High-performance user programmable logic device (PLD)

Details High-performance user programmable logic device (PLD) High-performance user programmable logic device (PLD)

1990-02-28

1991-09-03

Shaw, Dale M.

Boots, shoes, and leggings

307465, 3408253, G06F 738, H03K 19173

Patent

active

050460358

ABSTRACT:
A programmable logic device having greater design flexibility through use of a plurality of programmable macrocells in conjunction with programmable gate arrays. Each macrocell includes a programmable reconfigurable register for receiving sum terms from the array, and an I/O terminal connected to receive an output from the programmable reconfigurable register. Two separate feedbacks from the macrocell to the gate array are provided. The first feedback has multiple inputs including the register output, and the second feedback has multiple inputs including the I/O terminal. Accordingly, the I/O terminal and the register can function independently. Each sum term is capable of serving multiple functions as determined by the programming of the macrocell whereby the input terms can be utilized to implememt two completely independent sum-of-product logic functions, both combinatorial and one combinatorial and one sequential, and whereby each is capable of being programmably routed as feedback to the array or as an output to the I/O terminal.

REFERENCES:
patent: 3803587 (1974-04-01), Mead
patent: 4609986 (1986-09-01), Hartmann et al.
patent: 4742252 (1988-05-01), Agrawal
patent: 4771285 (1988-09-01), Agrawal et al.
patent: 4783606 (1988-11-01), Goetting
patent: 4876640 (1989-10-01), Shankar et al.
patent: 4903223 (1990-02-01), Norman et al.
patent: 4912342 (1990-03-01), Wong et al.
patent: 4933897 (1990-06-01), Shankar et al.
Roth, Jr., Fundamentals of Logic Design, pp. 194-199, 1979, West Publishing Co., St. Paul, Minn.

Affiliated with

Also associated with

Rating

High-performance user programmable logic device (PLD) does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with High-performance user programmable logic device (PLD), we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High-performance user programmable logic device (PLD) will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1014255