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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)