ADLINK Express-HRR - Manual (Page 8)

Chapter 2 Product Overview
4 Reference Manual Express-HRR
Baseboard designers can utilize as little or as many of the I/O interfaces as necessary. The baseboard can
therefore provide all the interface connectors required to attach the system to the application specific
peripherals. This versatility allows the designer to create a dense and optimized package, which results in a
more reliable product while simplifying system integration. Most importantly, COM Express modules are
scalable, which means once an application has been created, the ability to diversify the product range is
possible through the use of different performance class modules. Simply unplug one module and replace it
with another. No redesign is necessary.
COM Express Architecture
The COM Express specification was developed by the PCI Industrial Computer Manufacturing Group
(PICMG) in close collaboration with many leading companies across the embedded industry in order to find
an implementation solution to handle upcoming new high-speed serial I/Os, processors, and chipsets. COM
Express specifies four form factors, as well as seven different types of connector pinouts.
The four form factors are referred to as Mini, Compact, Basic, and Extended. The Mini form factor targets
battery powered, mobile, and handheld system designs and features a footprint of just 84mm x 55mm. The
Compact form factor is 95mm x 95mm, designed to match the requirements of small applications. The Basic
module footprint is 125mm x 95mm and focuses on space-constrained, low power systems which typically
do not contain more than one horizontal mounted SODIMM. The Extended footprint is slightly larger at
155mm x 110mm and supports up to two full-size, vertically mounted DIMM modules to accommodate
larger memory configurations for high-performance CPUs, chipsets, and multiprocessor systems. The
placement of the shielded 220-pin connectors and the mounting holes are identical between these four
footprints.
Figure 2-1. Mini, Compact, Basic and Extended Form Factors
Mini Form Factor Compact Form Factor Basic Form Factor
Note:
Measurements are in millimeters
Extended Form Factor
COM_FormFactors_b