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Priority arbiters

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3 Author(s)
Bystrov, A. ; Asynchronous Syst. Lab., Newcastle upon Tyne Univ., UK ; Kinniment, D.J. ; Yakovlev, A.

The paper presents asynchronous design solutions to the problem of Priority Arbitration which is defined in the following form. A system consists of multiple, physically concurrent, processes with a shared resource. The discipline of resource allocation is a function of parameters of the active requests, which are assigned to the requests either statically or dynamically. This function can be defined in an (arbitrary) combinatorial way (contrary to conventional, `topological', mappings, such as that used in a daisy-chain arbiter). The proposed designs are quasi-speed-independent. Furthermore, the priority logic, in the dynamic case, has the following architectural feature: it is a tree structure in which the control flow is maximally decoupled from the data-path by means of an early propagation of the `valid'-`invalid' signals, concurrently, with processing the priority data. This lends to significant reduction in the overall arbitration delay when the number of active requests is low

Published in:

Advanced Research in Asynchronous Circuits and Systems, 2000. (ASYNC 2000) Proceedings. Sixth International Symposium on

Date of Conference:

2000