Donald Rumsfeld categorized what we knew into known unknowns and unknown unknowns. In a chip design, those unknown unknowns can bite you and leave you with a non-functional design, perhaps even intermittent failures which can be among the hardest problems to debug.
Chips are too big to do any sort of full gate-level simulation,… Read More
You can only design and optimize for low-power SoC designs if you can actually simulate the entire Chip, Package and System together. The engineers at ANSYS-Apachehave figured out how to do that and talked about their design for power methodology in a webinar today. I listened to Arvind Shanmugavel present a few dozen slides and… Read More
One of the challenges in doing a complex analog or mixed signal design is that things get out of step. One designer is tweaking the schematic and re-simulating, another is tweaking the layout of transistors, another is changing the routing. This is not because the design flow is messed up, but rather it reflects reality. If you wait… Read More
For several decades now consumers like me have enjoyed using mobile devices including:
IC designers have been creating with hierarchy for years to better manage large design sizes, however for the test world the concept of hierarchy and emerging standards is a bit newer. TSMC and Synopsys jointly created a webinarthat addresses hierarchical test, so I’ve attended it this week and summarized my findings here.… Read More
What do nVidia, Freescale and GlobalFoundries have in common? They are semiconductor companies? They are ARM licensees? They are doing 28nm chips? They all have the letter ‘a’ in their names?
All true, but that’s not what I was thinking of. But the letter ‘a’ is a clue since Apache (and Ansys) begin with ‘a’. All three companies have… Read More
Increasingly, SoC designs consist of assembling blocks of pre-designed IP. One special case is the derivative design where not just the IP blocks get re-used but a lot of the assembly itself. For example, in the design below some blocks are added, some blocks are updated, some hierarchy is changed. But the bulk of the design remains… Read More
There’s never a dull moment in the foundry race to offer FinFET processes that enable leading-edge SoC design. Today I attended a webinar hosted by Samsung and Synopsys on how to enable 14nm FinFET design. The two speakers were Dr. Kuang-Kuo Lin from Samsung and Dr. Henry Sheng from Synopsys.
Dr. Kuang-Kuo Lin, Samsung
Dr.… Read More
As we get down to smaller and smaller process nodes, the problem of soft errors becomes increasingly important. These soft errors are caused by neutrons from cosmic rays, alpha particles from materials used in manufacture and other sources. For chips that go into systems with high reliability this is not something that can be ignored.… Read More
Every process node these days has a new “gotcha” that designers need to be aware of. In some ways this has always been the case but the changes used to be gradual. But now each process node has something discontinuously different. At 20nm the big change is double patterning. At 14/16nm it is FinFET.
Rahul Deokar and John… Read More
