Cadence® system design and verification solutions, integrated under our System Development Suite, provide the simulation, acceleration, emulation, and management capabilities.
System Development Suite Related Products A-Z
Cadence® digital design and signoff solutions provide a fast path to design closure and better predictability, helping you meet your power, performance, and area (PPA) targets.
Full-Flow Digital Solution Related Products A-Z
Cadence® custom, analog, and RF design solutions can help you save time by automating many routine tasks, from block-level and mixed-signal simulation to routing and library characterization.
Overview Related Products A-Z
Driving efficiency and accuracy in advanced packaging, system planning, and multi-fabric interoperability, Cadence® package implementation products deliver the automation and accuracy.
Cadence® PCB design solutions enable shorter, more predictable design cycles with greater integration of component design and system-level simulation for a constraint-driven flow.
An open IP platform for you to customize your app-driven SoC design.
Comprehensive solutions and methodologies.
Helping you meet your broader business goals.
A global customer support infrastructure with around-the-clock help.
24/7 Support - Cadence Online Support
Locate the latest software updates, service request, technical documentation, solutions and more in your personalized environment.
Cadence offers various software services for download. This page describes our offerings, including the Allegro FREE Physical Viewer.
The Cadence Academic Network helps build strong relationships between academia and industry, and promotes the proliferation of leading-edge technologies and methodologies at universities renowned for their engineering and design excellence.
Participate in CDNLive
A huge knowledge exchange platform for academia to network with industry. We are looking for academic speakers to talk about their research to the industry attendees at the Academic Track at CDNLive EMEA and Silicon Valley.
Come & Meet Us @ Events
A huge knowledge exchange platform for academia. We are looking for academic speakers to talk about their research to industry attendees.
Americas University Software Program
Join the 250+ qualified Americas member universities who have already incorporated Cadence EDA software into their classrooms and academic research projects.
EMEA University Software Program
In EMEA, Cadence works with EUROPRACTICE to ensure cost-effective availability of our extensive electronic design automation (EDA) tools for non-commercial activities.
Apply Now For Jobs
If you are a recent college graduate or a student looking for internship. Visit our exclusive job search page for interns and recent college graduate jobs.
Cadence is a Great Place to do great work
Learn more about our internship program and visit our careers page to do meaningful work and make a great impact.
Get the most out of your investment in Cadence technologies through a wide range of training offerings.
Overview All Courses Asia Pacific EMEANorth America
Instructor-led training [ILT] are live classes that are offered in our state-of-the-art classrooms at our worldwide training centers, at your site, or as a Virtual classroom.
Online Training is delivered over the web to let you proceed at your own pace, anytime and anywhere.
Exchange ideas, news, technical information, and best practices.
The community is open to everyone, and to provide the most value, we require participants to follow our Community Guidelines that facilitate a quality exchange of ideas and information.
It's not all about the technlogy. Here we exchange ideas on the Cadence Academic Network and other subjects of general interest.
Cadence is a leading provider of system design tools, software, IP, and services.
I have code that provide the maximum and minimum Finished Hole Size based on a number of things including tolerance and have defined this as a User ?ColumnDefinition and ?CustomData field.
The notes in the .dlt file state that the 'Matching of data to a hole is done on the basis of the hole size in field 1 and the plating status in field 2.'
If I have two drills of the same size (8 mil) and plating (PLATED), but one has tolerance of + 0 / - 8 and the other drill has tolerance of +/- 3 then there is a problem. Although the two are shown on separate lines with their individual tolerances, my 'Finished Hole Size' column calls out the same variance, which could be random (one time it is 8-0, another time it is 11-5). Due to both being 8 mil drills and PLATED holes, the system is unable to distinquish between the two and randomly assigns the User definition.
Is there any way of adding another User defined field to over-ride the plating to be able to distinguish between the two tolerances?
Here is the result of the coding in the .dlt file.
?ColumnDefinitions '( ("Figure" "FIGURE" 7) ("Holesize" "Size" 15) ("Tolerance" "Tolerance" 15) ("User" "FINISHED HOLE" 15) ("PlateStatus" "Plating" 10 ) ("Quantity" "QTY" 6 ) ) ?CustomData '( ( 8.000000 "PLATED" "8.0 - 0.0" ) ( 8.000000 "PLATED" "8.0 - 0.0" ) ( 8.000000 "PLATED" "8.0 - 0.0" ) ( 8.000000 "PLATED" "8.0 - 0.0" ) ( 8.000000 "PLATED" "11.0 - 5.0" ) -- note the different finished range
( 14.000000 "PLATED" "17.0 - 11.0" ) ( 20.000000 "PLATED" "23.0 - 17.0" ) ( 20.000000 "PLATED" "23.0 - 17.0" ) ( 25.591000 "NON-PLATED" "27.6 - 23.6" ) ( 27.953000 "PLATED" "31.0 - 25.0" ) )
The only option I have at the moment is to vary one of the drill sizes slightly - say to 7.9 - in order to distinguish between the two.
Thanks for any feedback.
For different tolerances, put the tolerance in the padstack. It's not ideal because, if you have a tolerance in any padstack, the nclegend is populated with 0.0/-0.0 for all the padstacks without a tolerance.
This is you would do it this way:
?ColumnDefinitions '( ("Figure" "FIGURE" 7) ("Holesize" "Size" 15) ("User" "Tolerance" 15) ("Tolerance" "Tol override" 15) ("PlateStatus" "Plating" 10 ) ("Quantity" "QTY" 6 ) ) ?CustomData '( ( 8.000000 "PLATED" "8.0 - 0.0" ) ( 14.000000 "PLATED" "17.0 - 11.0" ) ( 20.000000 "PLATED" "23.0 - 17.0" ) ( 25.591000 "NON-PLATED" "27.6 - 23.6" ) ( 27.953000 "PLATED" "31.0 - 25.0" ) )