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PowerMX Working Group Public Page

Last updated 22 hours ago by Brent Carlson


This site contains PowerMX specifications, links to product providers, and other publicly available information.  This site is managed by the PowerMX Working Group, a group established by the National Research Council of Canada.  All specifications and content on this web site may be freely accessed, downloaded, and used.  See the "Legal Information" section of each specification for specific disclaimers and permissions.

PowerMX is a registered prohibited mark, file no. 922884, for use and adoption in Canada under section 9 of the Trade-Mark Act of Canada.


PMX.1 Base Spec -- 2014-08-22 corrections & clarifications (Preliminary)

PowerMX PMX.1.1 Motherboard Mesh Specification, Preliminary (Draft), 2014-10-15 (defines alternate PMXM-to-PMXM mesh connectivity)

PowerMX-PMX.1.2 Standard Monolithic PMX_IOC Mezzanine Card Mechanical Specification, Preliminary (Draft), 2015-01-30 (NEW!! defines standard I/O mezzanine card dimensions)

Supplementary Files:

NRC advises that the use of supplementary files in this section is completely voluntary and NRC makes no claim as to accuracy or suitability for any application.  Use at your own risk.

PowerMX motherboard and mezzanine board SolidWorks models  

PowerMX motherboard 3D pdf

PowerMX PMXM 3D pdf

PowerMX PMX_IOC 3D pdf


List of Audited Providers:



Auxilliary Components:

NRC advises that the use of components, information, and files in this section is completely voluntary and NRC makes no claim as to accuracy or suitability for any application.  Use files and acquire components from 3rd-party suppliers completely at your own risk.

PMXM puller/extractor tool drawing This is a dimensioned drawing of a PMXM puller/extractor tool. PMXM puller/extractor tool image  It is not yet tested.  This tool can be ordered from Imagination Machine Works P/N: 058-11000-PMXM-Puller.




The Base Specification places no requirements on performance.  Nevertheless, performance of SERDES channels is key to the viability of PowerMX to ensure a sufficient technology lifetime and to address a wide range of performance challenges.

The following are eye diagrams produced using Mentor Graphics HyperLynx SI GHz (9.0.1), 3D EM modeller (15.3), Altera Stratix V GX/GT transceiver models, and FCI Meg-Array(R) connector models for nearest-neighbour end-to-end PowerMX PMXM-to-PMXM connections.


Note that the 28G eye is not open enough for the receiver indicating that next generation 28G transceivers are required.  The underlying physical PCB design incorporates Meg-6 material, via, micro-via, trace, anti-pad, and 3D stackup geometries on the motherboard and plug-in boards believed necessary for actual complex designs.  Verification of these approaches with real designs is in process.

Also see FCI Meg-Array(R) performance testing report at: FCI Meg-Array technical data


Applications Examples:

The following graphics illustrate applications examples.

This first example is an illustrative collage of a 4-site motherboard with PMXM and I/O (PMX_IOC) plug-in card possibilities:


This collage contains representations of:

1. Standard and extended PMXM plug-in boards.
2. Plug-in and "hardened" PMXM and PMX_IOC sites.
3. Panel-ready fiber plug-in modules.
4. Motherboard-to-motherboard bridging plug-in boards.
5. Plug-in monolithic PMX_IOC boards c/w and w/o FPGAs.
6. Monolithic backplane transition PMX_IOC module with backplane drivers/repeaters.
7. -48VDC supply with 3, 12V 1/8th brick Vicor IBCs providing up to 1500 W peak power capability.
8. LVDC regulators for PMXM sites, mounted on the Rear Side of the motherboard.

The 4-site motherboard is 17.25" wide and able to fit into a 19" rack-mount server box.


Here is an example of a 2-site motherboard mounted in a server-box chassis with no plug-in boards installed:



Here are two examples of the 2-site chassis loaded with plug-in boards:





Many other chassis as well as blade configurations are possible.  Fan placement and cooling strategy illustrated here is notional and requires further investigation.