Hello Fellow PCB Designers,

We have a 10 layer PCB design that originated in Pads and was converted over to Allegro 17.4, this is an old design but is manufacturable and works perfectly fine.  When I try to generate a Gerber for the Top or Bottom layers

the Gerber comes out fine.  But Most of the middle layers are Etch's and via's for power and grounds, but the Gerber's come mostly blank, there might be some details, but in the Gerber view everything is displayed correctly.

The design does have many close spacings, I have not changed anything in the constrains manager yet, turned off a lot of the DRC's, but thinking there might be something wrong with the constrains.

  I find that the CSet is set to 2_18, not sure yet what this means, also there are many of these definitions, PCS 3,4,5,ect, are the same as CSet 2_18 any suggestions would be great, we are currently looking into this, have seen

that even small change in constraint manager can cause long processing and even Allegro crashing, this is a large project.

Thanks Much, Thanks, Mike Pollock.

Allegro part of DPI does not support scaling above 150%

I need to include Verilog-A files which live outside the Cadence ecosystem (i.e., they are not in veriloga views but rather are just text files) into a veriloga view. These external modules are not compatible with OA (parametized port widths) so I can't put them into cellviews and hook them together using schematics.

Example: I have a cellview "test" which has a symbol and veriloga view. I have three "externaI" modules mod1 (inside an external file mod1.va),  mod2 (inside an external file mod2.va),  and mod3 (inside an external file mod3.va). I instantiate one instance of each module in "module test". The three modules have some parametized ports which are interconnected by parameterized signals p1 and p2. These two signals are strictly local to the module.

At the bottom of the module I use "`include mod1.va", "`mod2.va", etc.

When I check and save test->veriloga it checks all the included modules as well as the "test" module. However, I get a warning:

Warning from spectre during AHDL compile.
WARNING (VACOMP-1047): The Verilog-A file contains more than one module
definition. ADE can process only one module per Verilog-A file. Put
only one module in each Verilog-A file so that ADE can identify pin
names, directions, and hierarchy within each separate module.

Is this just a SUGGESTION that I can safely ignore, or are my included modules going to be ignored?

RF Design Solutions for Next-Generation Products The International Microwave Symposium (IMS2022), otherwise known as Microwave Week, was recently held (June 19-24) at the Denver Convention center, returning to its long-standing g...(read more)

The Sigrity and Systems Analysis (SIGRITY/SYSANLS) 2022.1 HF2 release is now available for download at Cadence Downloads. For the list of CCRs fixed in the 2022.1 HF2 release, see the README.txt file in the installation hierarchy.(read more)

Hi, 
In the MATLAB, I am using cds_srr and cds_innersrr commands. Although I set the path to the spectre root, I face this error:

One or more output arguments not assigned during call to "cds_innersrr".

Error in cds_srr (line 20)
sig = cds_innersrr(dirname, dataset, signame, verbose);

Error in techsweep_spectre_run (line 64)
struct_n = cds_srr(c.outfile, c.sweep, params_n{1});

I would highly appreciate it if you could help me.

Sample clues

5 down: Torso covering (6)

7 down: Government by rogues (12)

15 across: eBay speciality (7)

18 across: Demonic (8)

20 across: Common language (6,6)

Extrowords © 2007 IndiaUncut.com. All rights reserved.
India Uncut * The IU Blog * Rave Out * Extrowords * Workoutable * Linkastic

Sample clues

17 across: Beckham speciality (4,4)

4 down: Havana speciality (5)

19 across: Infamous 1988 commercial against Michael Dukakis (9,4)

11 down: Precisely (2,3,3)

13 down: City infamously ransacked by the Japanese in 1937 (7)

Extrowords © 2007 IndiaUncut.com. All rights reserved.
India Uncut * The IU Blog * Rave Out * Extrowords * Workoutable * Linkastic

Sample clues

11 across: Chandigarh’s is 0172 (3,4)

21 across: He’s a loser, baby (4)

1 down: Garment meant to shape the torso (6)

12 down: It’s slogan: “Life, Liberty and the Pursuit” (8)

18 down: Noise made by badminton players? (6)

Extrowords © 2007 IndiaUncut.com. All rights reserved.
India Uncut * The IU Blog * Rave Out * Extrowords * Workoutable * Linkastic

Sample clues

5 across: The US president’s bird (3,5,3)

11 down: Group once known as the Quarrymen (7)

10 across: Cavalry sword (5)

19 across: Masonic ritual (5,6)

1 down: Pioneer of Ostpolitik (6)

Extrowords © 2007 IndiaUncut.com. All rights reserved.
India Uncut * The IU Blog * Rave Out * Extrowords * Workoutable * Linkastic

Sample clues

14 across: FDR’s baby (3,4)

1 down: A glitch in the Matrix? (4,2)

4 down: Slanted character (6)

5 down: New Year’s venue in New York (5,6)

16 down: Atmosphere of melancholy (5)

Extrowords © 2007 IndiaUncut.com. All rights reserved.
India Uncut * The IU Blog * Rave Out * Extrowords * Workoutable * Linkastic

Sample clues

6 across: Alejandro González Iñárritu’s breakthrough film (6,6)

19 across: Soft leather shoe (8)

7 down: Randroids, for example (12)

12 down: First American World Chess Champion (7)

17 down: Circle of influence (5)

Extrowords © 2007 IndiaUncut.com. All rights reserved.
India Uncut * The IU Blog * Rave Out * Extrowords * Workoutable * Linkastic

Sample clues

5 across: Robbie Robertson song about Richard Manuel (6,5)

2 down: F5 on a keyboard (7)

10 across: Lionel Richie hit (5)

3 down: ALTAIR, for example (5)

16 down: The problem with Florida 2000 (5)

Extrowords © 2007 IndiaUncut.com. All rights reserved.
India Uncut * The IU Blog * Rave Out * Extrowords * Workoutable * Linkastic

Sample clues

9 across: Van Morrison classic from Moondance (7)

6 down: Order beginning with ‘A’ (12)

6 across: Fatal weakness (8,4)

19 across: Rolling Stones classic (12)

4 down: Massacre tool (8)

Extrowords © 2007 IndiaUncut.com. All rights reserved.
India Uncut * The IU Blog * Rave Out * Extrowords * Workoutable * Linkastic

In this post, we will learn about the most important parameters for the analog simulators that affect the accuracy of the simulation results. We will also understand how each parameter limits the accuracy of the measurements for the DC and transient analyses.(read more)

The ICADVM20.1 ISR26 and IC6.1.8 ISR26 production releases are now available for download.(read more)

The ICADVM20.1 ISR27 and IC6.1.8 ISR27 production releases are now available for download.(read more)

Has anyone experienced the same situation?

Power efficiency is a critical factor in the fast-evolving world of semiconductor design.

The IEEE 1801 standard, also known as UPF (Unified Power Format), was developed by the IEEE to address the intricate challenges associated with power management in contemporary semiconductor designs. This standard offers a uniform framework for defining power domains, power states, and power intent, ensuring consistency across diverse tools and phases of the design process. By utilizing UPF, you can precisely model and regulate power consumption, a critical aspect for battery-operated devices, high-performance computing, and energy-efficient designs.

The key concepts of IEEE 1801 are:

1. Power domains
2. Power states
3. Power gating and isolation
4. Power switches
5. Level shifters, isolation, and retention cells
6. Macro model

Based on these building blocks, you write the power intent of the design.

The power intent for the design includes identifying/implementing low-power strategies that provide a clear description of the power architecture of a design.

The power definitions can effectively manage power consumption and ensure the chip meets its power and performance requirements.

You can start by creating the Power Supply Network, which defines how power is supplied to the design's various power domains and logic cells.

What's the next step to build the file? How do you understand the various concepts related to IEEE 1801? How do you complete the rest of the power intent file?

Relax!

Gear up to attend the training class created just for you to dive deep into the entire format and explore this exciting power specification method/format with hands-on labs in one day!

Training

Fundamentals of IEEE 1801 Low-Power Specification Format Training

This course is a complete tutorial for understanding the fundamentals of IEEE 1801 low-power specification format concepts. You learn about IEEE 1801 power supply networks, ground ports and nets, creating and connecting supply ports/nets, power domain, power switch, power states, defining isolation and level shifter strategies, hierarchical IEEE 1801, and various versions of the IEEE 1801. You also explore how power intent information can be used for a design across various flow stages, such as functional verification, synthesis, logic equivalency checking, place-and-route, test, timing signoff, power integrity, and so forth, using Cadence^® tools.

Labs

We ensure that your learning journey is smooth with hands-on labs covering various design scenarios.

Lab Videos

Now, the exciting part is that to help you further, we have created engaging videos of the training labs. You can refer to the lab module's instructions in demo format at https://support.cadence.com.

Lab Demo: Checking Power Supply Network in IEEE 1801 format and Running IEEE 1801 Quality Checks using Conformal Low Power

Lab Demo: Checking Power Intent for The Macro Connections in IEEE 1801 Format And Running IEEE 1801 Quality Checks using Conformal Low Power 

Online Class

Here is the course link.

Get ready for the most thrilling experience with Accelerated Learning!

The more you know, the faster you go!

Grab the cycle  or hike it, based on your existing knowledge.

Take the quiz and increase your learning pace!!

What's Next?

Grab your Badge after finishing the training and flaunt the expertise you have built up. 😊

Ready to take a tour of this power specification world? Let's help you enroll in this course.

We organize this training for you as a "Blended" or "Live" training. Please reach out to Cadence Training for further information. If you want to ensure you are always the first to know about anything new in training, you can use the SUBSCRIBE button on the landing page to sign up for our regular training newsletters.

Related Short Training Bytes/Videos

Enhance the learning experience with short videos:

Genus Synthesis Solution: Video Library

 Joules RTL Power Solution: Video Library

Related Training

 Low-Power Synthesis Flow with Genus Synthesis Solution

Genus Low-Power Synthesis Flow with IEEE 1801

Related Blogs

It's the Digital Era; Why Not Showcase Your Brand Through a Digital Badge! - Digital Design - Cadence Blogs - Cadence Community

Relax in Summer with Cooler IC chips and Ice-Cream! Do you want to Explore the Recipe? - Digital Design - Cadence Blogs - Cadence Community

Power Is HOT and Touches Everything and Everybody! But the Challenge Is To Deal With Low Power During Design Synthesis; How? - Digital Design - Cadence Blogs - Cadence Community

Binge on Chip Design Concepts this Weekend! - Digital Design - Cadence Blogs - Cadence Community

Cyprus is ranked first in fDi’s Island Economies of the Future rankings, followed by the Dominican Republic and Sri Lanka. Cathy Mullan and Naomi Davies detail the results.

New York continues to reign as leader of fDi’s American Cities of the Future 2019/20 ranking. San Francisco retains second place with Toronto rising to third. Naomi Davies reports.

A more detailed look at fDi's judges’ top five American Cities of the Future 2019/20 for FDI strategy. Naomi Davies reports.

Research by fDi Intelligence reveals which countries receive more than their ‘expected share’ of FDI. 

London has been named fDi’s inaugural Fintech Location of the Future for 2019/20, followed by Singapore and Belfast. 

Singapore has retained its place at the top of fDi's Asia-Pacific Cities of the Future ranking, with Shanghai and Tokyo completing the top three list. 

The UAE's DMCC takes home the top prize in fDi’s Global Free Zones of the Year for a fifth consecutive year. 

Research by fDi Intelligence reveals which cities received the most tech start-up FDI relative to their population between 2016 and 2018, with European cities coming out on top.

Australia tops the FDI Strategy category of fDi's Tourism Locations of the Future 2019/20 rankings, followed by Costa Rica and Azerbaijan.

Lithuania's Go Vilnius has been named fDi’s IPA of the Year for 2019, and organisations from across the globe are commended for their investment promotion and economic development activities. 

A look at the results of fDi’s rankings throughout 2019 finds that Singapore and New York dominated the year’s league tables, followed by Shanghai, Tokyo and London

In spite of the uncertainty caused by Brexit, London retains its position as fDi's European City of the Future for 2020/21, while Paris keeps the regional crown.

London has retained its position as fDi’s European City of the Future, while Paris has climbed to second place, knocking Dublin into the third spot. 

London is crowned best major city in Europe in fDi's FDI Strategy category, with Glasgow, Vilnius, Reykjavik and Galway also winning out.

Paris Region has kept its fDi European Region of the Future title, while Dublin Region holds on to second place and North Rhine-Westphalia is in third. 

North Rhine-Westphalia is fDi's top large region for FDI Strategy, with the Basque Country topping the table for mid-sized regions and Ireland South East first among small regions. 

London LEP and Thames Valley Berkshire LEP hold on to their respective first and second places in the Local Enterprise Partnership rankings, while Oxfordshire LEP jumps up eight places to third. 

Togo won a record number of greenfield investment projects last year.

Escalation in protests across the globe in 2019 are forecast to persist into the new decade, according to Verisk Maplecroft report.

Global FDI flows recorded a marginal 1% fall in 2019, but the value of announced greenfield investment projects plummets by 22%.

Celebrating its centennial, Albania’s capital is ranked among fDi’s top five mid-sized European Cities of the Future 2020/2021 for Cost Effectiveness

Brazil’s FDI flows were boosted in 2019 by the government’s privatisation programme.

Poland’s Wrocław has turned in a stellar performance in fDi’s Return on Investment study, landing the city the top slot in the Return on Budget and Return on Personnel Investment categories. 

Replacing the “nightmare” that was Nafta was a dream of US president Donald Trump – but its replacement appears to favour few groups except for dispute resolution firms.

Ford's bestselling F-150 full-size pickup truck receives minor changes for the 2025 model year, including some removal of standard equipment on certain trim levels in exchange for lower starting prices. Ford also rolls out BlueCruise 1.4 and expands the availability of the latest iteration of its limited hands-free driving system. The base F-150...

What kind of vehicle is the 2025 Mercedes-Benz E-Class? What does it compare to? Mercedes-Benz’s E-Class is offered as a sedan or wagon with several powertrain choices. It squares off well against the BMW 5-Series and Audi A6 as well as the Volvo S90. Is the 2025 Mercedes-Benz E-Class a good car? It is a fine choice. The E-Class boasts a...

We're already deeply into the discovery phase of the 2025 model year. With it, as usual, have come a stellar crop of new vehicles—everything from the high and mighty Chevy Corvette ZR1 to the cheeky, efficient Honda Civic Hybrid. But on the sadder end of the spectrum, we're tallying the list of vehicles that didn't make the cut—the...

What kind of vehicle is the 2025 Mercdes-Benz S-Class? What does it compare to? The S-Class is Mercedes-Benz’s top sedan. It’s similar in concept to the BMW 7-Series and Audi A8, as well as the Lexus LS. Is the 2025 Mercdes-Benz S-Class a good car? It’s about as good as a sedan can get. The S-Class brims with tech and style, and...

What kind of vehicle is the 2025 Rivian R1S? What does it compare to? The Rivian R1S is an electric three-row SUV with three battery pack size options. With its gut-dropping acceleration, bona fide off-road prowess, and overall on-road comfort, it can’t be matched by the Kia EV9, Tesla Model X, and any other of the small but growing number...

What kind of vehicle is the 2025 Mercedes-Benz EQS? What does it compare to? The EQS is Mercedes-Benz’s top electric luxury car. Compare it to the EQS SUV, plus the BMW i7 and Tesla Model S. Is the 2025 Mercedes-Benz EQS a good car? It is an appealing enough choice overall, but one that doesn’t have the bank-vault solidty and myriad...

What kind of car is the 2025 Hyundai Ioniq 5? What does it compare to? Hyundai’s Ioniq 5 is a small hatchback EV with value baseline pricing. Rivals include the VW ID.4, Tesla Model Y, and Ford Mustang Mach-E. Is the 2025 Hyundai Ioniq 5 a good car? Yes. This Hyundai is one of the better options in its segment, with peppy performance...