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.
Get the most out of your investment in Cadence technologies through a wide range of training offerings.
This course combines our Allegro PCB Editor Basic Techniques, followed by Allegro PCB Editor Intermediate Techniques.
Virtuoso Analog Design Environment Verifier 16.7
Learn learn to perform requirements-driven analog verification using the Virtuoso ADE Verifier tool.
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.
Get email delivery of the Cadence blog featured here
Just a quick blog today on a new 16.5 Allegro PCB Router enhancement for Staggered Via Rules.
The stagger gap value is defined by rules at the following levels:
Option Descriptions:on - turns the rule on.off - turns the rule off (default)min_gap - controls the minimum distance between consecutive vias in the pattern.If min_gap is not specified, a proper samenet bbvia/microvia to samenet bbvia/microvia clearance rule in effect controls the distance. An assigned negative value means no restricted min distance between consecutive vias in the patternmax_gap - controls the maximum distance between consecutive vias in the pattern. If max_gap is not specified (or assigned a negative value) any restrictions exist on max distance between consecutive vias in the pattern.
Examples:#define PCB level rule for staggered bbvias/microvias rule PCB (staggered_via on (min_gap 0.1) (max_gap 0.8))#redefine rule for staggered bbvias/microvias at ‘3_LAYER’rule layer 3_LAYER (staggered_via on (min_gap 0.2) (max_gap 0.7))#redefine rule for staggered bbvias/microvias of nets #from ‘NET_CLASS1’ class rule class NET_CLASS1 (staggered_via on (min_gap 0.3) (max_gap 0.6))#disable PCB level rule (similar rules at different hierarchy #levels are left enabled) rule PCB (staggered_via off)
COST of Via Stagger Violation:
Cost descriptor values are interpreted by the PCB autorouter as follows:- Forbidden, wrong staggered bbvia patterns aren't allowable for building (default)- High, additional cost on wrong staggered bbvia patterns 100- Medium, additional cost on wrong staggered bbvia patterns 25- Low, additional cost on wrong staggered bbvia patterns 8- Free, no additional cost on wrong staggered bbvia patternsNote: At the “converge” stage (either after 5th routing iteration or during “filter” command execution) the autorouter resets this cost to the forbidden value automatically.
I look forward to your input on this capability.
Jerry "GenPart" Grzenia