Honeywell Mark III manual Processor CCA, Power Supply CCA, Input/Output CCA

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)

HONEYWELL Aerospace Electronic Systems Page 48

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