基于FPGA实现多DSP系统的数据流高效广播  

Data stream broadcasting efficiently in a multi-DSP system based on FPGA

作　　者：张建兵[1] 李悦丽[1] 段巧雄[1] 

机构地区：[1]国防科学技术大学电子科学与工程学院,湖南长沙410073

出　　处：《电子技术应用》2011年第11期33-36,共4页Application of Electronic Technique

摘　　要：以ADSP-TS201构成的多DSP系统中,链路口数目有限会造成数据广播复杂度的提高。为此提出了一种基于FPGA实现DSP间广播通信的方案。设计了基于FPGA的链路口接收和发送模块,采用自定义数据报头,完成了基于令牌和轮询的数据调度状态机的设计,实现了DSP之间的一对一、一对多以及多对多的广播通信。经验证,该广播通信方法的吞吐率单向可达150 MB/s,双向可达300MB/s,数据传输可靠,具有可扩展性。In a muhi-DSP system which uses ADSP-TS201 as a computer node, it is complicated to broadcast a message to each DSP at the same time. A scheme based on FPGA is presented to resolve this problem. At first, the receiving and transmitting modules are designed. Then, by using a custom data header,a poll-token-based state machine is designed to schedule the trans- mission. As a result, the broadcasting communication from point-to-point, point-to-multipoint and muhipoint-to-muhipoint are implemented totally. The test results in an FPGA are shown to prove the reliability with a unidirectional throughput of 150 MB/s and a full-duplex throughput of 300 MB/s. The design is scalable and flexible.

关 键 词：多DSP ADSP—TS201 FPGA 链路口 

分 类 号：TN914.5[电子电信—通信与信息系统]