Integrated PCB Design Simulation and Analysis Software

CR-5000 Lightning

CR-5000 Lightning - Screenshot

As an integral part of the CR-5000 tool suite, CR-5000 Lightning is the key to getting rapid, accurate results, coupled with first-rate signal integrity and EMC. This powerful PCB design simulation and analysis software allows you to realize your PCB design more rapidly, while maintaining signal integrity (SI) and EMC. You can carry out simulation and routing according to the application constraints and share information via a single constraint database. The front-loaded design and analysis that is facilitated by CR-5000 Lightning means you can reduce design cycle time by weeks. High-speed design issues are resolved early, not by find-and-fix, through tools designed for carrying out complex routing and analysis in a straightforward, efficient manner.

The direct simulation links, Lightning Si-Prolog and Lightning SI-Epilog, embedded within Design Gateway and CR-5000 Board Designer, enable you to check simulation results for both proposed and routed net topology instantly, without switching applications.

Front-loaded design and analysis yields first-rate quality and shortest overall design cycles. Using the completely integrated approach for high-speed PCB design that CR-5000 Lightning provides, you benefit from unified and shared design constraints, eliminating complexities associated with separate design and control for activities such as circuit design, floor planning and routing. Synchronization of common analysis engines, editors and viewers makes a front-loaded design and analysis process easy to achieve.

Routing symmetry, and the resulting electrical symmetry, makes electrical performance predictable and reliable. New routing features have been pioneered in Lightning with the introduction of concepts such as trunking and intelligent design objects.(IDOs). Trunking lets you route buses, groups of signals and differential pairs on multiple layers as single intelligent objects, thus maximizing routing symmetry and minimizing skew. Connections to component pins at trunk ends can be autorouted dynamically, and adapt in real time to your interactive trunk routing. You can easily connect other signals to a trunk using intelligent T-in and T-out. IDO’s are also used for lengthening patterns; you can reshape them, automatically avoiding obstacles, while maintaining the correct delay. Designing tightly constrained, balanced H-trees becomes a straightforward process using the H-tree router, which provides an interactive routing solution for this commonly used topology. Length and skew control is achieved using the new interactive lengthening tool which maximizes the exploitation of available real estate.

Lightning integrates Zuken's industry-leading router with powerful simulation tools to enable fast and efficient design of high-speed electronic products. Its in-depth analysis and what-if capabilities, available throughout the design process, allow you to conduct trade-offs between SI parameters such as crosstalk, timing or EMI requirements against mechanical and thermal constraints. Additionally, EMC and power integrity analysis are possible at the routing stage, with easy-to-interpret feedback directly into the routing application, such as the color-coded voltage map showing possible unwanted antennas.

Why Lightning?

The increase in electronics design complexity resulting from a growth in density, miniaturization and multi-functionality of products has resulted in a mass rise in high-speed, high pin count devices that create parasitic effects and routing congestion, driving the requirement for designers to be skilled in high-density interconnect design and manufacturing processes.

At the same time, the need to achieve front-loaded, right-the-first-time design means you need consistent applications and analysis from pre-design what-if scenario analysis right through to finished board.

Zuken has based this high-speed design environment on the following key concepts, necessary for effective, timely, and reliable creation of high-speed designs:

1. Unified Constraints

Unified ConstraintsUse of unified and shared design constraints eliminates the complexities associated with separate constraint sets and provides control for activities such as circuit design, floor planning and board layout.

2. Process Orientated

Unification and communication between board design and system design with high-speed constraints and analysis enables a process-oriented method of development.

3. Unified Analysis Engine

Sharing the same analysis engine throughout ensures consistency and compatibility of results, eliminating mistakes due to misinterpretation of differently-presented data.

4. Frontloaded Verification

Frontloading of verification improves design quality and faster time to market. In addition to SI analysis at all stages of design, EMC and power integrity analysis are possible at the routing stage. Problems previously impossible to check until prototyping can be verified and resolved one or two stages earlier – bringing quality forward in your process. This not only assists engineers to meet important electrical and mechanical constraints, but also speeds up the process to final product specification. Design parameters are followed throughout the design process to ensure manufacturability.

5. Combined Technology

Combined unique technology provides effective handling of complex multi-board designs at the system interface level, meaning the design of items such as cross-board differential pairs can be verified concurrently with board design.

Using conventional know-how is no longer enough to achieve designs that meet specifications demanded by global customers. Gaining the knowledge and experience to be an expert high-speed designer can take years. Having the technology that is at the cutting edge of innovation will help you adapt to the challenges of today and prepare for those of tomorrow.

A range of add-on modules for CR-5000 Lightning are available, including:

Scenario Editor

Provides a “what-if” scratchpad to test and verify various topology and termination schemes on virtual or existing single-ended, coupled, or differential signals in schematic or physical layout.

Topology Editor

Uses the same graphics and interaction as the Scenario Editor but instead of creating scenarios it is used to constrain net topology (physical connection patterns). It allows you to assign pre-defined topologies, apply templates you defined in Scenario Editor, or define custom connection patterns.

Configuration Editor

Configuration Editor is used for editing and solving impedance and other electrical characteristics of track cross-sections. You can characterize transmission lines visible in the Scenario Editor or Topology Editor, modify the conductor and dielectric cross-sections and solve for simulation using an advanced Field Solver. You can extract cross-sections from a physical design and save your own arrangements as templates. Configuration Editor allows you to evaluate the effects of proposed layer stacks, track widths and track-to-track spacing before physical layout.

SI Simulation

Accurate simulation is seamlessly integrated in Lightning to provide pre-design, concurrent and post-layout verification for signal integrity, including eye diagram generation for high-speed differential and single-ended communications channels. It uses an accurate transmission line simulation approach to analyze reflection and crosstalk effects, and to calculate the relevant timing information and delays. It can be used interactively to analyze selected nets as well as in batch mode for complete PCB sign-off simulation.

Lossy transmission line parameters (phase velocity, inductance and capacitance matrices, characteristic impedances) are determined by a 2D field solver. Time domain simulation is used to generate detailed waveforms including the effects of line loss, coupling and packaging. You can compare test load (nominal load) results with actual to see if your routing has moved out of the nominal response envelope. Frequency-domain simulation, within the same environment, lets you generate input such as S-Parameters parameters for external tools.

Parameter sweep can be used to experiment with values of passive devices or lengths of transmission lines in order to determine the optimal values to meet performance requirements. A representation of all waveforms can be exported to XML or CSV, enabling results review in MS-Excel or other tools.

Powerful functionality is available to define multi-bit stimulus bit patterns including Jitter with Gaussian or Uniform distribution, duty cycle, and pre-defined coding schemes. Simulation results are represented as time domain waveforms or eye diagrams. Automatic and interactive measurement on simulation results, with snap to both data and graphic points is provided so you can compare them precisely with pre-defined constraints. Enhanced via modeling includes the effects of resistance, capacitance and inductance, crucial for designs featuring sub-one-nanosecond transition times.

Simulation Library Manager

Used for adding and editing behavioral models. You can import IBIS (see http://www.eigroup.org/ibis/ibis.htm) standard device models and Electrical Board Descriptions (EBDs) or easily define your own board and device models. You can map to device models and EBDs in your master library or use simple mouse click selection in the Constraint Manager. You can also define passive circuit models including resistors, capacitor, inductors and transmission lines for items such as low-pass filters.


Additional options

Lightning P.R.Editor

Zuken has been at the forefront of routing technology for more than two decades . A combination of the world’s first graphical grid-free routing algorithm technology refined and optimized to deliver 100% routing completion, P.R.Editor XR significantly reduces your design cycle time and increase your productivity providing the options of manual, interactive and automatic component placement and routing capabilities.


Lightning Power Integrity Advance

Power Integrity Advance provides fast and practical power integrity (PI) and electromagnetic interference (EMI) analysis embedded within CR-5000 Lightning, during PCB layout, within your real-time PCB design flow.