tag: Routing

Why Curvy Design Now? Less Change Than You Think And Manufacturable Today
By Jan Willis - 19 Oct, 2023 - Comments: 0

A curvilinear (curvy) chip, if magically made possible, would be smaller, faster, and use less power. Magic is no longer needed on the manufacturing side, as companies like Micron Technology are making photomasks with curvy shapes using state-of-the-art multi-beam mask writers today. Yet the entire chip-design infrastructure is based on the Manhattan assumption of 90-degree turns, even though i... » read more

RL-Guided Detailed Routing Framework for Advanced Custom Circuits
By Technical Paper Link - 19 May, 2023 - Comments: 0

A technical paper titled "Reinforcement Learning Guided Detailed Routing for Custom Circuits" was published by researchers at UT Austin, Princeton University, and NVIDIA. "This paper presents a novel detailed routing framework for custom circuits that leverages deep reinforcement learning to optimize routing patterns while considering custom routing constraints and industrial design rules. C... » read more

Advanced Auto-Routing For TSMC InFO Technologies
By Paul McLellan - 08 Dec, 2022 - Comments: 0

At the recent TSMC OIP Symposium, John Park presented 'Advanced Auto-Routing for TSMC InFO Technologies.' InFO stands for "integrated fanout" and is the lower performance, lower complexity technology for advanced packaging. For details of TSMC's whole packaging portfolio, see my post TSMC OIP: 3DFabric Alliance and 3Dblox. Here's the slide TSMC presented from that presentation on InFO. As you... » read more

A New Way To Create Structures
By Tyler Lockman - 11 Feb, 2021 - Comments: 0

Let’s focus today on an established routing technology with a new twist! All of you are doubtless familiar with the concept of structures – formerly called via structures, renamed to structures because of their growing flexibility and application across many flows. These handy, reusable blocks of routing allow you to quickly fan out the most complex of component interfaces. And, after that,... » read more

Analog Chip Layout: Creativity Vs. Deadlines
By Benjamin Prautsch - 10 Sep, 2020 - Comments: 0

The entire design of integrated circuits, from the specification onward, depends on successful validation by measurement of microchips. One key milestone in this process is the completion of the layout. However, the path to reach this point can be quite difficult as many iterations are usually required. It includes: Iterations with the customer to finalize the specification. Iteratio... » read more

Establishing Connectivity Between Die and BGA
By Tyler Lockman - 03 Sep, 2020 - Comments: 0

The BGA component serves the primary role of redistributing the signals from the die it protects to an interface pattern (the BGA’s balls) compatible with the host PCB it mounts on. As a result, many IC package designs are among those who do not use a front-end schematic. Even if you have a schematic, you may find yourself making logic swaps in the layout where the additional context of the r... » read more

Make Acute Angles A Sharp Problem Of The Past
By Tyler Lockman - 13 Aug, 2020 - Comments: 0

Sharp angles, whether they create a spike in a poured shape or form an acid trap between two different pieces of metal, are a problem for us all. As designers, we will go out of our way to try and avoid creating these situations; they will still creep into your design despite the best of intentions. How, then, can you efficiently rid your design of them with the minimal change to your routin... » read more

Best Practices And Constraint Management Tools Speed RF Design For The IoT
By Jim Martens - 06 Aug, 2020 - Comments: 0

By Jim Martens and David Zima The IoT has increased the demand for good radio frequency (RF) design practices from the mains, to wall outlet power, all the way to the antenna. With several IoT standards employed today, constraint management has become critical to ensuring that designs meet product performance and reliability. Even the simplest of IoT designs can benefit from constraint ma... » read more

Choosing Between Static and Dynamic Shapes
By Tyler Lockman - 14 May, 2020 - Comments: 0

That title might be a touch misleading. We’re not here to talk about why to convert shapes between static and dynamic. Rather, I want to talk about why you should NOT be doing this. Every design has some conductor shapes in it (or at least a very large percentage of them). What style to use is a choice that will impact performance through your entire flow; let the shape’s purpose guide you.... » read more

Don’t Get Stranded On Islands, Delete Them
By Tyler Lockman - 02 Apr, 2020 - Comments: 0

No, this isn’t a Hollywood movie. We’re talking about pieces of plane shapes with no connections to them, not an idyllic private oasis in the Caribbean (sorry). Removing shape islands is something you’ve always been able to do in the Allegro layout environments, but the flow for achieving this has improved significantly in recent years. Come with us, and we’ll compare what the flow u... » read more

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