Reducing the overhead of dynamic partial reconfiguration for multi-mode circuits
2014
A multi-mode circuit implements the functionality of a limited number of circuits, called modes, of which at any given time only one needs to be realised. Using dynamic partial reconfiguration of an FPGA, all the modes can be implemented on the same reconfigurable region, requiring only an area that can contain the biggest mode. This can save considerable chip area. Conventional dynamic partial reconfiguration techniques generate a configuration for every mode separately. As a result, to switch between modes the complete reconfigurable region is rewritten, which often leads to long reconfiguration times. In this paper we give an overview of research we conducted to reduce this overhead of dynamic partial reconfiguration for multi-mode circuits. In this research we explored several joint optimization strategies at different stages of the tool flow.
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