Dialer with internal option select circuit programmed with externally hardwired address
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United States of America
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Dec 14, 1999
Grant Date -
N/A
app pub date -
Jul 30, 1997
filing date -
Oct 31, 1988
priority date (Note) -
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status (Latency Note)
Importance
Abstract
An option select circuit for a dialer includes an internal address generator (20) for generating an address pattern, which, in a set up mode, is output from a multiplexer (14) to I/O pins (10). The pins (10) are selectively hardwired through an interface circuit (24) back to address input pins (50) and (52) for input to a decorder (28). The decoder (28) decodes the selected address for input to a PLA (30). This allows selection of various functions in a function generator (12) for operation in the normal dialer mode. The interface circuit (24) comprises hardwire connections (54) and (56).
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