category: Blogs – LPHP

category: Auto, Security & Edge AI

Waste Not, Want Not
By William Ruby - 05 Dec, 2012 - Comments: 0

Power is the new timing …. performance per watt … low-power design ... power performance trade-offs … the list of terms goes on and on, but there is no denying that power has now become the primary design objective. So what does it really take to manage power in a modern system-on-a-chip (SoC) design? Power is an “equal opportunity problem,” and all can contribute to the solution. ... » read more

Signal Integrity’s Growing Complexity
By Matt Elmore - 08 Nov, 2012 - Comments: 0

By Matt Elmore In Part 1, we reviewed the importance of simultaneous switching output (SSO) timing and the challenges associated with double data rate (DDR) simulation complexity. DDR memory interfacing has reached incredible levels of performance (17 Gb/s), requiring precise quantification and reduction of noise. In order to account for each noise contributor, we must model systems end-to-... » read more

CPF 2.0 Voltage Regulator And Analog Ports
By Luke Lang - 08 Nov, 2012 - Comments: 0

By Luke Lang CPF 2.0 was released more than a year and half ago, yet the majority of the designs are still done with CPF 1.1. This is one of those good news/bad news situations. The good news is that CPF 1.1 is perfectly adequate for majority of the LP designs. The bad news is that designers may not be aware of the new CPF 2.0 features that could be quite useful. This month, we will take a loo... » read more

ARM’s big.LITTLE Concept
By Barry Pangrle - 08 Nov, 2012 - Comments: 0

By Barry Pangrle ARM EVP Simon Segars gave the opening keynote address at last week’s ARM TechCon in Santa Clara, California. The big announcement was the new ARM Cortex-A53 and Cortex-A57 processors that will operate in ARM’s “big.LITTLE” configuration. I wrote a bit about big.LITTLE in my blog last year on Innovation at the Core. ARM’s big.LITTLE concept is based on using a smal... » read more

iPad Mini: The iPad On A diet
By Synopsys - 08 Nov, 2012 - Comments: 0

By Cary Chin The iPad mini was unveiled last month, but just hit the stores on Nov. 2. Early reviews have been quite positive—good performance, quality build, excellent battery life. There’s just one problem (besides the price)—the non-retina display. Even with a 1024 x 768 display (the same resolution as the original iPad and iPad 2), it seems we’ve gone “retina display” mad, and ... » read more

Cellular Stranglehold?
By Ann Mutschler - 08 Nov, 2012 - Comments: 0

Do you ever feel like you are completely at the mercy of your cellular service provider? Yeah, me too. Not only did I have to change providers when I relocated, I had to buy a new phone of course. Since my old phone and my new phone were both iPhones, I thought for sure I could use the same car charger….but no dice. This fact has bothered me for quite some time because it made no sense to ... » read more

Design For Reliability
By Arvind Vel - 11 Oct, 2012 - Comments: 0

By Arvind Shanmugavel Faster processors, lowered power targets and shrinking technology have increased the complexity of integrated circuit (IC) reliability analysis. With the 20nm node becoming mainstream, IC design teams are fast re-tooling their analysis methodologies to simulate and capture various reliability failure mechanisms. Electromigration (EM) analysis, thermal analysis and Electro... » read more

The Trouble With Clock Trees
By Arvind Narayanan - 11 Oct, 2012 - Comments: 0

By Arvind Narayanan Among the perennial challenges of advanced-node IC design is power reduction. Clock trees are now the single largest source of dynamic power consumption, which makes clock tree synthesis (CTS) and optimization an important task for achieving overall power savings. Building a well-balanced clock tree and effectively managing clock skew has been a challenge since the first... » read more

LP Test
By Luke Lang - 11 Oct, 2012 - Comments: 0

By Luke Lang Last month, we discussed testing a portion of a chip at a time to reduce overall power dissipation during test. However, this does not address local power dissipation hotspots that can cause excessive IR drop. These hotspots can occur in regions where many nets are switching at the same time. Typically, a chip’s power grid is designed to meet IR drop specification in the func... » read more

Return To Claremont
By Barry Pangrle - 11 Oct, 2012 - Comments: 0

By Barry Pangrle Intel’s Gregory Ruhl gave an update presentation on Intel’s Claremont IA-32 near-threshold voltage (NTV) and wide dynamic range processor at Hot Chips 24. (I’ve also written an earlier article about Claremont here.) There are many challenges in building a part that operates across a broad range of voltages and Intel listed reduced ratios of on-current vs. off-current, re... » read more

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