Ensemble 4000 Series VME SBC4120 Module
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Ensemble 4000 Series VME SBC4120 Module Low-Power, Low-Cost Single-Board Computer with Flexible I/O • VME64 6U air-cooled SBC • 1.06 GHz dual-core, low-power MPC8640D processor • Optimized for legacy 5V-only VME systems • Identical software infrastructure across Mercury products • Flexible I/O supported on dual PMC/XMC sites The Ensemble 4000 Series SBC4120 Module from Mercury Computer Systems combines high-performance Power Architecture™ processing technology with balanced I/O from dual PMC/XMC sites, designed for easy insertion into legacy VME systems. This MPC8640D dual-core single-board computer (SBC) requires only 5V power supplied from the backplane, and can operate safely with the lower airflow rates often found in such systems. The SBC4120 provides the features of a single-board computer with a software environment that is identical to the software infrastructure across Mercury products. Support for Legacy Systems Low-Power Processor The Freescale™ MPC8640D dual-core processor integrates two standard e600 processor cores, two DDR2 memory controllers, 1 MB of L2 cache, and a flexible system-on-chip I/O subsystem. The MPC8640D processor is an enhancement to the industrystandard MPC8641D processor and maintains the performance of the MPC8641D while lowering its overall power draw. The dual e600 cores that make up the heart of the chip are inherited from the MPC7448 processor, and each retains the high-performance AltiVec™ vector processing unit. Algorithms optimized for the AltiVec engine port seamlessly to the MPC8640D. Increased bandwidth between both memory and external I/O and the processing cores allows efficient processing beyond that available with prior families of Freescale processors. The SBC4120 balances processing power with flexible I/O via built-in serial and Gigabit Ethernet and dual PMC/XMC mezzanine sites. In addition to the sophisticated management subsystem and fabric interconnect, the SBC4120 provides users with a toolkit enabling many different application use cases. Mezzanine Card Flexibility Each of the standard PMC/XMC sites can be configured with offthe-shelf mezzanine cards using either PCI-X or PCI Express® protocols. PMC cards are supported with a PCI/PCI-X interface at up to 133 MHz on the primary site, and up to 100 MHz on the secondary site. PMC user-defined I/O is mapped to the backplane on one of the two PMC sites. XMCs are supported with x8, x4, x2, and x1 PCIe mezzanine cards per the VITA 42.3 standard. The SBC4120 incorporates several features that simplify insertion into legacy VME systems. Many legacy VME backplanes supply only +5V, +12V, and -12V power inputs for payload modules and any mezzanines mounted on them. The SBC4120 does not require any additional voltages beyond 5V to function. The module is also optimized for high mean-time between failures (MTBF) in lower air-flow environments. The integrated 2eSST VMEbus interface allows fast data movement among 2eSST-enabled modules on the same legacy VME backplane. System Management Block PMC/XMC Site PMC/XMC Site PCI-X/PCIe Bridge PCI-X/PCIe Bridge Figure 1. VME SBC4120 Module functional block diagram

Features include: Processor Node • 128 MB of write-protectable boot/application flash per processor has protected boot vector to avoid accidental erasure. Dual-core MPC8640D Cores per device DDR2 SDRAM • Thermal and voltage sensors are integrated onboard. • System management block is capable of managing firmware updates, reading and writing sensor thresholds, reading sensor values, retrieval of module information and power control, and reset for the module. • RS-232 serial interface ports per processor to the front panel have an additional interface optionally routed to the backplane. •...