摘要
针对多DS(P数字信号处理器)的数据传输有三种常用接口方式:EMIF,HPI和McBSP方式。而采用EMIF接口方式,利用FPGA(现场可编程逻辑门阵列)设计FIFO的接口电路,将各个DSP的EMIF总线接入FPGA中,可实现多块DSP之间的连接。实验结果表明,这种方式无需外加逻辑器件即可实现高速传送数据,适用于数据块的传送。这种设计已应用于由4片DSP构成的信号处理系统中。
There are three main interface manners, i.e. EMIF （External Memory Interface）, HPI （host-port interface） and McBSP （multi-channel buffered serial port） among multi-DSP （digital signal processor）. And the Muti-DSP connection can be realized through connect every DSP to FPGA （field programmable gate array） when the EMIF was used and the FIFO （first-in, first-out） interface circuit was designed with FPGA. The experimental results showed, by this way, data and/or data block could be quickly transferred among several DSP without extra logic components. For practice, it had been applied to the system for producing signal process using 4 pieces of DSP.
出处
《中国测试技术》
2008年第3期71-73,共3页
CHINA MEASUREMENT & TESTING TECHNOLOGY
