Drc errors in cadence The last step is to carefully look over the reports. When placing parts make sure your turn on the layer Place_Bound_top / _bottom (Display - Color/Visibility - Package Geometry layer). 4 version. Hi All, Is there any way to remove the off grid errors in the layout using skill language. Does anyone have any idea how I can get rid of these Soft-Check errors? Thanks! Travis Schulze Nov 18, 2021 · This is working for me so make sure you are up to date with hotfixes, latest are 17. If this is expected behaviour, then this is a prime example of where it would be nice to be able to waive all the DRC errors in one shot. Users can view the status of design rule checks (DRC) directly within the viewer, identifying any unplaced components, unrouted nets, and DRC errors that may be present. If your design has violated any design rules, DRC will reports the errors in the CIW. DRC errors in Encounter using custom std cell library. I used Encounter to do my place and route and streamed in my instances in Virtuso editor and finished a clean DRC check in Assura too. Joined Class: DRC ERROR CLASS Subclass: TOP Origin xy: (1345. Thru Pin to SMD Pin Spacing (-200. 4-2019 S023 or 17. 25mm spacing is sensitive. Mar 23, 2023 · After completing the routing, verify_drc tool highlights DRC errors on metal2 described as the following: Special Wire of Net VSS & Blockage of Cell C48. Thread starter pavanucs; Start date Jun 1, 2012; Status Not open for further replies. If any are violated, the DRC tool will notify you by flagging issues. Share Cite Adding those Mechanical pins created many DRC errors caused by the proximity of those pads attached to the TO220shape. The Free Viewer facilitates easy reporting by allowing users to capture canvas images and generate PDFs of the current view. 1, reminding me to run other important DRC decks (such as my wire-bonding rules, antenna, MiM, etc). As I mentioned that it is from UMC mmrf180 library and in that the resistor rnhr_rf comes with resisting material as poly but still the base of this poly is n-well and we have to connect this n-well to either VDD or GND whatever comes according to your design otherwise it shows that n-well is floating. The Cadence Design Communities support Cadence users and technologists interacting to exchange ideas, news, technical information, and best practices to solve problems and get the most from Cadence technology. I'm not sure if RFinley's post will help, since it's it's at the schematic level From the Allegro standpoint, I think you would need to look at the 'drc errors' for 'Net Spacing Constraints' where the actual spacing value is 0, then add this drc to the list of errors Oct 25, 2024 · DRC helps detect errors such as spacing violations, incorrect trace widths, and other layout issues that could compromise the reliability of the PCB. I tried setting the routeOngrid option true and routed the design again. end. The CIW window above shows that there are no errors or warnings found in the DRC process. " I guess it would be nice to have a more pronounced ERROR when running DRC update from the GUI or in Batch using Batch Drc. The DRC Browser can also output the list of DRC violations as a more readable bar or pie graph. I need a skill program that takes the grid value from the user as input and removes off grid errors in the current cell view. This seems like a catch 22. This cleared the errors on the first ULN2003 chip with OUTPUT[1,2]. Go to the RVE window. The Allegro PCB Editor SKILL Selection Mechanism The PCB Editor SKILL API includes functions that allow you to programmatically select elements for processing using the same mechanism that is used for standard PCB Editor commands. How do I fix those problem In this series. The creation and verification of complex SoCs, particularly at advanced nodes, can be a time-consuming process. iPegasus DRC for Virtuoso Studio improves productivity and delivers instant signoff quality DRC to achieve a higher quality layout to meet overall demand for faster design cycle turnaround time. Of course, the technology is fictional so in principle you could create your own based on the current PDK but that would be a significant amount of work since none of the DRC/LVS rules support it, the technology file doesn't support it, the devices and models don't either. "WARNING: 1 dynamic shape(s) out of date; checking skipped on these elements. Nov 5, 2014 · DRC ERRORS IN CADENCE DRC ERRORS IN CADENCE: 0 0 dataAuditErrors 263 0 4. Also make sure that the DRCs are turned on (Display - Color/Visibility - Stackup - Package_Top and _Bottom). By doing so, I achieved 0 DRC errors. cadence. Metals and vias are not allowed in chip corners, but we are not creating the entire chip. Feb 3, 2022 · The DRC Browser is a tool for PCB designers to find and fix the most important errors before they get to the CAM engineer. You are absolutely right, it is about the snap spacing as also recently read. If you place a dynamic oversize property on the element in mind or the shape that it having the problem or . Mar 30, 2021 · The Cadence Design Communities support Cadence users and technologists interacting to exchange ideas, news, technical information, and best practices to solve problems and get the most from Cadence technology. It looks to us that Pcell itself is not DRC clean as it is supposed. Nov 4, 2021 · But when I am performing DRC, I am getting the some DRC errors. 66) Constraint: Shape to Shape Spacing Constraint Set: DEFAULT Constraint Type: NET SPACING CONSTRAINTS Dec 5, 2023 · The Cadence Design Communities support Cadence users and technologists interacting to exchange ideas, news, technical information, and best practices to solve problems and get the most from Cadence technology. log will generate a warning when dynamic shapes are out of date. There are many prevention techniques for Latchup. pavanucs Newbie level 4. All design errors are organized i The Cadence Design Communities support Cadence users and technologists interacting to exchange ideas, news, technical information, and best practices to solve problems and get the most from Cadence technology. Thread starter gaidin; Start date Oct 4, 2006; Status Not open for further replies. 0) 5 MIL OVERLAP DEFAULT NET SPACING CONSTRAINTS Mechanical Pin "Pad50sq30d" Pin "T220build, 2" The Cadence Design Communities support Cadence users and technologists interacting to exchange ideas, news, technical information, and best practices to solve problems and get the most from Cadence technology. However, I got stuck on clearing some errors related to Design Rule Check (DRC). Learning Objectives After completing this course, you will be able to: Verify your physical IC design with Assura Verification Set up and run DRC and LVS Locate and display results from DRC and LVS runs Run verification in various input and run modes Software Used in This Course Virtuoso Layout Suite L, Assura Verification Software Release(s You don't specify the exact steps used but I suspect that you created the artwork and then used File>Import>Artwork to review it. I set a 0. Feb 5, 2024 · The Cadence Design Communities support Cadence users and technologists interacting to exchange ideas, news, technical information, and best practices to solve problems and get the most from Cadence technology. Please help me in clearing these DRC errors. When will you want to use it: You have a limited number of RVE or VUE licenses and want to allow more people to debug DRC errors at the Sep 9, 2024 · DRC Management. Dec 18, 2024 · Picking the right DRC tool and setting it up for your design needs; Starting the DRC analysis to check your layout against design rules; Watching the DRC process to catch any problems or slow spots; Analyzing DRC Reports. Running DRC To run a DRC, go to Verify DRC {OK or Apply}. Via Management. 3. For example, I'd like to select between 0. foundry, which I assume is IBM/GF from the names you mention), but also the specific technology name. Hello, I route a board on Cadence 14. In the "Log" window I am getting a warning stating "Layout and Assura versions are not matching". All design errors are organized in a clear, easy to navigate list, without having to leave the design environment. If I did something wrong please enlighten me. I am using Cadence Virtuoso 6. 6 Type : ParallelRunLength Spacing Oct 17, 2019 · The Cadence Design Communities support Cadence users and technologists interacting to exchange ideas, news, technical information, and best practices to solve problems and get the most from Cadence technology. Common PCB Design Rule Check Types Jan 14, 2021 · I am trying to meet the DRC errors of a layout pattern in FDSOI technology. 999, therefore a DRC is there. R. I use UMC180(0. Apr 15, 2020 · These errors are specific to the technology you're using. To run DRC in our cadence setup, do the following : Save the layout and choose Tools --> Assura . The circuit built is attached and layout. DRC status is reported in the pie chart within the OrCAD X Presto PCB Editor properties panel. Any help is appreciated, Eric Dear All, The DRC test has been passed with no errors. Cadence Design Systems understand the difficulties with this manual process and has released three VDR flows that help automate the process. I have deleted all the unwanted routed nets from the design, but still these errors remain . More PCB Fault-Finding Techniques for Designers In Pad Editor starting with version 17. Jul 13, 2017 · The Cadence Design Communities support Cadence users and technologists interacting to exchange ideas, news, technical information, and best practices to solve problems and get the most from Cadence technology. Then I was faced with hundreds of LUP and HVESD errors near to the submission deadline. As for the Cadence Online Support equivalent code, try this: but still need to check the DRC errors after you use this script. 028 Required : 0. Go through your design, layout and find out which will best suit to make your layout DRC clean as well as effective. However, there are a few area still have flashing x sign. These are the ones giving me L><W errors when I change their width to 8mils. 25mm size. a/b: Active spacing >= 0. Apr 27, 2020 · The DRC Browser is a tool for PCB designers to find and fix the most important errors, before they get to the CAM engineer. Let's perform a DRC on a layout that has errors The layout above shows the result of the DRC. Apr 9, 2021 · Neither gpdk090 (nor gpdk045) are triple well technologies and don't have a deep nwell. DRC Browsing and Filtering: Facilitates filtering and displaying DRC errors in the search panel for easy navigation. The basic problem I am facing is offgrid/nogrid routing errors. OrCAD X DRC Capabilities OrCAD X enhances the DRC process by providing a comprehensive and user-friendly environment for managing and correcting design errors through the Constraint Manager. 500. Go through this link. The Verify DRC form will appear. Mar 22, 2021 · Dear Andrew, Thank you for your reply. Cadence then runs the DRC and reports the errors or warnings, if any, in the CIW window. You can shorten this time by deselecting the Echo Commands option. This is a coordinate on the object of the DRC pair that does not have the DRC marker on it. Errors are indicated by the markers (white color) on the The Cadence Design Communities support Cadence users and technologists interacting to exchange ideas, news, technical information, and best practices to solve problems and get the most from Cadence technology. Users can further specify a breakdown by DRC violation type. 1. 2. Mar 8, 2023 · The Cadence Design Communities support Cadence users and technologists interacting to exchange ideas, news, technical information, and best practices to solve problems and get the most from Cadence technology. How OrCAD X Works With DRC Rules. **broken link removed** Thanks vlsi123 Jan 12, 2022 · For example, my DRC deck includes a rule called DRM. Whenever I add a shape (for copper) to enclose a thru-hole part on the inner plane (GND or PWR), I get this DRC on every pin of the part. The Cadence Design Communities support Cadence users and technologists interacting to exchange ideas, news My DRC status is still red, indicating a DRC error: But when I run Tools > Update DRC, then Tools > Quick Reports > Design Rules Check (DRC) Report nothing shows up in the window. Thing is that the Artwork data is designed to drive a photoplotter, not a PCB Design tool, so all the net and rule data has gone and the data is now just lines and shapes, import this into an ETCH layer and all the lines and shapes have no nets / rules / etc so you For huge layouts, DRC might take a bit of time to perform. *" (Corner Stress Relief) errors can be ignored. a/b, 4. Dec 9, 2024 · Design Rule Checking (DRC) and Status Monitoring. If there is a design rule violation, the DRC tool will identify what it is and where it is at. Nov 8, 2024 · The Cadence Design Communities support Cadence users and technologists interacting to exchange ideas, news, technical information, and best practices to solve problems and get the most from Cadence technology. For round non-plated holes I will typically add a circle Keep Out that is 20mils larger than the drill hole on all layers to keep copper 10mils away from the hole. The CIW above shows that there are no errors found in the DRC process. When dynamic shapes were first introduced, it would have spacing errors randomly on the brd file. Thank you. OrCAD X integrates numerous Design Rule Check (DRC) features to ensure manufacturability of PCB layouts. Cadence then runs the DRC and reports the errors, if any, in the CIW. Note: 1. Use nil if DRC is caused by a single object only. The Cadence Design Communities support Cadence users and technologists interacting to exchange ideas, news, technical Jul 15, 2021 · The Cadence Design Communities support Cadence users and technologists interacting to exchange ideas, news, technical information, and best practices to solve problems and get the most from Cadence technology. DRC Errors in Cadence. 1 ---> (GUARDEDG not GUARDRNG) sized by -1um not over Union (Ma_All, xxING, TGMOL, MXCRITEXCL, LOGOBND) maximum width for run length >= 5um, where x=1-6 and xx The Cadence Design Communities support Cadence users and technologists interacting to exchange ideas, news, technical information, and best practices to solve problems and get the most from Cadence technology. The total number of DRC errors is in the range of 1 million plus of which 900,000 odd are nogrid violations and 100,000 odd are offgrid. Mar 12, 2020 · The Cadence Design Communities support Cadence users and technologists interacting to exchange ideas, news, technical information, and best practices to solve problems and get the most from Cadence technology. If the spacing rule was 10mils the actual value would be 9. I'd like to assign a shortcut key to select a trace width from a predefined list while routing. I used a 0. gaidin Newbie level 4. 1B: Active width >= 0. In there, I select Min_Line_Width and enter 8 in the Value box. Then the screen filled with DRC errors galore on the arrayed boards. All "CSR. Oct 18, 2024 · The Cadence Design Communities support Cadence users and technologists interacting to exchange ideas, news, technical information, and best practices to solve problems and get the most from Cadence technology. (Please refer to the screenshot below): iPegasus DRC. l_secondPoint: Specify the second reference point. Jan 15, 2020 · The Cadence Design Communities support Cadence users and technologists interacting to exchange ideas, news, technical information, and best practices to solve problems and get the most from Cadence technology. For instance, the portion of metal 1 extended from the source of PMOS, which overlaps vdd (metal 1 as well) has flashing x sign. Set the Switch Names field. 28um. Adam Fuchs, Product Engineer at Cadence Design Systems, will demonstrate how to take a completed OrCAD X Schematic, and do a start-to-finish PCB Layout Design in the new OrCAD X Presto design tool. Concerning the voltage, 0. I almost cleaned DRC errors but I faced only two errors about the maximum empty space as follow: CxCFILL. For detailed usage, you can refer If a marker was missed, or incorrectly placed on a net, it could result in missed real DRC errors and/or false DRC errors. Errors are indicated by the markers (white as shown above) but in your layout it will blink. After my first posting, I've managed to clear the errors: left click on a trace segment, right click and select Net - Property edit. EMX Designer generates DRC-clean PCells that minimize the risk of DRC-related errors and relieve designers from time-consuming iterations. com Oct 16, 2022 · I am completely new to this, I am trying to complete a module on Cadence Virtuoso Education kit. After the DRC run and the pointing on the warnings, the relevant area on the layout will be highlighted, for example complaining about the minimum distances and so on, Mar 18, 2021 · lo_dbid: List of objects dbids that cause the DRC. Jul 7, 2021 · The Cadence Design Communities support Cadence users and technologists interacting to exchange ideas, news, technical information, and best practices to solve problems and get the most from Cadence technology. I am new to Cadence - I am trying to use via-in-pad on a design, but I can't figure out how to do so without throwing a ton of DRC errors. Is this a bug? Or is there somewhere else I can check to see if any design rules are broken? In this tutorial you are going to verify the inverter layout drawn in the previous tutorial using the Design Rule Checker (DRC). b. Oct 4, 2006 #1 G. Then just select a drc marker and it will be waived and disappear. 267 0 4. If you want to see it again, you can go to Display = Waive Drc => Show,and it will redisplay a drc marker that is rotated 90 degrees to indicate that it has been waived. 1C. The Edit Property window pops up. Actual : 0. Via Selection: Shows via-specific properties and allows modification for single or multiple vias. 96 10. If I remove the via, I get latch-up errors with the inverter because it does not have a tap to the substrate close enough, but the Soft-Check errors go away. The copper connects to all the pins and therefore these P/S DRC errors. Community Guidelines The Cadence Design Communities support Cadence users and technologists interacting to exchange ideas, news, technical information, and best practices to solve problems and get the most from Cadence technology. May 9, 2019 · i noticed that, corrected it. In this video, Adam will go over completion of routing and how to clean up DRC errors. 24um. A DRC enables you to verify that your schematic and layout accurately reflect the design margins you intended to adhere to. Hello friends!! I solved the issue. I kept this value as default as it was since the start of my layout work and was no problem for several cells I have finished, I don't understand why Cadence suddenly recognized that I must change it to fit the used technology. Jul 16, 2024 · Users can scroll through all of the board violations in the DRC Browser. Joined The Cadence Design Communities support Cadence users and technologists interacting to exchange ideas, news, technical information, and best practices to solve problems and get the most from Cadence technology. This means: Looking at the DRC results to find any rule breaks or errors To waive a drc, go to pull-down menu, Display => Waive Drcs => Waive. 127mm, and 0 View Hercules DRC errors in SOC/EDI View Hercules DRC errors in Virtuoso View Calibre DRC errors in SOC/EDI View Calibre DRC errors in Virtuoso GDSII to ASCII: translate a GDS2 file in readable text format. But still there is no significant reduction in the number of errors. I really appreciate if you have any suggestion for me to resolve this issue. 001 mil, the DRC is resolved. It’s also possible to show DRC Browser results as a graph. but it did not. The DRC's might be placement ones C-C, you need to ensure the place_bound_top does not overlap. Jan 30, 2023 · The Cadence Design Communities support Cadence users and technologists interacting to exchange ideas, news, technical information, and best practices to solve problems and get the most from Cadence technology. This is causing Soft-Check4 and 5 errors in the pad frame. 6 and Assura tool for the layout verification. . We will only focus on/disregard the following as mentioned: a. You will see that a new pull down menu named "Assura" appears on your layout window. May 21, 2024 · It identifies design errors that could lead to manufacturing defects and affect the reliability of your board. Using this point, you can identify the second object causing the DRC. See full list on community. I get several DRC errors like this one: LISTING: 1 element(s) < DRC ERROR > Class: DRC ERROR CLASS Subclass: TOP Origin xy: (82. Sep 7, 2020 · My board is a 4-layer board (signal/GND plane/PWR plane/signal). I thought removing/deleting the routed lines wil solve the problem . I deleted partial traces to the chips and rerouted these nets. You should have basic understanding of the layout rules from lecture, but if you need a refresher, the links below will take you to the relevant section of the mosis web site. the netlist created from schematics is ok i believe, i have compared this with the one exported from pcb file. Click OK to run DRC. Anyone can help on this are these errors or just warnings I can ignore and proceed, please advice. How do I set up the constraints Apr 15, 2012 · found drc errors in cadence. 0 and have an unknown problem. Each time I try to connect 2 pins of a same net, I have 2 DRC errors : Line to SMD Pin Spacing Jan 18, 2022 · After surrounding our prototype chip with the seal ring we received numerous DRC errors, On our way to investigate the reason we have created a new layout cell and only inserting the seal-ring Pcell and by running DRC over it the same amount of errors are generated. 78) Constraint: Minimum Blind/Buried Via Stagger Distance Constraint Products Solutions The Cadence Design Communities support Cadence users and technologists interacting to exchange ideas, news, technical information, and best practices to solve The Cadence Design Communities support Cadence users and technologists interacting to exchange ideas, news, technical information, and best practices to solve problems and get the most from Cadence technology. Feb 4, 2022 · Hello, I am using Cadence Virtuoso version IC6. Furthermore, the unparalleled flexibility of the PCells allows the creation of optimal devices that result in silicon area savings and floorplan efficiency. 1A. Is this the reason behind getting the errors? 2. 25mm pad size blind via on a BGA pad with a 0. Same with Tools > Quick Reports > Design Rules Net Short Check (DRC) Report. 18u) technology standard cells, design kit being obtained from Farday Corporation. Here, there is a list of errors and a description in the bottom box. W. After updating DRC the batch_drc. Filtering DRC Errors: Filters specific types of DRC errors, displaying them for easy correction. 0 0. It is sometimes hard to see where Cadence finds an error, so run the DRC check frequently so you know where you need to make changes. DRC Debugging. 44 1033. 1. I have attached the a screenshot of the errors. Click on the OK button. This switch name depends on the process you're running. Feb 1, 2022 · Hi Cadence, From my previous tape-out run, my DRC runs on sub-circuit cells did not check for LUP (Latch-up) and HVESD (High-voltage ESD) errors until I ran DRC on chip-level design. But, 176 DRC errors were raised saying "line to smd pin spacing" . Sep 9, 2024 · Check out Cadence’s suite of PCB design and analysis tools today. 8-64b. 082mm, 0. Jun 1, 2012 #1 P. 2-2016 S079. This cleared a few errors, however, the SMD Pin to SMD Pin DRC errors remain with P><P indicators in between ULN2003 pads as well as capacitor and resistors pads on the associated nets. obviously this netlist has nothing to do with neck width/length. WArning: [DRC0006} net has fewer than two connections DM6437_GP89. This clears all L><W errors on that trace. 2, on the Design Layer tab you can define a "Keep Out" area for any padstack. iPegasus DRC, combined with foundry-certified rule decks, runs the Cadence Jul 27, 2022 · In my layout are a few shapes. For the NCSU Kit and other processes: Leave as default. 1mm B/B stagger clearance in the physical constraints, but I am still getting a DRC Feb 23, 2010 · To overcome these errors in your layout, you need to go for Latchup Prevention techniques. So I'd suggest mentioning which process technology you're using in the hope that somebody will be familiar with that technology (i. but somehow, after import, lots of drc errors emerged. e. ttrbrybleyxmwcryypyzfpqxkrxohdfwwhajjxrtvzsxkjlojugmlmnkver