Crosstalk Free Coding Systems to Protect NoC Channels against Crosstalk Faults
Crosstalk Free Coding Systems to Protect NoC Channels against Crosstalk Faults
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DOI：
10.1109/iccd.2017.66
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发表时间：
2017-11
期刊：
影响因子：
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通讯作者：
K. Soleimani;A. Patooghy;N. Soltani;Lake Bu;Michel A. Kinsy
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作者：
K. Soleimani;A. Patooghy;N. Soltani;Lake Bu;Michel A. Kinsy
现代多核和众核芯片的可靠性与其片上网络的可靠性密切相关。当前片上网络（NoC）中的通信信道极易受到串扰故障的影响。在这项工作中，我们提出了一套规则，用于生成无串扰编码系统的类，以保护NoCs中的通信信道免受串扰故障。通过这些规则生成的码字没有“101”和“010”位模式，这是NoC通信信道中串扰故障的主要来源。拟议的规则确定：（1）编码系统中不同比特位置的权重以达到无串扰编码，以及（2）编码如何在NoC中被利用以防止NoC信道中产生比特模式的串扰。使用所提出的规则集，设计者可以获得编码系统是串扰自由的任何宽度的通信信道。与传统的禁止模式自由（FPF）系统相比，所提出的方法是能够提供唯一的表示，任何输入值的码字长度的下限。分析表明，所提出的规则，沿着与建议的编码/解码机制，是有效的，防止禁止模式编码系统的任何任意信道宽度的片上网络。
Reliability of modern multicore and many-core chips is tightly coupled with the reliability of their on-chip networks. Communication channels in current Network-on-Chips (NoCs) are extremely susceptible to crosstalk faults. In this work, we propose a set of rules for generating classes of crosstalk free coding systems to protect communication channels in NoCs against crosstalk faults. Codewords generated through these rules are free of '101' and '010' bit patterns, which are the main sources of crosstalk faults in NoC communication channels. The proposed rules determine: (1) the weights of different bit positions in a coding system to reach crosstalk free codings, and (2) how the coding might be utilized in an NoC to prevent crosstalk generating bit patterns in NoC channels. Using the proposed set of rules, designers can obtain coding systems which are crosstalk free for any widths of communication channels. Compared to conventional Forbidden Pattern Free (FPF) systems, the proposed methodology is able to provide unique representation to any input values at the lower bound of the codeword lengths. Analyses show that the proposed rules, along with the proposed encoding/decoding mechanisms, are effective in preventing forbidden pattern coding systems for network-on-chips of any arbitrary channel width.