User manual CADENCE DESIGN SYSTEMS CADENCE PCB DESIGN DATASHEET

[. . . ] Once they exist in the database, constraints can drive the placement and routing processes for constrained signals. The constraint management system is completely integrated with the PCB editor, and constraints can be validated in real time as the design process proceeds. The result of the validation process is a graphical representation of whether constraints pass (highlighted in green) or fail (highlighted in red). This approach allows designers to immediately see the progress of the design in the spreadsheets, as well as the impact of any design changes. FLOORPLANNINGANDPLACEMENT The constraint and rules-driven methodology of PCB design solutions includes a powerful and flexible set of placement capabilities, including interactive and automatic. [. . . ] This significant simplification over current design tools means users converge on a successful interconnect solution far faster and more easily than ever before, reducing design cycle time through increased efficiency and productivity. (See Figure 2. ) workarounds that address multi-user issues are time-consuming, slow, and prone to error. But PCB design partitioning technology (available in Allegro PCB design tiers) provides a multi-user, concurrent design methodology for faster time to market and reduced layout time. Multiple designers working concurrently on a layout share access to a single database, regardless of team proximity. Designers can partition designs into multiple sections or areas for layout and editing by several design team members. Designs can be partitioned vertically (sections) with soft boundaries or horizontally (layers). As a result, each designer can see all partitioned sections and update the design view for monitoring the status and progress of other users' sections. Such partitioning can dramatically reduce overall design cycles and accelerate the design process. INTERACTIVEETCHEDITING The routing feature of the PCB editor provides powerful, interactive capabilities that deliver controlled automation to maintain user control, while maximizing routing productivity. Real-time, shape-based, any-angle, push/shove routing enables users to choose from "shove-preferred, " "hug-preferred, " or "hug-only" modes. DESIGNPARTITIONING Globally dispersed design teams are on the rise, which compounds the challenge of shortening design cycle times. Manual www. cadence. com CADENCE PCB DESIGN: LAYOUT AND ROUTING 3 PCBAUTOROUTER TECHNOLOGY PCB routing technologies are tightly integrated with the PCB editor. Through the PCB Router interface, all design information and constraints are automatically passed from the PCB editor. Once the route is completed, all route information is automatically passed back to the PCB editor. Figure 3: Dynamic push-and-shove capabilities make interactive editing easy on even the most advanced designs Figure 4: Complete front-to-back solution for PCB RF design AUTOMATEDINTERCONNECT ENVIRONMENT Increased design complexity, density, and high-speed routing constraints make manual routing of PCBs difficult and time-consuming. The challenges inherent in complex interconnect routing are best addressed with powerful, automated technology. The robust, productionproven autorouter includes a batch routing mode with extensive user-defined routing strategy control as well as built-in automatic strategy capabilities. An interactive routing environment--featuring real-time interactive trace pushing and shoving--helps facilitate quick edits to traces. An interactive placement environment with extensive floorplanning functionality and complete component placement features eliminates the need to switch applications to make placement changes to optimize routing. By using the auto-interactive floorplanning and placement capabilities, designers can improve routing quality and productivity, which are directly related to component placement. In addition, an extensive rule set allows designers to control a wide range of constraints, from default board-level rules to rules by net/ net class and region rules. More important, Cadence supports the industry initiative toward Gerber-less manufacturing through its Valor ODB++ interface that also includes the Valor Universal Viewer. The ODB++ data format creates accurate and reliable manufacturing data for high-quality Gerber-less manufacturing. DYNAMICSHAPES Dynamic shape technology offers realtime copper pour plowing/healing functionality. Shape parameters can be applied at three different levels: global, shape instance, and object-level hierarchies. Traces, vias, and components added to a dynamic shape will automatically plow www. cadence. com CADENCE PCB DESIGN: LAYOUT AND ROUTING 4 Figure 5: Advanced autorouting technology effectively handles dense, highly constrained designs. AUTOROUTNG Advanced autorouting technology provides powerful, shape-based autorouting with fast, high completion rates. [. . . ] · Morethan25InternetLearningSeries (iLS) online courses allow you the flexibility of training at your own computer via the Internet. · SourceLink® online customer support gives you answers to your technical questions--24 hours a day, 7 days a week--including the latest in quarterly software rollups, product change release information, technical documentation, solutions, software updates, and more. DESIGNFORMANUFACTURING The design for manufacturing capability significantly improves manufacturing yields. Manufacturing algorithms provide a spreading capability that automatically increases conductor clearances on a space-available basis. Automatic conductor spreading helps improve manufacturability by repositioning conductors to create extra space between conductors and pins, conductors and SMD pads, and adjacent conductor segments. [. . . ]