Issue link: https://resources.pcb.cadence.com/i/1532920
6. Choose the ECS1 Constraint Set we recently made and apply it to any differential pair, say to the DP_DATA1 diff pair. 7. Then the values will appear on the relevant columns (see below). 8. Notice that from the analysis (you can right click the DP_DATA1 field then choose Analyze) that our traces are within target tolerances. Meaning of the Parameters: Implement specific rules for differential pairs to ensure optimal signal propagation. This includes: f Dynamic phase tolerance: Allow for slight variations in differential pair length matching to account for manufacturing tolerances. Ensuring that this remains as close to 0 as possible, reduces the common mode voltage that can be created by slightly mismatched signals - intra pair skew. f Static phase control: Set strict length matching requirements to minimize skew between the positive and negative signals. Some signals do not have to be matched instantaneously, but their data must arrive at the receiver at the same time. f Maximum uncoupled length: Specify the maximum length that differential pair traces can be routed separately before recoupling. Being uncoupled allows for the introduction of unevenly distributed noise among diff pair traces, which can cause the differential receiver to have a harder time canceling the signal noise. Impact: The signals propagating through the differential pairs are in sync in real time and at the receiver. Proper control over the traces for in sync signal behavior reduces noise created from common mode voltages and improves signal timing for high-speed data transmission. 15 www.cadence.com OrCAD X Constraint Management Guide