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Standards Updates

The July 2020 VITA standards meeting was a virtual only meeting via WebEx. This update is based on the results of that meeting.

Contact VITA if you are interested in participating in any of these working groups. Visit Events for details on upcoming VITA meetings. If your company is not attending, you are missing an excellent opportunity to network, contribute and influence the future of VITA standards. We meet every two months and would love see more participation at our meetings and working groups.

Several working groups have current projects underway; the following roundup summarizes those projects:

ANSI/VITA 42.0: XMC: Switched Mezzanine Card

Objective:  The VITA 42.0 XMC standard defines a popular mezzanine card architecture using a PCIe interconnect to host carrier modules.
Status: The standard is due for its five-yea review. The working group is reviewing revisions to bring the standard in line with current practice in related standards.

ANSI/VITA 46: VPX Baseline

Objective:  The VITA 46.0 base standard defines physical features that enable high-speed communication in a compliant system.
Status: The standard is open for revisions. The working group is reviewing updates for compliance requirements and requirements for 12 V power.

ANSI/VITA 46.11: VPX System Management

Objective:  The VITA 46.11 standard defines a system management architecture for VPX systems.
Status: The standard is due for its five-year review. Improvements based on feedback from the community are under consideration.

VITA 46.30: VPX: Higher Data Rate

Objective: The VITA 46.30 standard defines a VPX connector that supports higher data rates, to at least 25 Gbaud, for protocols such as 100GBASE-KR4 Ethernet and PCIe Gen 4. The higher data rate connectors compliant to VITA 46.30 are intermateable with legacy VITA 46.0 connectors and follow the same form factor.
Status: ANSI/VITA 46.30-2020 has been approved for publishing.

VITA 46.31: VPX: Higher Data Rate, Solder Tail

Objective: The VITA 46.31 standard defines a standard for a VPX connector that supports higher data rates, to at least 25 Gbaud, for protocols such as 100GBASE-KR4 Ethernet and PCIe Gen 4. The connectors feature a short solder tail intended to be soldered into a blind via. The higher data rate connectors compliant to VITA 46.31 are intermateable with legacy VITA 46.0 connectors and follow the same form factor.
Status: VITA 46.31 is approved for VITA Standard Draft Trial Use available to VITA members and is available at the VITA online store.

VITA 51.4: Reliability Component Derating

Objective: The goal of this study group is to develop a new component derating standard.
Status: This working group has joined forces with the IEEE to jointly develop this standard under IEEE-2818. A draft document has been developed. The working groups encourages industry participation and inputs for determining the appropriate derating considerations, specifically what derating levels your company typically uses.  This would help the working group find consensus derating levels for components that are useful for the industry.

ANSI/VITA 61: XMC 2.0

Objective:  The VITA 61 XMC 2.0 standard, based upon VITA 42.0 XMC, defines an open standard for supporting high-speed, switched interconnect protocols on an existing, widely deployed form factor, but utilizing an alternate, ruggedized, high-speed mezzanine interconnector.
Status: The standard is due for its five-year review. Comments on revisions to match VITA 42 changes are now in review.

VITA 62.x: Modular Power Supply

Objective: The VITA 62.0 standard describes requirements for building a power supply module that can be used to power a VPX chassis. The modules fit within the standard envelope defined for VPX modules in the VITA 48.0 standards.
Status: The standard is being revised to be in line with additions made to the VPX standards. Additional working groups are developing complimentary standards. VITA 62.1 is focused on a three-phase high-voltage power supply for 3U while VITA 62.2 is developing a 270-volt connector standard. Both working groups have draft documents in review.

Status: ANSI/VITA 62.2-2020 has been approved for publishing.

VITA 65: OpenVPX Architectural Framework for VPX

Objective: The OpenVPX architectural framework standard is a living document that is regularly updated with new profile information and corrections.
Status: The ANSI/VITA 65.0-2019 and ANSI/VITA 65.1-2019 standards were ratified by ANSI and VITA. The standard is available for download by VITA members and is posted at the VITA Store for purchase by non-members. New profiles based on work with Sensors Open Systems Architecture (SOSA) are being developed.

VITA 66.5: VPX: Optical Interconnect, Spring-Loaded Contact on Backplane

Objective: This document describes an open standard for configuration and interconnect within the structure of VITA 66.0 enabling an interface compatible with VITA 46 containing blind mate optical connectors with fixed contacts on the Plug-In Module and floating displacement on the backplane.
Status: The working group is developing the draft document.

ANSI/VITA 67.2: VPX: Coaxial Interconnect, 6U, 8-Position SMPM Configuration

Objective: The VITA 67.2 standard defines the configuration and inter-connect within the structure of VITA 67.0 enabling a 6U VITA 46 interface containing multi-position blind-mate analog connectors with up to 8 SMPM contacts.

Status: ANSI/VITA 67.2-2020 has been approved for publishing and is available at the VITA online store.

ANSI/VITA 67.3: VPX: Coaxial Interconnect on VPX, Spring-Loaded Contact on Backplane

Objective: The VITA 67.3 standard defines an open standard for configuration and interconnect within the structure of VITA 67.0, enabling an interface compatible with VITA 46 containing multi-position blind-mate analog connectors with SMPM-style contacts having fixed contacts on the plug-in module and spring action on the backplane.
Status: The standard is open for revision. The document has completed public ANSI/VITA review and is in the comment resolution phase.

VITA 68.2: VPX: Compliance Channel

Objective: This standard defines a VPX compliance channel, including common backplane performance criteria required to support multiple fabric types across a range of defined baud rates. This standard allows backplane developers to design a back-plane that supports required bit error rates (BER) for multiple fabric types. This also allows module developers to design plug-in modules that are interoperable with other modules when used with a compliant backplane.
Status: The document has completed public ANSI/VITA review and ballot. The working group is resolving comments from the ballot.

VITA 74.4: SpaceVNX

Objective: The VITA 74.4 standard defines a mechanical format for standardization of switched serial interconnects for small form-factor applications.
Status: The study group is gathering inputs for development of a potential standard for space platforms.

ANSI/VITA 78: SpaceVPX Systems

Objective: VITA 78 is an open standard for creating high-performance, fault-tolerant interoperable backplanes and modules to assemble electronic systems for spacecraft and other high-reliability (availability) applications. Such systems will support a wide variety of use cases across the aerospace community, including some non-spacecraft systems. This standard leverages the VPX standards family and the commercial infrastructure that supports these standards in non-space applications.
Status: The standards are open for revisions. The documents have completed public ANSI/VITA review and are in the comment resolution phase.

VITA 78.1: SpaceVPX Lite Systems

Objective: This standard leverages the work done on ANSI/VITA 78 to create a standard with an emphasis on 3U module implementations. The most significant change from SpaceVPX is to shift the distribution of utility signals from the utility-management module to the system-controller module to allow a radial distribution of supply power to up to eight payload modules.
Status: The working group has developed a draft document of the standard that is currently in working group ballot.

VITA 87: MT Circular Connectors

Objective: The VITA 87 MT circular connector standard defines a standard for circular connectors with optical MT. Circular connector shells are compliant to MIL-STD-38999. MT offer options for 12 or 24 fibers per MT and for physical contact or lensed MT.
Status: The working group is developing a draft document.

VITA 88: XMC+

Objective: The VITA 88 XMC+ standard defines an improved electrical/mechanical mezzanine connector for XMC applications. Mechanically, the proposed connector is compatible with VITA 42/61 footprints, achieving backward compatibility while offering improved mating/unmating forces. Electrically, speeds up to PCIe Gen 5 (32 Gbps) and maximum SI performance are supported.
Status: The working group is developing a draft document.

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