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.
I am a new user of orcadpcb and would like to know if it is possible to minimize the length of the ratsnest during the placement of a component and not after it is placed.
place the component near to near so you can reduce the ratsnets
In reply to kabalee:
Yes, but this happens only after the component has been released during the movement ratnest is not updated.
In reply to PcbAG:
The tools don't work this way. The ratsnest is not dynamic. It will only update once you place the part down. You could assign a FUNCKEY to place the part down and pick it back up again which will update the ratsnest connections. Edit your env file to include
funckey " " "pick_to_grid -cursor;pick_to_grid -cursor"
This uses the spacebar to put the part down then pick it up again.
In reply to steve:
Thank you for your answer.I'm surprised.... even the cheaper cads have this function
In reply to RaylonS:
The ratsnest in Allegro is not dynamic. The older Layout product had a dynamic ratsnest, cadence are a bit behind in this respect.
There are settings that can help a little.
Click Setup > Design Parameters on the tool bar. In the dialog box set the ratsnest geometry to Straight. You can also set the ratsnest points to either closest endpoint or pin to pin. Closest enpoint works pretty good.
Other things you can do to make life easier is assign colors to specific nets like ground and power, Disable a ratsnest from showing, Blank all ratsnests so when you move a part only those nets show up.
Hope that helps some
In reply to ScottCad:
In reply to DonlAZ:
You can toggle the stretch etch in the Options tab. This will turn on and off the ratsnets while moving a part.
EMA Design Automation
Make sure they are turned on (Display - Show Rats - All) then invoke the command Edit - Move and make sure that Stretch Etch is not checked (Options fold out menu on the right hand side). If it is the rats become invisible when moving a part.
I am struggling with the rat lines as well but in my situation the "Closest endpoint" setting is not functioning properly. I opened a case over 17 months ago and I was told this is the way the tool is designed to work.
For instance when I finish a route and exit the command I see the rat line extend across the design to a pin to my plating bar when I have a via 100 microns in front of the end point of the route. I just opened another case since this is a later release and I am told the tool functions as designed and nobody else has asked for an enhancement.
I remember back in the day when User Groups were strong and the users would all have a presence to openly discuss issues with the tools in front of the developers. I miss those days because other vendors were responsive to those open forums.
There are many tools on the market both cheaper and more expensive that have the ability to show the rat lines from a route to any of the closest end point (i.e. via, pin, bond finger, etc.) that provide the designer a very helpful guide to plan accordingly at a glance where to route and how to get there in the path of least resistance. I do not have that using this tool and feel like I am not being heard that this is indeed a problem.
Anyone else have this problem?
In reply to tonyhuffman:
unfortunately also I have the same problem. The Ratsnets not close to end point !
I need to swap some pins on a BGA with a PCB Designer Professional, but ratsnest not close to end points of partial routes to pins ! It's a very problem.
Please Cadence resolve this ! There is not a problem for a big factory like CADENCE to solve this, and to add "dynamic" ratsnest minimizations !
Hope some Cadence engineer ear this help request !
Best Regards, Gianni.
In options select Ripup Etch, this will show rats while moving part.
In reply to ChandM:
thank you very much for you reply. Any suggestion are always welcome.
The "Ripup Etch" are not always the desiderable option.
With "Ripup Etch" enabled the reconnect are made only after the place of symbol.
The very desiderable action is, to have a "dynamic reconnect" with attaching the Ratenest to nearest point available, BEFORE you place the symbol.
Others competitors have this :-( Please Cadence make this feature !
Best regards, Gianni.
In reply to GP studio:
For many many many years now I have used tools (late 1980's) that have a dynamic rats nest as you move the part you are intending to place. Moving to a new tool (Cadence) took away this valuable feature that Cadence does not believe brings value. They tell me that it works just fine to show the closest connect point with I strongly beg to differ on that statement.
A connect point can be a component pin, a via or a trace end (partially routed trace that is dangling) but this is not seen as valid points by the Cadence team. This would be so valuable aid when trying to do a quick placement of parts. One day maybe but perhaps one day too late.
your comment describe accurately, waht are need, for "dynamic rats nets".
I hope to Cadence consider this really important, because are a "basic" most important feature.