A Design Methodology for Very Large Array Processors-Part 2: Pacube Vlsi Arrays

Abstract

The types of functional VLSI chips needed for general and special purpose (computationally intensive) applications are wide ranging, Hence, to reduce the turn-around time of these VLSI chips, mask/field programmable PLAs, gate arrays SLAs and FPGAs are available. However these VLSI arrays are unsuitable for designing ultrahigh performance special purpose VLSI chips. There is a strong need for developing a suitable mask programmable VLSI structures exclusively for designing ultrahigh performance and cost-effective special purpose systems. For this purpose, a macro cell based mask programmable Pacube (PA3—Programmable Array of Array Adders) VLSI array is proposed in this paper. These arrays can be mask programmed for building cost-effective super computing VLSI functional units. Another important feature is the architecture of the macro-cell, which is designed in such a way that the functional units corresponding to the G-set equations when mapped on the macro-cell arrays possess identical data flow control. This leads to a highly simplified control design for executing complex computations.

Recursive Gabor transform for images of very large size and design of massively parallel architecture

“…Hence as presented in [4] Functional Communication Graph (FCG) for RGGT can be obtained with the help of G-set functions. fig.la, The block diagram of Pacube macrocell architecture is shown in fig.2.…”

“…These G-set functions are evaluated by the method of massive bit array formation and array reduction (addition process) [4]. Massive bit array is partitioned into column domains.…”

“…In this section we present a brief discussion of Generalized Gabor Transform (GGT) [l-31 and Pacube VLSI arrays [4]. Signal processing applications demand a high degree of complex computations.…”

“…However these VLSI arrays are unsuitable for designing ultrahigh performance special purpose VLSI chips. For this purpose a macrocell based maskprogrammable Pacube (Programmable Array of Array Adders) VLSI array is proposed in [4]. These m a y s can be maskprogrammed for building cost-effective supercomputing VLSI functional units.…”