Nontimingdriven mode produces a solution quickly, without consideration of. For the love of physics walter lewin may 16, 2011 duration. Synthesis and simulation with alteras quartus ii software. Quartus ii integrated synthesis university of washington. Running a fast synthesis produces a netlist that is slightly harder for the fitter to route, thus making the overall fitting process slower, which negates any performance increases achieved as a result of the fast synthesis. In addition, synthesis tools can use the timing information to focus on timing driven optimizations and improve the quality of results. Timing optimization options optimization options, synthesis options, timing driven synthesis, wysiwig re synthesis, physical synthesis, re timing, register duplication. The precision synthesis software performs timingdriven io register mapping by default. In the tool name list, specify simulation tool as modelsim. Quartus prime enables analysis and synthesis of hdl designs, which enables the developer to compile their designs, perform timing analysis, examine rtl diagrams, simulate a designs reaction to different.
Non timing driven mode produces a solution quickly, without consideration of design performance. Registers and drive the highest performance in intel stratix 10 and. The intel quartus prime software is revolutionary in performance and. Validating performance with the timequest static timing analyzer. Methodology and applications of timingdriven logic. The flow uses alteras quartus ii fpga cad software to perform hdl synthesis and a conversion tool to translate the result into the academic berkeley logic interchange format blif. 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. An i o pin driving the external clock should be indicated as a safety pin. In the quartus software, in the processing menu, point to start and click start analysis and synthesis. Runtimeconscious automatic timingdriven fpga layout. Quartus ii software for windows is available for free from the following website. Layout tools for fpgas can typically be run in two different modes. The quartus ii design and compilation flow using quartus ii integrated synthesis is made up of the following steps.
Using timing analysis in the quartus ii software january 2001, ver. The compile time advantages in the latest release are driven by more efficient place and route algorithms, improved multiprocessor support and faster timingdriven synthesis. The disclosed timing driven logic resynthesis technique can be applied at various design stages. Operate in a selfcontained environment design entry design compilation logic synthesis and fitting graphic design entry megafunctions text design entry hierarchical design entry timing simulation functional simulation timing analysis device programming. Citeseerx document details isaac councill, lee giles, pradeep teregowda. The precision tm rtl synthesis timingdriven synthesis engine supports detailed timing constraints such as clock characteristics and timing exceptions. May 15, 2007 aspects of the present invention provide a solution for the timing driven logic resynthesis or timing optimization problem, which provides for much more efficient logic synthesis with improved results as compared to conventional synthesis techniques. The compiler supports a variety of highlevel, hdl, and schematic design entry methods. The lite edition is a free version of quartus prime that can be downloaded for. In addition, synthesis tools can use the timing information to focus on timingdriven optimizations and improve the quality of results. The feature is available only for the timequest timing analyzer and supports arria ii.
The quartus prime standard edition handbook verification explains the types of analysis that timequest runs. However, when the variables are inputs, it finds the logic and routing time for the circuit. Intel hls compiler is included in the intel quartus prime design software installation. Once you have installed the quartus prime verilogsystemverilog compiler and the modelsim logic simulator software from the software downloads page, this tutorial will help you use these two programs to write, compile, and execute your projects. To generate the netlist, turn on the generate a synthesis area and timing estimation. The intel quartus prime standard edition software includes extensive support for earlier device families. Static timing analysis is a method of analyzing, debugging and validating the timing performance of a design. Intel quartus prime standard edition user guide thirdparty. In the category list, select simulation under eda tool settings.
Quartus ii integrated synthesis includes advanced synthesis options and compiler directives to guide the. Introduction to quartus ii manual georgia institute of. I am interested in these metrics for a circuit created for fixed inputs. Quartus does a timing analysis for all your designs to make sure the propagation delays in your combinational logic do not exceed the period of the clock signal you are using. The timingdriven synthesis logic option impacts the following optimization. The intel quartus prime pro edition software supports the advanced features in intels nextgeneration fpgas and socs with the intel agilex, intel stratix 10, intel arria 10, and intel cyclone 10 gx device families. Mar 04, 2018 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. Also, fitter information can be used for more efficient synthesis. May 12, 2017 pccp120 digital electronics lab quartus ii functional and timing simulation. The timequest timing analyser is quartus primes timing verification tool. Also quartus has the capability to perform physical synthesis optimizations as part of the fitting process, whose benefits cannot be estimated by the hdl synthesis tool.
Quartus prime enables analysis and synthesis of hdl designs, which. This is done to account for the worst case scenario. This paper studies the difficulty of predicting interconnect delay in an industrial setting. For more details on verifying designs for timing, please attend the course quartus ii software design series. Running a fast synthesis produces a netlist that is slightly harder for the fitter to route, thus making the overall fitting process slower, which negates any performance increases achieved as. In this assignment, you will learn to use alteras quartus software to build a configuration file that you can download from the pc to. Settings and settings file specifications for the quartus ii assembler, signaltap ii logic analyzer. Timing driven synthesis increases performance of your design by performing synthesis while keeping timing constraints in mind. Get oriented with the intel quartus prime software interactive tutorial. Quartus prime download, with three intel quartus prime software editions to meet specific fpga system design requirements. The de1 prototyping kits are circuit boards with an altera field programmable logic array fpga chip that is connected to several switches, buttons, leds light emitting diodes, sevensegment displays, clocks, memories, audio io, and video output devices. Timingdriven synthesis increases performance of your design by performing synthesis while keeping timing constraints in mind. In this tutorial, we will show the difference between functional simulation and timing simulation. Designing with quartus prime advanced timing analysis day 4 part i sdc reminders and use of tcl for.
Create a project in the quartus ii software, and specify the general project information, including the toplevel design entity name. Synopsys synplify pro synthesis tools are fully integrated with lattices ice cube2 development. The area report file includes post synthesis device resource utilization statistics that can differ from the resource usage after placeandroute. Figure 1 shows the quartus ii timing closure flow diagram. Timequest requires information about connections and devices from synopsis design constraint sdc file. Fifty industrial circuits, alteras quartus ii cad software, and alteras stratix and stratix ii fpga architectures were used in the study. Download the free intel quartus prime lite edition software quartus. We show that there is a large amount of inherent randomness in a stateoftheart. The timing results shown in the examples in this tutorial were obtained using quartus ii version 5. Performing equivalent timing analysis between the altera. Learn to use some of the features available in the quartus ii software for timing closure.
Learn to use the physical synthesis optimizations effectively. Finally, we examine the beneflts of using the simple timing model in a timing driven physical synthesis. Synthesis and simulation with alteras quartus ii software this tutorial introduces you to quartus ii, a commercial software for synthesis and simulation of digital circuits, from altera, one of the leading pldfpg manufacturers. The intel quartus prime nativelink feature allows timing constraints that are applied in the synplify software to be forwardannotated for the intel quartus prime software with an. We show that there is a large amount of inherent randomness in a stateoftheart fpga placement algorithm.
Highlevel design html reports are automatically generated during the simulation stage lets users see. The precision synthesis software performs timingdriven io register. Difficulty of predicting interconnect delay in a timing. Intel quartus prime integrated synthesis design and compilation flow. To see the effects of propagation delay in the circuit. Optimization options, synthesis options, timing driven synthesis, wysiwig resynthesis. However, when i generate the post synthesis simulation model, the synthesis report does not show any timing analysis. During synthesis, the compiler may change or remove user logic and design nodes. The quartus ii timing closure flow also offers more control over the synthesis and placeandroute fitting steps. The timequest timing analyzer in the altera quartus ii software is a powerful asicstyle static timing analysis tool that validates fpga timing performance using synopsys design constraints. However, when i generate the postsynthesis simulation model, the synthesis report does not show any timing analysis. Altera corporation performing equivalent timing analysis between the altera quartus ii software and xilinx ise 3 the quartus ii software adds the microtiming clocktoout t co delay of the registered clock as part of the clock skew and reduces the registertoregister maximum frequency. The area report file includes postsynthesis device resource utilization statistics that can differ from the resource usage after placeandroute. Even if timing driven synthesis is disabled, the quartus ii software may attempt to initialize the timing netlist if other options such as register retiming are enabled.
Gx, arria gx, stratix series except stratix devices and cyclone series except. Intel quartus prime is programmable logic device design software produced by intel. Timing driven place and route xilinx invented timingdriven place and route for programmable logic. Design entry download cables video technical documents other resources altera development. Runtimeconscious automatic timingdriven fpga layout synthesis. Intel quartus prime synthesis minimizes gate count, removes redundant logic, and ensures efficient use of device resources.
Running the intel quartus prime software manually with the synplify. Intel quartus prime standard edition user guide design. Intel quartus prime pro edition user guide thirdparty synthesis. The quartus prime design flow part iv fpga downloading. You can force a register to the device io element ioe using the complex. Timing driven synthesis utilizes timing constraints to recognize critical paths uses timing models to effectively. Altera recommends setting this option to fast only when running an early timing estimate. Intel quartus prime download intel quartus prime software. Altera continues its 2x to 3x compile time advantage with. Timing closure using quartus ii physical synthesis optimizations. Designing with intel quartus prime essentials doulos. Aspects of the present invention include a methodology for the general timingdriven iterative refinementbased approach, a timingdriven optimization tdo method that optimizes the circuit depth after the area oriented logic optimization, and a layoutdriven synthesis flow that integrates performancedriven technology mapping and clustering with tdo to account for the effect of mapping.
The reason you can ignore the warnings when you use a pushbutton as a manual clock is that you cannot possibly press the button fast enough to interfere with the. Quartus prime enables analysis and synthesis of hdl designs, which enables the developer to compile their designs, perform timing analysis, examine rtl diagrams, simulate a designs reaction to different stimuli, and configure the target device with the programmer. True timing driven synthesis technology allows designers to specify the timing. How do i make quartus ii compile faster stack overflow. Use the f max reported by the intel quartus prime software after placeandroute for accurate postplaceandroute timing information. Settings for eda tool integration such as thirdparty synthesis tools, simulation tools, timing analysis tools, and formal verification tools. Initialization of the timing netlist may fail if there are errors in your synopsys design constraint. Verilog or vhdl code produced by creating a highlevel. The compile time advantages in the latest release are driven by more efficient place and route algorithms, improved multiprocessor support and faster timing driven synthesis. Using this flow, we created the titan23 benchmark set, which consists of 23 large 90k1. Timequest and the synopsis design constraint sdc file ece5760 cornell.
Timing optimization options optimization options, synthesis options, timing driven synthesis, wysiwig resynthesis, physical synthesis, retiming, register duplication. Brown, title difficulty of predicting interconnect delay in a timing driven fpga, booktitle cad flow, proceedings of the 2006 international workshop on system level interconnect prediction, year 2006, pages 38. There are two different reasons to simulate a digital circuit. Quartus ii integrated synthesis fully supports the verilog hdl and vhdl languages, and includes algorithms to minimize gate count, remove redundant logic, and use device architecture efficiently. Quartus ii settings file for your project, including the following global software settings. Designing with quartus ii advanced timing analysis day 4 part i sdc reminders and use of tcl for timequest. Incremental retiming for fpga physical synthesis request pdf. Timing driven synthesis option is not found in quartus 19.
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