Reconfigurable interrupt device and method

Details Reconfigurable interrupt device and method Reconfigurable interrupt device and method

1995-01-26

1996-05-21

Callahan, Timothy P.

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Current driver

327185, 326 56, H03K 190175, H03K 1920

Patent

active

055193455

ABSTRACT:
Reconfigurable interrupt circuitry may provide differing interrupt output signals to various interrupt receiving devices which are adapted to be driven by interrupt circuits having differing drive characteristics. Control signals representative of the device characteristics of the interrupt receiving device are applied to the reconfigurable interrupt circuitry and output characteristics of the reconfigurable interrupt circuitry are selected according to the control signals. In this manner the reconfigurable interrupt circuitry may by adapted to drive interrupt receiving devices which are compatible with active high interrupt output, active low interrupt output, open drain interrupt output, totem pole interrupt output, tristate interrupt output and non tristate interrupt output. The selected configuration of the reconfigurable interrupt circuitry is determined by writing to registers which may be placed within the memory space of external devices so that the external devices may configure the interrupt according to their own characteristics.

REFERENCES:
patent: 4490631 (1984-12-01), Kung
patent: 4808938 (1989-02-01), Levinson
patent: 5107230 (1992-04-01), King
patent: 5162672 (1992-11-01), McMahan et al.
patent: 5179704 (1993-01-01), Jibbe et al.
patent: 5201051 (1993-04-01), Koide
patent: 5291080 (1994-03-01), Amagasaki
patent: 5361005 (1994-11-01), Slattery et al.

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