GR716B

The GR716B is based on a LEON3FT processor and two real-time accelerators (RTA). It embeds 192 KiB of on-chip RAM memory and it also provides fault tolerant memory controllers to provide access to off-chip memories.

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The list of I/O interfaces includes SpaceWire router, Ethernet, MIL-STD-1553B, CAN, programmable PWM interface, SPI with SPI-for-Space protocols, UART, I2C, GPIO.

The analog functions include radiation hardened cores such as DAC and ADC, analog comparators, precision voltage reference,  PLL and all active parts for a crystal oscillator (XO).

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From a system perspective, the GR716B offers on-chip voltage regulators for single supply support and the capability to sense core voltage for trimming of the embedded voltage regulator for low power applications. The LEON3 features single-cycle instructions execution and data fetch from the tightly coupled memories. Execution determinism is guaranteed by the deterministic instruction execution time and fixed interrupt latency.

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‍SpaceWire Router
The GR716B implements a SpaceWire router with two external ports, one internal port and time distribution support. The I/O interfaces are LVDS with extended common-mode, Cold-Spare and Fail-Safe support.

‍Real Time Accelerators
The GR716B includes two real-time accelerators (RTA), whose function is off-loading the main LEON3 processor of demanding real-time control tasks. Each RTA module is an independent isolated LEON3FT subsystem and can execute software in parallel with the main LEON3FT processor. The RTA subsystem can access a tightly coupled memory protected by EDAC to ensure single cycle instruction execution.  It also has access to

• Separate timer possible to synchronize with the main system timer
• Local interrupt controller with start/stop/reset control
• RTA Task Manager (RTA) and interrupt time  stamp functionality

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• System frequency up-to 100 MHz
• SpaceWire links up-to 100 Mbps
• Package options:
  
  • CQFP132 hermetically sealed ceramic
  • PBGA-400 plastic  
  • PBGA-400 plastic with 4 MiB embedded RAM
• TID: up to 100 krad (Si)
• SEL immunity:  118 MeV*cm²/mg
• Support for single 3.3V supply

We offer several evaluation boards for the GR716B

• GR716B-MIDI
• ‍GR716-BOARD
• GR-CPCI-GR716-DEV
• GR-CPCIS-XCKU

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We provide compiler toolchains and BSPs with GR716B specific support.

BCC2

Zephyr

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TSIM-GR716 is a cycle-accurate simulator, proving a high precision model for the GR716B with bus timing modeled on a per instruction level. The simulator also provides support for I/O and external memory emulation.

GRMON is a debug tool, optimized for the GR716B and providing a non-intrusive debug environment. It provides execution control with support for the main LEON3FT and the Real Time Accelerators (RTAs).

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