Week In Review: Design, Low Power


Tools & IP Rambus debuted 112G XSR/USR PHY IP on TSMC's N7 7nm process. The PHY IP enables die-to-die and die-to-optical engine connectivity for chiplets and co-packaged optics targeting data center, networking, 5G, HPC, and AI/ML applications. It has been demonstrated in silicon to exceed the reach/BER performance of the CEI-112G XSR specification and supports NRZ and PAM-4 signaling at v... » read more

Week In Review: Auto, Security, Pervasive Computing


Security Many IoT devices have some of the 19 bugs known as Ripple20 vulnerabilities. Researchers JSOF discovered the security flaws in library produces by Treck, Inc., which is used in many IoT devices. Edge, cloud, data center Rambus delivered its 112G XSR/USR PHY IP on TSMC 7nm process (N7). The SerDes PHY was designed for chiplets and co-packaged optics (CPO) architectures that are des... » read more

High-Speed Signaling Drill-Down


Chip interconnect standards have received a lot of attention lately, with parallel versions proliferating for chiplets and serial versions moving to higher speeds. The lowliest characteristic of these interconnect schemes is the physical signaling format. Having been static at NRZ (non-return-to-zero) for decades, change is underway. “Multiple approaches are likely to emerge,” said Brig ... » read more

Blog Review: June 17


Mentor's Chris Spear provides an introduction to SystemVerilog Multidimensional Arrays and shares code samples to follow along. Cadence's Paul McLellan listens in on Sophie Wilson's 2020 Wheeler Lecture that traces the history of the microprocessor from the early days of Moore's Law through to increasing power and economic constraints that are causing a transition from general purpose to spe... » read more

Interconnect Challenges Grow, Tools Lag


Interconnects are becoming much more problematic as devices shrink and the amount of data being moved around a system continues to rise. This limitation has shown up several times in the past, and it's happening again today. But when the interconnect becomes an issue, it cannot be solved in the same way issues are solved for other aspects of a chip. Typically it results in disruption in how ... » read more

Week In Review: Design, Low Power


Synopsys acquired Qualtera, a provider of big data analytics for semiconductor test and manufacturing. Based in Montpellier, France and founded in 2010, Qualtera's Silicondash platform provides both off-line and in-line modules for data analytics, visualization, simulation, and modeling to allow for development of control strategies. Combined with Synopsys' TestMAX test automation solution, the... » read more

Week In Review: Auto, Security, Pervasive Computing


Edge, cloud, data center Programmable logic company Efinix used Cadence’s Digital Full Flow to finish Efinix’s Trion FPGA family for edge computing, AI/ML and vision processing applications, according to a press release. Last week Efinix also announced three software defined SoCs based on the RISC-V core. The SoCs are optimized to the Trion FPGAs. AI, machine learning Amazon will tempo... » read more

Aging Problems At 5nm And Below


The mechanisms that cause aging in semiconductors have been known for a long time, but the concept did not concern most people because the expected lifetime of parts was far longer than their intended deployment in the field. In a short period of time, all of that has changed. As device geometries have become smaller, the issue has become more significant. At 5nm, it becomes an essential par... » read more

Models Built With Water


A couple of years ago I wrote a post using the famous quote by statistician George Box: All Models Are Wrong; Some Are Useful. In that post, I discussed paper and plastic airplanes, but mostly I talked about modeling in computers, and especially what I call the "digital illusion." The digital illusion is the idea that signals in digital chips are ones and zeros, with timing, and not analog vol... » read more

New Approaches For Dealing With Thermal Problems


New thermal monitoring, simulation and analysis techniques are beginning to coalesce in chips developed at leading-edge nodes and in advanced packages in order to keep those devices running at optimal temperatures. This is particularly important in applications such as AI, automotive, data centers and 5G. Heat can kill a chip, but it also can cause more subtle effects such as premature aging... » read more

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