Minimizing simultaneous switching noise (SSN) using modified odd/even bus invert method

K. S. Sainarayanan, J. Ravindra, M. Srinivas
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引用次数: 10

Abstract

In high speed digital circuits, the inductive effect is more dominant compared to capacitive effect. In particular, as the technology is shrinking, the spacing between interconnects becomes less which increases simultaneous switching noise (SSN) or M(di/dt) noise. So earlier methods proposed which concentrate on reducing capacitive effect do not hold good. This paper proposes a modified odd/even bus invert scheme, which reduces the simultaneous switching activity, thereby improving the signal integrity. The performance of the proposed coding scheme has been tested on various benchmarks and it is found that SSN or M(di/dt) is reduced by 28% compared to data transmitted unencoded. The proposed codec has been designed and it has been found that power overhead is 3.3%.
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利用改进的奇/偶总线逆变法最小化同时开关噪声(SSN)
在高速数字电路中,感应效应比电容效应更重要。特别是,随着技术的缩小,互连之间的间距变得更小,这增加了同时开关噪声(SSN)或M(di/dt)噪声。因此,先前提出的集中于降低电容效应的方法并不适用。本文提出了一种改进的奇偶总线反相方案,该方案减少了同时开关活动,从而提高了信号的完整性。所提出的编码方案的性能已经在各种基准测试中进行了测试,发现SSN或M(di/dt)与未编码传输的数据相比降低了28%。对所提出的编解码器进行了设计,发现其功耗开销为3.3%。
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