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When starting a new design, it's important to take the time to consider design recommendations that prevent problems that can arise later in the design cycle. This two-part compilation of guidelines for starting a new design is the result of years of Cadence AWR Design Environment platform Support experience with designs. Pre-design decisions for user interface, simulation, layout, and library configuration lay the groundwork for a successful and efficient AWR design. This blog, part 2, covers the layout and component library considerations designers should note prior to starting a design.(read more)

Dear all, 

I'm trying to perform an LVS check using Calibre between a layout that was generated by Innovus and the initial netlist generated by Genus. However, once I hit Run LVS on Calibre, it reports the following warnings and recommends to stop the process:

Source netlist references but does not define more than 10 subckts:
DFD1BWP7T
DFKCND1BWP7T
DFKCNQD1BWP7T
DFKSND1BWP7T
DFQD1BWP7T
IND2D0BWP7T
INR2D0BWP7T
INVD0BWP7T
INVD2P5BWP7T
IOA21D0BWP7T
... (and more)

If I proceed the LVS process it shows lots of errors as shown in the following image:

Why Genus doesn't include the definition of those sub circuits in the generated netlist? Is this related to Flat/Hierarchy netlisting? 

I have included my Genus scripts as well as the generated netlist in the attachments (and here - if attachment don't work).

Many thanks,

Anas

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Allegro X System Capture offers a complete ecosystem for library development. This post introduces the latest DE-HDL Library Development using System Capture course in which you learn how to create different library objects. As a librarian, you often work with numerous libraries. Your tasks include creating or modifying symbols for libraries. To use Allegro X System Capture to create a library, you can follow the steps in the following flowchart: Let’s go through each step in detail. Setting the CDS_SITE Variable Before you start library development for a new project, set the CDS_SITE system environment variable. This step is required to access libraries and other configuration files. Creating a Project in Allegro X System Capture The next step is to create a project in Allegro X System Capture. Adding a Library to the Project Symbol development consists of creating symbol graphics, electrical data, and properties used by different tools in the PCB design flow. 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You can divide these high-pin count devices into smaller pieces, where each piece is a separate version of the part. Such parts are referred to as split parts or multi-section symbols. For multi-section symbols, you can create two types of split parts—symmetrical and asymmetrical. Symmetrical Split Symbols A symmetrical split symbol has only one symbol graphic, which holds two or more identical logic symbols, each with its own unique physical pin numbers. You can create a symmetrical split symbol using the Duplicate Section icon in the canvas window. Each symbol section contains the same set of pins but different pin numbers, as shown in the following image: Asymmetrical Split Symbols An asymmetrical split symbol is a symbol whose physical package contains one or more unique schematic symbols. You can create an asymmetrical split symbol by clicking the New Section icon in the canvas window. Asymmetrical symbols have a unique set of logical pins, as shown in the following image: Creating Symbols Using the Spreadsheet Interface To simplify the development of large symbols, Allegro X System Capture has a Spreadsheet Interface . You can copy from a spreadsheet into the interface. This saves time and helps minimize errors introduced by manual entry. In conclusion, the DE-HDL library development using Allegro X System Capture course involves several critical steps and supports various symbol creation techniques. This course helps librarians create and modify symbols effortlessly and deepens their understanding of library development within Allegro X System Capture. To learn more about this topic, enroll in the DE-HDL Library Development using Allegro X System Capture course on the Cadence Support portal . Click the training byte link now or visit Cadence Support and search for training bytes under Video Library. If you find the post useful and want to delve deeper into training details, enroll in the following online training course for lab instructions and a downloadable design: DE-HDL Library Development using Allegro X System Capture (Online). You can become Cadence Certified once you complete the course. Cadence Training Services now offers free Digital Badges for all popular online training courses. These badges indicate proficiency in a certain technology or skill and give you a way to validate your expertise to managers and potential employers. You can add the digital badge to your email signature or any social media channels, such as Facebook or LinkedIn, to highlight your expertise. To find out more, see the blog post Take a Cadence Masterclass and Get a Badge . You might also be interested in the training Learning Map that guides you through recommended course flows as well as tool experience and knowledge-level training modules. To find information on how to get an account on the Cadence Learning and Support portal, see here . SUBSCRIBE to the Cadence training newsletter to be updated about upcoming training, webinars, and much more. If you have any questions about courses, schedules, online training, blended/virtual live training, or public, or onsite live training, reach out to us at Cadence Training .

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During a mixed-signal simulation, the analog engine usually dominates the simulation time and resources. If you need to run only the analog engine in several windows, or if you would like to to run multiple tests of the same circuit with different stimuli or test pattern, then you need to run the simulation multiple times. View this blog to know more about the the two advanced technologies that Spectre AMS Designer provides to help you improve the efficiency of your mixed-signal designs and to increase the simulation speed.(read more)

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Training Bytes are not just short technical videos; they are particularly designed to provide comprehensive support in understanding and learning various concepts and methodologies.

These comprehensive yet small Training Bytes can be created to show various concepts and processes in a shorter pane of five to ten minutes, for example, running DFT synthesis, scanning insertion, inserting advanced testability features, test point insertion, debugging DFT violations, etc.

In this blog, we will show you the DFT Synthesis Flow with Cadence's Genus Synthesis Solution using small Training Bytes available on the Cadence Learning and Support Portal. To explore these training bytes more, log on to support.cadence.com and select the learning section to choose the training videos, as shown below.

DFT Synthesis Flow with Genus Synthesis Solution

First, we will understand the Synthesis Flow with DFT in the Genus Synthesis Solution:

Understanding a Script File that Used to Run the Synthesis Flow With DFT

Here, we will show you "How to run the Test Synthesis Flow to Insert Scan Chains and Improve the Testability of a Design" in the Genus Synthesis Solution:

Running Test Synthesis Flow to Insert Scan Chains And Improve the Testability of a Design in the Genus Synthesis Solution

Let's check the flops marked with the dft_mapped attribute for scan mapping in Genus Synthesis Solution:

How to Check Flops Marked With dft_mapped Attribute For Scan Mapping in Genus Synthesis Solution?

How to Find Non-Scan Flops of a Design in Genus? (Video)

Once the flops are mapped to scan flip flops and the scan chain inserted, we will see how to handle the flops marked with the dft_dont_scan attribute for scan mapping in Genus Synthesis Solution.

How to Handle the Flops Marked With the dft_dont_scan Attribute For Scan Mapping in Genus Synthesis Solution?

Here, we will see how to fix DFT Violations using the command fix_dft_violations:

Fixing DFT Violations (Video)

Once the design has been synthesized, let's explore the DFT design hierarchy in Genus Stylus CUI:

Exploring DFT Design Hierarchy in Genus Stylus CUI (Video)

Understand why sequential elements are not mapped to a scan flop:

Why Are Sequential Elements Not Mapped to a Scan Flop?

Explore hierarchical scan synthesis in Genus Stylus Common UI:

Understanding Hierarchical Scan Synthesis in Genus Stylus Common UI. (Video)

To understand how to resolve different warnings and errors (for example, DFT-415, DFT-512, DFT-304, etc.) in Genus Synthesis Solution, here are some videos you can refer to:

How to Resolve Warning: DFT-415 (Video)

How to Resolve Error: DFT-407 (Video)

How to Resolve Error: DFT-404 (Video)

DFT-510 Warning During Mapping (Video)

How to Resolve Warning: DFT-512 (Video)

How to Resolve Warning: DFT-511 (Video)

How to Resolve Warning: DFT-304 (Video)

How to Resolve Warning: DFT-302 (Video)

How to Resolve Error: DFT-515 (Video)

How to Resolve Error: DFT-500 (Video)

Here, we will see how we can generate SDC constraints for DFT constructs for many scan insertion techniques, such as FULLSCAN, OPCG, Boundary Scan, PMBIST, XOR Compression, SmartScan Compression, LBIST, and IEEE 1500:

How to Generate SDC Constraints for DFT Constructs in Genus Synthesis Solution? (Video)

Explore advanced testability features that can be inserted in Genus Synthesis Solution, such as Boundary Scan, Programmable Memory built-in Self-Test Logic (PMBIST), Compression Logic, Masking, and On-Product Clock Generation Logic (OPCG):

Advanced Testability Features (Video)

To understand What the IEEE 1500 Wrapper and its Insertion Flow in Genus Synthesis Solution, follow the bytes:

What Is IEEE 1500 Wrapper? (Video)

IEEE 1500 Wrapper Insertion Flow in Genus Synthesis Solution (Video)

Understand the On-product Clock Generation (OPCG) insertion flow in Genus Synthesis Solution Stylus CUI with this byte:

Understanding On Product Clock Generator (OPCG) Insertion in Genus Stylus CUI (Video)

To debug DFT violations, you can use DFT Analyzer from Genus GUI and explore its features here:

Debugging Using GUI: DFT Analyzer (Video)

Exploring DFT Analyzer View of Genus Synthesis Solution GUI (Video)

To understand What is Shadow Logic, How to Insert Test Points, How to do Testability Analysis Using LBIST, and How to Deterministic Fault Analysis in Genus, follow this article:

What is Shadow Logic

To insert the Boundary Scan Logic in and control Boundary Optimization in Genus Synthesis Solution, refer to these small bytes:

How to Insert Boundary Scan Logic in Genus? Video)

Controlling Boundary Optimization in Genus Synthesis Solution Stylus CUI (Video)

Compression techniques are used during scan insertion to reduce the test data volume and test application time (TAT) while retaining the test coverage. To understand what compression and the compression techniques are, watch this article:

What is Compression Technique During Scan Insertion? (Video)

Interested to know what "Unified Compression" is? To get the concept, you can watch this small demo:

What Is Unified Compression? (Video)

To Explore More, Register for Online Training

• Log on to Cadence.com with your registered Cadence ID and password.
• Select Learning from the menu > Online Courses.
• Search for "Test Synthesis with Genus Stylus Common UI" using the search bar.
• Select the course and click "Enroll."

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