Electronic digital logic circuitry – Multifunctional or programmable – Array
Patent
1995-09-29
1998-10-06
Westin, Edward P.
Electronic digital logic circuitry
Multifunctional or programmable
Array
326 53, H03K 738, H03K 1921
Patent
active
058182551
ABSTRACT:
A carry logic circuit for a programmable logic device which uses a single function generator to create a carry propagate signal (P) and an output signal (S). The function generator includes a plurality of signal generation circuits, each of which is controlled by a first input signal (A) and a second input signal (B). One of the signal generation circuits is programmed to provide a desired carry propagate signal (P) in response to the first and second input signals (A,B). The carry propagate signal (P) is transmitted for use outside of the function generator to perform a carry propagation function for the carry logic circuit. The remaining signal generation circuits are programmed to generate one or more intermediate output signals in response to the first and second input signals (A,B). These intermediate output signals, in combination with carry propagate signal (P), are representative of the desired output signal (S). The function generator also includes a signal selection circuit which is coupled to the signal generation circuits. The signal selection circuit passes a signal which is selected from the group consisting of the carry propagate signal (P) and the intermediate output signals, thereby providing the output signal (S).
REFERENCES:
patent: 5349250 (1994-09-01), New
patent: 5386156 (1995-01-01), Britton et al.
patent: 5436574 (1995-07-01), Veenstra
patent: 5488315 (1996-01-01), Mahant-Shetti et al.
New Bernard J.
Tavana Danesh
Roseen Richard
Westin Edward P.
Xilinx , Inc.
LandOfFree
Method and circuit for using a function generator of a programma does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and circuit for using a function generator of a programma, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and circuit for using a function generator of a programma will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-82372