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
•
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)
•
PMC slot 1 with rear I/O
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
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 Specifications
Dual power input from VMEbus, uninterrupted (EN50155, Class S1)
•
+5V (-3%/+5%)
•
+3.3V (-5%/+5%) optional
•
Standard backplane supplies both input rails with power
•
Continued operation if one power input fails (or is not present)
•
Separate power supplies for the three CPUs and the three main memory ranks
Supply voltage/power consumption:
•
33W (39W when 3.3V are not supplied)
•
6 W (optional +3.3V supply)
Mechanical Specifications
Dimensions: standard double Eurocard, 233.3mm x 160mm
Weight (without mezzanines and accessories): 548g
Environmental Specifications
Temperature range (operation):
•
1-slot models: -40..+50°C (qualified components), temperature classes T1, T2, and TX inside buildings, or in containers with temperature control for signalling equipment, according to EN 50125-3, table 2
•
2-slot models: -40..+70°C (qualified components), temperature classes T1, T2, and T3 for equipment onboard rolling stock, according to EN 50125-1, table 2
•
Airflow: min. 2 m/s
Temperature range (storage): -40..+85°C
Relative humidity (operation): max. 95% non-condensing
Relative humidity (storage): max. 95% non-condensing
Altitude: -300m to +2,000m (EN50124, Class AX)
Compliant to EN50125-1, meeting requirements of EN61373, Cat. 1, Class B and Classes GTX, GL3 for rolling stock
•
Shock: 50 m/s², 30 ms (EN 61373)
•
Vibration (function): 1 m/s², 5 Hz - 150 Hz (EN 61373)
•
Vibration (lifetime): 7.9 m/s², 5 Hz - 150 Hz (EN 61373)
For signalling equipment, a distance of 3m from the track bed is required
Protection class IP00 (EN50124, Category PD1)
Conformal coating on request
All components soldered
MTBF
270 311 h @ 40°C according to IEC/TR 62380 (RDF 2000)
424 061 h for continuous operation @ 25°C according to IEC/TR 62380 (RDF 2000)
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 Conformity
EN55011 (radiated emission disturbances - rolling stock)
EN 61000-6-4 (radiated emission disturbances - signalling equipment)
EN 61000-4-3 (electromagnetic field immunity)
EN61000-4-2 (electrostatic discharge immunity)
EN61000-4-8 (power - frequency magnetic field)
EN61000-4-9 (pulsed magnetic field)
BIOS
MENMON™
Software Support
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