一种新型的10G以太网并行循环冗余校验设计

发布时间：2018-02-25 00:14

  本文关键词： 循环冗余校验 G以太网 并行 循环冗余校验魔数 门延时 逻辑资源　出处：《计算机工程》2016年05期 　论文类型：期刊论文

【摘要】：现有10G以太网中的循环冗余校验(CRC)编译码器不能同时兼顾计算速度与资源占用,为此,设计一种新型的10G以太网并行CRC编译码器。编码时,通过编码预处理解决不定长字节带来的CRC编码问题,简化CRC编码电路的设计。译码时,通过译码预处理分离出以太网帧的帧校验序列(FCS)域,恢复编码预处理模块输出的数据,简化CRC校验电路的设计。在实现CRC编码校验时对传统的异或运算电路进行优化,降低运算电路门延时,提高运算速度,并能自动切换CRC编码校验方法以兼容现有以太网。实验结果表明,与其他3种方法相比,该方法占用逻辑资源少,计算速度快,可实现实时性输出,同时满足10G以太网156.25 MHz的时序要求。
[Abstract]:In the present 10G Ethernet, the cyclic redundancy check (CRC) encoder and decoder can not take into account the computation speed and the resource occupation simultaneously. Therefore, a new 10G Ethernet parallel CRC encoder and decoder is designed. In order to simplify the design of the CRC coding circuit, the CRC coding problem caused by the constant length bytes is solved by the encoding preprocessing. In decoding, the frame check sequence (FCS) domain of the Ethernet frame is separated by the decoding preprocessing, and the output data of the encoding preprocessing module is recovered. To simplify the design of CRC check circuit, optimize the traditional XOR operation circuit when realizing CRC code check, reduce the delay of operation circuit gate, and improve the operation speed. It can automatically switch the CRC coding verification method to compatible with the existing Ethernet. The experimental results show that compared with the other three methods, the proposed method takes less logical resources, has the advantages of fast computing speed, and can realize the real-time output. At the same time, it meets the timing requirement of 10G Ethernet 156.25 MHz.
【作者单位】： 暨南大学信息科学技术学院;
【基金】：广东省科技计划基金资助项目(2013B090800022) 广东省工程技术研究中心基金资助项目(2012gczxA003)
【分类号】：TP393.11
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本文编号：1532279