OrCAD Layout ADVANCED, RULES-DRIVEN PCB DESIGN FOR SIMPLE TO COMPLEX PRINTED CIRCUIT BOARDS KEY FEATURES FOR ORCAD LAYOUT: OrCAD® Layout® offers PCB designers and design teams the power and flexibility to create and share data and constraints • Grid-based 16-layer autorouter across the design flow. OrCAD Layout delivers all the capabilities • Grid-based auto-interactive routing designers need from netlist to place-and-route to final output. • Grid-based push-and-shove • Grid-based single layer autorouting The ease-of-use and intuitive capabilities of OrCAD Layout provide • Automatic test point generation for quick startup and rapid learning right out of the box. • Automatic ECO • Intelligent copper pour OrCAD Layout incorporates a spreadsheet- INTER-TOOL COMMUNICATION STREAMLINES • Design reuse based constraint management system that THE ENTIRE BOARD DESIGN PROCESS gives designers easy access to board rules. • Routing density display Many problems in PCB design can be traced to Powerful floorplanning and advanced place- incorrect component information or poor commu- • Pro/ENGINEER, SDRC, Solid Edge (IDF 2.0) ment functionality provides greater control nication between engineers and board designers. interface over component placement. Auto-interactive Specifying an obsolete component or one that has • Gerber RS-274D, extended Gerber (274X) routing is ideal for hand-routed designs. The an unexpectedly long lead time can result in output design rule checking (DRC) route engine easi- expensive rework. Even a simple communication ly pushes and shoves vias and traces, avoid- • GenCAD, GenCAM interface error can trigger an extra board turn and delay a ing routing obstacles. Intelligent copper pour project significantly. This can happen, for exam- • IPC-D-356 interface supports mixed-voltage power planes. Both ple, when a designer changes an IC package or • ODB++ interface batch DRC and online DRC are available. the wattage of a resistor without changing the Online DRC checking can be toggled on or corresponding PCB footprint and company part • 68 x 68 inch maximum board size off and works in conjunction with the auto- number. Such errors are easy to miss, especially • 30 total layers interactive router. Additionally, you can choose when design teams communicate via email mes- from standard reports or create customized • 16 simultaneous routing layers sages and handwritten notes. If discovered early reports to suite your individual needs. Intuitive in the design process, these errors can be easily • 8,000 components per board post-processing tools with an output preview avoided. If discovered after the board has been • 10,000 nets per board provide quick and error-free output. OrCAD fabricated, assembled, or shipped in a product Layout is ideal for individuals and small to • 32,000 connections per board these problems are far more expensive to correct. medium design teams creating printed circuit Through the CIS Option for OrCAD Capture and • 16,000 connections per net boards from prototype to production. its tight integration with OrCAD Layout, you can • 8,000 different component symbols per board eliminate these types of errors. You start the • 3,200 pins per component INTEGRATION WITH ORCAD CAPTURE board design process with up-to-date and reliable AND CAPTURE CIS SCHEMATIC TOOLS component information, enabling you more cor- • 1,000 different padstacks rect first-pass designs that will streamline your Component properties, pin properties, and net • 250 different via types process to meet critical product release windows. properties can be assigned in OrCAD Capture® • 250 characters per reference designation or OrCAD Capture CIS and then passed to • 250 characters per net name OrCAD Layout. Inter-tool communication sup- AUTOMATIC ECO AND BACK ANNOTATION ports cross-probing of components and nets • 1/60 mil or 1 micrometer base resolution When you implement changes to connectivity, between OrCAD Capture and OrCAD Layout. component information, or design constraints in • 1/60 (1 minute) degree component rotation You can specify spacing rules, flag critical the schematic, the AutoECO feature detects the nets, and specify other key design constraints change and processes it as an ECO. OrCAD on the schematic and pass that information to Layout also passes changes in reference designa- OrCAD Layout. AutoECO forward annotates all tors, pin, and gate swaps, along with physical changes made in the schematic to the board component placement information, back to the while back annotation performs a full database schematic. comparison and creates a back annotation file containing changes made in the board data- base to the schematic. Bi-directional property passing allows board-level design rules to be passed back and forth. COMPONENT PLACEMENT AUTO-INTERACTIVE ROUTING Components can be grouped into clusters based Interactive routing in OrCAD Layout offers power- on connectivity. These “super components” allow ful functionality and user interactive features. Use you to work with fewer objects, providing a high auto-path mode to select individual connections level view of the overall placement strategy. and steer a route interactively, with automatic Component grouping makes it easy to move shoving and clearing of surrounding tracks. Use components as a single object, simplifying the auto-completion mode to steer a partial route, creation of identical circuits. Group assignment then let the autorouter complete it for you. can be done at the schematic or board level. Activate push/shove routing to steer routes inter- Components can be dropped into a heavily popu- actively through congested areas as the router lated area of the board and the “auto-shove” clears a routing path, while observing DRC functionality automatically shoves other compo- requirements. nents out of the way to make room. This is done with full DRC control. Component locking/fixing temporarily or permanently prohibits components GRID-BASED AUTOROUTER from being moved. Component locations speci- The autorouter in OrCAD Layout is especially fied from within OrCAD Capture or OrCAD useful when boards consist of similar-pitch Capture CIS can be imported. Keep-in and keep- components. The built-in, 16-layer, grid-based out areas can be defined by component group or autorouter with push/shove capability, routes by height for floorplanning. Complete mechanical simple designs quickly with high-speed and high information, including all necessary floorplanning completion rates. Push/shove technology mini- The intelligent copper pour is not segment-based so it won’t constraints from systems such as Pro/ENGINEER mizes vias and allows higher routing density. create unconnected islands or other undesirable artifacts and SDRC I-DEAS, can also be imported. It finds the optimal route for a track and then modifies existing routes and vias to clear space SPECCTRA INTERFACE while adhering to all design rules. MANUAL ROUTING/EDITING The SPECCTRA® for OrCAD autorouter interface is T-routing allows you start or stop routing on a embedded in the autorouting selections of OrCAD pad, via, or track segment. Track width can be AUTOMATIC FANOUT Layout, providing a seamless interface to the quickly changed on-the-fly during the routing An increasing number of designs today call for autorouter. The interface allows users to easily process. Segment editing allows you to slide seg- BGA and micro-BGA packages. OrCAD Layout move PCB data and constraints to and from the ments, under DRC control, quickly pushing seg- automatically creates the complex interconnect SPECCTRA autorouter. SPECCTRA for OrCAD is ments together to maximize available board real these devices require. Fanouts can also be creat- tightly coupled with OrCAD PCB Editor, providing estate. Sliding segments will jump over obstacles ed for individual components or for an entire a rapid and seamless path for design autorouting. to valid locations. Segment splitting divides an board. Users have control over the fanout dis- Routing strategy and setup is performed directly existing segment into two segments or easier tances, the ability to share/not share fanout vias, inside OrCAD PCB Editor using router setup manipulation. Complete tracks can be moved to and control of fanout direction, either inside or dialogs. The interface then takes the defined rout- another layer under DRC control. outside of a component. ing setup, strategy, and all the design rules, and executes the router in a batch mode. The router’s progress can be tracked interactively from within OrCAD PCB Editor. Once the routing strategy is completed, the routed interconnect is automatic- Layout ally imported back into OrCAD PCB Editor. Routing functions can be performed on a single net, a group of nets, or the whole design, allow- Bidirectional OrCAD Layout Interface ing for the maximum in routing flexibility. Floorplans, height SPECCTRA for OrCAD keep-outs 3D models Mechanical CAD: COPPER POUR, POWER PLANES, Pro/E, SDRC, CATIA Bi-directional AND COPPER AREAS Interface Manufacturing Output: Gerber/NC Drill, GenCAM/ AutoECO, Verified GenCAD, pick & place reports cross-probing Netlists Intelligent copper pour fully supports split-power Capture CIS and ground planes. Connections to the copper pour will only be created if the voltages of the pin CIS Internet Purchasing/ Fabrication, and copper match. Copper pours can be overlaid Component Assistant Orcad CIS Part Manager Inventory Assembly & Test Capture and controlled with a Z-order rule which specifies the pouring order of the individual