The Report Summary section reports all the set_bus_skew
constraints defined in the design. The following information is reported for each constraint:
- Id: constraint Id referred later in the report (makes it easier to search for that constraint inside the report).
- From: pattern provided for the
set_bus_skew -from
option. - To: pattern provided for the
set_bus_skew -to
option. - Corner: corner (Slow or Fast) in which the worst bus skew was computed.
- Requirement: bus skew target value.
- Actual: worst bus skew computed across all the paths covered by the constraint.
- Slack: difference between the worst bus skew and the constraint requirement.
In the following example, the design has only one bus skew constraint with a 1 ns requirement. The worst skew among all the paths covered by the constraint is 1.107 ns.
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