Real-Time Operating Systems for DSP, part 8 Design How-To 5/31/2007 Post a comment Part 8 of this 8-part series shows how to analyze systems with aperiodic tasks. It also explains the dangers of priority inversion, and explains how to avoid priority inversion by using priority inheritance.
Design tools spur fuel cell development year round Design How-To 5/31/2007 Post a comment Challenge X EXCLUSIVE: Developing a hydrogen fuel cell vehicle in three years is a daunting task. In a northern climate that only allows test driving on roads for eight months of the year, the task is nearly impossible--without the correct tools that is.
Achieving Certified IP Quality Efficiently Design How-To 5/29/2007 Post a comment The increasing use of design IP has reduced design effort per gate for the chip designer, but it has had an inverse effect on the chip-level integration and functional verification effort. This article explains how using complete formal functional verification enables IP providers to certify highest IP quality, and to do so cost-effectively and with a high productivity.
How to use DSP caches, part 2 Design How-To 5/28/2007 Post a comment Part 2 explains how to configure caches and how to use them correctly, all with a focus on maintaining cache coherence. It shows how DMA transfers affect cached memory, and how to manage DMA transfers with double buffering.
LED Driver targets automotive, general lighting applications Product News 5/24/2007 Post a comment Maxim Integrated Products introduced the MAX16831 high-voltage, high-power, constant-current LED driver with analog and PWM dimming. This LED driver integrates a floating LED current-sense amplifier and dimming MOSFET driver to minimize component count in automotive and general lighting applications which use high-brightness (HB) LEDs.
Tutorial: Polar modulation and its variants Design How-To 5/24/2007 Post a comment The announcement this week by Sequoia Communications of a single-chip HEDGE transceiver based on polar modulation calls out for an explanation of what polar modulation is all about and how it varies. Find out more in this special feature compilation.
How to use DSP caches, part 1 Design How-To 5/21/2007 Post a comment Part 1 of this two-part series introduces the fundamental concepts of cache memory, using the C64x DSP as an example. It explains why caches are needed, how caches communicate with main memory, and how to optimize cache performance.
Boost regulator offers high-current output, fault protection Product News 5/18/2007 Post a comment Intersil released the ISL97701; a boost regulator which provides a design for passive matrix OLEDs. With efficiency up to 87%, the ISL97701 can deliver 50 mA of output current at 18 V. It can provide up to 28 V output, enabling power-efficient operations in MP3, portable media players, automotive clustering and low-end cell phones PMOLED displays.
ADCs operate at temperature up to 125°C Product News 5/17/2007 Post a comment Linear Technology developed the LTC1403AH, a 14-bit, 2.8 Msamples/s SAR ADC which operates over the automotive -40°C to +125°C temperature range. The LTC1403AH is powered from a single 2.7 V to 3.6 V supply, draws 14 mW at 2.8 Msamples/s, and is available in a small, 10-lead MSOP package.
Under the Hood: PXI-5152 scope a design hotbed Teardown 5/14/2007 Post a comment
Precision oscilloscopes and laboratory instruments occupy a special place in the design flow for a new circuit or system. This is the instrument that verifies the performance of your prototype. It captures the signals your circuitry puts out and displays them on a calibrated screen. No matter how fast you think your high-speed circuit performs, the oscilloscope must run faster.
Special Issue: Airbag ASSPs: smart, sensitive Teardown 5/14/2007 Post a comment
Automotive airbag triggers incorporate a high degree of intelligence, as well as analog sensitivity and mixed-signal functionality. Today, smart airbags have occupant-detection features and inflate to variable volumes.
Tips and Tricks for Debugging Audio Design How-To 5/7/2007 Post a comment This article explains how to set up an audio test rig, and how to design test audio signals. It also shows how to use test equipment including oscilloscopes, audio editing software, and your own ears.
IBM fills 'airgap' to create faster chips News & Analysis 5/3/2007 Post a comment Scientists at IBM have devised a way to create vacuum spaces between copper wires in semiconductors, and claims the technique -- which borrows from nature -- will lead to chips that consume less power or run faster.
Blog Doing Math in FPGAs Tom Burke 20 comments For a recent project, I explored doing "real" (that is, non-integer) math on a Spartan 3 FPGA. FPGAs, by their nature, do integer math. That is, there's no floating-point ...