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Posts Tagged ‘glitching’

7 Design Faults Leading to Clock and Data Glitches

Thursday, April 28th, 2016

Recently I came upon an article by Ankush Sethi of Freescale on the importance of avoiding bad design practices that lead to glitches in clocks which result in asynchronous behavior. He points out:

It is very important to make digital designs free of any clock or data glitches to ensure correct functioning. There are many cases where such issues have caused functional failure, or increased design time through incurring extra debug effort. Hence, it is very important for a designer to take care of such issues at the earliest stages of design once flagged by a tool or gate-level synthesis.

Here is his introduction followed by an iframe of the article from EDN magazine.

With the increasing complexity of SoCs, multiple and independent clocks are essential in the design. The design specifications require system level muxing of some of these clocks before they are sent to actual IP. Also, to save power, clock gating cells are inserted in clock paths. While implementing these muxing and gating cells, a designer tends to make mistakes that can lead to glitches. A glitch on a clock signal exposes a chip (or a section of a chip) to asynchronous behavior. A glitch-prone clock signal driving a flip-flop, memory, or latch may result in incorrect, unstable data. This paper discusses structural faults that can lead to glitches in clocks. Also, some bad design practices that lead to glitches in data are discussed. (more…)

Verification Coffee Break – Where are We Going?

Thursday, April 14th, 2016

Pranav Ashar, CTO at Real Intent was interviewed in April by SemIsrael, Israel’s leading semiconductor design and development portal, on the latest trends in the world of verification. Below, I have embedded video clips that cover each of the five questions he addressed. You can watch the entire video here.

Q1. What is the current trend driving verification?

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Video: “Why A New Gate-level CDC Verification Solution?”

Thursday, November 19th, 2015

Recently, I interviewed Vikas Sachdeva, Sr. Technical Marketing Manager at Real Intent where we discusse why gate-level CDC verification is necessary, what are some of the failure modes that can occur, and why Meridian Physical CDC is the right tool to do gate-level sign-off. You can see the video below.  You can also find more information about Meridian Physical CDC here.

Click here to watch other Real Intent videos on our YouTube Channel.

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