Mentor Paper: Using HyperLynx DDR Wizard for QDR-IV

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The quad data rate IV (QDR-IV) memory interface protocol is used for reduced-latency applications. It features two independent bi-directional data channels, each running at double data rate (DDR).

Mentor Graphics’ newest white paper walks PCB designers through several ways to capitalize on the benefits of the DDRx Wizard batch simulation to validate the QDR-IV bus. This PDF is available for download by clicking here.

02/19/2021 | Andy Shaughnessy, Design007 Magazine

No issue on footprints and library management would be complete without input from a component distributor. I recently interviewed Geof Lipman of Octopart; as director of operations for part data, he’s one of the brains behind the entire site. Geof explains how Octopart functions and manages millions of component data points, and he also discusses the current landscape of electronic components.

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The library management of footprints, land patterns, or cells—however you refer to them in your ecosystem—is one of the most critical items in the foundation of any PCB or CCA design. When I was asked to write an article on this topic, so many thoughts and experiences instantly flooded my mind. After 30+ years of designing PCBs throughout the industry, I have my share of experiences and stories about footprints. One particular experience stands out.

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Hard to believe that a year ago, I was getting ready to attend DesignCon and IPC APEX EXPO and wondering if this Novel Coronavirus was going to cut into attendance from the Pacific Rim. Now, we’re accustomed to virtual trade shows. They’re not ideal, but they’re the best we can do while meeting in person is not possible. We’ve learned to adapt.