PMC and XMC Modular I/O Tech Note

PMC and XMC Modular I/O – Established Standards in High Performance Systems

The IEEE standard for PCI Mezzanine Cards (PMCs) initiated the first successful approach to truly modular I/O devices. Subsequent development has presented system integrators with the XMC modules, introducing support for switched interconnect protocols, adding contacts serial lanes for high-speed data transfer, and providing better definition for carrier cards.

Subsequent development has presented system integrators with the XMC version, introducing support for switched interconnect protocols, adding serial lanes for highspeed data transfer, and providing better definition for carrier cards.

Summary

PMC and XMC modules will continue to deliver high performance and savings in mature, well-characterized systems that depend on accurate, reliable data input such as defense, aerospace, and scientific applications. Both PMC and XMC are particularly well suited to durable operation in harsh environments, including situations that see extended temperature ranges and exposure to extreme weather conditions. As other promising standards come and go, PMC and XMC standards provide a stable proven platform where the challenges are better understood, product life-cycles are longer, and budgets are tighter. PMC and XMC I/O modules will continue to provide dependable results from a wide selection of Commercial Off-The-Shelf (COTS) options at reasonable prices.

 

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