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Promising technologies for embedded
designs are ready for the big time. The overriding
question will be whether or not there's enough demand
for vendors to implement these technologies in sufficient
quantities this year. Clear hardware leaders include
Serial ATA, PCI Express, PCI-X, and ExpressCard. On
the software side, Eclipse 3.0 will bring a lot to
the table, and the migration to 32-bit MCUs will raise
demand for new tools. A good deal of software work
in the 64-bit space will take advantage of new processors
appearing on the desktop and in low-end servers. Yet
designers will face key decisions. Which technologies
do I incorporate? Which legacy technologies do I discard?
Switching to high-speed serial interfaces like PCI
Express, HyperTransport, or RapidIO brings faster,
more expandable systems to the table?and significant
new design problems too.
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The latest board
design tools and chip sets for these and other
technologies like InfiniBand will dramatically
ease the designer's job. Migration continues
from the elimination of parallel and serial
interfaces with USB to disk drives that incorporate
Serial ATA (SATA) and Serial Attached SCSI (SAS).
Software compatibility and
wide availability of hardware are keys to quick
adoption. Currently, there's a huge ramp-up
in SATA and SAS disk drives. New, smaller drives
take advantage of the reduced interface pin
count, while larger buffer memories on these
devices provide better performance. A common
physical layer will lead to adapters that support
either type of drive, greatly reducing the number
of options compared to today's SCSI and integrated-development-environment
controllers.
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VME remains the commercial off-the-shelf
(COTS) cash cow, but it also will be moving more heavily
into the high-speed serial and wireless areas. This
will be the year for ironing out standards in the
VME realm using existing technology in military and
medical applications.
CompactPCI and AdvancedTCA have an
edge on fabric backplanes, making them a good option
for new designs. But their success will rely heavily
on growth in communications and adoption in other
areas. It's a buyers market now, with many vendors
lining up to sell this new technology. Fabric backplanes
and standardized system management support is still
new to most application developers, slowing delivery
of new applications due to increased learning curves.
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