I/O module for a serial multiplex data system with a programmabl

Details I/O module for a serial multiplex data system with a programmabl I/O module for a serial multiplex data system with a programmabl

1995-11-30

1999-02-09

Pham, Chi H.

Multiplex communications

Communication techniques for information carried in plural...

Combining or distributing information via frequency channels

327143, 327540, H04J 300

Patent

active

058704019

ABSTRACT:
A programmable data link module is used on a time division multiplex data bus. The module receives data from the data bus during a selected time slot for a selected number of frames. The data link module includes an input circuit for generating a data output signal data to the data bus in response to input signals from an input device coupled to the module. The input circuit includes a programmable input voltage level selector, allowing different voltage rated input devices to be used with the data link module. A hysteresis circuit sets a minimum voltage level threshold representative of the input device being in one logic state and a maximum voltage level threshold representative of the input device being in another logic state.

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patent: 5577172 (1996-11-01), Vatland et al.
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