Globally Asynchronous Locally Synchronous (GALS) Microprogrammed Parallel FIR Filter

A Design Path for Design of GALS Based Communication Systems

The GALS (Globally Asynchronous Locally Synchronous) approach is highly suitable for implementation of communication systems. In this paper we describe an efficient design flow for GALS design based on commercial tools. As design example we have selected a digital FIR filter. It is a nontrivial task to develop an efficient design flow for GALS based systems because of the asynchronous parts. Bo...

Scheduling globally asynchronous locally synchronous systems for guaranteed response times

This paper analyzes and schedules Globally Asynchronous Locally Synchronous (GALS) programs to bound response times to input events. The proposed approach is applicable to scheduling of GALS programs for different target architectures with single or multiple processors or cores. A Satisfiability Modulo Theoretical (SMT) formulation in the quantifier free linear real arithmetic (QF LRA) logic is...

Globally Asynchronous Locally Synchronous (GALS) Interface

Globally Asynchronous Locally Synchronous FPGA Architectures

Globally Asynchronous Locally Synchronous (GALS) Systems have provoked renewed interest over recent years as they have the potential to combine the benefits of asynchronous and synchronous design paradigms. It has been applied to ASICs, but not yet applied to FPGAs. In this paper we propose applying GALS techniques to FPGAs in order to overcome the limitation on timing imposed by slow routing.

Asynchronous Behavior Related Retiming in Gated-Clock GALS Systems

Although retiming is a well known method to optimize various characteristics of synchronous circuits, this method has rarely been applied to the synchronous blocks of a Globally Asynchronous Locally Synchronous (GALS) system. In this paper, communication protocols of gated-clock based wrappers have been analyzed for applying retiming algorithm to improve performance. Through the introduction of...