PORT PROCESSORS/MODULES
940043-002 INTEGRATED ENTERPRISE NETWORK 3-3
PORT PROCESSORS
Port processors are self-contained CPU/interface processors incorporating all necessary
circuitry required to communicate with the bus and to support the range of interfaces used
in modern data communications networks. The port processors contain all memory needed
to run the CPU independently. Figure 3-1 illustrates the port interface architecture.
Figure 3-1 Port Interface Architecture
32-bit CPU port processors are used for applications requiring very high throughput or for
support of specialized functions such as Token Ring LAN interfacing. Ports are “soft” and
can operate from either EPROM-based firmware or downloaded software.
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