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.
Hi,In the Floorplaning we will place macros manually according to logiacal connectivity. If we have suppose 24 macros and i have placed these macros in the four (4) rows an 6 colums.1. How to specify the distance between 2 macros for all sides(top,left,bottom,right) and what r parameters to be comsidered?2. Any good document which specifies the designing the power structure or how to design the power structure? what are facors or parameters are rquired to design power structure(designing power strap widths, number fo power straps)?3. In IR drop analysis, how switching factor, probability and toggle rate works (means how it works in the process or IR drop implimentation)?Please suggest me Thanks & Regards,Prashant
Hi Prashant,For spacing/aligning your macros, check out the floorplanning options:Floorplan->Edit Floorplan->Align Instances, Shift Instances, Space InstancesThe power question is a bit more difficult to answer. Coming up with a power grid can be challenging. You want to have a grid that supplies enough power to all your components without going below an IR-drop limit that you have decided on. Most folks pick 5% of the supply (that means a 2.5% drop for VDD and a 2.5% bounce for VSS). Then you need to decide which layers to use for the grid and the widths. Most people do back-of-the-envelope calculations or use a spreadsheet which calculates the IR-drop based on total power consumption, supply voltage, resistance of the metal layers, and widths/pitches of the metal layers. You can plug different widths and pitches for the layers into the spreadsheet until you get an acceptable IR-drop number. This can work well for wirebond designs, but becomes much more complicated for flip-chip designs. (But flip chips will need less of a grid, since power is coming into the design at regular intervals and not just from the chip boundary.)You will also want to center your power stripes on the routing grids so that you don't use up signal routing tracks unnecessarily. We have also found that more stripes of narrower width are better than fewer stripes of wider width for routability. But you don't want the power stripes to be too narrow (too much resistance). It's a good idea to do IR-drop analysis as early as possible in the flow to vet your power structure. When using a toggle rate for IR-drop analysis, a typical number is 20%. Some folks think this is a bit high, but others will say it's a bit low. It really depends on the chip and how it operates. For example, in test mode, you may be toggling everything more than you would in functional mode, and may want to use a higher toggle rate. But in general, the clocks use the most power and they are always toggling 100% (except for gated clocks).I probably didn't completely answer your power questions, but as you can see, there is a lot involved.I hope this helps out at least a little bit.- Kari
Prashant,I forgot to mention that you might try the Synthesize Power Plan feature:Power->Power Planning->Synthesize Power PlanYou enter the total power and desired drop and Encounter will create a starting power plan. You can use this as a guide to get started and refine it from there. I have not used this before, so I don't know much more about it.If you are using planDesign for floorplanning, you can also take advantage of the Automatic Power Planning feature associated with that. (This is in SOCE 6.2 - I don't know which version you use.)- Kari
Thanks kari!I was using older version of SOCE-4.2. Regards,Prashant
You're welcome, Prashant. The shift/align/space commands are available in 4.2, although they might be in a slightly different menu location. But I'm pretty sure that APP and planDesign were not around back then.- Kari