Answers Database

M1.3, PAR, baspw, Error: baspw:97 PAR: Not all timing constraints could be satisfied.


Record #3260

Product Family:  Software

Product Line:  Merged Core

Problem Title:
M1.3, PAR, baspw, Error: baspw:97 PAR: Not all timing constraints could
be satisfied.



Problem Description:
Keywords:  M1.3, Par, baspw, ,timing, constraints, ucf, Error.

Urgency:   Standard

General Description:
An error may be generated by PAR when timing constraints are too strict. The err
or is:

Error: baspw:97 PAR: Not all timing constraints could be satisfied.


Solution 1:

This occurs when the logic delays are greater than the timing constraints. PAR t
ries to Place and Route the design in such a way that it can meet the timing con
straints. However, when the delays through the logic are greater than the constr
aint on the logic (too many levels of logic or too tight of a constraint), PAR r
ealizes that the logic delays (pre-route) exceed the constraints and stops. This
 is to save time since there is no possible way to meet the constraints.

Workaround:
Increase the timing constraint or reduce the levels of logic.



End of Record #3260