Arithmetic cell for field programmable devices

Details Arithmetic cell for field programmable devices Arithmetic cell for field programmable devices

1996-09-26

1998-09-08

Ngo, Chuong Dinh

Boots, shoes, and leggings

36471607, 364759, G06F 738, G06F 752

Patent

active

058054774

ABSTRACT:
An arithmetic cell to be used in field programmable devices is defined in this invention. This cell will allow efficient implementations of multipliers, multipliers/accumulators and adders (addition, compare, and subtraction) in one compact cell that is a collection of circuits common to field programmable devices. This cell may be used in a flexible manner that allows full multipliers of any dimension (n*m products), adders of any length (n+m sums, compare, differences), accumulators, and registers (to hold complete results or partial products). Key elements in this invention are an application controlled multiplexer, signal routing to provide a shift function for multiplication, and a minimum collection of configuration bits and circuit elements to perform the basic arithmetic functions.

REFERENCES:
patent: 4758985 (1988-07-01), Carter
patent: 5287299 (1994-02-01), Lin
patent: 5396127 (1995-03-01), Chan et al.
patent: 5430390 (1995-07-01), Chan et al.
patent: 5570039 (1996-10-01), Oswald et al.
patent: 5640106 (1997-06-01), Erickson et al.

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