Timing Analysis Messages

The software may issue the following messages during timing analysis.

CannotDeriveGeneratedClockFromSpecifiedSourcePin (True)

Message Error in generated clock {} : cannot derive master clock from the specified source pin
Decsription The Timer cannot find a generated clock from the specified source pin. Check your SDC constraints.

CannotFindSpecifiedMasterClock (Warning)

Message Clock {} is specified as the master clock for generated clock {} but it is not present in the fanin of the clock target. The fanin contains the following clocks: {}
Decsription The Timer cannot find specified master clock from timing netlist. Check your SDC constraints.

CannotTraceBackToMasterClock (Warning)

Message Could not trace back to master clock from target pin {}. Will assume zero latency on derived clock {}
Decsription Timer cannot trace back to master clock from target pin.

ClockPeriodIsTooLarge (Warning)

Message The clock period of {} is too large. Set to maximum clock period (0.5ms)
Decsription The maximum clock period for the Timer is 0.5 ms. Reduce the clock period.

ClockPeriodIsTooSmall (Warning)

Message The clock period of {} is too small. Set to minimum clock period (1ps)
Decsription The minimum clock period for the Timer is 1 ps. Increase the clock period.

CombinationalLoopDetected (Warning)

Message Timer cuts a combinational loop at the {}
Decsription The software detected a combinational loop in the timing netlist. The Timer is cutting the edge an arbitrary point.

IgnoreThruClockPinInException (Warning)

Message When specifying exceptions, the -through cannot contain clocks. Ignoring the -through clock spec for this exception
Decsription When specifying exceptions with SDC constraints, the -through option cannot contain clocks. Ignoring the -through clock specification for this exception. Please check your SDC constraints.

MissingNetInQDelay (Warning)

Message Missing net on cell: {} port: {} in precomputed delay
Decsription Missing net in precomputed delay.

TooManyExceptionsAreInputted (Warning)

Message Too many exceptions found, which will slow down timing analysis. Please check your SDC constraints
Decsription If you have too many exceptions in your SDC file, the Timer will take longer to perform analysis. Update your SDC constraints to remove some exceptions.