December 3, 2001 Magazine Archive

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ISSUE DATE: DECEMBER 3, 2001

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Efficient digital controller, Multiple DSP cores on-chip, Interrogation with the MDIO bus

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December 3, 2001 - In This Issue

Novel Architectures Pack Multiple DSP Cores On-Chip (Part 2)
Part 1 of this article, which also appears in the print version of the magazine, discusses the technology behind placing multiple cores on a single chip. Part 2 examines applications of this technology. Motorola has also tapped the... — Ashok Bindra

[Technology Report]
Novel Architectures Pack Multiple DSP Cores On-Chip (Part 1)
Traditional programmable DSPs are running out of juice when it comes to tackling forthcoming 3G voice-over-intellectual-property (VoIP) and other high-density voice-processing systems. With a voracious appetite for billions of operations per second,... — Ashok Bindra

[Design Application]
Use The MDIO Bus To Interrogate Complex Devices
Semiconductor devices can modify their behaviors based on the parameters written to the internal registers, or the control-voltage levels provided to the input pins. Pin count is sometimes a limiting factor, though, and many designers prefer to... — Contributing Author

[Ideas For Design]
Simple LED Flasher Yields 99% Power Reduction
An LED is commonly used as a "power on" indicator for many electronic devices. For the LED to produce discernible visible light in daylight, the forward-bias current needs to be in the moderate range (10 to 20 mA). This amount of current may be too... — Clayton B. Grantham

[Ideas For Design]
Universal Impedance Generator Handles Biomedical Applications
Components like inductors and capacitors constitute an integral part of filters and oscillators used for communication and biomedical applications. A common problem intrinsic to passive inductors is their enormous size as their value increases.... — Saurav Gupta

[Ideas For Design]
Single-Gate VHF Temperature Transmitter Runs On 3.6 V
This design idea illustrates what may be the simplest and smallest temperature transmitter in the VHF 50- to 100-MHz range. As seen in the figure, the design employs an ON SEMI single-gate IC (NL27WZ14). The... — Shyam Sunder Tiwari

[Editorial]
Trade Secrets Under Attack: DVDs Now, Is IP Next?
California's 6th District Court of Appeals recently overruled trade-secret laws, giving free-speech advocates a major victory. Of course, the court's decision will be appealed. In the meantime, information can be posted on Web sites and newsgroups... — Dave Bursky

[Pease Porridge]
What's All This Knot Stuff, Anyhow? (Part II)
Today I'm writing about some knots that I will use this weekend to tie my tent and my sleeping bag onto the bottom of my packframe. If I need to put too much stuff inside my pack, I'll use the same knot to tie the stuff on top of my pack. By the time... — Bob Pease

[Editor's Notebook]
Is True EDA Tool Interoperability Finally On The Horizon?
True interoperability between EDA tools has long been a dream for users, but the EDA industry's past efforts in this regard have failed. As a result, design teams can spend as much time coaxing tools to work together as they do using them, blowing... — David Maliniak

[Embedded in Electronic Design]
Java Matters
I love programming languages. They're fun. I've worked everything from Algol, APL, Lisp, and Visual Basic to Forth. C got a lot of use, but it lacked production-grade, object-oriented features. After playing with Smalltalk, I was hooked on OOPs... — William Wong

[Embedded in Electronic Design]
Java 2
Building structured applications—Java is not just a programming language. It's a collection of technologies built around a programming language called Java. Programmers of Java build applications within this structure... — William Wong

[Embedded in Electronic Design]
Java Processors
Jazelle Espresso ... — William Wong

[Letters]
Letters
Engineering For Security Excellent editorial! ["Let's Engineer Terrorism Out Of The Skies," Oct. 15, p. 24] I have wondered for years why airplanes are allowed to fly into mountains when it would be fairly... — Various

[40 Years Ago]
Extending High-Frequency Response
High-frequency transistor limits can be extended and circuit gain increased through a new technique that neutralizes the detrimental effect of emitter inductance. This parameter has a serious effect on the high-frequency performance of transistor... — Steve Scrupski

[40 Years Ago]
Infrared Camera Spots Malfunctions
By photographing a circuit board with an infrared scanning camera, engineers can, within 10 to 60 sec, detect overheated components. This infrared technique is presently being used by engineers at International Business Machines Corp. to measure... — Steve Scrupski

[40 Years Ago]
Power Supply Controller Keeps Efficiency High Across All Loads
Traditional analog and pulse-width-modulated (PWM) power-conversion controllers have adequately served the needs of power-supply designers for decades. Lately, though, they seem to be approaching a "brick" wall. To gain just a 1% improvement in... — Ashok Bindra

[Forefront]
Sourcing For Aluminum Ploymer Capacitors Grows
With the introduction of its AO-CAP (A700 series), component manufacturer Kemet Electronics of Greenville, S.C., becomes another source for surface-mount aluminum polymer capacitors. Kemet joins Panasonic in producing these low-ESR, high-frequency... — David G. Morrison

[Forefront]
Novel Platform Takes SoCs On A New Route
To strengthen its position in emerging personal imaging and printing appliances, Oak Technology of Sunnyvale, Calif., has crafted a novel programmable system-on-a-chip (SoC) architecture. Known as Quatro, it combines Oak's optimized DSP... — Ashok Bindra

[Forefront]
Xilinx And Synopsys Collaborate On Tool Flow For Platform FPGAs
Time-saving verification tools have been added to an advanced tool flow for high-end FPGA design. The flow, a collaboration between Xilinx Inc. of San Jose and Synopsys Inc. of Mountain View, Calif., now includes Synopsys LEDA register-transfer-level... — David Maliniak

[Forefront]
Dynamic Binary Translation Delivers Program Portability
Program portability is coming to an embedded processor near you, courtesy of Transitive Technologies' dynamic binary translation software, Dynamite. This San Diego company has demonstrated Dynamite x86 application code on a MIPS processor. The... — William Wong

[Forefront]
Verilog Simulator Adds Full-Featured Coverage Analysis And A C/C++ Interface
The latest VCS Verilog simulator from Synopsys contains built-in comprehensive coverage analysis. With it, design teams using VCS 6.0.1 can determine their verification quality before tapeout. Synopsys also has added VCS DirectC. This new interface... — David Maliniak

[Forefront]
Tiny Solid-State Disk Serves Portable Systems
Portable embedded systems like mobile handsets demand compact, low-power, robust storage. M-Systems' Mobile DiskOnChip delivers high-performance NAND-based flash memory that interfaces like a memory-mapped disk drive for these types of systems. It... — William Wong

[New Products]

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