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What if, in the case of a serially produced device, there is a need to equip it with a USB interface in a short time? How, without delving into the details of the USB protocol, without spending a lot of time studying drivers of various classes and trying to adapt them for their own tasks, to implement such an interface that is simple for the end user? In such cases, the most obvious way out is to use the USB hardware bridges discussed in this article.
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Interface IC
Evgeny Rakhno, Alexander Samonin Communication with the outside world using Microchip microcontrollers
As comprehensive as microcontrollers are, virtually any embedded system includes several peripheral modules such as EEPROM, memory, or ADC. Naturally, the microcontroller must be able to communicate with these devices. In this article, we will take a quick look at the most popular data buses, namely I2C, SPI, USB, CAN, and LIN.
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Interface IC
Pavel Vovk New Luminary Micro 32-bit Microcontroller Families with USB Host Support
The USB interface has long and firmly entered our life and has become the de facto standard for exchanging large amounts of data not only in household appliances and computer equipment, but also in embedded systems, where previously reliable, but relatively slow and already archaic RS-232 reigned supreme. and SPI. Moreover, the ever-increasing requirements for data transfer speed and interface universality force developers to pay attention to other interfaces.
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Interface IC
Andrey Kayukov There must be a connection with the object!
Alternative methods of connecting to servers and other infrastructure devices give administrators remote access to diagnose and restore the health of distributed IT resources.
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Interface IC
Oleg Valpa Single-chip SPI-I2C bridge and I/O expander
The microcircuit of the SPI to I2C interface converter is described, with the expander of the I/O ports. Its technical characteristics, architecture and control method are given.
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Interface IC
Tatiana Mamaeva IDT: ICs for Digital Multimedia Applications
IDT manufactures a wide range of microcircuits - about 1300 items and about 15000 configurations. Products include network search processors (NSEs), embedded communications processors, flow control devices, T1/E1/J1 line interface chips, codecs, digital switches, memory chips for data networks (FIFO memory, multiport RAM) , serial switching devices, traffic control devices, physical layer devices, PCI Express interface chips, controllable clock distributors, logic chips, high-speed SRAMs.
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Microprocessors
Alexey Drozhzhin Centrino Duo in detail and color
The Centrino Duo platform, which was released in early 2006, quickly conquered the market. Moreover, the technologies tested in its structure have now found application in all segments of the x86-computer market. The platform is very diverse, which is why it requires detailed consideration. This is what we will do today.
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Microcontrollers
Andrey Ryazanov New Perspectives for 8-Bit Solutions: Atmel's XMega AVR Microcontroller
A new powerful 8-bit AVR microcontroller from Atmel, announced at the end of February 2008, is considered, the functionality of which opens new horizons for the use of 8-bit solutions.
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Memory
Mikhail Sokolov, Alexander Grishin, Igor Ocheretyanko A new round of memory evolution: RAM+ROM = MRAM
Today, there are many storage technologies. The most active development is the direction of flash memory - new models with improved characteristics appear regularly. But, this technology directly approached the limit through which the usual flash can no longer step over. Therefore, in recent years, active searches have begun for a solution capable of taking the palm from the flash in the future.
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Optoelectronics
Artem Kozlov Ways to provide power to LEDs
To work with LEDs, it is recommended to use a current driver - a device that provides a stable current. This article is devoted to the disclosure of the practical aspects of constructing devices based on LEDs.
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Semiconductors
Vitaly Shevchenko Compact Schottky diodes developed by International Rectifier
Today we see the rapid development of electronics and component technology. More and more compact devices appear in household appliances, telecommunication devices, etc. When reducing the size of a product, the first issue is to reduce the size of the electronic components used in it. The article deals with a new type of housing for the Schottky diode and a description of its functionality.
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FPGA and BMK
Valery Zotov Practical course of end-to-end design of digital devices based on FPGAs from Xilinx. Part 11
In the eleventh part of the course, the process of performing the synthesis stage of the device under development is considered. The description of the structure of the report on the implementation of the synthesis stage is given.
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Embedded systems
On the use of computers/controllers Kontron ThinkIO for solving practical problems of industrial automation
The products of the international holding Kontron are in steady demand among developers and integrators of industrial computer systems. This popularity is well deserved: to this category of customers, the Kontron holding addresses a number of its product lines, focused on solving automation problems of all types and levels.
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Measuring technology
Vladimir Kozlyakov OX7XXX Series Portable Oscilloscopes-Analyzers by Chauvin Arnoux
This article examines the position on the market of measuring instruments by Chauvin Arnoux (France) - one of the world leaders in the development and production of measuring and control and diagnostic equipment for various industries, energy and communications, as well as the features of a number of oscilloscopes of its production.
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To help the developer
Alexey Grabov Development strategy for the technology of sintered bodies for the components of highly reliable electronic equipment
An important problem of modern domestic electronics is the need to provide new designs of VLSI and MCM (multichip modules) for highly reliable electronic equipment with metal-ceramic cases due to increased requirements for resistance to external factors, heat dissipation and mechanical strength. In this regard, the following questions arise:
• to what extent the technical requirements put forward for the enclosures correspond to the development trends of highly reliable electronic equipment, and is it possible to adjust them;
• is the domestic technology capable of creating products that meet at least the minimum technical requirements;
• what funds are necessary and possible to attract for their implementation?
High-resolution sigma-delta analog-to-digital converters (ADCs) offer significant advantages over other types of multi-bit ADCs. In particular, modern technologies make it possible to manufacture such an ADC in the form of a single-chip integrated microcircuit (IC) with a minimum of external elements and a power consumption of several milliwatts. Texas Instruments is one of the world's leading manufacturers of integrated circuits for sigma-delta ADCs [1], the nomenclature of which includes more than 50 items, combining very high characteristics at a relatively low cost.
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Digital signal processing
Irina Filkova, Evgeny Spinko Low power miniature video encoder based on ADV202 chip
The main characteristics, structure, principles of operation and software of a new video compressor (encoder), created for use in mobile and portable video surveillance systems, are presented. The encoder is developed on the basis of the ADV202 chip, uses the JPEG2000 compression algorithm and the Linux 2.6 operating system. Its distinctive features are small size and low power consumption. The encoder is designed for receiving, digitizing, processing and compressing multimedia information and its further transmission via wired and wireless communication lines.
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Digital signal processing
Jeff Falin TPS6108x: High-performance switching converters
Highly integrated microcircuits TPS61080 and TPS61081 are switching converters that generate a regulated output voltage of up to 27 V at a low input voltage of up to 2.5 V. These two converters differ only in the maximum allowable current of the built-in switch (0.5 and 1.3 A, respectively). The TPS6108x series converters are designed to operate in a traditional current controlled circuit with constant pulse width modulation (PWM), resulting in low noise. The switching frequency can be set to either 600 kHz for efficient operation with low power loads, or 1.2 MHz if necessary to keep external components as small as possible. With built-in feedback compensation, an internal high-power switch and high PWM frequency, these ICs allow you to build very small (3 × 3 mm) converters in a QFN package for a wide range of applications. For example, they can easily implement a 12 or 24 V fieldbus when powered from a 3.3 or 5 V power supply. Additional benefits include high efficiency, adjustable reference voltage, and multiple protection circuits. This makes the TPS6108x ideal for powering equipment from the 3.6V Li-Ion battery used in most portable devices. The converters also provide the higher voltages required to power TFT LCDs, OLEDs, WLED LED backlights and camera flash lamps.
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Digital signal processing
Patrick Weber, Craig Windish Full featured industrial ADC based on microcontroller and sigma delta modulator
Industrial control system designers typically need recorders with isolated 0-20mA and 0-10V voltages. Combining a sigma-delta modulator with isolated signal and power inputs from an Analog Devices AD7400 ADC (www.analog.com) and the MSP430 microcontroller from Texas Instruments (www.ti.com) allows you to create reliable analog signal recorders that meet industrial input isolation requirements.
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Exhibitions
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