高速SPI接口在OSD中的应用  

The High-Speed SPI Interface Application in the OSD

作　　者：施根勇[1] 黄世震[1] 

机构地区：[1]福州大学福建省微电子集成电路重点实验室,福州350002

出　　处：《电子器件》2012年第2期227-231,共5页Chinese Journal of Electron Devices

摘　　要：面对日益华丽的OSD开发,出现了加载OSD信息的速度瓶颈。设计基于SPI总线,在FLASH与视频字符处理模块之间建立一条高速通道。该设计使用Verilog HDL语言实现RTL设计,详细阐述了高速SPI的设计思路,详细说明了IP核的系统架构,接口信号和子模块设计。经过FPGA验证结果表明,传输速率大幅度提高,满足在了OSD应用中高带宽的速度要求。Facing the increasingly gorgeous OSD（On Screen Display）design,there is a bottleneck speed of loading the OSD message.The design is based on the SPI bus and built a high-speed channel between the flash and video processing module.Verilog HDL language is used to realize the RTL design.Design ideas of the high-speed SPI is detailed to discuss,especially the system architecture,interface signals and sub-module design.At last,the design meets the high-speed OSD applications after the FPGA verification.

关 键 词：IP核 高速SPI 视频字符叠加 VERILOG HDL 硬件设计语言 

分 类 号：TN944[电子电信—信号与信息处理]