Retiming and resynthesis: optimizing sequential networks withcombinational techniques
Malik, S.; Sentovich, E.M.; Brayton, R.K.; Sangiovanni-Vincentelli, A.
Computer-Aided Design of Integrated Circuits and Systems, IEEE Transactions on
Volume 10, Issue 1, Jan 1991 Page(s):74 - 84
Digital Object Identifier 10.1109/43.62793
Summary:Sequential networks contain combinational logic blocks separated
by registers. Application of combinational logic minimization techniques
to the separate logic block results in improvement that is restricted by
the placement of the registers; information about logical dependencies
between blocks separated by registers is not utilized. Temporarily
moving all the registers to the periphery of a network provides the
combinational logic minimization tools with a global view of the logic.
A technique is proposed for optimizing a sequential network by moving
the registers to the boundary of the network using an extension of
retiming, resynthesizing the combinational logic between the registers
using existing logic minimization techniques, and replacing the
registers throughout the network using retiming algorithms
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