Introduction

The GR765 is the next-generation radiation-hardened fault-tolerant octa-core system-on-chip, with the bootstrap option to select between LEON5FT SPARC V8 and NOEL-V RV64 RISC-V processor cores. It supports DDR2/3/4 SDRAM and NAND Flash memory with advanced error detection and correction capabilities. The communication interfaces include a SpaceWire router, SpaceFibre, Ethernet, MIL-STD-1553, and CAN-FD interfaces. 

Specification

• Processor target frequency: 1 GHz
• Target technology: STM 28nm FDSOI
• TID immunity: 50 krad (Si) assured by
  technology - device targets higher tolerance
  
• Main memory interface: DDR3 SDRAM fault-tolerant memory controller with dual x8 device correction capability
  
• High Speed Serial Links: SpaceFibre and WizardLink controllers with on-chip SerDes

Features

• Fault-tolerant octa-core architecture
  • LEON5FT SPARC V8 or NOEL-V RV64GCH
  • Dedicated FPU and MMU, 64 KiB per core L1 cache, connected via multi-port interconnect
• 1 GHz processor frequency - 26k DMIPS
• 4+ MiB L2 cache, 512-bit cache line, 4-ways
• DMA controllers
• DDR2/3/4 - TBC
  • 96-bit interface with dual x8 device correction capability
  • 80-bit interface with x8 device correction capability
  • 72-bit interface with error detection capability (parity)
• 8/16-bit PROM/IO interface
• (Q)SPI and NAND memory controller interfaces
• eFPGA 30k LUT
• Hardware authenticated boot (hybrid scheme with ECDSA, ML-DSA)
• Isolated SoC / HSM for HW RoT, Secure Boot, Crypto
• LGA1752/FF1752 package
• Target technology: STM 28nm FDSOI
• ESCC9030 qualification

 Interfaces

• PCIe Gen 3 2 port x4, or 1 port x8 with Root Complex (TBC)
• SpaceFibre 4 ports x1 6.25 Gbit/s + WizardLink support (TBC)
• 12-port SpaceWire router with +4 internal ports
• 4x 10/100/1000 Mbit Ethernet w. TTEthernet capable switch
• 2x MIL-STD-1553B
• 4x CAN FD
• 2x I2C interface, 12 x UART, 2x SPI controller
• SoC Bridge interface
• FPGA Supervisor interface
• Timers & Watchdog, GPIO ports
• Debug links:
  • Dedicated: JTAG and SpaceWire
  • CAN, Ethernet

Applications

The GR765 is targeted at high-performance general-purpose processing with support for mixed-criticality applications. The architecture is suitable for both symmetric and asymmetric multiprocessing and contains design extensions to provide hardware support for isolation between mixed-criticality applications.

Software Support

The GR765 is immediately supported by development tools such as the GRMON software debugger and various compilers and operating systems and a flight-quality boot loader for flight.

Development Board

We can provide FPGA prototypes of the GR765 design for various FPGA platforms.

Documentation