ADLINK Express-HRR - Manual (Page 7)

Express-HRR Reference Manual 3
Chapter 2 Product Overview
This introduction presents general information about the COM Express™ architecture and the Express-HRR
Computer-on-Module (COM). After reading this chapter you should understand:
• COM Express concept
• COM Express architecture
• Express-HRR Product Description
• Express-HRR Major Components
• Express-HRR Connectors, Headers, and Sockets
• Express-HRR 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-HRR 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, Serial ATA, USB 2.0,
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