TP9950视频转换芯片的iic驱动代码开发

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资源摘要信息:"TP9950视频转换芯片是专为视频解码领域设计的高性能芯片,它支持多种高清视频格式解码并具有多通道输入与输出能力。TP9950的iic驱动代码文件名"tp9950_drv.c"表明了它是一个与硬件通信的底层代码文件。" 知识点: 1. 高清视频解码:TP9950支持多种高清模拟视频格式解码,包括但不限于HD-TVI、CVI、AHD、TVI、CVBS等。其中,它能处理的最高视频输入规格为1080p@30fps。这代表了它能够清晰地解码高分辨率的视频信号,并且视频帧率可以达到每秒30帧的流畅标准。 2. 多通道输入与输出:TP9950支持4路视频信号的接入,并且可以通过一路输出。输出接口包括CSI(Camera Serial Interface)和BT656这两种。CSI接口通常用于高速串行通信,适合于与摄像头模块的数据交换;而BT656接口是一种并行接口,适用于标准的模拟视频信号传输。 3. 图像信号处理:TP9950集成了强大的数字信号处理功能,包括可编程控制回路,以及根据SMPTE-296M和SMPTE-274M标准的线锁定采样。SMPTE标准定义了数字视频和音频的格式,保证了视频信号的同步和稳定性。此外,TP9950还具备可编程的图像控制功能,可以根据需要调整图像质量,以达到最佳的显示效果。 4. 双向数据通信:与兼容的编码器或集成的ISP(Image Signal Processor)以及HD-TVI编码器和主机控制器配合工作时,TP9950能在同一电缆上实现双向数据通信。这种能力对于实时监控系统尤为关键,因为它允许控制器与摄像头之间进行数据交换,如控制指令和状态反馈等。 5. 集成MIPI CSI-2发射机:TP9950内置了MIPI CSI-2发射机,符合MIPI(Mobile Industry Processor Interface)标准,这是一套专为移动设备设计的高速串行接口规范。有了这一特性,TP9950能够方便地与其他符合MIPI标准的设备相连接,如智能手机、平板电脑或其他便携式电子设备。 6. 应用领域:TP9950芯片主要应用于需要进行高清视频传输和处理的领域,例如汽车电子行业中的车载监控系统和行车记录仪等。 7. 驱动代码:"tp9950_drv.c"文件是TP9950视频转换芯片的iic驱动代码,这意味着它是一个底层的控制代码文件,负责与硬件芯片进行通信。该驱动代码通过IIC(Inter-Integrated Circuit)总线来实现数据传输和命令执行,IIC是常见的串行通信协议,常用于微控制器和各种外围设备之间的通信。通过这样的驱动代码,软件应用程序可以实现对TP9950芯片的配置和控制,进而执行相应的视频处理任务。
2018-11-20 上传
TP2915 is a video D/A solution for converting HD digital video signal into the analog domain that is suitable for transmission over single coaxial or twist-pair cable over long reach. The major application is the Automotive interconnect between HD display and HD camera systems or any other applications require robust and low cost transmission of HD video. TP2915 generates the analog video signal complying with HD Transport Video Interface (HD-TVI) format. It is one form of the HD composite video format that is widely adopted in the industry. TP2915 can support a variety of video resolution digital video input standards in 422 or 444 formats over 8, 16 or 24-bit interface with the embedded synchronization (EAV/SAV) header or explicit sync signals. It also accepts 24-bit RGB input with external sync signals. It has the built-in sync extraction logic to obtain the sync information inside the video stream. The video resolutions supported range from SD (NT/PAL) to UHD. TP2915 contains a versatile video timing generator that is programmable for all standards supported and other non-standard video formats. It has programmable clip/shift/scale function to proper condition the input video signal for further processing. It also has an optional 2x over-sampling filters built-in to support higher output sample rate. Over-sampling can relax the external analog filter requirement. TP2915 supports selectable current mode and voltage mode output as well as internal programmable analog reconstruction filter. The built-in data slicer help minimize glue circuits. The signal amplitude of the DAC output can be set by external current setting resistor. It also has built-in color bar test pattern generator for easy testing and adjustment. TP2915 has built-in clock jitter reduction circuit based on local crystal clock to ensure the output signal performance.