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以现场可编程门阵列(FPGA)内嵌的吉比特收发器RocketIO为物理层,提出了两种高速数据通信的应用模型——基于标准协议的可靠通信模型和基于自定义协议的实时传输模型,并对二者做了简要的分析和比较。利用RocketIO内建的时钟数据恢复、8B/10B编解码以及串化解串电路等实现嵌入式时钟下芯片间或板卡间的高速串行数据自同步传输,克服了系统同步和源同步方式下对时钟抖动要求严格、传输速率受限等种种不足,使单通道线速率达到3.0Gb/s以上,并可保证低功耗、低误码率甚至无误码传输。
In this paper, two kinds of application models of high-speed data communication are put forward, which are the reliable communication model based on standard protocol and the real-time transmission model based on self-defined protocol, using RocketIO, a gigabit transceiver embedded in field programmable gate array (FPGA) And made a brief analysis and comparison of the two. By using RocketIO’s built-in clock data recovery, 8B / 10B codec and serializer and deserializer circuit to realize high-speed serial data self-synchronous transmission between chips or boards under embedded clock, Jitter strict requirements, limited transmission rate and other shortcomings, the single-channel line rate of 3.0Gb / s or more, and can guarantee low power consumption, low bit error rate and even error-free transmission.