Static timing analysis is a method of analyzing, debugging, and validating the timing performance of a design. You should be familiar with the timequest timing analyzer. Native sdc support for timing analysis of fpgabased designs abstract for details on the timequest timing analyzer. This part of the training introduces you to the timing analyzer graphical. The timing analyzer, part of the intel quartus prime software, is an easytouse tool for creating synopsys design constraints sdc files and for generating detailed timing reports to shorten the process of timing closure. Datasheet for quartus ii timequest timing analyzer cookbook on. Quartus prime software is the industrys number one software in performance and productivity for cpld, fpga and soc fpga. Quartus ii timequest timing analyzer cookbook quartus ii timequest timing analyzer cookbook software version. Timing analysis agenda timequest gui using timequest using timequest in the quartus ii flow. When you constrain clocks in the timing analyzer, the first rising or falling edge of a clock occurs at an absolute 0. January 2011 any information, product, or service described herein except as expressly agreed to in writing by altera corporation.
Multicycle hold the hold relationship is defined as the number of clock periods between the launch edge and the latch edge launch edge latch edge. Techonline is a leading source for reliable tech papers. Comparisons between xilinx ise software and altera quartus ii software. After a full placeandroute is performed, launch the timequest timing analyzer as described in step 4. This final part of the training discusses the sdc constraints required to fully constrain a design.
Quartus prime lets designers design for fpgas in whatever method is most convenient. The timing analyzer can be used to guide computeraided design tools in the implementation of logic circuits. A synopsys design constraints file is required by the timequest timing analyzer to get proper timing constraints. You will then analyze these designs to verify proper operation and performance. The timing analyzer, part of the intel quartus prime software, is an easytouse tool for creating synopsys design constraints sdc files. This section explains the basic principles of static timing analysis. Timing netlists and timing paths the timequest analyzer requires a timing ne tlist to perform timing analysis on any design. Citeseerx document details isaac councill, lee giles, pradeep teregowda. The timing analyzer in the quartus ii software is an asicstrength static timing analyzer that supports the industrystandard synopsys design constraints sdc format. The quartus ii software provides a path to enable you to run primetime on your quartus ii software designs, and export a netlist, timing constraints, and libraries to the primetime environment. For details on closing timing, run report timing closure recommendations in the timequest timing analyzer. Intel quartus prime pro edition handbook volume 1 cornell ece.
Constraining and analyzing sourcesynchronous interfaces ver 2. Quartus ii timequest timing analyzer cookbook this manual contains a collection of design scenarios, constraint guidelines, and recommendations. Designing for altera field programmable gate array devices. For more details on verifying designs for timing, please attend the course quartus ii software design series. In quartus prime timequest timing analyzer cookbook. The duty cycle of a clock can vary from design to design. The timequest timing analyzer is a tool that validates timing in all of your. Open and setup your design in the quartus ii software.
The timequest timing analyzer gui is a tool for making timing constraints and viewing the results of subsequent analysis. The reader is expected to have a basic understanding of the vhdl hardware description language, and to be familiar with the intel quartus prime cad software. To open the timequest analyzer gui, on the tools menu, click timequest timing analyzer. Verify timing in the timequest timing analyzer to obtain detailed timing analysis data on specific paths, view timing analysis results in the timequest timing analyzer. Introduction to the quartus ii manual columbia university. Unconstrained ports, port paths what to do with them. Timing analysis with time quest ii fpga design tool. Static timing analysis xilinx timing analyzer timequest timing analyzer. Launching the timequest timing analyzer quartus ii software gui command line on the tools menu, click timequest timing analyzer.
Learn the basics of setting up and generating timing reports with the timequest timing analyzer within the altera quartus ii software follow. Without any timing requirements, the presented solution is acceptable. In it, their recommend that, at the very least, all clock and io ports be constrained. Getting timing requirements not met as critical warning. A multicorner timing visualization feature in the timequest timing analyzer a logic depth report for early design analysis. To open the timequest analyzer gui from a system command prompt, type the following command. Chapter 7, best practices for the quartus ii timequest. Best practices for the quartus ii timequest timing. On newer devices, i think you have to run the fitter first all the time.
I am following an altera online course on their timing analyzer software called timequest. For every registertoregister path, the timequest timing analyzer calculates the hold slack for the path. However, you can change the duty cycle of a clock with the waveform option. Getting started with the timequest timing analyzer youtube. Yes the arrow should be going in the other direction and you are correct that the value i calculate is negative. In my fpga design, i am generating an output clock pin to an adc by muxing various clocks some generated internally. This part of the training introduces you to the basic timing analysis. Validating performance with the timequest static timing analyzer. I found that looking for help on timequest in paper form is quite hard, the manuals are all a bit fuzzy. The quartus ii timequest timing analyzer introduction the quartus ii timequest timing analyzer is a powerful asicstyle timing analysis tool that validates the timing performance of all logic in your design using an industrystandard constraint, analysis, and reporting methodology.
On older device families before the generation 10 devices, i believe, you can just synthesize your design, then manually select to create a postmap timing netlist in timequest. Timing analysis with time quest i fpga design tool. Verification may 2011 altera corporation table 61 describes timequest analyzer terminology. Datasheet for quartus ii timequest timing analyzer. You use fpga development tools to complete several example designs, including a custom processor.
Understanding timing analysis with the timequest analyzer quartus ii handbook version 11. It demonstrates how to set up timing constraints and obtain timing information for a logic circuit. Chapter 7, best practices for the quartus ii timequest timing analyzer. Native sdc support for timing analysis of fpgabased designs tech paper. This manual contains a collection of design scenarios, constraint guidelines, and recommendations. The timequest timing analyzer includes support for synopsis design constraints sdc. This manual contains a collection of design scenarios, constraint guidelines, and.
I used the examples from the timequest timing analyzer cookbook document with setting the delay value using an expression including board delays i. Datasheet for quartus ii timequest timing analyzer cookbook. You will also learn how to automate the process of constraining and. Quartus ii timequest timing analyzer cookbook 101 innovation drive san jose. This part of the training introduces you to the basic timing analysis concepts required. However, i stumbled over the altera video training on their webpage and it does give you quite a good overview how to constrain stuff, at least the stuff that needs to be constrained in every project. The timequest timing analyzer uses industrystandard synopsys design constraints, also using tcl syntax, that are contained in synopsys design constraints. Computing fmax is a basic function of a timing analyzer. As designs become more complex, advanced timing analysis capability requirements grow. Quartus ii timequest timing analyzer cookbook ver 1. Using the timequest timing analyzer, you will analyze the timing of your design. In the settings dialog box, click on the timequest timing analyzer category under timing analysis settings.
Quartus ii timequest timing analyzer and quartus ii classic timing. This part of the training introduces you to the timing analyzer graphical user interface and. Learn the basics of setting up and generating timing reports with the timequest timing analyzer within the altera quartus ii software follow intel. Quartus ii timequest timing analyzer cookbook manual. For example, the circuit in figure1shows an implementation of a 4input function using 2input and gates. Ndt cookbook internet2 software repository ndt is the network diagnostic tool, currently being modified for use with e2e pipes and the abilene measurement infrastructure. The timequest gui automatically opens the project open in the quartus ii software gui. You will write sdc files to constrain the more advanced types of interfaces and blocks used in todays fpga designs. You should be familiar with the timequest timing analyzer and the basics of synopsys design constraints sdc to properly apply these guidelines.
Using timequest timing analyzer for quartus prime 16. The timing analyzer, part of the intel quartus prime software, is an easyto use tool for creating synopsys design constraints sdc files. The default duty cycle for clocks created in the timing analyzer is 5050. Timequest timing analyzer quick start tutorial altera. Introduction the timequest timing analyzer is a po werful asicstyle timing analysis tool that validates the timing performance of all logic in a design using industry standard constraint, analysis, and reporting methodology. Quartus ii timequest timing analyzer chapter volume 3 of the quartus ii handbook.