On-line hardware implementation for complex exponential and logarithm

A. Skaf (1) , J.-M. Mullar (1) , A. Guyot (1)

1 TIMA - Techniques de l'Informatique et de la Microélectronique pour l'Architecture des systèmes intégrés

This work reports on an on-line arithmetic co-processor that implements a novel algorithm derived from CORDIC. This algorithm, known as BKM, was adapted for on-line arithmetic use. A 16 SDB VLSI implementation is also discussed. The obtained circuit might be considered as the first on-line arithmetic co-processor. As a matter of fact, the BKM algorithm gives, depending on its functioning mode, complex exponential or logarithm functions. All basic mathematical operations can hence be computed. The chip was designed using a specific on-line cell library, some full-custom parts and a generated decision and control section.

Mots clés: on-line-hardware-implementation; complex-exponential-function; logarithm-function; on-line-arithmetic-co-processor; CORDIC-based-algorithm; BKM-algorithm; SDB-VLSI-implementation; BKM-function-mode; mathematical-operation-computation; on-line-cell-library; custom-parts; decision-control-section; CMOS-double-metal-single-polysilicon-technology; 16-bit

Domaines: Micro et nanotechnologies/Microélectronique

A. Skaf, J.-M. Mullar, A. Guyot. On-line hardware implementation for complex exponential and logarithm. ESSCIRC-'94.-Twentieth-European-Solid-State-Circuits-Conference.-Proceedings., 1994, Ulm, Germany. pp.252-5. ⟨hal-00014939⟩