User manual CADENCE DESIGN SYSTEMS CADENCE DESIGN CREATION DATASHEET

[. . . ] Cadence design creation technology for advanced PCB systems is available in the following product offerings. · CadenceAllegroSystemArchitectGXL --the industry's first multi-style design creation environment to provide the flexibility and power to create complex system designs using a combination of multiple styles (spreadsheets, traditional schematics, or HDL/Verilog language) · CadenceAllegroDesignEntryHDL LandXL--acomplete, scalable, schematic-based solution for creating PCB and IC package schematics These products enable a constraint-driven flow and provide extensive support for team design and design reuse. Both are tightly integrated with the Allegro constraint management system and the Allegro PCB Editor. BEnEFitS · Shortenstimetocreatedesigns · Allowsschematicdesignersandlayout engineers to work in parallel · Reducesdesignspinsviaaproven, constraint-driven flow · Providesspecialsupportfornet classes, buses, extended nets, and differential pairs · Reducesreworkandpreventserrorsby supporting flexible design reuse · Integrateswithdigital, analog, and pre-layout SI simulators · Reducestotalcostofownership through enterprise deployment support · Providesafullyvalidatedflowwith Allegro PCB Editor · Supportedbyapowerfullibrary creation and management solution · Offersscalabilityascomplexitygrows separately. [. . . ] Almost all programs and utilities can be run from the command line, making script-based automation possible. All program options can be controlled by the project file, allowing users to launch and run programs from within their customized workflows. Designers can write their own custom rule checks and deploy them. DESiGn rEUSE SUPPort Most designs start from other designs or reuse significant parts of other designs. Cadence design creation technology gives designers multiple choices for reuse, so they can select the most effective design reuse approach for their design. Sheets from old designs, blocks, or entire designs can be reused, which reduces rework and errors. Engineers can begin a new design using an older design, as seen using the Copy Project utility. Designers can copy single or multiple sheets from one design to another using the Import Sheet UI, or just copy/paste special circuitry between different designs. Designers can reuse electrical constraints as part of a block or by using ECSets. The technology further allows designers to create reused blocks and place them in a library for use in other designs, just as with components. The connectivity, constraints, and layout from each block can also be reused. The same block can be used multiple times in the same design without renaming or copying. (See Figure 1. ) FEAtUrES ConStrAint-DriVEn DESiGn Integration with the Allegro® constraint management system makes capturing physical and electrical constraints easy and communication of constraints reliable. In addition to simple nets, the system understands other design objects including net classes, buses, extended nets, differential pairs, and matched groups. It allows reuse of constraints--within and across designs--by using electrical constraint sets (ECSets). Constraint values between the schematic and layout can be compared using Design Differences and changes communicated in either direction. This feature is extremely useful when board layout is outsourced, as constraints are created by design engineers and compliance must be ensured after layout. The spreadsheet-like system allows users to capture all electrical constraints within the design database, eliminating the need to communicate constraints and design data FLoW VALiDAtion Cadence design creation technology is fully integrated within the Allegro platform to ensure seamless data flow and integration. In contrast to multivendor environments, constraint and logic transfer from logical to PCB design, backannotation of data from layout, and many other aspects of the flow are tested routinely and thoroughly with every release. [. . . ] The spreadsheet editor understands special differential terminations in addition to terminations for single-ended nets. The spreadsheet editor automatically detects differential pairs and buses on components, accelerating design with large-pin-count devices. allows designers to use existing design relationships in queries and export reports in various formats including HTML, CSV, and tab-separated text. These editable design report files also include the ability to cross-probe to nets and components in the design. [. . . ]