摘要
针对高速数据采集系统中数据I/O通道速度瓶颈制约的问题,采用XMC底板+XMC接口板的架构,设计实现了一种基于串行总线的数据I/O通道;XMC底板采用市场上成熟的XMC转PCI-E适配器,实现XMC底板与上位计算机之间的PCI-E通信,目前8x的PCI-E计算机与FPGA的通信速度是1.6GB/s;XMC接口板主要包括电平转换、钟码延时、串并转换、DDR2、DDS、XMC、FPGA、电源等硬件模块;XMC接口板通过RapidIO协议与底板进行高速互联,完成实时信号处理;还介绍了高速串行总线的逻辑设计;论文设计方案支持双通道数据采集,每通道采集速率达到了1.2Gbps。
Against the data access speed I/O bottleneck problem in high--speed data acquisition system , a kind of data I/O access chan- nel based on high--speed serial bus is designed, its infrastructure of XMC backplane and XMC interface board is used by. XMC backplane u ses XMC to PCI--E adapter switch, which is a mature one in the market, to achieve communication between XMC backplane and host computer. Currently the PCI--E 8x transfer speed between computer and FPGA is 1.6GB / s. XMC interface board includes electrical level transfer, clock code delay, serial to parallel, DDR2, DDS, XMC, FPGA, power supply and other hardware modules, which high--speed interconnect with XMC backplane through RapidIO protocol, in order to complete real-- time signal processing. The logic design of high speed serial bus is also introduced. The design scheme supports dual--channel data acquisition, the sampling rate per channel achieves 1. 2Gbps.
出处
《计算机测量与控制》
CSCD
北大核心
2011年第12期3092-3095,共4页
Computer Measurement &Control
