Fault Tolerant LEON 3FT Processing Fault Tolerant LEON 3FT Processing Device and Circuit Boards Sam Stratton Aeroflex Colorado Springs MAPLD 2009

9/3/2009MAPLD  The first board product developed with the UT699 was the LEON Controller Board (LCB) for a NASA experiment  Subsequent developments are currently in process or under investigation  This presentation will describe the UT699 LEON 3FT base products past, present and future –LEON 3FT Microprocessor –LEON 3FT Controller Board (LCB) –LEON 3FT Single Board Computer (SBC) –Companion Telemetry I/O Card Abstract

9/3/2009MAPLD  SPARC V8 Architecture –IEEE-754 FPU –cPCI 2.2 Compliant –2.5V Core, 3.3V I/O –QML Q & V LEON 3FT Microprocessor –SDRAM support –4 SpaceWire Ports –CAN-2.0 Bus

9/3/2009MAPLD  Part of the Materials International Space Station Experiment (MISSE) Program –Characterize Experimental Materials in a Space Environment –Six experiments have been deployed to date LEON 3FT Controller Board (LCB) NASA Image ISSO13E63407: Image of MISSE-3 following deployment on the outside of ISS on August 3, 2006 –Includes the capability to remotely command and monitor experiments  Proposed by NASA in 2008 delivered in Feb of 2009 –Scheduled to launch in November of 2009  MISSE-7: First to support active payloads

9/3/2009MAPLD  The LCB will Monitor and Control 4 Experimental DSP Boards –Provide 2A/5V to each DSP Board –Clocking to each experiment –4 Channels each of A to D Conversion –8 Watchdog signal inputs (2 per DSP Board) –RS-485 for Ground Communication Initial Concept

9/3/2009MAPLD  The LEON 3FT interfaces to the 4 DSP boards through registers in the FPGA LCB Architecture Controls most of the functionality

9/3/2009MAPLD  Designed to be a system controller board –Typically in the cPCI System Slot though supports peripheral slot as well  1553 BCRT function with dedicated memory for 1553 transactions –Accessed by the LEON 3FT through the memory mapped I/O space  4 SpaceWire ports implemented  66Mhz operation  3U Form Factor  Two RS-485 UARTS –One on the LEON 3FT –One on the support FPGA  4 LVDS UARTS LEON 3FT Single Board Computer

9/3/2009MAPLD LEON 3FT SBC Architecture Development Flight

9/3/2009MAPLD  cPCI 2.2 Compliant –Typically will reside in a peripheral slot  4 Port SpaceWire Router –200Mbs each port  1553 –Same as for the SBC  32 Channels of A to D Future - Companion Telemetry I/O Card

9/3/2009MAPLD Telemetry Card Architecture Development Flight

9/3/2009MAPLD  UT699 LEON 3FT –Available QML Q and V  LEON 3FT SBC –Development board available Dec 2009 –Flight board 6 to 8 months later  Companion Telemetry I/O Card –Development board by 2Q10 –Flight 6 to 8 months later Status