Blackfin DSP嵌入式图像数据采集机制设计

Design of Blackfin DSP Embedded Image Data Capture Mechanism

针对Blackfin Dsp媒体信号处理器硬件资源,着重分析了SDRAM上数据总线的冲突问题,并且提出了解决方案,在软件架构上提出了利用Blackfin DSP自带的已经封装好了的API功能函数,实现了对CMOS图像传感器以及DSP内部资源的配置,试验表明采集程序稳定性高,DSP功耗更低,更加节省SDRAM的传输带宽,能够满足实时图像采集和编码的要求。

About the hardware resources of media signal processor,this paper especially analyze the collision′ problems on the data bus of SDRAM,and put forward solutions about it.meanwhile it also make use of functions encapsulated in function storeroom of Blackfin DSP to realize the register configuration of CMOS image sensor and ADSP—BF533.the experimental results show that the program is more stabilization,the power consumption of DSP is lower,and more saving transimission bandwidth of SDRAM.It satisfy the requriments of real—time image collection and coding system.