Cadence PCB Design Solutions

Complex physical and electrical rules, high-density component layout, and higher high-speed technology requirements have all increased the complexity of today's PCB design. No matter at which stage of the design process, designers need to be able to easily define, manage and confirm simple physical/spacing rules and critical high-speed signals. At the same time, they must ensure that the final PCB meets the performance goals that can be achieved by traditional manufacturing and test specifications.

CADENCE PCB design solution can provide a complete design environment for solving and realizing highly difficult designs closely related to manufacturing. This design solution integrates all the design processes needed from design conception to final product, including design input component library tools, PCB editors and an automatic/interactive wiring machine, as well as interfaces for manufacturing and mechanical CAD. As the difficulty and complexity of the design increase, a unified database architecture can be used to provide fully scalable PCB solutions for the Cadence OrCAD and Allegro product lines using models and libraries, accelerating your design speed and expanding the design scale, thereby improving design efficiency, shortening the design cycle, and achieving mass production faster.

Cadence PCB design solutions are integrated into the following products:

Cadence Allegro PCB Design LXL and GXL

Cadence OrCAD PCB Designer、Cadence OrCAD PCB Designer with PSpice以及Cadence OrCAD PCB Designer Basics

Cadence OrCAD EE Designer 和 Cadence OrCAD EE Designer Plus

advantage

A reliable, scalable, cost-effective PCB editing and routing solution that evolves with your design needs

Provides a complete interconnect environment from basic/advanced placement and routing to strategic planning and global routing

Speed ​​up high-level design using high-speed rules/constraints

Includes a comprehensive set of features

Includes a front-end to back-end constraint management system for constraint creation, management, and validation

Improving design efficiency through application software integration

It can realize close integration from front end to back end

Features

PCB Editor Technology

PCB editing environment

The core of Cadence PCB design solution is PCB editor, which is an intuitive, easy-to-use, constraint-oriented environment that facilitates users to create and edit PCBs from simple to complex. Its extensive combination of functions solves various problems existing in today's design and manufacturing. The PCB editor provides powerful and flexible layout planning tools. The PCB design segmentation technology based on the Allegro platform provides synchronous design functions, which can shorten the wiring time and accelerate the product to market earlier. The powerful shape-based routing pushing function brings a highly productive interconnection environment, while displaying the length and timing tolerance in real time. The dynamic copper plating function provides real-time ground filling and repair functions during placement and routing iterations. The PCB editor can also generate a full set of film processing, bare board assembly and test output, including Gerber274x, NC drill and various formats of bare board testing, see Figure 1.

Constraint Management

The constraint management system displays the physical/spacing and high-speed rules and their status in real time. Depending on the current state of the design and applicable to any stage of the design process, each worksheet provides a spreadsheet interface that allows users to define, manage and confirm different rules in a hierarchical manner. This powerful application allows designers to create, edit and evaluate constraint sets graphically as a graphical topology, which can be used as an electronic blueprint for the ideal implementation strategy. Once the constraints are submitted to the database, they can be used to drive the placement and routing process of signal lines. The constraint management system is fully integrated into the PCB editor, and the constraints can be confirmed in real time as the design process proceeds. The result of the confirmation process is a graphical representation of whether the constraints are met. Satisfied constraints are displayed in green, and unsatisfied constraints are displayed in red, which allows designers to see the progress of the design in a timely manner, as well as the impact of any design changes in the spreadsheet.

Layout planning and layout

Constraint and rule-driven approaches facilitate powerful and flexible layout capabilities, including interactive and automatic component placement. Engineers or designers can assign components or subcircuits to specific areas during the design entry or floorplanning phase. Components can be filtered or selected by REF, package type, related signal name, part number, or schematic diagram/page number. Today's circuit boards have thousands of components that require precise management. Through real-time device assembly analysis and feedback, it is possible to consider and meet EMS rules when assembling devices as a whole to improve the designer's design speed and efficiency. DFA (Design for Assembly) Analysis. Allegro PCB Design XL and GXL provide real-time DFA rule checking during interactive component placement. Based on a two-dimensional spreadsheet of device type and package arrangement, DFA can check in real time whether the device's edge-to-edge, edge-to-end, or end-to-end distance violates the minimum requirements, allowing PCB designers to place components synchronously to achieve optimal routability, producibility, and signal timing requirements.