3U 12-slot backplane meets SOSA 1.0
An update to Elma’s original CMOSS reference backplane has been announced. The 12-Slot, 3U backplane is aligned to SOSA (Sensor Open Standards Architecture) 1.0 and includes profiles that support C5ISR/EW (command, control, computers, communications, cyber, intelligence, surveillance and reconnaissance / electronic warfare) Modular Open Suite of Standards (CMOSS).
The new 3U OpenVPX backplane offers a mix of plug-in card (PIC) slots that enable complex, high speed signal processing and system development, supporting up to 100 Gigabit Ethernet (GbE).
The SOSA-aligned backplane supports high speed signals on all the data paths and incorporate VITA 67.3 connectors that are compatible with legacy VITA 67.1 and VITA 66.4 RF and optical I/O connectors. In addition to optical fibre and RF connectivity, the backplane features precision network timing (PNT) and integrates mixed payload modules including single board computers (SBCs), switches, radial clocks and system expansion.
Ken Grob, director of Embedded Computing Development, at Elma, said the new SOSA-aligned backplane “establishes the foundation for system development of high-performance mission-critical C5ISR and EW systems based on a common, modular architecture that lowers lifecycle costs, allows rapid technology insertion and enables complex, high speed signal processing.”
The CMOSS reference backplane offers a range of OpenVPX slot profiles aligned with the SOSA standard. It provides a dual domain architecture, supporting MORA, ML2B and Victory Messaging. It can be used for MOSA (Modular Open Standards Approach) -aligned open standards-based military computing systems that require critical high speed data communications, necessary for sensor-based systems.
The backplane can handle the highest data rates possible with expansion plane links supporting PCIe Gen 4, and optionally 100GBASE-KR4. Data and control planes links support 100GBASE-KR4 and 25GBASE-KR respectively. There are also two switch slots, a PNT timing slot, nine payload slots and two VITA 62 PSU slots.
The optical interfaces enable the VPX architecture to support higher overall bandwidths by augmenting the copper interconnects, allowing multiple fibre optic interfaces per slot. This increases the overall connectivity providing additional data paths for system designers. The VPX optical interface ensures that this backplane will be able to meet future bandwidth requirements, Elma added.
The backplane includes two I/O-intensive SBC slots, while the nine payload slots can support RF payload, general purpose GPU and compute intensive SBCs. Maintenance ports, AUX CLK, REF CLK and GPIO signals are routed to headers allowing for outside connection. The backplane also routes IPMB A and B interfaces to support connection to an external VITA 46.11 chassis manager. The backplane is included in the SOSA 1.0 Reference Guide for Integrators (RIG) as a reference 3U backplane example for larger systems.
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