Cadence® system design and verification solutions, integrated under our System Development 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.
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 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.
Can I force or probe a signal in vhdl module from verilog top testbench?I heard some simulator has its own way to do that easily, can you give me a example to do that with ncsim?
Some of the more recent versions of IUS (ncsim) will take '.' as the hierarchical separator through a mixed language hierarchy. In older versions, you would have to guess at when to use '.' and ':' through a hierarchical reference.If you're not sure, bring up the design browser and scope down into the module you are interested in and the design browser will show you the hierarchical path with the appropriate delimiters.Let us know if this doesn't answer your question.Harlin!
The testbench is verilog and the design is VHDL. So we instantiate the VHDL design (em0) at the verilog top level and force signals as follows:signal -force em0__ec0__fp0__flport_1__secnt_mclr 0(this is for the Palladium)hope that helps!
Hey, Tom!Also, in Palladium, once it goes through design import, there's no language difference (in reality, after HDLICE it's generally all verilog netlists). You can set the delimiterRule to verilog and then use '.' as hierarchical delimiter for the entire design. Using '.' is even more advantageous when you start with a gate-level netlist that usually contains instance names like '\a.b.c.d_456' or the like. Those things get ugly real fast.Harlin!
hey Harlin...we have used VHDL for so long we just haven't changed. When we evaluated assertions on the Palladium, we did use the "." as the separator...thanks!
In reply to archive:
I am using ncsim, Could you please tell me what is the syntax for forcing vhdl (RTL) signal from verilog testbench.
In reply to MSRajan:
I am assuming that you are attempting to create the force by directly assigning a value to the signal using an out-of-module reference (OOMR) path from within a verilog procedural block. As you've probably discovered there is no way to do the above in verilog code using an OOMR. This is because any OOMR path that begins with a verilog instance must end in a verilog instance. That's not to say, however, that it can't be done, it just can't be done within the verilog coding.
The way to do this is by using the tcl interface to ncsim. Be aware that you will also need to insure that you have elaborated the design with write access. The tcl argument to execute the force is as follows, depending on whether the signal is one or multiple bits:
force path.to.the.signal = '0'
force path.to.the.vector = "1001101"
Hope that helps.