In general, you want to enable all Electrical, Physical and Spacing Constraints when working with high-speed constraints and
boards. Note that these can affect performance if routing large complex boards with many layers.
Signal Integrity
In this section we will address the most common rules you should set for signal integrity in the PCB. We are using a different
reference design for the PCB Layout, but the principles are the same.
Impedance Control: Specification for controlled impedance traces for high-speed signals
Diagram showing a PCB copper wire with signal propagation
Purpose: Impedance control is used to specify and maintain consistent characteristic impedance for high-speed signal traces
throughout the PCB.
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OrCAD X High-Speed Digital Design Guide
