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.
Dr L.: I read your post on the OrCad forum and it looks like you need some good PCB stackup consulting. Talk to your fabricator or hire a consultant to help you. That stackup is not reliable and will produce some noise/crosstalk issues.
Regarding the products. The basic package includes a signal layer routing limitation of 6 layers. Your stackup would not qualify unless you turned off routing on top and bottom.
Specctra is the name of the pcb autorouter from older days -- it remains basically unchanged but renamed in the newer products called PCB Router.
Allegro L will get you more constraint capability but it won't increase layer count. That is a different product "Router Performance"
I have been on the product for more than 15 years and have not *truly* needed the additional routing layers. There are some tricks you can play by turning off routing layers but 6 signal layers covers a *lot* of pcb designs. Power planes and stackup play an important part and contribute to the high layer count like your reference design has.
Here is a link to the Cadence datasheet: http://www.cadence.com/rl/Resources/datasheets/7432_PCB_Designs_FINAL.pdf
In reply to redwire:
In reply to DrLightning:
Working from #4 on your reply backwards.
The stackup? You posted it:
Here is the detail of the reference design layers:
4 signal layers (ML4, ML5, ML6, Bottom) is not consistent with good signal integrity and power integrity practice. 11 layer boards are not standard. Check with your fabricator and / or hire a specialist.
#3) The tricks are complex to write out in one sentence to a newbie on a forum. I'd suggest practicing with the tool for a while and ask specific questions.
#2) No. Router Performance is an option. Perf. L gets you constraints.
#1) 6 signal layers is 6 signal layers. Power planes don't count no matter how hard you try.
just to #1)
- you would place the parts by hand
- you will decide about the stackup of the board (brainwork in collaboration with your boardshop)
- you will fanout (automatically or by hand) just the GND and PWR nets (that means 4-6 layers are done)
- now you disable the done nets from routing and you autoroute the last 4 - 6 layers, that means your actually autorouter will be fine...
Thats the way I understand redwires posts.