Timing - Types of Relative Propagation Delay
Relative Propagation Delay describes the timing relationship between PinPairs.
There's three types of RelProp Timing in Constraint Manager.
CCS organizes RelProp Timing relationships into these three types of timing for you - Simple Match, Match with Target and Relative Timing.
Simple Match constrains to meet the Design Intent:
Match all Pin Pairs within 100 mils.
Simple with Target constrains to meet the Design Intent:
Match all Pin Pairs +/- 100 mils to the Clock.
CCS helps make this clear by defining by showing the Match Range and Tolerance for each type of timing.
This is shown in the constraint grid and visually in the VISUEYES Match Group Timing display.
Relative Timing can meet cpmplex timing Design Intent:
A positive Delta places the centerline to the right of the Target.
Anegative Delta places the centerline to the left of the Target.