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Author's Latest Posts


When Things Go Wrong Even When You’re Doing the Right Thing


By Kurt Takara and Joe Hupcey III “Isolation. Retention. Level shifters. Dynamic voltage scaling. I’m doing all the right things to reduce the power consumption of my design by adding all of this power control logic. But because of this new low power circuitry, I’m seeing fresh clock domain crossing (CDC) problems that are making my design do all the wrong things; and my trusty old low... » read more

User Case Study


Whenever more than one clock is employed in an SoC (which is all SoCs), the risk of errors from clock domain crossings (CDC) – signals (or groups of signals) that are generated in one clock domain and consumed in another – is incredibly high. Unfortunately, CDC bugs are nearly impossible to catch with conventional simulations. Thus, all too often they escape into silicon. Debugging them in ... » read more

User Case Study: Using Formal To Verify Low Power Functionality And Eliminate Unwanted ‘Xs’


The cynics among us might argue that the addition of low power circuitry is a clever scheme by the energy industry to cause an equal amount of power to be consumed by low power verification as is saved by end-user usage.  As if modern SoC verification wasn’t challenging enough, the addition of low power can create corner cases that can escape even the most well-written UVM testbenches.  Ind... » read more

Formally Verifying Security Aspects Of SoC Designs


[youtube vid=e4SdOY3HUtU] » read more

The Other Side Of Formal


It’s natural to think of formal analysis as a ruthlessly effective bug hunter and verification tool. But as the following case study from Homayoon Akhiani, presented at the Jasper Users Group (JUG) meeting shows, customers are using this approach to increase their SoC’s performance in ways that are very visible to the end-user of the part. Such visible improvements — in this case, minimiz... » read more

User Case Study


In prior articles I’ve written in general terms of about formally verifying the impact of adding low power control circuitry with Jasper’s Low Power Verification App. At the recent Jasper User’s Group meeting on Oct. 22, a real world case study of this app in action at STMicro’s R&D center in India was presented. Here are some highlights from this paper: DUT in question: an AR... » read more

How Secure Is Your Design?


Once upon a time, secure hardware was only needed for mil-aero and banking systems. Today, numerous industrial and consumer applications require special hardware to protect data required for digital rights management, electronic wallets, private encryption keys, or medical information. Current methodologies to verify that such hardware is impervious to attack and/or the data within remains s... » read more

Equivalence Checking


Everyone is consumed by power these days. The less power our devices use, the better—the longer our batteries will last, the more applications we can use simultaneously, the less HVAC capacity is required by the data center, etc. Clock-gating is one widely used technique to save power in ASIC designs. However, clock gating can significantly impact the structural and behavioral elements of the... » read more

Delicate Balance


By Joe Hupcey III It’s not surprising that power optimization is a critical part of today’s complex designs. Unbeknownst to most consumers is an underlying methodology that every design engineer must follow to make sure a consumer device meets the power requirements of the consumer—even if the consumer doesn’t realize they’re demanding it. The situation in industrial products, suc... » read more