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MEN Mikro

MEN Mikro A602

Triple-Redundant 6U VME64 PowerPC® SBC

3x redundant PowerPC® 750 CPU, up to 900 MHz, 3x redundant 512 MB DDR RAM

 
MEN Mikro A602 triple redundant PPC
 
  • Intel® Core™ 2 Duo L7400
  • Triple redundancy on a single board
  • 1-slot 64-bit VMEbus master
  • 3x redundant PowerPC® 750 CPU, 900 MHz
  • 3x redundant 512 MB DDR RAM
  • 2x redundant 256 MB Flash, ECC
  • 1x 1 MB FRAM, ECC
  • Redundant local PSUs
  • 1x standard PMC slot
  • 1x PMC slot for AFDX® PMC (rear I/O only)
  • 1x RS232 via front and rear I/O
  • PMC I/O, board management via rear I/O
  • Compliant with DO-254 up to DAL A
  • -40 to +50°C with qualified components



Datasheet/Manual:

MEN A602 datasheet in PDF format MEN Mikro A602 Datasheet - PDF
Manual available on request Manual available on request

 

Introduction

The A602 is a 6U 64-bit VMEbus SBC with advanced safety features that realize the functionality of three redundant systems on a single board. Its complex FPGA-based design helps dramatically lower software development costs as it automatically manages the system's triple-redundant processors and memory. The result: The system's redundant architecture is fully taken advantage of by software designed for a standard single-CPU board.

The A602 is designed for deterministic operation and offers extensive BITE features (e.g., ECC error counters for all types of memory, monitoring of all internal voltages), internal buses with error correction and fault-tolerant (fail-operational) implementation. Its three processors run in lockstep mode with 2-out-of-3 voting implemented in FPGA and software-assisted resynchronization, while its triple redundant dynamic memory automatically corrects upsets caused by cosmic radiation (SEU) and hardware faults. The system is powered by redundant local power supplies with separate power supplies for the three CPUs and the three main memory ranks. All I/O is realized in FPGAs (SEU-resistant, developed according to DO-254) and available on the system's rear connectors. Additionally, the A602 offers an RS232 interface at the front panel and two PMC slots: One universal PMC slot with front and rear I/O and a customized slot for an AFDX® PMC with rear I/O only. A second A602 can be connected to build a high reliability cluster. The two A602s exchange data via a sextuple UART connection and a BMCX link.

 
 

Specification

CPU:

3x PowerPC® 750 GL

  • Scalable performance
  • Up to 900MHz processor core frequency
  • Superscalar
  • Classic PowerPC® FPU, MMU
  • CPU bus to FPGA: 100-MHz/64-bit

Lock-step operation

  • All CPUs do the same thing at the same time
  • 2-out-of-3 voting in FPGA with CPU bus clock speed (100MHz)
  • Software-assisted resynchronization
  • No functional interruption in case of an SEU inside the CPU

Chipset

  • North- and Southbridge realized in FPGA

Memory:

2x 32 kB L1 cache, 1MB L2 cache integrated in each CPU
3 independent ranks of 512MB DDR SDRAM system memory, FPGA-controlled

  • 100MHz memory bus frequency (32 bit)
  • Up to 800 MB/s
  • 2-out-of-3 voting in FPGA
  • Scrubbing to prevent accumulation of SEU
  • No functional interruption in case of an SEU inside the memory

2 independent ranks of 256MB Flash, FPGA-controlled

  • Primary and backup Flash ranks contain the same data, auto-selection by boot loader
  • ECC protection

1MB FRAM, ECC protection
4KB serial EEPROM for production data (serial number etc.)

I/O:

All I/O realized in FPGA and available at rear I/O
Sextuple UART

  • E.g., for communication with other A602
  • o Data rates up to 460,800 Baud for each channel
  • Handshake lines: none

RS232 UART

  • Also available at front panel
  • Data rates up to 460,800 Baud
  • 2x 256 Byte transmit/receive buffer
  • Handshake lines: none

I²C bus

Mezzanine Slots:

Two PMC slots

  • 32 bit/33 MHz, 3.3V V(I/O)
  • PMC1 with front and rear I/O
  • PMC2 customized for AFDX® PMC with rear I/O only

Miscellaneous:

Voltage monitoring
Temperature monitoring
Watchdog
Reset signal control
Control of redundant power supplies
Sleep mode

  • Lowers power consumption in case of primary power supply interruption
  • Power failure indicated through signals from backplane
  • Supports power interruptions specified in Airbus directive ABD0100.1.9
  • CPUs and memory can be put into sleep mode

Redundant clock generation
Connection with second A602 possible (with special backplane)

  • Control of shared outputs
  • Exchange of state information
  • BMC and 6x UART link

Local PCI Bus:

32-bit/33-MHz, 3.3V V(I/O)
Compliant with PCI Specification 2.2

VMEbus:

Tundra TSI148 controller
Compliant with VME64, VME64 and 2eSST specification
Slot-1 function with auto-detection
Master

  • D08(EO):D16:D32:D64:A16:A24:A32:ADO:BLT:RMW

1MB shared fast SRAM
Mailbox functionality
Single level 3 fair requester
Single level 3 arbiter
Bus timer
Location Monitor
Performance

  • Coupled read/write D32 non-block transfer rate 6.5 MB/s

Electrical:

Supply voltage/power consumption:

  • +5V (-3%/+5%), tbd.
  • +3.3V (-5%/+5%) optional, tbd.

Mechanical:

Dimensions: standard double Eurocard, 233.3mm x 160mm
Weight (without mezzanines and accessories): tbd.

Environmental:

Temperature range (operation): -40°C to +50°C (qualified components)
Temperature range (storage): -40°C to +85°C
Relative humidity (operation): max. 95% non-condensing
Relative humidity (storage): max. 95% non-condensing
Altitude: -300m to +20,000m
Shock: 15g/11ms
Bump: 10g/16ms
Vibration (sinusoidal): 1g/10..150Hz
Conformal coating on request
All components soldered

MTBF:

tbd. @ 40°C according to MIL.HDBK-217FN2 with modifications.

Safety:

Erroneous behavior of CPU/memory subsystem < 1E-8 / h

  • Considering hardware failures and worst-case SEU environment

PCB manufactured with a flammability rating of 94V-0 by UL recognized manufacturers

EMC:

Conforming to EN 55022 (radio disturbance), EN 55024 / EN 61000-4-2 (electrostatic discharge immunity) and EN 55024 / EN 61000-4-3 (electromagnetic field immunity)

BIOS:

MENMON™

Software Support:

VxWorks®, VxWorks®/Cert
PikeOS

ROHS Status:

This product is lead free/ROHS compliant.


Ordering Details:

Board:

01A602-00 Single-slot 6U VMEbus SBC, triple PowerPC IBM 750GL 800 MHz, 3x512 MB DDR DRAM, Flash, 1 MB FRAM, 2 PMC slots, -40..+50°C with forced air cooling (1 m/s)

Please refer to datasheet for further information.

Accessories:

08AE33-00 x602 debug adapter to connect debug terminal (D602 >R02), JTAG equipment and Freescale CodeTest Probe, -40..+85°C with qualified components

08CT15-00 Rear I/O adapter for A602 with RS232, PMC RIO, DEX-UART, BMC, MISC, -40..+85°C with qualified components

Further Information:

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