336 results found for Design View / Design Solution, displaying items 1 - 20
June 25, 2009 Take The Guesswork Out Of Debugging
In the classic board game Battleship, an adversary arranges a fleet of tiny, plastic combat vessels on a grid that’s hidden from view. After an analogous fleet is set up on a separate grid, the objective is to guess the locations of the opponent’s boats. Likewise, the opponent’s goal is to divine the whereabouts of your miniature ships. The game proceeds with ...
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Matthew Gordon
June 16, 2009
Use An Open Test Platform In A Standardized Core To Develop And Manage A Functional Test System
An OTP system leverages a standard core built with the components that provide the basic functionality required by any test system, and then adds the components unique to the specific test system being designed. LXI-compliant (LAN Extensions for Instrumentation) components are particularly well suited for this type of application because they’re easy to build and operate in hybrid systems.
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Elizabeth Persico
June 11, 2009 Reduce The Small-Memory-Footprint Requirements In Wireless Sensor Networks
Products based on wireless technology have been steadily insinuating their way into our lives since the 1980s. Wireless devices such as Apple’s iPhone and Amazon’s Kindle have become common items in many of today’s households. Similarly, within the industrial market segment, the use of small wireless sensor devices is becoming more widespread within office buildings and on factory floors. Equipment manufacturers are incorporating and connecting...
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Derrick Lattibeaudiere
June 11, 2009 Measuring Mains Current Doesn't Have To Be Difficult
Monitoring the current taken by a mains-powered appliance can be a challenge, particularly if the application demands an inexpensive solution that must provide galvanic isolation for user safety. Common solutions employ either a current-sense resistor or current-sense transformer to convert the line current to an ac voltage that’s then converted into a proportional dc voltage. The dc voltage may then be processed using various techniques to provide a...
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Anthony H. Smith
May 21, 2009 Apply Virtualization To Storage I/O
Virtualization is receiving lots of attention these days. Behind the buzz are some simple, time-tested concepts. But the movement of this technology from the mainframe to the mainstream has brought it into the limelight. At its heart, virtualization is about making something “look” like something else. Typically, this means making an operating system “think” it’s running alone on a computer, when in fact that computer is shared by several...
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Richard Solomon
May 19, 2009
PCI Express And The PHY(sical) Journey To Gen 3
This article will focus on some of the key physical-layer features and serial/deserializer (SERDES) decisions that make PCIe the success it’s become, then address the critical “curves ahead” designers will face with Gen 3. In addition, it details the pros and cons of some of the critical physical-layer tradeoffs necessary for designers journeying into the world of PCIe Gen 3.
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Reginald Conley
May 12, 2009
Simple Equalization Ensures Signal Integrity For USB 3.0 Systems
USB 3.0 is the next-generation version of the USB standard. One concern with this emerging standard is the integrity of signals passing through (for example) a printed-circuit board (PCB), a long cable, and the associated connectors. To guarantee acceptable performance, you must include either fixed or adaptive equalization in the system. Adaptive equalizer circuits are complex and require a long training sequence. Fixed equalization is simpler, easier to design, and less power hungry.
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Haim Shafir
May 5, 2009
Design Abstraction—A Practical View
The concept of applying a higher level of design abstraction to creative and engineering processes is so closely familiar that we probably take it for granted. From NC machines to SQL database systems, a high-level approach to capturing the design or operational intent of a system is universally accepted as the way it’s done.
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Rob Evans
May 7, 2009 Overcome Barriers To Broad-Based SSD Adoption In The Enterprise
At first glance, solid-state drives (SSDs) appear to be a no-brainer for makers of storage systems for enterprise servers and laptops. After all, SSDs promise higher read/write performance, higher reliability, and lower power consumption compared to hard-disk drives (HDDs). But in practice, SSD adoption has been held back not only by a higher cost per gigabyte, but also by real-world issues that prevent them from achieving their performance and reliability...
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Alex Naqvi
May 7, 2009 Design A Linear Li-ion Battery Charger For Portable Systems
Energy-storage devices such as batteries continue to change how people live. Every year sees greater daily usage of battery- powered personal electronic devices. Moreover, demands for longer run times and smaller sizes are driving continuous growth in both the battery and semiconductor industries. When the time to develop next-generation batteries takes longer than Moore’s Law, the need arises for highly integrated, feature-rich ICs that deliver...
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Brian Chu
April 28, 2009
TLM-2.0 APIs Open SystemC To Mainstream Virtual Platform Adoption
At the 45th Design Automation Conference in June 2008, the Open SystemC Initiative (OSCI) announced the ratification of the TLM-2.0 standard, enabling interoperability for transaction-level models (TLMs). The next steps after ratification were to formalize a TLM-2.0 language reference manual (LRM) and eventually contribute the LRM to IEEE for further standardization once complete.
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Frank Schirrmeister
April 23, 2009 Using High-Speed Latched Comparators For Simultaneous Instant Frequency Measurement
Measuring key characteristics of high-speed pulses such as frequency, amplitude, and pulse width for simultaneous pulses that overlap in time has long been an issue in design. To solve that problem, engineers developed and refined the monobit receiver. The system includes RF signal shaping and filtering functions, a latched comparator (which is a single-bit analog-to-digital converter, or ADC), a demultiplexer to interface the high-speed digital...
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Mike Groden
, et al.
April 23, 2009 Bandpass Sampling
If a signal is sampled, the spectrum is replicated at every harmonic of the sampling frequency (see the figure). For example, if the spectrum is sampled at 9.2 GHz, the spectrum will repeat at 9.2-GHz intervals, out to plus and minus infinity. As a consequence, the frequency at 4 GHz is indistinguishable from the signal at +13.2 GHz, +22.4 GHz, etc. The opposite is also true—signals at +13.2 GHz and +22.4 GHz, sampled at 9.2...
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Mike Groden
, et al.
April 9, 2009 Programming The CUDA Architecture: A Look At GPU Computing
Graphics processing units (GPUs) were originally designed to perform the highly parallel computations required for graphics rendering. But over the last couple of years, they’ve proven to be powerful computing workhorses across more than just graphics applications. Designed with more resources devoted to data processing rather than flow control and data caching, GPUs can be leveraged to significantly accelerate portions of codes traditionally run on CPUs,...
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Brent Oster
March 24, 2009
Fiber Bragg Gratings: The Dispersion Compensation Technology For 40G And 100G Optical Transport
The pursuit of faster and more cost-effective optical transport networks is a never-ending quest for both optical-system vendors and network operators in the telecommunications industry. In much the same manner as the transition from 2.5G (gigabits) to 10G in the late 1990s, the industry is now experiencing similar challenges with the next capacity-quadrupling technology step from 10G to 40G.
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Fredrik Sjostrom
March 26, 2009 Improve Integrated SRAM Reliability With Hamming Error-Correction Code
Many error-correcting codes (ECCs) are proposed in the industry’s literature for correcting bit errors present in the received data. We will discuss Hamming codes that are used to correct singlebit errors and detect all double-bit errors that could occur during data transmission or residing in the memory. How much improvement we can get in the bit-errorrate (BER) performance curves using onebit error correction depends on the raw BER (RBER) without error...
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Hazarathaiah Malepati
, et al.
March 12, 2009 Digital PWM Controllers Augment System Reliability
Multiple methods are available to monitor the health of a power supply, ultimately leading to improved reliability of the power subsystem and, subsequently, the total system. These improvements can come from adjusting system operating parameters based on these real-time diagnostics or by alerting the host system that the power subsystem performance is degraded, allowing the system to adjust or schedule maintenance. Because discrete values of the...
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Mark Hagen
, et al.
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