Functional Description - HP 30020B Installation And Service Manual

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This section contains functional and system-level descrip-
tions of the HP 300208 Intelligent Network Processor (INP).
The functional description lists the major functional areas
and briefly describes each of them. An example of a typical
functional-level operation follows, which serves to summarize the
functional description. Then, an overview of the system-level
operation briefly discusses INP operations in relation to the
HP 3000 HP-IB Version Computer System. In this manual, the HP
3000 HP-IB Version Computer, System refers to the HP 3000 Series
30,33,40,44 and 64 Computer Systems.
3-1. FUNCTIONAL DESCRIPTION
The HP 300208 Intelligent Network Processor includes the
following major functional areas:
• !NP Microprocessor
• Read-Only Memory (ROM)
• Random Access Memory (RAM)
• Direct Memory Access (OMA)
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SDLC and BISYNC Datacomm
• Communication Line Interfaces
• Auto Call Unit Interface
A block diagram of INP organization of the major functional areas
is shown in figure 3-1. The solid interconnecting lines in the
block diagram represent data paths while the broken lines
indicate service request paths.
3-1