摘要：

The DM642 DSP has three 20-bit video ports capable of high definition (HD) display. The video ports can be programmed to follow HDTV standards, such as SMPTE274M and SMPTE296M. These HDTV standards follow a 4:2:2 convention where luminance and chrominance signals are separated onto two different 8- or 10-bit data paths. This convention is more commonly called Y/C mode. Many new HD displays accept Y'P_bP_r component inputs (analog luminance and chrominance). The DM642 outputs digital luma and chroma (Y'C_bC_r) and must be converted to analog, which can be achieved using the THS8200 triple-video digital-to-analog converter (DAC). This application note gives a brief discussion on the HDTV standards and demonstrates the hardware requirements/implementation for interfacing the DM642 video port to a THS8200. A future revision of this application note will give software configurations, THS8200 drivers, and an example application proving the discussed system.



文档：spra961a.pdf

链接：http://www.ti.com.cn/general/cn/docs/litabsmultiplefilelist.tsp?literatureNumber=spra961a