply voltage operation
* Direct connection to PWM processor
* High-power-supply rejection
* Fault reporting

Applications

* CRTs
* DLP TVs
* LCD TVs
* PDPs

The TPA6110A2 is a stereo headphone driver designed to connect directly to the TPA3004D2 or TPA3002D2 with minimal external components.
The integrated depop circuitry nulls “pops” and “clicks” during startup or shutdown transitions.

Key Features

* 150-mW stereo into 16 from 4.5 V with < 0.1% THD+N
* Full short-circuit and thermal protection
* Excellent depop circuitry
* Low supply current: 1.5 mA from 5 V

Applications

* Large-screen multifunction monitors and LCD TVs
* Portable DVD players

The PCM1780/81/82 are cost-effective, high-performance stereo digitalto-analog converters. Utilizing TI’s enhanced multi-level delta-sigma architecture, they achieve excellent dynamic performance and improved tolerance to clock jitter. The PCM1780 is footprint-compatible with the PCM1680 eight-channel DAC, enabling faster design time for multiple product families.

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型号	厂商	价格
EPCOS	爱普科斯	/
STM32F103RCT6	ST	￥461.23
STM32F103C8T6	ST	￥84
STM32F103VET6	ST	￥426.57
STM32F103RET6	ST	￥780.82
STM8S003F3P6	ST	￥10.62
STM32F103VCT6	ST	￥275.84
STM32F103CBT6	ST	￥130.66
STM32F030C8T6	ST	￥18.11
N76E003AT20	NUVOTON	￥9.67

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