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ADI公司的視頻編碼器EI3擴展板是插在EZ-KIT Lite/EZ評估系統如ADSP-BF609 EZ-KIT Lite®評估系統的擴展接口3(EI3)上的子板,在處理器的并行外設接口(PI)和ADV7511(HDMI發送器)與ADV7341多格式視頻編碼器之間提供連接,支持EI3標準,而處理器的兩線接口(TWI)用來和擴展板的視頻編碼器和SoftConfig進行通信.譯碼器采用ADV7842.本文介紹了視頻編碼器和譯碼器主要特性,ADV7511和ADV7341主要特性,視頻編碼器EI3擴展板主要特性,方框圖,電路圖和材料清單. The Video Encoder EI3 Extender Board is a separately sold daughter board that plugs onto the expansion interface 3 (EI3) of an EZ-KIT Lite/EZ-Board evaluation system. The extender board aids the design and prototyping phases of embedded processor-targeted applications. The board extends the capabilities of the evaluation system by providing a connection between the parallel peripheral interface (PPI) of the processor and the ADV7511 and ADV7341 video encoders. The SPORT is used for transmitting audio data. The two-wire interface (TWI) port of the processor is used to communicate to the video encoders and SoftConfig on the Extender. The following is a list of the Video Encoder EI3 Extender Board interfaces. • Video interface • ADV7511 — 225 MHz, high performance HDMI transmitter with ARC • ADV7341— multi-format video encoder, six 12-bit noiseshaped video DACs • Video connectors • One HDMI • One SVIDEO • One Component • One Composite • No power supply required: derives power from the EZ-KIT Lite/EZ-Board • CE certified • Traditional mechanical switches and jumpers for changing the board’s factory setup have been removed in favor of I2C-controlled software switches. The Video Encoder and Video Decoder EI3 Extender Boards, both EZ-Extender® products, are low cost platforms facilitating the evaluation of video processing on an Analog Devices Embedded Processor via Analog Devices’ EZ-Board development hardware and the CrossCore® Embedded Studio software development environment. The encoder has two video output devices. The first is the Analog Devices ADV7511, an HDMI transmitter for home entertainment products such as gaming consoles, PCs, DVD payers and recorders, digital set top boxes and A/V receivers. The second is the Analog Devices ADV7341, an encoder for DVD recorders and players and HD Blu-ray DVD players. The decoder employs the Analog Devices ADV7842, a device for AVR video receivers, LCD/DLP front projectors, HDTV STBs with PVR, projectors and advanced TVs such as PDP HDTVs, LCD TVs, LCD/DLP rear projection HDTVs, CRT TVs LCoS HDTVs. These EZ-Extenders connect with embedded processor EZ-Boards that support the Expansion Interface 3 (EI3) specification. This new interface facilitates more available signals on the interface connectors and a reduction in size over the previous EI2 specification. Software examples are provided to demonstrate the functionality of the devices on the Extender. 視頻編碼器主要特性: Multi-format video encoding. 225 MHz high performance HDMI transmitter with ARC. Six 12-bit noise shaped video DACs. Connections include HDMI, SVIDEO, Composite, Component, and VGA. Formats up to 1080p. Color depths up to 24-bits. Soft configuration. 視頻譯碼器主要特性: Dual HDMI 1.4 fast switching receiver. 12-bit, 170 MHz video and graphics digitizer. 3D comb filter decoder. 256 Mbit DDR SDRAM. Power and Two Hot Plug Detect LEDs. Connections include 2 HDMI, DB15 VGA, Composite, Component. Formats up to 1080p. Color depths up to 24-bits. Soft configuration. 高性能HDMI發送器(ADV7511) The ADV7511 is a 225 MHz high-definition multimedia interface (HDMI) transmitter, which is ideal for home entertainment products including DVD players/receivers, digital set top boxes, A/V receivers, gaming consoles and PCs. The digital video interface contains an HDMI v1.4 and a DVI v1.0 compatible transmitter and supports all HDTV formats (including 1080p with 12-bit Deep Color). The ADV7511 supports the HDMI v1.4 specific features, HEAC (ARC), and 3D video. In addition, the ADV7511 supports x.v.Color, high bit rate audio and programmable AVI Info Frames features. With the inclusion of HDCP, the ADV7511 allows the secure transmission of protected content as specified by the HDCP v1.4 protocol. The ADV7511 high-performance HDMI transmitter with ARC connects to the PPI, SPORT, TWI and GPIO of the processor. This device supports up to 1080p. The ADV7511 can be configured to generate an interrupt based on various events. The TWI port is used for communication between the transmitter and processor. The PPI is used for transmitting video data. The SPORT is used for transmitting audio data. An interrupt signal from the transmitter is connected to a GPIO signal on the processor. 多格式視頻編碼器(ADV7431) The ADV7341 is a high speed, digital-to-analog video encoder. Six high speed, NSV, 3.3V, 12-bit video DACs provide support for composite (CVBS), S-Video (Y-C), and component (YPrPb/RGB) analog outputs in standard definition (SD), enhanced definition (ED), or high definition (HD) video formats. The ADV7341 has a 30-bit pixel input port that can be configured in a variety of ways. SD video formats are supported over an SDR interface and ED/HD video formats are supported over SDR and DDR interfaces. Pixel data can be supplied in either the YCrCb or RGB color space. The part also supports embedded EAV/SAV timing codes, external video synchronization signals, and I2C communication protocol. In addition, simultaneous SD and ED/HD input and output are supported.Full-drive DACs ensure that external output buffering is not required, while 216 MHz (SD and ED) and 297 MHz (HD) oversampling ensures that external output filtering is not required. The ADV7341 multi-format video encoder connects to the PPI and TWI of the processor. This device supports up to 1080i/720p. The TWI port is used for communications between the encoder and processor. The PPI is used for transmitting video data. 
圖1.視頻編碼器和譯碼器外形圖
圖2.視頻編碼器EI3擴展板方框圖
圖3.視頻編碼器EI3擴展板電路圖(1):EI3連接器/ PIO擴展器
圖4.視頻編碼器EI3擴展板電路圖(2):電壓轉換器
圖5.視頻編碼器EI3擴展板電路圖(3):視頻模式
圖6.視頻編碼器EI3擴展板電路圖(4):ADV7511
圖7.視頻編碼器EI3擴展板電路圖(5):ADV7341
圖8.視頻編碼器EI3擴展板電路圖(6):視頻連接器
圖9.視頻編碼器EI3擴展板電路圖(7):電源 視頻編碼器EI3擴展板材料清單:
視頻編碼器EI3擴展板和配套使用的ADSP-BF609 EZ-KIT Lite®評估系統見: http://m.qingdxww.cn/thread-89119-1-1.html 詳情請見: 
video_encoder_ei3_extender_man_Rev_1_0.pdf
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ADV7511/7341:視頻編碼器EI3接口擴展板方案 ADI公司的視頻編碼器EI3擴展板是插在EZ-KIT Lite/EZ評估系統，如ADSP-BF609 EZ-KIT Lite評估系統的擴展接口3(EI3)上的子板，在處理器的并行外設接口(PI)和ADV7511(HDMI發送器)與ADV7341多格式視頻編碼器之間提供連接。支持EI3標準而處理器的兩線接口(TWI)用來和擴展板的視頻編碼器和SoftConfig進行通信，譯碼器采用ADV7842。 視頻編碼器EI3擴展板接口的列表如下： •視頻接口 • ADV7511-225MHz高性能HDMI發射器與ARC • ADV7341多格式視頻編碼器，六個12位noiseshaped的視頻DAC
圖1 視頻編碼器EI3擴展板方框圖 •視頻連接器 •一個HDMI •一個SVIDEO •一個組件 •一個復合 •無需電源，EZ-KIT Lite/ EZ板上獲得電源 • CE認證 •改變電路板出廠設置的傳統機械開關和跳線已被刪除，改為I2C控制軟件開關 視頻編碼器和視頻解碼器EI3擴展板，兩個EZ-Extender產品，都是低成本的平臺，通過ADI公司的EZ-板開發硬件和CrossCore Embedded Studio軟件開發環境，進行ADI公司的嵌入式處理器的視頻處理評估。 該編碼器具有兩個視頻輸出設備。一是ADI公司的ADV7511，是家庭娛樂產品的HDMI發射器，如游戲機、電腦、DVD和錄像機、數字機頂盒、A/V接收器。二是ADI公司的ADV7341，是一個DVD錄像機、播放機和高清藍光DVD的編碼器。 解碼器采用ADI公司的ADV7842，用于AVR視頻接收器裝置，LCD/DLP前端投影機，HDTV機頂盒及PVR，投影機和先進的電視機，如PDP高清電視、液晶電視、LCD/ DLP背投高清電視、CRT電視、LCoS高清電視。 視頻編碼器主要特性 •多格式視頻編碼 • 225MHz高性能的HDMI發射器與ARC • 6個12位噪聲整形視頻DAC •連接包括HDMI、S-端子、復合、器件和VGA •格式最高可達1080p •色彩深度可達24位 •軟件配置 視頻譯碼器主要特性 •雙HDMI 1.4的快速切換接收器 • 12位，170MHz視頻和圖形數字化儀 • 3D梳狀濾波器的解碼器 • 256M DDR SDRAM •電源和兩個熱插拔檢測的LED •連接包括DB15 VGA、HDMI、復合、器件 •格式最高可達1080p •色彩深度可達24位 •軟件配置 ADV7511 ADV7511是一個225MHz的高清晰度多媒體接口（HDMI）發送器，適用于家庭娛樂產品，包括DVD播放器/接收器、數字機頂盒、A/V接收器、游戲機和個人電腦。其數字視頻接口包含HDMI v1.4和DVI v1.0兼容發射器，支持所有的HDTV格式（包括1080p及12位色深）。 ADV7511支持HDMI v1.4特定功能、HEAC（ARC）、和3D視頻。此外，ADV7511還支持xvColor、高比特率的音頻和可編程的AVI信息幀功能。 由于包含了HDCP，ADV7511可以安全傳輸，HDCP v1.4 協議規定的受保護的內容。
圖2 視頻編碼器EI3擴展板電路圖(1):EI3連接器/ PIO擴展器 高性能的ADV7511 HDMI發送器，ARC連接到處理器的PPI，SPORT，TWI和GPIO。該器件最高支持1080p。ADV7511可以配置，以產生各種事件的中斷。 TWI端口用于發射器和處理器之間的通信。PPI用于發送視頻數據。SPORT用于傳輸音頻數據。發射機的中斷信號被連接到處理器上的GPIO信號。 ADV7341 ADV7341是一種高速，數字-模擬視頻編碼器。包括6個高速、NSV、3.3V，12位視頻DAC支持復合視頻（CVBS）、S-視頻（YC）和器件（YPrPb/ RGB）模擬輸出，包括標準清晰度（SD）、增強清晰度（ED）或高清晰度（HD）視頻格式。ADV7341有一個30位像素輸入端口，可配置為各種不同的方式。SD視頻格式由SDR接口支持，ED/HD視頻格式由SDR和DDR接口支持。YCrCb或RGB顏色空間可以提供像素數據。該器件還支持嵌入式EAV / SAV時序碼，外部視頻同步信號和I2C通信協議。 此外，還支持SD和ED/HD同步輸入和輸出。Full-drive DACs確保了不需要外部輸出緩沖，而216MHz（SD，ED）和297MHz（HD）的過采樣，則確保了不需要外部輸出濾波。ADV7341多格式視頻編碼器連接到處理器的PPI和TWI。該器件支持1080i/720p。TWI端口用于編碼器和處理器之間的通信。PPI用于發送視頻數據。 （中電網、《世界電子元器件》） |
