基于DDR3 SDRAM的高速大容量数据缓存设计

为了满足对高清非压缩视频数据的实时采集要求,解决常用数据缓存因容量小、数据读写速率低等缺点带来的数据丢失问题,提出了一种基于DDR3 SDRAM的高速大容量数据缓存的设计方法；该方法采用了不同时域数据处理技术、高速数据存储技术以及总线优先级仲裁技术,实现了数据速率高达400 Mbytes/s的实时数据的高速缓存；实践证明,该数据缓存可应用于高清非压缩视频数据的实时采集系统中。

High Speed and Large Capacity Data Buffer Design Based on DDR3 SDRAM

In order to meet uncompressed High Definition Television data in real-time collection system,and solve the problem of data loss caused by small capacity and low bandwidth of common data buffer, a high speed and large capacity data buffer based on DDR3 SDRAM is proposed in this paper; The method includes the key techniques such as data transmission in different clock domain, high bandwidth data memory design and priority arbitration on data bus;data buffer can run at a high data rate up to 400Mbytes/s.The experimental proved that the data buffer can be applied to uncompressed High Definition Television collection system .