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Hierarchical synthesis of complex DSP functions on FPGAs

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3 Author(s)
Yi, Y. ; Programmable Syst. Lab., Queen''s Univ., Belfast, UK ; Woods, R. ; McCanny, J.V.

SoC systems are now being increasingly constructed using a hierarchy of subsystems or silicon intellectual property (IP) cores. The key challenge is to use these cores in a highly efficient manner which can be difficult as the internal core structure may not be known. A design methodology based on synthesizing hierarchical circuit descriptions is presented. The paper employs the MARS synthesis scheduling algorithm within the existing IRIS synthesis flow and details how it can be enhanced to allow for design exploration of IP cores. It is shown that by accessing parameterised expressions for the datapath latencies in the cores, highly efficient FPGA solutions can be achieved. Hardware sharing at both the hierarchical and flattened levels is explored for a normalized lattice filter and results are presented.

Published in:

Signals, Systems and Computers, 2004. Conference Record of the Thirty-Seventh Asilomar Conference on  (Volume:2 )

Date of Conference:

9-12 Nov. 2003