Key features: Topology: Full Mesh VPX Backplane compliant to the VITA 46.0 core specification Backplane is supporting subsidiary specifications for protocols as: Serial Rapid IO (VITA 46.3), PCI Express (VITA 46.4) and Ethernet (VITA 46.7) High flexibility allowing applications to dictate the necessary fabric mapping High-speed Multi-gig connector in mesh topology Uses the rugged 3U-160 Eurocard Designed to support Rear Transition Modules according to the VITA 46.10 specification System Management interface on the backplane About this backplane: 16-layer stripline design 3U height 6 Slots Slot Pitch: 1,0 (25.4mm) Figure.1 PCB size: 146mm x 128.7mm PCB thickness: 4.0mm PCB material: IS410 September, 2009 ELMA Trenew: Backplanes Department Page 1 of 7
Supports six VPX Slots routed in a full mesh topology, using fat pipes *: 4 links = 8 differential pairs / channel Figure.2 High-speed Multi-Gig RT-2 connectors for up to 6.4 Gbps data rate are used in all six Slots (J0,J1 and J2 connectors) Alignment / Keying modules for all VPX slots. Both backplane keying modules (alignment key 1 & 2) are providing a unique keying for each slot. To provide a maximum flexibility, there are more angular alignment holes provided for each position, as long as the holes are not in adjacent positions (see picture Other possible configurations on the Backplane ) By default assembled: Other possible configurations: Figure.3 September, 2009 ELMA Trenew: Backplanes Department Page 2 of 7
Power studs: M3 type See mounting instructions in Figure. 3 Figure.4 Current capability: o o o +12V 22Amp/slot 132Amp/BP +3.3V 22Amp/slot 132Amp/BP +5V 22Amp/slot 132Amp/BP Additional power connections for external voltages : o -12V_AUX o +3.3V_AUX o +12V_AUX System management connections : each of the 2 IPMB busses are routed to two 5-pin System Management bus extension connectors on the backplane, according to the VITA 38 specification (System Management on VME): SM1 Signal 1 SM0 2 GND 3 SM1 4 +3.3V_AUX 5 SM2 Signal 1 SM2 2 GND 3 SM3 4 +3.3V_AUX 5 September, 2009 ELMA Trenew: Backplanes Department Page 3 of 7
A 3 pin header for VBAT is providing a Battery Back-up. This battery voltage could be provided from an external source or could be tied to the already existent +3.3V_AUX voltage. VBAT Signal 1 +3.3V_AUX 2 VBAT 3 GND Testing or programming using the JTAG implementation is provided on the backplane, by using a 7 pin header (1x7, 2.54mm) J1 Signal 1 TMS 2 TCK 3 GND 4 TDI 5 TDO 6 +3.3V_AUX 7 TRST System Controller (SYS_CON) signal, is optional grounded separately by all 6 slots, in order to provide more flexibility in deciding which module is designated as System Controller. By default slot 1 is configured as System Controller. Rear Transition Module support according to the VITA 46.10 specification (Rear Transition Module on VPX) Figure.5 September, 2009 ELMA Trenew: Backplanes Department Page 4 of 7
Backplane Fabric Interconnection Diagram: Figure.6 General considerations: A channel comprised of four bi-directional links is referred to as a fat pipe A channel comprised of one or two bi-directional links is referred to as a thin pipe September, 2009 ELMA Trenew: Backplanes Department Page 5 of 7
Designed to meet the following VPX (VITA 46) Specifications: ANSI VITA 46.0 (VPX Baseline Standard) approved in October 2007 VITA 46.3 (Serial RapidIO on VPX Fabric Connector) draft phase VITA 46.4 (PCIExpress on VPX Fabric Connector) draft phase VITA 46.7 (Ethernet on VPX Fabric Connector) draft phase VITA 46.10 (Rear Transition Module on VPX) draft phase Additional active VPX (VITA 46) Specifications (not relevant for this Backplane): ANSI VITA 46.1 (VMEbus Signal Mapping on VPX) approved in October 2007 VITA 46.20 (Switch Slot Definition) draft phase Subject to technical change - Copyright ELMA Trenew Electronic GmbH September, 2009 ELMA Trenew: Backplanes Department Page 6 of 7
Benefits of VPX (VITA 46): For many applications, the data transmission rate and vibration resistance of the conventional VME64x technology are no longer adequate. Consequently, solutions based on VITA 46 / VPX are targeted especially at aviation and defence technology applications thanks to their inherent shock and vibration resistance. Due to the constantly increasing demand, ELMA has expanded its product range once again. Several models are available, including a new 3U backplane. A variety of basic systems using three different cooling concepts convection, conduction and liquid cooling cover all significant application areas in this category. Another new product is a test card that enables developers of daughter boards and system integrators to optimise their products without any need for supplementary test equipment. The interactions between the various individual components in the overall system can be tuned in advance in order to ensure reliable operation. The special backplane plug-and-socket connectors, which are compliant with the VITA 46 specification, already support data transmission rates up to 10 Gbps and thus guarantee a long product life cycle. The connectors employ differential wafer technology to ensure reliable contact between the backplane and the daughter cards. This improves the data transmission characteristics and prevents bending of the pins when the cards are exchanged. This technology enables field exchange while at the same time yielding low maintenance costs. Another special feature of VPX is the possibility of using a rear transition module with a form factor as low as 3U. This makes it possible to implement systems, including I/O cards, with space-saving, low-weight constructions. Another new product from ELMA is the SerDes test module, which enables VPX systems to be optimized without any supplementary test equipment. This is because the number of slots across which the transmitter and receiver cards have to communicate with each other can in fact make a difference in terms of propagation delay behaviour. For example, if the preamplification of the daughter boards is not right and there are several hundred setpoints for configuring this the result is transmission errors. The entire system is slowed down by the need for repeat transmission of these erroneous signals. By contrast, the system can be optimised slot by slot with the new test modules. For this purpose, the card to be tested is plugged into its slot in the system, and the test card is plugged into the receiver slot. All of the test criteria are configured and examined directly on the test card, which only has to be connected via a USB port to a computer equipped with an easy-to-use graphic user interface for visualisation and evaluation. Systems that are optimised in this manner guarantee the highest possible performance September, 2009 ELMA Trenew: Backplanes Department Page 7 of 7