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Altera_Forum's avatar
Altera_Forum
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13 years ago

combinational logic path timerequest slack

Hi, I encounter a time slack problem. In timequest i find the path between two registers is two long ,there are too many levels of combintional logic .so i locate the path in the technology map...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
13 years ago

One thing you might try is to add a pipeline register back-to-back with one of the registers in the path (with nothing in between), and then turn on Register Retiming, one of the features of Physical Synthesis (under Settings -> Compilation Process Settings). The tool will then move one of the registers into the combinatorial logic path if it is possible.