Answers Database


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


Record #3260

Product Family: Software

Product Line: FPGA Implementation

Product Part: par

Product Version: 1.3

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


Problem Description:

Urgency:   Standard

General Description:
An error may be generated by PAR when timing constraints are too strict. The error 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 tries to Place and Ro ute the design in such a way that it can meet the timing constraints. However, when the delays throu gh the logic are greater than the constraint on the logic (too many levels of logic or too tight of a constraint), PAR realizes 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 - Last Modified: 04/30/99 08:52

For the latest news, design tips, and patch information on the Xilinx design environment, check out the Technical Tips!