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Express-IBR Reference Manual 3

Chapter 2 Product Overview

This introduction presents general information about the COM Express™ architecture and the Express-IBR

Computer-on-Module (COM). After reading this chapter you should understand:

• COM Express concept

• COM Express architecture

• Express-IBR Product Description

• Express-IBR Major Components

• Express-IBR Connectors, Headers, and Sockets

• Express-IBR Specifications

COM Express Concept

COM Express is an open-industry standard, defined specifically for COM boards. Its creation provides the

ability to make a smooth transition from legacy parallel interfaces to the newest technologies based on serial

buses available today. COM Express modules are available in the following form factors:

• Mini 84mm x 55mm

• Compact 95mm x 95mm

• Basic 125mm x 95mm

• Extended 155mm x 110mm

The COM Express specification 2.0 defines seven different pinout types.

The Express-IBR utilizes the Basic form factor and the Type 6 pinout definition, featuring two high

performance connectors that ensure stable data throughput. The Type 6 pinout removes the PCI interface

signals and replaces them with DisplayPort and HDMI display signals, thereby expanding the range of

potential video peripherals beyond the familiar VGA, LVDS, and SDVO interfaces.

The COM board integrates all core components and is mounted onto an application specific baseboard.

COM boards are legacy-free designs (no Super I/O, PS/2 keyboard, and PS/2 mouse) and provide most of

the functional requirements for any application. These functions include, but are not limited to a rich

complement of contemporary, high-bandwidth serial interfaces such as PCI Express, SATA, USB 3.0, and

Gigabit Ethernet. The robust thermal and mechanical concept of the COM board, combined with extended

power management capabilities, is perfectly suited for all applications.

Table 2-1. COM Express Pin-out Types

Types Connector Rows PCI Express Lanes PCI IDE Channels LAN ports

Type 1 A-B Up to 6 1

Type 2 A-B C-D Up to 22 32 bit 1 1

Type 3 A-B C-D Up to 22 32 bit 3

Type 4 A-B C-D Up to 32 1 1

Type 5 A-B C-D Up to 32 3

Type 6 A-B C-D Up to 24 1

Type 10 A-B Up to 4 1

1 2 3 4 5 6 7 8 9 10 11 12 13 14 ... 63 64

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