On the Approximation of Accuracy-configurable Sequential Multipliers via Segmented Carry Chains

Autor:	Echavarria, Jorge, Wildermann, Stefan, Keszocze, Oliver, Khosravi, Faramarz, Becher, Andreas, Teich, Jürgen
Rok vydání:	2021
Předmět:	Computer Science - Hardware Architecture
Druh dokumentu:	Working Paper
Popis:	In this paper, we present a multiplier based on a sequence of approximated accumulations. According to a given splitting point of the carry chains, the technique herein introduced allows varying the quality of the accumulations and, consequently, the overall product. Our approximate multiplier trades-off accuracy for a reduced latency (with respect to an accurate sequential multiplier) and exploits the inherent area savings of sequential over combinatorial approaches. We implemented multiple versions with different bit-width and accuracy configurations, targeting an FPGA and a 45nm ASIC to estimate resources, power consumption, and latency. We also present two error analyses of the proposed design based on closed-form analysis and simulations. Comment: 7 pages
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2105.05588 Zobrazit plný text záznamu View this record from Arxiv