Conformal and Formality are both formal equivalence tools – they check that two circuit descriptions are functionally the same. They both have. 2, Synopsys Inc. introduced Formality, the industry’s first formal verification tool for equivalency checking of million-gate, system-on-a-chip (SOC) designs. This document contains a brief introduction to Synopsys Design Analyzer, Sysnopsys Formality, and. Cadence Conformal tools. You would.

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RTL design flow synthesis, verilog. How can I formality check what inserted scan and clock gating? Help needed in Primt time!!! Hi, is there any tool for RTL equivalence checking? When I trying to check formal between RTL and netlist not clock gating and not scan insertion then they are no mismatch.

Logic synthesis Place and route Placement Routing Register-transfer level Hardware description language High-level synthesis Formal equivalence checking Synchronous logic Asynchronous logic Finite-state machine Hierarchical state machine. If formalitj asked Synthesis to re-balance logic, the input logic for some registers will be different.

Formal equivalence checking process is a part of electronic design automation EDAcommonly used during the development of digital integrated circuitsto formally prove that two representations of a circuit design exhibit exactly the same behavior. Is it means that the tools cannot be trusted? Which tool can verify functional equivalence if given two different netlist files?

Synopsys Formality

By using this site, you agree to the Terms of Use and Privacy Policy. But I’m not sure what am I supposed to d. But it should be possible to get it passing with Conformal as well.


The big problem of formal verivication. Formal verfication of DFT between placed netlist and synthesis netlist. This process is called gate level logic simulation. The previous design is 2. What can be possible reasons for that? What are the following software formapity for group license? However, verification always fails even though I’ve synopsyx the functional equivalence by RTL simulation. An alternative way to solve this is to formally prove that the RTL code and the netlist synthesized from it have exactly the same behavior in all relevant cases.

This is essentially free in terms of sunopsys. You will need to find out that This may cause simulation -synthesis. For the situation mentioned in your previous post, it will still be treated as a DRC violation. The post-layout netlist adds buffer for synpsys consideration in the path which may be output high impedance.

Hello, I compiled some gated clocks in my design, and when I do formal verification, the gated clock synopsyx are in unmatch cell list, how can I tell formality about the gated clock setting? If you are using DC to synthesize, it is preferred to use formality and not Synopys for formal verification. Formality; Long run time. This page was last edited on 4 Septemberat Digital signal Boolean algebra Logic synthesis Logic in computer science Computer architecture Digital signal Digital signal processing Circuit minimization Switching circuit theory.

Hi all, i’m currently working on synopsys formality. However, the problem with this is that the quality of the check is only as good as the quality of the test cases.

The initial netlist will usually undergo a number of transformations such as optimization, addition of Design For Test DFT structures, etc. All written in VerilogHDL Is there any tool supported by Synopsys or Cadence that can help me to verify the equivalence of these two desig.


Reading in an existing match-point file. Glad that I asked you the question.

The job hasn’t finished yet. I want to inquire the following software pricing for group license.

For synopsys formalityyou can use side-file We also need to check it’s timing is meet requirement as SDC constraint described. Also, gate-level simulations are notoriously slow to execute, which is a major problem as the size of digital designs continues to grow exponentially.

Hi, I’m currenty trying to use synopsys Design Compiler to generate netlists for use with formality.

Formality –

On compilation of a specific module, I run into this issue. Maybe some additional constraints might be required. But when I insterted scan and clock gating, then they are not equality.

Previous 1 2 Next. Therefore, instead of blindly assuming that no mistakes were made, a verification step is needed to check the logical equivalence of the final version of the netlist to the original snyopsys of the design golden reference model.

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Formal equivalence checking

When the final tape-out is made of a digital chip, many different EDA programs and possibly some manual edits will have altered the syno;sys. Variable is are being read asyncronously. LEC is strict and wont support unsynthesizable constructs.

Your concern is valid, but still it is not considered as a functional violation. How Formality do the parallel computing? Tools are Magellan synopsys or 0-in me.