Cadence® system design and verification solutions, integrated under our Verification Suite, provide the simulation, acceleration, emulation, and management capabilities.
Verification 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.
More Support Log In
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 technology. 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.
Get email delivery of the Cadence blog featured here
In my last post, I left you in suspense, with your mouse hovering over the words "Click to add test" in ADE XL. Clicking on this button will bring up the ADE XL Test Editor window (which should look suspiciously familiar) and a dialog asking you to point to the design you want to use. This design does not have to be the same cellview as the adexl view you're working with. It can be any design you want to simulate.
ADE XL Test Editor
Now take a look at the ADE XL Test Editor. DON'T PANIC. It's exactly the same as the good old friendly ADE L window. You set up your test in exactly the same way you do it in ADE L. If you have an existing state, load it here. If not, use the Setup, Analyses, Variables and Outputs menus to create your simulation setup.
The ADE XL Test Editor also includes all the features and enhancements discussed in my previous posts (here and here).
Tip: If you put the following in your .cdsinit file, the Test Editor window will also include the Run button, so you can test out your setup without stepping out of your comfort zone--
envSetVal("adexl.testEditor" "showAllMenus" 'boolean t)
Ok, let's step out of that comfort zone, shall we? Why do you want that extra window anyway? Close it and let's move along.
You don't need the Test Editor
Back in ADE XL, you'll see the test you just added in the Tests section of the Data View Assistant (upper left corner of the main window). By default, the test will be named something like myLib:myCell:1. The :1 suffix will increment if you add other tests with the same library and cell name.
Tip: I don't know about you, but I usually find the default test names to be annoyingly long, so I like to rename them to something more meaningful to me. To do this, we'll employ a technique I'll call "edit in place". First, click on the name of the test in the Data View Assistant. It will look like it's selected. Now click again and you'll be in edit mode. Note I didn't say "double-click" (That would open the Test Editor window and we're done with that...). Just click and then click again--there's a difference.
You can see lots of information about the test right in the Data View Assistant. By expanding the tree, you can see the simulator, the analyses and the design variables for each test. Hover over the test name and you'll get a gigantic tooltip which will show you the lib/cell/view for that test (among other things). Click the RMB (right mouse button) and you'll be able to directly access pretty much every element of the test setup (temperature, model libraries, options, etc.).
Information about the outputs from the test can be seen and modified in the Outputs Setup pane (the big area in the middle of the window). RMB in that area and you'll see all the entries relating to setting up outputs to be saved and plotted, adding expressions as well as access to the "Save All" and "Printing/Plotting Options" dialogs. We'll talk more about this area in detail in a later article.
There's no need to open the Test Editor window again. Really. Why do you need another window?
Dude, where's my schematic?
RMB on the test name in the Data View Assistant and select "Open Design in Tab" to do just that (open the design corresponding to that test in a new tab).
Tip: By default, the design will be opened in "read" mode. To open automatically in edit mode, put the following line in your .cdsinit file:
envSetVal("adexl.gui" "openDesignAccessMode" 'cyclic "a")
By the way, ADE XL is pretty smart about opening the schematic when you need it. Executing any command that needs you to point to something on the schematic will automatically open it (outputs to be plotted, initial conditions, etc.). Not only that, but it pays attention to which test your mouse was pointing to when the command was invoked and opens the correct schematic for that test.
Now that we've got one test set up, why not add more? Surely you do more than one simulation? This is where ADE XL really starts to shine.
Tip: If you want to use the same schematic with a different ADE state, RMB over the test name corresponding to that schematic and select Create Test Copy. You'll get a duplicate copy of the test for which you can load a new state or edit as desired.
A single ADE XL view can contain any number of tests for different schematics using different sub-blocks and different simulators. The checkboxes in the Data View Assistant can be used to enable/disable each test. Even if you think you're totally finished with one testbench, just disable it. Guess what, you'll probably end up needing to run it again eventually when you get that email letting you know that a new model file has just been released. It sure would be handy not to have to go digging through the Library Manager to find all the tests you ran on that block 3 weeks ago.
Tip: Using multiple tests in ADE XL also enables you to share variables (so they only need to be changed in one place), copy output expressions from one test to another (RMB->Copy to Test... in the Outputs Setup pane) and even (spoiler alert) create expressions which combine results from more than one test (more on that next time).
Virtuoso Analog Design Environment
Don't forget that the tests in ADE XL don't have to reference the same cell where the adexl view exists. So copying an adexl view won't change the tests inside it. I think what you need is the cdsenv variable as follows in your .cdsinit: envSetVal("asimenv" "retainStateSettings" 'cyclic "all"). If this is set, it will attempt to keep any existing test settings when you point to a new design.
In fact even if I use import for adexl, I then have to update the design in the test and everything gets reset... Is there a way to copy an adexl state and link it to a new schematic without erasing all the setups?
Thank you so much stacyw ! you made my day. I had a problem when copying entire cellviews because the adexl2 remained always linked to the schematic1 of adexl1 and when I updated the schematic in the adexl2 it would just erase all my outputs, making me lose so much time! Thanks again
Yes, it's quite possible. In the adexl window for adexl2, use File->Import... from the window banner menu. There you can selected lib/cell/view adexl1 and which elements of the setup you want to import (tests, corners, variables, etc.). You can also use File->Export... to go the other way.
What happens if I want to copy a Test from 1 ADE-XL view to the other? Is that possible?I.e. I have a test which I would like to copy from adexl view adexl1 to adexl2 and change the design which is used to run the simulation. Thanks!