PICMG approves new CompactPCI Express spec


PCI Industrial Computer Manufacturers Group (PICMG) —a consortium of 400-plus companies collaboratively developing open specifications for high-performance telecom and industrial computing applications—has recently released the CompactPCI Express Specification denoted EXP.0. [PCI, in turn, stands for peripheral component interconnect.] The new spec brings PCI Express technology to the popular PICMG 2.0 CompactPCI (cPCI) form factor, while maintaining compatibility with cPCI hardware and software, according to the consortium. More than 40 companies participated in developing CompactPCI Express specification.

Objective of the specification is to meet future needs of the CompactPCI, PXI, military, and aerospace markets. CompactPCI Express offers a migration path for users of cPCI form factor who want the added performance of PCI Express. CompactPCI Express defines connector, electrical, and mechanical requirements of 3U/6U system boards, peripheral boards (type 1 and 2), switch boards, and backplanes. (Type 1 peripheral and system boards have the same pin definitions, allowing a CPU board to be designed to work in both slot types. Type 2 peripheral boards can be used in type 1, type 2, and hybrid slots. Switch boards provide a modular way to provide PCI Express fan out.)

The specification defines the system slot and board to have up to 24 lanes and up to four links of PCI Express for up to 6 GB/s system bandwidth per direction. Type 1 peripheral slots and boards can have up to 16 lanes of PCI Express for up to 4 GB/s bandwidth per direction; Type 2 peripheral slots are specified for up to 8 lanes of PCI Express for up to 2 GB/s.

'CompactPCI Express leverages the Advanced Differential Fabric (ADF) connector used by AdvantedTCA to carry the PCI Express Signals,' says Mark Wetzel of National Instruments and EXP.0 subcommittee chair. 'The specification maintains hardware compatibility with CompactPCI by allowing backplanes to have CompactPCI slots as well as hybrid slots, which
support CompactPCI, PXI, and Compact PCI Express peripheral boards.'

The complete specification is available to PICMG members and can be purchased by non-members. For more information on new PICMG developments, visit www.picmg.org/picmgnewinitiatives.stm .

The trend continues the capabilities expansion of previous form factors. For related news from Control Engineering, see also “ PXI takes the Express.

Frank J. Bartos, executive editor, Control Engineering

No comments
The Engineers' Choice Awards highlight some of the best new control, instrumentation and automation products as chosen by...
The System Integrator Giants program lists the top 100 system integrators among companies listed in CFE Media's Global System Integrator Database.
The Engineering Leaders Under 40 program identifies and gives recognition to young engineers who...
This eGuide illustrates solutions, applications and benefits of machine vision systems.
Learn how to increase device reliability in harsh environments and decrease unplanned system downtime.
This eGuide contains a series of articles and videos that considers theoretical and practical; immediate needs and a look into the future.
Robotic safety, collaboration, standards; DCS migration tips; IT/OT convergence; 2017 Control Engineering Salary and Career Survey
Integrated mobility; Artificial intelligence; Predictive motion control; Sensors and control system inputs; Asset Management; Cybersecurity
Big Data and IIoT value; Monitoring Big Data; Robotics safety standards and programming; Learning about PID
Featured articles highlight technologies that enable the Industrial Internet of Things, IIoT-related products and strategies to get data more easily to the user.
This article collection contains several articles on how automation and controls are helping human-machine interface (HMI) hardware and software advance.
This digital report will explore several aspects of how IIoT will transform manufacturing in the coming years.

Find and connect with the most suitable service provider for your unique application. Start searching the Global System Integrator Database Now!

Mobility as the means to offshore innovation; Preventing another Deepwater Horizon; ROVs as subsea robots; SCADA and the radio spectrum
Future of oil and gas projects; Reservoir models; The importance of SCADA to oil and gas
Big Data and bigger solutions; Tablet technologies; SCADA developments
Automation Engineer; Wood Group
System Integrator; Cross Integrated Systems Group
Jose S. Vasquez, Jr.
Fire & Life Safety Engineer; Technip USA Inc.
This course focuses on climate analysis, appropriateness of cooling system selection, and combining cooling systems.
This course will help identify and reveal electrical hazards and identify the solutions to implementing and maintaining a safe work environment.
This course explains how maintaining power and communication systems through emergency power-generation systems is critical.
click me