Compaq manual Copyright COM Express Extension Specification Rev

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2 Introduction

Differential Signalling) interfaces. These include the PCI bus and parallel ATA on the one hand and PCI Express and Serial ATA on the other hand.

Key features include:

￿Rich complement of contemporary high bandwidth serial interfaces, including PCI Express, Serial ATA, USB 2.0, and Gigabit Ethernet

￿32-bit PCI, LPC and Parallel ATA options preserved for easy interface to a range of peripherals

￿Extended power-management capabilities

￿Robust thermal and mechanical concept

Cost-effective design

￿Legacy-free design (no Super I/O, PS2 keyboard or mouse)

￿ COM Express™ module size with two currently defined footprint options (“Basic” and “Extended”) to satisfy a range of performance r equirements. The option for future more compact footprints like microETXexpress and nanoETXexpress are present.

￿High-performance mezzanine connector with several defined pin-out types to satisfy a range of application requirements

The COM ExpressExtension specification has been created to support to a range of vertical embedded markets. It has been formulated to be applicable to a broad range of system types, from floor-installed and bench-top to mobile handheld.

Markets and applications include but are not limited to:

￿Healthcare - clinical diagnostic imaging systems, patient bedside monitors, etc.

￿Retail & advertising - electronic shopping carts, billboards, kiosks, POS/POI systems, etc.

￿Gaming & entertainment - simulators, slot machines, etc.

￿Test & measurement - scientific and industrial test and measurement instruments

￿Industrial automation - industrial robots, vision systems, etc.

￿Security - digital CCTV, luggage scanners, intrusion detectors, etc.

￿Defence & government - unmanned vehicles, rugged laptops, wearable computers, etc.

Systems developed according to the COM ExpressExtension Specification require the implementation of an application-specific carrier board that accepts the module. The carrier board is typically a 4- to 8-layer PCB. User-specific features such as external connector choices and locations and peripheral circuits can be tailored to suit the application. The OEM can focus on application-

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Contents COM Express Extension Specification This page intentionally left blank Table of Contents 2 PCI Technical Support User InformationAbout This Document Copyright NoticeCOM Express Computer-On-Module COM Express Extension SpecificationIntroduction COM Express Extension Design GuideCopyright COM Express Extension Specification Rev Objective Overview Module Size COM Express Module sizesSmall Form Factor nano, COM Express Type Figure Overview three module sizesFigure Small Form Factor nano Graphic Signal Description Signal DescriptionTable Graphic Signal Description Row C for Pin- out Type Table Graphic Signal Description Row D for Pin- out Type Tmds Clock + Tmds Clock Hardware extensions Wide Range Input Power for nano SmallFormFactor SFFGPO0 Gpio General Purpose I/O Recommended UseSdio Pin description Alternative Gpio use for Sdio InterfaceThermal Control Electrical characteristicsSoftware extensions Smart Battery Bios supportTPM support User editor for default settings Legacy Super I/O support in BiosCmos backup in Bios Console redirection in BiosGeneral PC Architecture 1 ISA, Standard PS/2 ConnectorsApendix a PC Architecture Information Buses3 USB Ports1 RS-232 Serial Serial ATAProgramming Appendix B DOCUMENT-REVISION History