TIWAY 1 Overview
1-6
TIWAY 1 TI505 NIM User Manual
Figure 2 is a simplified block diagram of the TI505 NIM. The media interface blocks are
intentionally left unlabeled because the type of media interface depends on which NIM
model you are using. The blocks are described as follows.
Special Function Interface Controller (SFIC) — delivers and receives P/C com-
munications.
NIM controller — translates the communication (between Primitives and the
P/C communication language).
Communications controller — supervises data transactions between the
NIM and the network host.
NETWORK INTERFACE MODULE
SPECIAL
FUNCTION
INTERFACE
CONTROLLER
NIM
CONTROLLER
COMM.
CONTROLLER
POWER
MEDIA
CIRCUITRY
TO
NETWORK
COMM.
MEDIA
Figure 2 NIM Simplified Block Diagram
The basic difference in the NIM models is the configuration of the media circuitry.
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