A document describes the CoNNeCT Baseband Processor Module (BPM) based on an updated processor, memory technology, and field-programmable gate arrays (FPGAs). The BPM was developed from a requirement to provide sufficient computing power and memory storage to conduct experiments for a Software Defined Radio (SDR) to be implemented.
The flight SDR uses the AT697 SPARC processor with on-chip data and instruction cache. The non-volatile memory has been increased from a 20-Mbit EEPROM (electrically erasable programmable read only memory) to a 4-Gbit Flash, managed by the RTAX2000 Housekeeper, allowing more programs and FPGA bit-files to be stored. The volatile memory has been increased from a 20-Mbit SRAM (static random access memory) to a 1.25-Gbit SDRAM (synchronous dynamic random access memory), providing additional memory space for more complex operating systems and programs to be executed on the SPARC. All memory is EDAC (error detection and correction) protected, while the SPARC processor implements fault protection via TMR (triple modular redundancy) architecture.
Further capability over prior BPM designs includes the addition of a second FPGA to implement features beyond the resources of a single FPGA. Both FPGAs are implemented with Xilinx Virtex-II and are interconnected by a 96-bit bus to facilitate data exchange. Dedicated 1.25-Gbit SDRAMs are wired to each Xilinx FPGA to accommodate high rate data buffering for SDR applications as well as independent SpaceWire interfaces. The RTAX2000 manages scrub and configuration of each Xilinx.
This work was done by Clifford K. Yamamoto, Thomas C. Jedrey, and Daniel G. Gutrich of Caltech, and Richard L. Goodpasture of Mantech SRS Technologies for NASA’s Jet Propulsion Laboratory. NPO-47773
This Brief includes a Technical Support Package (TSP).
CoNNeCT Baseband Processor Module
(reference NPO-47773) is currently available for download from the TSP library.
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Overview
The document is a Technical Support Package for the CoNNeCT Baseband Processor Module, identified by NASA Tech Brief NPO-47773, developed at NASA's Jet Propulsion Laboratory (JPL) in Pasadena, California. It acknowledges the contributions of researchers from the California Institute of Technology (Caltech) and Mantech SRS Technologies, highlighting the collaborative efforts under the sponsorship of NASA.
The CoNNeCT Baseband Processor Module is part of NASA's Commercial Technology Program, which aims to disseminate aerospace-related developments that have broader technological, scientific, or commercial applications. The document serves as a resource for understanding the capabilities and potential uses of the CoNNeCT technology, which is designed to enhance communication systems in space exploration and other applications.
The Technical Support Package includes documentation referenced in the NASA Tech Brief, providing insights into the module's design, functionality, and applications. It emphasizes the importance of compliance with U.S. export regulations, indicating that the information may contain proprietary data subject to export control.
For those seeking further assistance or information regarding the CoNNeCT Baseband Processor Module, the document provides contact details for the Innovative Technology Assets Management office at JPL. This office can offer additional resources and support related to research and technology in this field.
The document also includes a disclaimer stating that neither the U.S. Government nor any representatives assume liability for the use of the information contained within, nor do they guarantee that such use will be free from privately owned rights. It clarifies that any trade names or manufacturers' names mentioned are for identification purposes only and do not imply official endorsement by NASA.
Overall, the Technical Support Package serves as a comprehensive guide to the CoNNeCT Baseband Processor Module, showcasing its significance in advancing aerospace technology and facilitating communication in space missions. It reflects NASA's commitment to innovation and collaboration in the pursuit of scientific and technological advancements.
