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ADV8005多輸入視頻信號處理方案

文章來源：更新時間：2014/7/29 9:09:00

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ADI公司的ADV8005是多輸入視頻信號處理器,是全12位4:4:4 YCbCr內部處理,運動自適應的逐行掃描,多個視頻處理通路并支持畫中畫功能(PiP),具有標準清晰度(SD),增強清晰度(ED)和高清(HD)視頻數據,支持CEA-861-F和VESA標準中的許多格式,主要用在高端A/V接收器,DVD播放器/刻錄機,視頻會議和分配以及HDMI分隔器視頻墻.本文介紹了ADV8005主要特性和詳細功能框圖, 應用系統框圖以及Advantiv EVAL-ADV8005-SMZ視頻評估板主要特性,框圖,電路圖,材料清單,PCB元件布局圖和PCB設計圖.

The ADV8005 is a multiple input video signal processor that can deinterlace and scale standard definition (SD), enhanced definition (ED), or high definition (HD) video data to ultra HD formats; generate a bitmap on-screen display (OSD); and output the video with OSD overlaid on two High-Definition Multimedia Interface (HDMI®) transmitters and a video encoder. The 60-bit TTL video port can be used to input video to the ADV8005 in a number of ways: using the 48-bit TTL pixel port, using the 24-bit external OSD TTL pixel port, or from a device with an HDMI transmitter such as the ADV7850.

The ADV8005 supports many of the formats outlined in the CEA-861-F and VESA specifications, as well as several other widely used timing formats. The ADV8005 features primary and secondary video scalers that enable simultaneous output of multiple different resolutions. The primary video scaler can upscale to 4k × 2k modes. The secondary video scaler can upscale to 1080p or UXGA graphics. 4k × 2k downscaling is performed using the secondary video scaler, leaving the primary video scaler available for other video processing.

The ADV8005 primary video scaler can perform high performance, motion adaptive interlaced to progressive conversion on SD and HD content. Additional functionality has also been added to ADV8005 to facilitate upscaling and downscaling to VESA formats with pixel clock frequencies below 300 MHz.

Detail enhancement and image enhancing techniques such as random, mosquito, and block noise reduction allow improved final image quality. The frame rate converter of the ADV8005 allows the conversion between common frame rates with support to output two different frame rates simultaneously under certain conditions.

The ADV8005 can accept OSD information from an external OSD source on one of its inputs, or it can internally generate a high quality, bitmap-based OSD. The internal OSD is highly flexible and allows the system designer to easily incorporate features like scrolling text and animation in various color depths up to 24-bit true color.

Analog Devices, Inc., provides an OSD development tool (Blimp) to assist in the design, debug, and emulation of the OSD prior to integration with the system application. When the design is complete, the OSD development tool automatically generates code to which system application programming interfaces (APIs) can be added before integration with the system application and an OSD design resource, which must be downloaded to an external SPI flash memory.

Video can be output from the ADV8005 using one or both of the HDMI transmitters and/or the six-DAC SD/HD video encoder. The six 12-bit NSV® video DACs allow composite (CVBS), S-Video (Y/C), and component (YPrPb) analog outputs in standard, enhanced, and high definition video formats. Oversampling of 216 MHz (SD and ED) and 297 MHz (HD) removes the requirement for external output filtering. Rovi® and non-Rovi variants of the ADV8005 are available.

Both of the HDMI transmitters on the ADV8005 support 4k × 2k and all mandatory and many optional 3D video resolutions. Each transmitter features an audio return channel receiver (ARC). The ADV8005 can receive up to eight channels of I2S, S/PDIF, direct stream digital (DSD), and high bit rate (HBR) audio passed from either the serial video Rx or from the externally available audio input pins.

The ADV8005 supports the I2C protocol for communication with the system microcontroller. ADV8005 MODELS
The ADV8005 includes a number of models, each featuring different capabilities; all are provided in the same 19 mm × 19 mm, 425-ball CSP_BGA package.

Note that the functionality of the ADV8005KBCZ-8A is described throughout this data sheet. Some sections are not relevant to other models because not all of the blocks found in the ADV8005KBCZ-8A are included in those models. Table 9 lists the functionality for each model.

ADV8005主要特性:

Video signal processor
Full 12-bit, 4:4:4 YCbCr (color space) internal processing
Motion adaptive deinterlacing with ultralow angle interpolation
Multiple video processing paths with up to 3 simultaneous video streams including picture-in-picture (PiP) support
Upscaling and downscaling to/from 4k × 2k
Aspect ratio conversion/panorama scaling
Cadence detection for the recovery of original frames from film-based content
Dual video scalers enable simultaneous output of multiple different resolutions
Sharpness and detail enhancement N
oise reduction for random, mosquito, and block noise
Frame rate converter (FRC)
Video metrics readback to enable correct phase and frequency selection for graphics inputs
On-screen display (OSD)
Internally generated bitmap-based OSD allowing overlay on one or more video outputs
Overlay on 3D and 4k × 2k video formats
Dedicated OSD scaler Alpha blending of OSD data on video data
Disturbance free blending of OSD on either of 2 zones
Support for external OSD Easy to use software tool for developing OSDs
HDMI transmitters
Dual 4k × 2k HDMI transmitters
Audio return channel (ARC) support
Dual audio insertion from TMDS Rx or from audio input pins
Support for serial audio using the S/PDIF audio pin
8-channel I2S audio inputs supporting up to 192 kHz sample frequency
6-channel direct stream digital (DSD) audio inputs
Noise shaped video (NSV) 6-DAC video encoder
Six 12-bit NSV video DACs supporting SD, ED and HD video
Rovi Rev. 7.1.L1 (SD) and Rev. 1.4 (ED) compliant Professional video features
Capability to output up to 36-bit
TTL pixel data
Full color space converter on the output TTL pixel data TTL video, audio, SPI, and interrupt pins disabled by default
Ability to synchronize output video to externally applied reference sync signals

ADV8005應用:

High end A/V receivers
Upconverting DVD players/recorders
Video conferencing and distribution
HDMI splitters Video walls

圖1. ADV8005功能框圖

圖2. ADV8005KBCZ-8A詳細功能框圖

圖3.ADV8005應用系統框圖

Advantiv EVAL-ADV8005-SMZ視頻評估板

The Advantiv® EVAL-ADV8005-SMZ video evaluation board (AVEB) is a low cost solution for evaluating the performance of the ADV8005 video signal processor.

The evaluation board provides a Blackfin® ADSP-BF524 processor for system control and includes a software driver (firmware) that provides a serial command interface to control the board’s functionality.

This evaluation board includes High-bandwidth Digital Content Protection (HDCP) technology and is only available to licensees of HDCP.

Advantiv EVAL-ADV8005-SMZ視頻評估板主要特性:

Primary Inputs: 1 HDMI (HDCP)
Secondary Inputs: 1 HDMI (HDCP)
(the board also includes VGA input and Component input
but these are not currently supported by the SW driver)
Outputs: 1 HDMI
ADDITIONAL EQUIPMENT/SOFTWARE NEEDED
Computer with RS-232 I/O for:
Sending commands to the software driver and viewing
debug messages from the software driver
Reading/writing registers using the AVES3 application for
Windows (requires Windows 7 or higher)
Updating the software driver (if desired or necessary)