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Generic driver interface card

  • US 5,465,106 A
  • Filed: 03/10/1994
  • Issued: 11/07/1995
  • Est. Priority Date: 09/25/1992
  • Status: Expired due to Term
First Claim
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1. A generic digital logic driver interface card for replacing an older generation digital logic circuit card operating at a high current drive level of older generation electronic equipment in an original card slot of said older generation digital circuit card, said generic digital logic driver interface card providing a configurable digital logic function for duplicating the logic function of said older generation digital circuit card at a low current drive level of present generation digital circuit cards and having configurable I/O drivers for interfacing with older generation I/O connections in the original card slot at the high current drive level of said older generation electronic equipment, said interface card comprising:

  • a programmable gate array operating at the low current drive level of present generation digital circuit cards and having a plurality of I/O signal lines;

    a bidirectional programmable I/O driver having a plurality of I/O signal lines that couple the programmable gate array I/O signal lines to said original card slot, said bidirectional programmable I/O driver providing a selectable directional interface between said programmable gate array and said older generation electronic equipment, said bidirectional programmable I/O driver comprising means for transmitting logical data signals from a low current drive logic element connected to a low current level terminal of said I/O driver to a high current drive logic element connected to a high current level terminal of said I/O driver, and conversely to transmit logical data signals from said high current drive logic element through said high current level terminal to said low current level terminal and said low current drive logic element;

    an EEPROM having a plurality of signal lines that are connected to the programmable gate array to provide data to said programmable gate array for programming said programmable gate array and said bidirectional programmable I/O driver, andpower on reset logic circuitry for programming said programmable gate array and said bidirectional programmable I/O driver upon powering up of said generic digital logic driver interface card.

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