Interconnects Essential To Heterogeneous Integration

By Karen Heyman - 28 Mar, 2024 - Comments: 0

Designing and manufacturing interconnects is becoming more complex, and more critical to device reliability, as the chip industry shifts from monolithic planar dies to collections of chips and chiplets in a package. What was once as simple as laying down a copper trace has evolved into tens of thousands of microbumps, hybrid bonds, through-silicon vias (TSVs), and even junctions for optical ... » read more

Design Complexity In The Golden Age Of Semiconductors

By Frank Schirrmeister - 24 Aug, 2023 - Comments: 0

While writing last month's blog that used some of the trend charts we have seen, I noticed that a lot of the data ends in 2020 or earlier, but I was too close to the deadline to sit down and make orderly updates to some of the charts. Working day-to-day in the area of SoC integration and networks-on-chips (NoCs), the classic chart based on Karl Rupp's now 50 years of processor data that overlay... » read more

Moving From AMBA ACE to CHI For Coherency

By Min Lei - 09 Dec, 2021 - Comments: 1

Introduced back in 2011, ACE (AXI Coherency Extensions) grew from the existing AXI protocol to satisfy the cache coherency maintenance demands of SoCs with multi core processors and shared caches in smart phones, mobile computers, and servers. It added new channels for cache communication, extra signals to allow new transaction for coherency support, and five state model for caches. AXI + A... » read more

The Building Blocks Of Future Compute

By Ann Mutschler - 17 Oct, 2018 - Comments: 1

Eric Hennenhoefer, vice president of research at Arm, sat down with Semiconductor Engineering to talk about privacy, security, high-performance computing, accelerators, and Arm’s research. What follows are excerpts of that conversation. SE: Privacy, cybersecurity, silicon photonics, quantum computing are all hot topics today. What do you find really interesting with these emerging areas? ... » read more

Mixing Interface Protocols

By Ann Mutschler - 21 Dec, 2017 - Comments: 0

Continuous and pervasive connectivity requires devices to support multiple interface protocols, but that is creating problems at multiple levels because each protocol is based on a different set of assumptions. This is becoming significantly harder as systems become more heterogeneous and as more functions are crammed into those devices. There are more protocols that need to be supported to ... » read more

Introduction To AXI Protocol

By Aldec - 29 Sep, 2016 - Comments: 0

By Brandon Wade When part of a team, your group can become more capable than a single individual, but only if your team can work together and communicate effectively. Having members of a group talk over each other leads to nothing but a cacophony, and nothing gets done. For this reason protocols need to be established, such as letting others speak without interruption, or facing those you ar... » read more

How Cache Coherency Impacts Power, Performance

By Ann Mutschler - 27 Jul, 2016 - Comments: 0

As discussed in part one, one of the reasons cache coherency is becoming more important is the shared common memory resource in designs today. Various agents in the design want to access the data the fastest they can, putting pressure on the CPU complex to manage all of the requests. Until a generation ago, it was okay for the CPU to control that memory and have access to it, as well as be t... » read more

Rightsizing Challenges Grow

By Ed Sperling - 20 Apr, 2016 - Comments: 0

Rightsizing chip architectures is getting much more complicated. There are more options to choose from, more potential bottlenecks, and many more choices about what process to use at what process node and for which markets and price points. Rightsizing is a way of targeting chips to specific application needs, supplying sufficient performance while minimizing power and cost. It has been a to... » read more

Bridging The IP Divide

By Brian Bailey - 14 Apr, 2016 - Comments: 0

The adoption of an IP-based model has enabled designs to keep filling the available chip area while allowing design time to shrink. But there is a divide between IP providers and IP users. It is an implicit fuzzy contract about how the IP should be used, what capabilities it provides, and the extent of the verification that has been performed. IP vendors have been trying to formalize this as mu... » read more

Say Hi To Hybrid

By Doug Amos - 29 Oct, 2015 - Comments: 0

It has been proposed for some time that virtual platforms could be linked to emulation hardware in order to co-verify the software and hardware components of an SoC. However, that proposal now has evolved into hybrid emulation, a practical solution to allow pre-silicon verification and validation of today’s complex SoC designs. First-rate work by the standards body Accellera and the Open ... » read more

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Knowledge Centers
Entities, people and technologies explored

Shift Left Is The Tip Of The Iceberg

A transformative change is underway for semiconductor design and EDA. New languages, models, and abstractions will need to be created.

by Brian Bailey

Partitioning In The Chiplet Era

Understanding how chiplets interact under different workloads is critical to ensuring signal integrity and optimal performance in heterogeneous designs.

by Ann Mutschler

3.5D: The Great Compromise

Pros and cons of a middle-ground chiplet assembly that combines 2.5D and 3D-IC.

by Ed Sperling

AI’s Role In Chip Design Widens, Drawing In New Startups

Focus is on letting engineers do much more with the same or fewer resources — and less drudgery.

by Karen Heyman

Key Technologies To Extend EUV To 14 Angstroms

Alongside high-NA EUV will be better-performing photoresists, reduced roughness using passivation and etch, and lateral etching to reduce tip-to-tip dimensions.

by Laura Peters

What Comes After HBM For Chiplets

The standard for high-bandwidth memory limits design freedom at many levels, but that is required for interoperability. What freedoms can be taken from other functions to make chiplets possible?

by Brian Bailey

Memory Fundamentals For Engineers

eBook: Nearly everything you need to know about memory, including detailed explanations of the different types of memory; how and where these are used today; what's changing, which memories are successful and which ones might be in the future; and the limitations of each memory type.

by The SE Staff

Why Small Fab And Assembly Houses Are Thriving

Megafabs churning out the most advanced processors are not the only game in town.

by Bryon Moyer

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