视频解码器SAA7111的DSP初始化

DSP Initializing of the Video Decoder SAA7111

利用DSP(TMS320F2812)主控制器的两个普通I/O口,模拟I2C总线技术,实现了对视频解码器SAA7111的初始化设置。文中介绍了I2C总线时序设计,并给出了读写流程及验证结果;而且对SAA7111的寄存器配置步骤做了说明,最后通过实验得出SAA7111的初始化结果完全满足要求。

This paper simulates the I2C bus techonology to accomplish the initialize settings of the video decoder chip by using the two common I/O interface of DSP（TMS320F2812） main controller.It introduces the I2C bus time sequence design,gives the read and write procedure and the verification results.It also illustrates the setting step of the SAA7111 register.The experimental results show that the initialize results entirely meet the demands.