Download 8800 series Technical Manual - AT Electronic and Communication

Digital Microwave Radio
8800 series
3.4.2
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Removes and measures the applied amount of FEC and dismantles the incoming data frame
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Unscrambles the data and sends composite frames to the de-multiplexer on the Data Interface
Unit.
Communications Processor
The processor used in the Codan 8800 series is a Motorola 32-bit MPC860 series PowerQUICC™ Integrated
Communications Processor which is a versatile one-chip integrated microprocessor and peripheral combination
that excels particularly in communications and networking products.
The MPC860 integrates two processing blocks. One block is the embedded MPC8xx core and the second block
is a Communication Processor Module (CPM) based on the MC68360 CPM. The CPM supports eight serial
channels—four serial communications controllers, two serial management controllers, one serial peripheral
2
interface, and one I C interface. This dual-processor architecture provides lower power consumption than
traditional architectures because the CPM off-loads peripheral tasks from the embedded MPC8xx core.
The MPC860 is supported by 4 MByte of memory, which is configured as two banks of 2 MByte in each bank.
Only one bank of memory is used to support the terminal at any given time.
The Indoor Unit is dispatched from the factory with the most recent version of firmware loaded into each bank of
memory. Each bank of memory can be configured with different versions of firmware, which allows a firmware
upgrade to be carried out whilst the Indoor Unit continues to function with a previous version of firmware.
3.4.3
Operating System
The operating system chosen for the Codan 8800 series of Digital Microwave Radios is PSOS or Proverbially
Secure Operating System.
This system is extremely robust and efficient in network communications devices.
The software supports “Plug and Play” automatic identification and configuration of Data Interface Units and
Outdoor Unit frequency bands.
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