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2.3.1. Recommended Initial SDC Constraints
2.3.2. SDC File Precedence
2.3.3. Iterative Constraint Modification
2.3.4. Creating Clocks and Clock Constraints
2.3.5. Creating I/O Constraints
2.3.6. Creating Delay and Skew Constraints
2.3.7. Creating Timing Exceptions
2.3.8. Example Circuit and SDC File
2.3.7.5.1. Default Multicycle Analysis
2.3.7.5.2. End Multicycle Setup = 2 and End Multicycle Hold = 0
2.3.7.5.3. End Multicycle Setup = 2 and End Multicycle Hold = 1
2.3.7.5.4. Same Frequency Clocks with Destination Clock Offset
2.3.7.5.5. Destination Clock Frequency is a Multiple of the Source Clock Frequency
2.3.7.5.6. Destination Clock Frequency is a Multiple of the Source Clock Frequency with an Offset
2.3.7.5.7. Source Clock Frequency is a Multiple of the Destination Clock Frequency
2.3.7.5.8. Source Clock Frequency is a Multiple of the Destination Clock Frequency with an Offset
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2.4. Timing Analyzer Tcl Commands
You can optionally use Tcl commands from the Intel® Quartus® Prime software Tcl Application Programming Interface (API) to constrain, analyze, and collect timing information for your design. This section describes running the Timing Analyzer and setting constraints using Tcl commands. You can alternatively perform these same functions in the Timing Analyzer GUI. Tcl .sdc extensions provide additional methods for controlling timing analysis and reporting. The following Tcl packages support the Tcl timing analysis commands this chapter describes:
- ::quartus::sta
- ::quartus::sdc
- ::quartus::sdc_ext