An Introduction to MicroTCA
MicroTCA is one of the latest significant architecture efforts from the standards-based community for embedded computing systems. The MicroTCA architecture allows large arrays of AdvancedMC modules to be used in a wide range of applications where a lower cost solution is required than could be achieved by the standard AdvancedTCA architecture. 
The MicroTCA backplane allows single or redundant virtual carriers to provide power management, platform management and fabric connections to greater numbers of modules than a single physical carrier card could support in a classic ATCA application.
MicroTCA chassis will be offered in the following configurations:
- Subrack – a typical 19” or ETSI size rackmount unit
- Cube – a more cubic shape. Can be placed side by side or stacked in a cabinet.
- Pico – the cards are mounted horizontally, saving horizontal space. These chassis will likely not exceed 3U heights.
See www.nextgenbackplanes.com for examples of Elma’s Cube and Subrack chassis.
MicroTCA systems will support up to 48 single width, half height AdvancedMC modules in a 19" EIA rack or an assortment of full height modules either in single or double widths. AdvancedMC modules are targeted for such modular applications as storage arrays, firewalls, blade servers, and even home entertainment centers.
The backplanes can have a power module slot(s), located inside the card cage, although this is not a requirement. A MicroTCA system must have a MicroTCA Carrier Hub (MCH). The MCH provides interconnect, power conversion, clock distribution, and system management functionality. The MCH would typically be plugged into a backplane slot in the card cage, but they don’t necessarily have to be placed there.
Each MicroTCA module may dissipate between 20 and 60 watts each and the platform management scheme is designed to support applications from 99.99% to 99.999% availability. AdvancedMC module specifications have already been released and the most recent, AMC.3 (storage systems) is nearing completion.
Elma Bustronic has created a 14-slot single star MicroTCA backplane with 12 AMC slots, 1 power module slot and 1 MCH. The Elma group has also developed three MicroTCA chassis to date -- in various styles.
For more information on MicroTCA, contact Elma Bustronic at techsupport@bustronic.com
Justin Moll
Director of Marketing
Elma Bustronic
510-490-7388
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