Programmable function unit as parallel multiplier cell

Details Programmable function unit as parallel multiplier cell Programmable function unit as parallel multiplier cell

1995-07-27

1996-10-29

Westin, Edward P.

Electronic digital logic circuitry

Multifunctional or programmable

Array

326 44, 326 38, H03K 19173, H03K 19094

Patent

active

055700390

ABSTRACT:
A field programmable gate array (FPGA) includes at least one programmable function unit (PFU) which comprises input lines, output lines, and a look-up table (LUT) for generating various functions in response to a configuration bit stream. A first function is an adder/subtracter in which the first input line provides an add/subtract control signal to a multiplexer coupled to a full-adder. The multiplexer determines whether a data bit or its complement is coupled to the full-adder. A second function is an AND gate coupled to the full-adder in which the first input line provides a data bit to the AND gate. The second function provides a basic cell for a parallel multiplier. Furthermore, the first input line may be used as a control line or a data line for a general logic function, depending on the PFU function.

REFERENCES:
patent: Re34363 (1993-08-01), Freeman
patent: 4870302 (1989-09-01), Freeman
patent: 5060183 (1991-10-01), Sakashita et al.
patent: 5384497 (1995-01-01), Britton et al.
patent: 5386156 (1995-01-01), Britton et al.
patent: 5448186 (1995-09-01), Kawata
Hamacher et al, Computer Organization, published by McGraw-Hill, 1978, pp. 194-195.

Affiliated with

Also associated with

Rating

Programmable function unit as parallel multiplier cell does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Programmable function unit as parallel multiplier cell, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Programmable function unit as parallel multiplier cell will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1788427