Abstract
ABSTRACT This paper deals with one of the potential applications of multiple-valued logic (MVL) for low-power data transmission by ternary limited-weight codes (LWCs) and quaternary transition signalling (TS). It aims for a reduction in power, delay, and crosstalk noise. Crosstalk effects cause serious problems such as long propagation delay and high power consumption for intermediate and global wires inside a chip. This paper conducts an analytical investigation into an optimal situation. In order to analyse the effects of crosstalk and delay, communication delay types are classified based on the quaternary TS. The classification is particularly given for quaternary TS to make the mathematical analysis possible. In addition, this paper considers the reduction of bus delay, dynamic power, and crosstalk noise at the same time. Our mathematical analyses reveal that a set of 16 5-digit ternary LWC codewords with the maximum weight of two is the optimal solution. The MVL bus encoding decreases the switching activity and the average voltage swing by 37.5% and 58.27%, respectively. Furthermore, the quaternary TS method can reduce the dynamic power by up to 89.12%compared to when binary-level signalling (LS) is used. Finally, the proposed model reduces the effects of crosstalk noise because it eliminates rail-to-rail transitions.
Published Version
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