SoC Integration Mistakes


Semiconductor Engineering sat down to discuss integration challenges with Ruggero Castagnetti, distinguished engineer at LSI; Rob Aitken, an ARM fellow; Robert Lefferts, director of engineering in Synopsys’ Solutions Group; Bernard Murphy, chief technology officer at Atrenta; and Luigi Capodieci, R&D fellow at GlobalFoundries. What follows are excerpts of that roundtable discussion. SE... » read more

Power Reduction Through Sequential Optimization


Dealing with power is a multifaceted challenge and is an equal-opportunity problem — everybody can contribute to the solution and at many levels of abstraction. At the architectural or system level, fundamental tradeoffs are done and the engineering team decides how much memory the system needs, what type of processor, what performance, area, power, among other things. Some people may use ... » read more

Hardware-Software Rift Persists


Last month Semiconductor Engineering published an article about power optimization and the roles of the hardware and software teams in reducing energy consumption. The article portrayed the hardware team adding lots of capabilities for power reduction, while the software team was not making full use of those capabilities. That article made the rounds in a couple of LinkedIn forums populated ... » read more

Heat Problems Grow With FinFETs, 3D-ICs


From high-end consumer devices to rack-mounted arrays inside of data centers, thermal issues are becoming more serious—and getting much more attention. Driving this shift is the move from single chips to 3D ICs, whether they are interposer-based or stacked die. It’s a well-understood challenge: Die stacking can cause thermal issues because of the lack of a readily accessible thermal diss... » read more

Which IP Is Better?


As the amount of third-party and re-used IP in a semiconductor increases, so do the number of questions about which possible IP choices perform better, use the least power, or work best with other components. So far, there is no simple way to make that choice. In most cases, this is simply splitting hairs. For all the IP that goes into designs, the bulk of it is chosen based on how often has... » read more

Mostly Accurate Computing


“Approximate computing” is a new concept in computers, allowing them to perform calculations for certain tasks that don’t require perfect accuracy with the goal of improving efficiency and reducing energy consumption. But do the concepts apply when it comes to managing power? And is there a philosophical approach when it comes to thinking about power management? To a large extent, that... » read more

Performance Still Trumps Power


When it comes to technology, the past was always simpler than the present and the future looks daunting. In part, this is because finding a solution to a problem allows us to discover the next problem. Over time, the previous problem becomes more understood and solutions improve to the point where it is no longer considered a problem. It was a fairly easy choice about how to implement functiona... » read more

Power’s Impact On Hierarchy Modification


RTL restructuring in which the logical hierarchy of a design is modified is usually done to manage complex designs. When power management is added to this task, new challenges crop up. Consider switchable power or voltage domains, which are a common way to manage power is to use switchable power or voltage domains. When implementing this technique, all the logic in such a domain must hang of... » read more

The Road Ahead For 2014


Semiconductor Engineering asked several thought leaders in the industry about the market drivers that are affecting their product planning operations for 2014. While almost everyone sees mobile devices continuing to be the major driver during 2014, there are some emerging areas that may start to have a larger impact. This article takes a look at some of those and the impacts they could have on ... » read more

The Path To Power Signoff Is Getting Longer


Signoff on power used to be a fairly simple check-the-box kind of activity. Even if power budgets weren’t exactly met, they could usually be fixed in future iterations of a chip, whether that involved derivatives or new revs of the same chip. A number of things have changed since the much simpler days of 45/40nm and above, however. Power is now a market differentiator. In many cases, i... » read more

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