Processor Cca; Power Supply Cca; Input/Output Cca - Honeywell Mark III Technical Overview

Communications management unit (cmu)
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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)
HONEYWELL Aerospace Electronic Systems
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