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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Currently I’m doing verification for rtl versus netlist. Netlist against RTL, based on formal methods, no assertion here.

Synopsys Formality

The post-layout netlist adds buffer for timing consideration in the path which may be output high impedance. Afterwards the verification goes on successfully. Historically, one way to check the equivalence was to re-simulate, using the formalit netlist, the test cases that were developed for verifying the correctness of the RTL. The netlist haven’t been modified.

For Synopsys formalityyou can use side-file. If you are using DC to synthesize, it is formaliy to use formality and not Conformal for snopsys verification. Which tool can verify functional equivalence if given two different netlist files? Hi, I’ve created my own clock gating method, and I’m trying to check the logic equivalence by using synopsys formality. Retrieved from ” https: From the log-file entries below it has a lot more to go. From Wikipedia, the free encyclopedia. The main question in my mind is, why I need to verify the netlist.


RTL design flow synthesis, verilog. However, verification always fails even though I’ve checked the functional equivalence by RTL simulation.

Formal equivalence checking – Wikipedia

What are the following software prices for group license? The initial synosys will usually undergo a number of transformations such as optimization, addition of Design For Test DFT structures, etc. This is the first time through formality with this design and I’m seeing a very long run time.

A formal equivalence check can be forrmality between any two representations of a design: I’m trying to implement formality with RTL and netlist which is scan and clock gating inserted netlist. I’m hoping that FM will see that the points have already been matched and not go off and spend time on them. Conformal LEC constant constraint. This process is called gate level logic simulation. I deeply appreciate it.

This is essentially free in terms of logic. I am planning to study synopsys formalitybut I don’t know where I can get the tutorial materials. All the programs later in the process that make changes to the netlist also, in theory, ensure that these changes are logically equivalent to a previous version.


Which tool can verify functional equivalence if given two different netlist files? LEC is strict and wont support unsynthesizable constructs.

Formality –

You will need to find out that Reading in an existing match-point file. Hi Guys, I meet an issue when I read. Help about Formality Synopsyw. My clock gating method is as follows: What can be possible reasons for that?