Honeywell Mark III - Manual (Page 48)

HONEYWELL Aerospace Electronic Systems Page 48
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5.1.2 Processor CCA
The processor circuit card assembly contains the MARK III core microprocessor, supporting logic circuits,
and memory devices. Significant features of the A2 CCA are as follows:
•
Pentium Microprocessor
•
Timers
•
Heartbeat monitor contained in Field Programmable Gate Array (FPGA)
•
32 Megabytes DRAM
•
32 Megabytes Flash EPROM
•
128 Kilobytes EEPROM maintenance memory
•
512 Kilobytes battery-backed RAM
•
BITE LED drivers
•
PCMCIA receptacle
•
Portable Data Loader Connector and Data Loader circuitry
•
Local Power Circuitry
•
BITE Circuitry
•
Analog Discrete Inputs
•
PCI BUS-based Connector
5.1.3 Power Supply CCA
The Power Supply circuit card assembly provides the power conversion for the LRU. Significant features of
the A4 CCA are:
•
Off-line conversion from either 115 Vrms, 400 Hertz aircraft power, or +28 Vdc aircraft power.
•
Meets conducted emissions requirements of DO-160D.
•
Capable of working though a 200 milli-second power interrupt.
•
Outputs: 3.3 Vdc, +5 Vdc, -5 Vdc, +15 Vdc, -15 Vdc.
•
Total maximum power capacity: 100 watts (consumption < 40 watts in Mark III configuration).
•
BITE Circuitry.
•
PCI BUS-based Connector.
5.1.4 Input/Output CCA
The significant features of the Input/Output CCA are:
•
Two MPC-860 Power PC Microprocessors
•
Two ARINC 429 16 Channel Transmitter and 32 Channel Receiver ASIC and associated buffer circuitry
to support 12 outputs and 48 inputs
•
DSP implementing ARINC 716 VHF Modem
•
DSP implementing UHF Modem
•
32 Megabytes DRAM
•
16 Megabytes Flash EPROM
•
Four 10-based T Ethernet Controllers and associated circuitry
•
RS-422 Circuitry for 3 bi-directional ports.
•
RS-232 Communication Port
•
MIL-STD-1553B Data Bus Interface (military version only)
•
12-bit A/D converter for internal analog monitors
•
Program pin buffers
•
Failure lamp output discrete buffers
•
Built-In Test Equipment (BITE)