A Computer-On-Module, or COM, is a Module with all components necessary for a bootable host computer, packaged as a super component. A COM requires a Carrier Board to bring out I/O and to power up. COMs are used to build computer solutions and offer OEMs fast time-to-market with reduced development costs. Like integrated circuits, they provide OEMs with significant freedom in meeting form-fit-function requirements. For all these reasons, the COM methodology has gained much popularity with OEMs in the embedded industry.
COM Express® is an open industry standard for Computer-On-Modules. It is designed to be future-proof and to provide a smooth transition path as technology advances. Key features include:
- A rich complement of contemporary high bandwidth serial interfaces, including PCI Express, Serial ATA, USB, and Gigabit & 10Gb Ethernet
- Extended power-management capabilities
- Robust thermal and mechanical concept
- Cost-effective design
- Legacy-free design (no Super I/O, PS2 keyboard or mouse)
- Small Module size with multiple footprint options to satisfy a range of performance requirements
- High-performance mezzanine connector with several pin-out types to satisfy a range of applications
- Extensive video port support, including VGA, LVDS, DP, eDP, DVI and HDMI terminal drivers plus x16 PEG port to Carrier Board graphics controller
The COM Express® specification has been created to appeal to various vertical embedded markets. It has also been formulated to apply to a broad range of form factors, from floor-installed to bench-top to handheld.
Systems based on the COM Express® Specification require the implementation of an application-specific Carrier Board that accepts the Module. User-specific features such as external connector choices, locations, and peripheral circuits can be tailored to suit the application. The OEM can focus on application-specific features rather than CPU board design. The OEM also benefits from a wide choice of Modules providing a scalable range of price and performance upgrade options.
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