ADI ADV7282A差分輸入四路過(guò)取樣SDTV視頻譯碼解決方案

ADI公司的ADV7282A是10位四路過(guò)取樣SDTV視頻譯碼器，差分輸入，支持NTSC/PAL/SECAM彩色解調(diào)，視頻輸入每路支持CVBS， Y/C和YPrPb模式，模擬視頻輸入通路配有抗混淆濾波器，NTSC/PAL/SECAM 自動(dòng)檢測(cè)，2線I2C兼容串行接口，具有汽車(chē)應(yīng)用的資格和降功耗模式，工作溫度?40℃ 到 +105℃ ，主要用在高檔駕駛輔助，汽車(chē)娛樂(lè)系統(tǒng)，媒體播放器和視頻安全DVR.本文介紹了ADV7282A主要特性，功能框圖，應(yīng)用電路以及評(píng)估板EVAL-ADV7282AEBZ主要特性，連接圖和電路圖。

The ADV7282A1 has the same pinout as and is softwarecompatible with the ADV7282. The mobile industry processorinterface （MIPIR） model of the ADV7282A （ADV7282A-M）has the same pinout as and is software compatible with theADV7282-M.

All features， functionality， and specifications are shared by theADV7282A and the ADV7282A-M， unless otherwise noted.The ADV7282A is a versatile one-chip， multiformat videodecoder that automatically detects standard analogbasebandvideo signals and converts them into YCrCb 4:2：2 componentvideo data streams.

The analog input of the ADV7282A features an input mux（4-channel on ADV7282A， 6-channel on ADV7282A-M）， asingle 10-bit analog-to-digital converter （ADC） and an on-chipdifferential to single-ended converter to accommodate thedirect connection of differential， pseudo differential， or singleendedCVBS without the need for external amplifier circuitry.

The standard definition processor（SDP）in the ADV7282Aautomatically detects PAL， NTSC and SECAM standards in theform of composite， S-Video（Y/C）and component. The analogvideo is converted into a 4:2：2 component video data streamthat is output either via an 8-bit ITU-R BT.656standardcompatibleinterface（ADV7282A）or via a MIPI CSI-2 Tx（hereafter referred to as MIPI Tx） interface （ADV7282A-M）。

The ADV7282A also feature a deinterlacer for interlaced toprogressive （I2P） conversion.The ADV7282A offers short to battery （STB） diagnostic senseinputs and general-purpose outputs.

The ADV7282A is provided in a space-saving LFCSP surfacemount，RoHS compliant package. The ADV7282A is rated overthe ?40℃ to +105℃ temperature range， making it ideal forautomotive applications.

ADV7282A主要特性：

Worldwide NTSC/PAL/SECAM color demodulation support

One 10-bit ADC， 4× oversampling per channel for CVBS， Y/C，and YPrPb modes

Analog video input channels with on-chip antialiasing filter

ADV7282A： up to 4 input channels

ADV7282A-M： up to 6 input channels

Video input support for CVBS （composite）， S-Video （Y/C），and YPrPb （component）

Fully differential， pseudo differential， and single-ended

CVBS video input support

NTSC/PAL/SECAM autodetection

STB diagnostics on 2 video inputs

Up to 4 V common-mode input range solution

Excellent common-mode noise rejection capabilities

5-line adaptive 2D comb filter and CTI video enhancement

Integrated AGC with adaptive peak white mode

Fast switching capability

Integrated I2P video output converter （deinterlacer）ACE

Downdither （8-bit to 6-bit）

Rovi copy protection detection

8-bit ITU-R BT.656 YCrCb 4:2：2 output and HS，VS，or fieldsynchronization （ADV7282A）

MIPI CSI-2 output interface （ADV7282A-M only）

Full featured VBI data slicer with WST support

Power-down mode available

2-wire， I2C-compatible serial interface

Qualified for automotive applications

?40℃ to +105℃ temperature grade

32-lead， 5 mm × 5 mm， RoHS compliant LFCSP

ADV7282A應(yīng)用：

Advanced driver assistance

Automotive infotainment

DVRs for video security

Media players

圖1.ADV7282A功能框圖

圖2.ADV7282A-M功能框圖

圖3.ADV7282A典型連接圖

圖4. ADV7282A-M典型連接圖

評(píng)估板EVAL-ADV7282AEBZ

The EVAL-ADV7282AEBZ evaluation kit is the platform provided by Analog Devices， Inc.， to evaluate the ADV7282A video decoder. The EVAL-ADV7282AEBZ evaluation kit contains an EVAL-ADV7282AEBZ evaluation board and all of its necessary peripherals.

This user guide provides a detailed overview of the EVAL-ADV7282AEBZ evaluation board hardware and the software required to use it.The ADV7282A data sheet and the ADV7280A/ADV7281A/ ADV7282A Device Manual should be consulted in conjunction with this user guide when using the EVAL-ADV7282AEBZ evaluation board.EngineerZone can be accessed to find additional information about the ADV7282A.

評(píng)估板EVAL-ADV7282AEBZ主要特性：

Four video input ports capable of accepting any of the following formats： single-ended CVBS， S-video （Y/C）， and component （YPbPr）

Digital （ITU-R BT.656） and YPbPr outputs

評(píng)估板EVAL-ADV7282AEBZ包括：

EVAL-ADV7282AEBZ evaluation board

7.5 V power supply block

USB cable

圖5.評(píng)估板EVAL-ADV7282AEBZ外形圖

圖6.評(píng)估板EVAL-ADV7282AEBZ連接圖

圖7.評(píng)估板EVAL-ADV7282AEBZ電路圖（1）

圖8.評(píng)估板EVAL-ADV7282AEBZ電路圖（2）

圖9.評(píng)估板EVAL-ADV7282AEBZ電路圖（3）