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16 April 2008

News & Analysis | Technical Features | Opinion | Interview
News & Analysis
Virtualization: The Swiss Army knife of networking?
Startup Neterion Inc. has rolled out a chip that lets systems split one 10GbE link into as many as 16 virtual connections.

IBM mainframes get CPU, OS makeover
IBM Corp. is exploring hybrid computing concepts and expanding open-source software support for its mainframes as two ways to kick new life into the venerable systems.

MRAM is fit for space mission
Headed for orbit with the launch of Japan Aerospace Exploration Agency's SpriteSat is MRAM technology, taking the place of both SRAM and flash memory.

Class G amps key in driving ceramic speakers
Today's portable devices drive a need for smaller, thinner and more power-efficient electronic components. Cellphone form factors have become thin that the traditional dynamic speaker has become the limiting factor in how thin manufacturers can make their handsets. Ceramic or piezoelectric speakers are quickly becoming a viable alternative to dynamic speakers.

Learning from the superhet
Trying to transform an unmanageable problem into one that can be managed, and then solving it, rather than approaching it directly, is a good approach to keep in mind for the system design challenges all engineers face.


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Scale voltage to manage power consumption
As CMOS process technologies migrate from 90nm to 65nm and below and as chip densities increase, static and dynamic power consumption often rise above acceptable levels. Apply voltage-scaling techniques to manage both.

Manage circuit board power with PLDs
This article proposes a design solution to the complex power management problem in circuit board design: the use of a programmable, mixed-signal power management device.

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Technical Features
Tips on implementing negative buck topology
This article analyzes the architecture and detailed operation of the negative buck topology. It will also discuss actual circuit implementations for the topology, from a system perspective down to the building of the needed circuit blocks, and include examples on how to build a voltage translator circuit, a key block in implementing a negative buck regulator using readily available boost ICs. (PDF file)

Guarantee quality in voice engine design
The general purpose SoCs used by today's cordless or IP telephones, integrated access devices and wireless unified communications devices, fully support the software DSP required for VoIP by integrating a software voice engine within the system software. This article discusses how to implement this in order to exceed telephony quality communication. (PDF file)

Manage Li-ion batteries for portable devices
Portable product designers can design a flexible Li-ion battery charge management system using an MCU-controlled pulse-width modulation module or a stand-alone integrated battery charge-management controller-based solution. (PDF file)

Understand 3G LTE testing challenges
With over 2.5 billion users and growing, the GSM/3GSM radio access technology dominates today's global cellular landscape. To keep pace with this growth and the demand for faster, more bandwidth-intensive services, it is essential that the technological infrastructure continue to evolve while remaining efficient, competitive and successful. (PDF file)

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Opinion
The coming of age of India's embedded industry
The electronics industry in India is undergoing a gradual—but inexorable—transition from a software-driven outsourcing model to one increasingly focused on the growth and development of the domestic market.

Overcome the billion-cycle challenge
According to Alain Raynaud of EVE, "Until designers realize that they can't manage billions of cycles like any other simulation, they hit a wall that I call the Billion-Cycle Challenge."


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Talkback

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Demystifying Vietnam
What does Vietnam offer that a rising number of top-tier semiconductor companies are setting up and expanding operations there?

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