Reconfigurable current-mode multiple-valued residue arithmetic circuits

This paper presents new reconfigurable multiple-valued residue arithmetic circuits, in which multiplication and addition can be performed alternatively. In order to construct the reconfigurable arithmetic circuits, we develop shifting-based hardware algorithms for both mod m/sub i/ multipliers and mod m/sub i/ adders. The proposed algorithms utilize three-valued one-hot coding for the representation of each residue digit effectively. By the coding, mod m/sub i/ multiplication can be simply performed by a shift operation and sign inversion. In mod m addition, the operation is decomposed into several operations, which include an inverse operation, two multiplications and an increment operation. It is demonstrated that the proposed hardware algorithms of residue arithmetic are useful to implement the reconfigurable current-mode multiple-valued residue arithmetic circuits, which are comparable to the conventional ones.