Cobham Gaisler AB provides IP cores and supporting development tools for embedded processors based on the SPARC architecture. We specialize in digital hardware design for both commercial and aerospace applications

GR-RASTA - LEON2/3/4 spacecraft avionics development platform


GR-RASTA is a development/evaluation platform for LEON2, LEON3 and LEON4 based spacecraft avionics. Processing is provided by the LEON3 processor pre-programmed into either an Actel Axcelerator or a Xilinx Virtex4 FPGA. Interfaces such as SpaceWire, MIL-STD-1553B, CAN 2.0B and CCSDS TM/TC are provided on separate FPGA I/O boards. Communication between the boards is done via the Compact PCI (cPCI) bus. The system is shipped ready to use in a cPCI crate together with cabling, documentation and demonstration software.

cPCI host controller boards

The are three available options for the cPCI host system.

  • LEON3 processor pre-programmed into Xilinx Virtex4 FPGA (GR-CPCI-XC4V)
  • LEON3 processor pre-programmed into Actel Axcelerator FPGA (GR-CPCI-AX2000)

cPCI I/O boards

Different I/O boards are available, as listed hereafter.

Interface specifications and connectors

  • SpaceWire: up to 200 Mbps, LVDS, MDM9-S connectors
  • MIL-STD-1553B: A/B buses with Twinax BJ75 connectors
  • CAN 2.0B: ISO11898, 2 buses with 9-pin D-Sub (male) connectors
  • CCSDS Telemetry and Telecommand: RS422, HD26 connectors
  • PacketWire: RS422, HD15 connectors
  • UART: RS232, 9-pin D-sub (female) connector
  • Ethernet: 10/100 Mbps, RJ45 connector
  • PCI: 33 MHz, 32-bit, 3.3 V cPCI connector

GR-RASTA standard configurations

RASTA configurations

Note: For the GR-RASTA-105 configuration, it is possible to include GRLIB CCSDS/ECSS TM encoder and TC decoder inside the FPGA on the GR-CPCI-XC4V board, adding a GR-TMTC-ADAPTER accessory board with RS422 drivers for transponder communication. Please contact us for details.