Intel® Quartus® Prime Standard Edition User Guide: PCB Design Tools

ID 683619
Date 9/24/2018
Document Table of Contents

1.2. Definitions

The terminology used in this chapter includes the following terms:

  • Aggressor: An output or bidirectional signal that contributes to the noise for a victim I/O pin
  • PDN: Power distribution network
  • QH: Quiet high signal level on a pin
  • QHN: Quiet high noise on a pin, measured in volts
  • QL: Quiet low signal level on a pin
  • QLN: Quiet low noise on a pin, measured in volts
  • SI: Signal integrity (a superset of SSN, covering all noise sources)
  • SSN: Simultaneous switching noise
  • SSO: Simultaneous switching output (which are either the output or bidirectional pins)
  • Victim: An input, output, or bidirectional pin that is analyzed during SSN analysis. During SSN analysis, each pin is analyzed as a victim. If a pin is an output or bidirectional pin, the same pin acts as an aggressor signal for other pins.