DDRx Interface Design

DDRx Interface Design

HyperLynx automatically analyzes complete DDR/LPDDR 3/4/5 interfaces for compliance with signal integrity and timing requirements. HyperLynx automates what other tools can do only manually, guiding users step-by-step and adjusting the analysis flow based on the DDR and controller technologies used.

HyperLynx DDRx Design and Verification

DDR interfaces are some of the most complicated parallel interfaces in use today. Complete validation of DDRx interfaces requires hundreds of signal integrity simulations and thousands of detailed measurements, followed by a comprehensive analysis of all signal quality requirements and signal/group timing relationships. Traditional signal integrity batch-mode tools just aren’t up to the task.

HyperLynx DDRx capabilities
HyperLynx streamlines DDRx design by dramatically reducing simulation setup time while providing accurate detailed results that include the effects of lossy transmission lines, reflections, impedance changes, vias, ISI, crosstalk, via-tovia coupling, SSN, and timing delays. With HyperLynx DDRx, you can fast track design decisions, improve engineering efficiency, and accelerate time to market.

Powerful, automated HyperLynx DDRx simulation
HyperLynx DDRx provides powerful integrated signal integrity, crosstalk, and timing analysis that significantly reduces design and debug cycles for PCBs with DDR memory. Benefits include:

Powerful modeling and simulation
Comprehensive HTML results reporting
Automated workflow using wizards to guide through process
Post-route analysis / full interface level verification
Pre-route analysis to drive design restraints
Power-aware analysis

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KEY FEATURES

Powerful, Automated DDRx Simulation

HyperLynx provides a complete flow for DDRx EM modeling & simulation that understands protocol and component-specific requirements. Actual operating design margins are clearly reported in mV and pS, enabling designers to quickly determine if their design will pass or fail and by how much.

Automated Post-layout Verification

Post-layout analysis automatically extracts detailed interconnect models from layout based on the user’s selections of nets to simulate and crosstalk settings. The resulting models are automatically simulated to determine the design’s compliance with protocol and component-specific signal integrity and timing requirements. Automated post-layout verification supports both single and multi-board designs.

Pre-layout Design Exploration

HyperLynx lets designers evaluate alternatives to optimize for cost and performance while ensuring the design meets stringent signal integrity and timing requirements. Designers can assess the relative impacts of trace length, impedance, routing layer, spacing, and relative length, in addition to via design, drive strength, receiver termination and more to determine the right combination for their design.

Unified, Automated Analysis Workflow

HyperLynx provides a single, consistent workflow for pre- and post-layout simulation. Performing the same analysis, the same way, with the same output reporting allows designers to compare post-layout verification results to their pre-layout counterparts to determine if layout rules were followed correctly. Where results differ, HyperLynx “what if” analysis helps designers find and resolve issues quickly.

Comprehensive Design Margin Reporting

HyperLynx provides DDRx signal integrity and timing results in a comprehensive report that can be shared with others. All signal relationships are covered, including data read/write, address and clock/DQS. Design margins are reported in mV and pS, linked to waveforms that show how critical measurements were made. The report includes links to eye diagram displays that can be examined interactively.

Advanced Analysis Support

HyperLynx accurately analyzes high-speed, densely routed DDR designs. Post-layout crosstalk automatically includes aggressors based on user-defined coupling thresholds. Power-Aware analysis integrates 3D EM modeling to include PDN effects like SSN and non-ideal signal return paths. DDR5 analysis supports IBIS-AMI models and accurate models the impact of rise/fall asymmetry on design margins.