Electronic Design UPDATE: July 30, 2003

July 30, 2003
Editor's View -- Power-Over-Ethernet Standard Could Serve Up Unexpected Uses For LANs by David G. Morrison, Analog/Power Editor. Can you imagine picking up your electric razor and plugging it into a local-area network (LAN) jack?...

Electronic Design UPDATE e-Newsletter Electronic Design Magazine PlanetEE ==> http://www.planetee.com July 30, 2003


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Be sure to participate in our current QUICK POLL: David Maliniak, our EDA Editor, asks: Which high-level design language do you think will gain broad industry acceptance first? Go to http://lists.planetee.com/cgi-bin3/DM/y/eRyK0DJhUf0EmQ05Am0AO Today's Table of Contents: 1. Editor's View Power-Over-Ethernet Standard Could Serve Up Unexpected Uses For LANs 2. News From The Editors * Speedy ARM-Based CPU Targets Mobile Systems * Fingerprint Sensor Integrates Easily Into Handhelds * Two-Wire Temperature Transmitter Has HART * ARM9 Energizes Low-Power MCU 3. Upcoming Industry Events In August * iWirelessWorld/Wireless Developer Conference * Linuxworld Conference and Expo * Wescon * Symposium on High Performance Chips (a.k.a. Hot Chips) * International Symposium on Low Power Electronics and Design (ISLPED) 4. Magazine Highlights: July 7, 2003 issue * Cover Story: Technology Report -- Flat-Panel Displays: Poised To Take Over Large And Small Screens * Leapfrog: First Look -- New Mini-Card Form Factor Embeds PCI Express * Leapfrog: First Look -- High-Performance 10-Gbit Ethernet Switch Knocks Price Down * Design View: Take Advantage Of All That USB On-The-Go Has To Offer Edited by John Novellino ********************** 1. Editor's View -- Exclusive to Electronic Design UPDATE ********************** Power-Over-Ethernet Standard Could Serve Up Unexpected Uses For LANs By David G. Morrison, Analog/Power Editor Can you imagine picking up your electric razor and plugging it into a local-area network (LAN) jack? How about using the LAN to charge your cell phone or PDA? Well, you might be able to do some of these things in the not too distant future, when the role of the Ethernet network will expand beyond data communications to include transmission of 48-V dc power to network peripherals. This transition has already begun, as the industry continues to develop and deploy Power Over Ethernet (PoE) technology. The momentum behind PoE has been growing in the past few months as evidenced by some recent component developments. PoE (also known as Power Over LAN) also picked up steam in June with the ratification of the IEEE 802.3af-2003 Power Over Ethernet standard. The recent approval of the standard doesn't bring any surprises in terms of its technical requirements, but it is expected to hasten the adoption of PoE in the marketplace. Recently, I spoke with Amir Lehr, vice president of business development and strategic planning at PowerDsine, a founding member of the 802.3af task force and one of the first companies to champion PoE technology. According to Lehr, approval of the standard will have two significant effects. First, it will spur adoption of PoE technology even in applications where there is no immediate PoE requirement. Second, it will help reduce the premium paid for PoE capability in networking equipment. Until now, a few key applications -- voice-over-IP telephones, wireless-LAN access points, and security cameras -- have been driving PoE adoption. That's because these applications stand to benefit greatly from two PoE advantages. One is the ability to power network peripherals off of UPS-backed power supplies for always-on reliability. Another is the ability to install peripherals in remote locations without running ac power cables to those installations. The existence of a ratified PoE standard is likely to encourage network system designers to specify PoE capability in their hardware purchases even before there's an immediate need to power any specific peripherals. As Lehr explains, "IT managers will be looking two to five years down the road \[the approximate life of an Ethernet switch\] with the expectation that some PoE applications will eventually be desired." Another impact of ratification will be a lower premium for powered Ethernet switches versus their nonpowered counterparts. According to Lehr, PoE currently adds about 50% to the cost of Ethernet deployment, but new PoE chip sets are expected to lower that premium to 25%. The new chips will do so by reducing the number of components and the board space needed to implement PoE. Citing his company's products as examples, Lehr described how PoE technology has progressed over time. In 1999, when PowerDsine developed a 24-port midspan device (a unit that adds PoE capability to unpowered LANs), the design required 1700 components. Today, the company is working with Motorola to develop a chip that will cut that parts count to less than 120. As PoE designs become more integrated and less expensive, some equipment makers may look to exploit PoE for products that weren't originally envisioned as LAN products. The nearly 13 W of power available on a powered LAN port will be sufficient to charge the batteries in cell phones and other portables. There's even been talk of laptops powered by PoE. With IEEE 802.3af creating a global standard that employs an RJ-45 "power plug" worldwide, the option of running or charging various products off the LAN could become very desirable. Although products like the LAN-powered shaver (a concept once proposed to PowerDsine executives) may never make it off the drawing board, there's no telling what other unexpected applications may emerge. To comment on this Editor's View, go to Reader Comments at the online version of this article at http://lists.planetee.com/cgi-bin3/DM/y/eRyK0DJhUf0EmQ0BBdi0AE ********************** 2. News -- From The Editors ********************** ***Speedy ARM-Based CPU Targets Mobile Systems Claiming the speed crown as the fastest CPU for mobile applications, the S3C2440 operates at a core frequency of up to 533 MHz. Its manufacturer expects it to drive the emergence of new services, functions, and multimedia content for handheld devices like PDAs and smartphones. In addition to the high-speed ARM 920T CPU core, the S3C2440 enables value-added end-user features by including a camera interface, thin-film-transistor and STN LCD display support, SD/MMC/SDIO memory-card interfaces, USB host and device ports, and a touchscreen interface. The processor supports major operating systems, including Windows CE, Palm OS, Symbian, and Linux. A built-in NAND flash boot loader allows high-density NAND flash memory to be used without having to install an additional support chip. The S3C2440 is sampling now in speed grades of 300, 400, and 533 MHz. Samsung Electronics Co. Ltd. ==> http://lists.planetee.com/cgi-bin3/DM/y/eRyK0DJhUf0EmQ0BBdj0AF ***Fingerprint Sensor Integrates Easily Into Handhelds The MBF310 capacitive fingerprint sweep sensor features an advanced auto-finger detection (AFD) circuit and an on-board FIFO memory. It's optimized for easy integration into handheld systems. The FIFO memory holds the image data until the CPU is available, allowing the MBF310 to work within the processing constraints of mobile devices. The AFD circuit allows the device to enter a low-power standby mode until a finger is detected. Frame sweep rates of 20 cm/s (8 in./s) are possible. The MBF310 incorporates eight image-sensing rows, compared with 32 rows in the previous version, enabling a reduction in the sensor area of 30% and lowering cost. The compact 42-contact plastic fine-pitch BGA package includes an integrated finger-swipe guide that serves as a tactile feature to help locate and align the finger. Samples will be available in August. In lots of 1000, the sensor sells for $6.00 each. Fujitsu Microelectronics ==> http://lists.planetee.com/cgi-bin3/DM/y/eRyK0DJhUf0EmQ0BBdk0AG ***Two-Wire Temperature Transmitter Has HART Small enough to fit into standard (DIN B) small-connection heads, the Mp82700H head-mount smart transmitter now meets the industry-standard HART (highway-addressable remote transducer) protocol. It measures 1/7 in. in diameter and 1 in. high. Other features include a universal input (13 thermocouples, nine resistance temperature detectors, and voltage and ohms), 500-V dc isolation, 0.1% selectable on/off linearization, +/- 0.1% set-scale accuracy, selectable upscale/downscale sensor failure, 4- to 20-mA or 20- to 4-mA outputs, and radio-frequency-interference/electromagnetic-interference immunity from dc to 1 GHz. The transmitter operates from a 13- to 40-V dc supply. Polarity protected, it has a five-year warranty against failure. The unit costs $250 in single-unit lots. S-Products Inc. ==> http://lists.planetee.com/cgi-bin3/DM/y/eRyK0DJhUf0EmQ0BBdl0AH ***ARM9 Energizes Low-Power MCU Extending its BlueStreak product line, Sharp has introduced the LH7A4xx family of microcontrollers. The devices sport a 200-MHz ARM922T core, a 16-kbyte cache, an 80-kbyte SRAM, a color LCD controller, a flash-card interface, an AC'97 codec, a smart battery monitor, a USB, three UARTs, and a 10-channel direct memory access. All of that is packed into a 256-pin PBGA package. The low-power core consumes only 1.33 mW/MIPS. The LH7A404 incorporates the BlueStreak Java Engine Technology. Pricing is under $13. Sharp USA ==> http://lists.planetee.com/cgi-bin3/DM/y/eRyK0DJhUf0EmQ0BBdm0AI ********************** 3. Upcoming Industry Events ********************** Aug. 4-5, iWirelessWorld/Wireless Developer Conference, Los Angeles, Calif. http://lists.planetee.com/cgi-bin3/DM/y/eRyK0DJhUf0EmQ0BBOf0Ao Aug. 4-7, Linuxworld Conference and Expo, San Francisco, Calif. http://lists.planetee.com/cgi-bin3/DM/y/eRyK0DJhUf0EmQ0BBOg0Ap Aug. 12-14, Wescon, San Francisco, Calif. http://lists.planetee.com/cgi-bin3/DM/y/eRyK0DJhUf0EmQ0BBOh0Aq Aug. 17-19, Symposium on High Performance Chips (a.k.a. Hot Chips), Stanford, Calif. http://lists.planetee.com/cgi-bin3/DM/y/eRyK0DJhUf0EmQ0BBPN0AR August 25-27, International Symposium on Low Power Electronics and Design (ISLPED), Seoul, Korea http://lists.planetee.com/cgi-bin3/DM/y/eRyK0DJhUf0EmQ0BBHD0A8 ********************** 4. Magazine Highlights ********************** In case you missed them, here are some of the high points of our most recent issue, July 21, 2003. * Cover Story: Technology Report Flat-Panel Displays: Poised To Take Over Large And Small Screens A look at the numbers shows elevated performance levels and lower costs for several on-the-rise display technologies. * Leapfrog: First Look -- New Mini-Card Form Factor Embeds PCI Express Spec release opens door for laptops, embedded systems to exploit PCI Express mini-card products. * Leapfrog: First Look -- High-Performance 10-Gbit Ethernet Switch Knocks Price Down Squeezing together a dozen 10-Gbit/s ports plus a memory-based switch fabric, a single-chip Ethernet switch squashes per-port costs by a factor of 100. * Design View / Design Solution -- Take Advantage Of All That USB On-The-Go Has To Offer A USB OTG controller can be easily integrated onto an ASIC that's based on different processors and operating systems. For the complete Table of Contents, go to http://lists.planetee.com/cgi-bin3/DM/y/eRyK0DJhUf0EmQ0BBdn0AJ




Editorial: Lucinda Mattera, Associate Chief Editor: mailto:[email protected] Advertising/Sponsorship Opportunities: Bill Baumann, Associate Publisher: mailto:[email protected]


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