Intel® Quartus® Prime Standard Edition User Guide: Timing Analyzer

ID 683068
Date 2/21/2024
Public
Document Table of Contents

2.3.7.5.1. Default Multicycle Analysis

By default, the Timing Analyzer performs a single-cycle analysis to determine the setup and hold checks. Also, by default, the Timing Analyzer sets the end multicycle setup assignment value to one and the end multicycle hold assignment value to zero.

The source and the destination timing waveform for the source register and destination register, respectively where HC1 and HC2 are hold checks 1 and 2 and SC is the setup check.

Figure 62. Default Timing Diagram
Figure 63. Setup Check Calculation

The most restrictive setup relationship with the default single-cycle analysis, that is, a setup relationship with an end multicycle setup assignment of one, is 10 ns.

The setup report for the default setup in the Timing Analyzer with the launch and latch edges highlighted.

Figure 64. Setup Report
Figure 65. Hold Check Calculation

The most restrictive hold relationship with the default single-cycle analysis, that a hold relationship with an end multicycle hold assignment of zero, is 0 ns.

The hold report for the default setup in the Timing Analyzer with the launch and latch edges highlighted.

Figure 66. Hold Report