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44 Threads found on Setup Encounter
Seems like there may be an ancillary technology definition that is not loaded, doesn't exist or lacks detail. Height I suppose is really the underlying oxide thickness above substrate, thickness is (or should be) self- explanatory. Whether this is omission (to force style) or absence, needs you to drill down in the setup you've got (and maybe
I'm not so sure what External Delay is telling me. Is this telling me that the data from the colsel pin must be valid 0.7497ns from the rising edge of virtual_sclk, or is it something else? --> In setup timing, that constraint tell you that the data from colsel pin must be stable at least 0.7497ns before capture edge of virtual_sclk. Conside
Hi, I am using ELC to generate the .lib files for some layouts, but it seems like we need and elccfg files for that. Most of the tutorials online only tell how the format of file looks like but they donot tell how we can determine the values filled in those tables. I am using Samsung 28nm library from MOSIS and it didn't have
Hi folks, I have seen few zero cycle ( set_multicycle_path 0) setup paths in design. Can you explain why there is a need of having 0 cycle setup path? what is a advantage of the same? How do we check hold violations for these kind of paths? These paths are violating setup time. How can fix this issue in cadence encounter
check this link Fixing setup & Hold Violations
Hi I saw CPPR adjustment is added in the setup path and subtracted in the hold timing. What is the Purpose of CPPR. and hold time is calculated at the same edge of clock at two flipflops... so if a hold violation occurs then there is a possibility for setup violation also.. Is that Right? thanks
Hi, My SDF file generated by encounter does not specify setup/hold time for flipflop's reset. On the other hand, SDF file generated by DesignCompiler does specify that. Does anyone know how to fix this? Thanks
Hi, I am new to SOC encounter and I am using First encounter. When I try to do the physical design flow, I am having setup violations after nanorouting stage. The violation remains even after optimizing the design. I've read that addition of buffers will resolve the issue. But how can I add buffers in the design?? How can I identify (...)
hii, i need help, i hav use hfss 11 an problem encounter when i analyze my hfss antenna Port 'WavePort1': No non port face could be found containing a terminal edge assignment. Port refinement, process hf3d error: Number of terminals does not match the number of modes requested. Verify port WavePort1 setup. because
Well this doesnt tell much, the problem will be with your setup. Try an inverter first and see if the timing .lib is fine and then proceed to complex cells. Any characterization tool takes to time to get familiar with.
The flow in SoC, is floor plan, placement, optimization -prects, cts, optimization -postcts, optimization -postcts -hold, routing, optimization post route, setup &hold, optimisations si setup & hold.
I'm a beginner at using encounter and am running into some issues. The timing analysis reports in encounter show no setup or hold time violations in my design. However, after I import the layout into Virtuoso and run a simulation on the PEX extracted view (R+C only), there are several violations (they appear to be hold time violations). I (...)
Hi everyone, I am a learner of encounter (cadence) and meet the setup violation on the inclkSrc2reg group, which is shown as follows: Path 1: VIOLATED setup Check with Pin \DFF_1048/Q_reg /CLK Endpoint: \DFF_1048/Q_reg /D (^) checked with leading edge of 'CK' Beginpoint: g35 (v) triggered by leading edge of 'CK' (...)
1. using setOptCond command. 2. No i think. 3. Normally best case and worst case operating condition is used for SoC encounter do timing optimization of setup and hold. 4. Post-PD netlist has complete clock tree structure and so more accurate timing analysis with wire capacitance. Thanks.
If one were to build a replacement for the ordinary household washing machine motor. What kind of motor setup is one likely to encounter?, I suspect some kind of multi-phase controlled with IGBT or similar. But that may not be the whole story? (The larger picture is to accomplish a replacement that can do things ordinary controllers just won't.)
Hi, I am trying to use timing debug feature in soc encounter. When we click on the timing debug from the timing menu in the soc encounter, it will automatically display a new window with setup timing check. I want to analyze by viewing the path histogram of hold time but dont know how to do that after search in the soc user guide and (...)
Hi all, Im using SoC encounter, and after placement + optimization i analyzed time and got about 1700 setup violations. The thing is, that apart from 6, all the violations are input-to-register, and almost all of them includes a port named PHY_DATA. Example to a path from the report in the image. 61721 And it con
Yes there are a number of template scripts. There is one for each stage of the design process and they are all controlled by a single setup script which initializes the design variables. Here is how you can get the template scripts. This is from encounter Text Command Reference: writeFlowTemplate -help
The "optimal" solution you want is a ripple counter, which has a delay from clock input to output. The delay increases for each counter stage, and there will be problems with setup time if you feed the outputs to other parts of a synchronous design. The solution from the tool is fully synchronous and all outputs will switch at the same time.
We have a flow setup with Cadence RTL Compiler. The command for that is write_atpg -stil > design.stil This can be imported into Tetramax. With Mentor, I am assuming DFT advisor can do the same thing . . -- adam