Logic element for a programmable logic integrated circuit

Details Logic element for a programmable logic integrated circuit Logic element for a programmable logic integrated circuit

1998-06-23

2000-08-22

Tokar, Michael

Electronic digital logic circuitry

Multifunctional or programmable

Array

326 41, 326 40, H03K 19177

Patent

active

061078220

ABSTRACT:
A logic element (300) for a programmable logic device. The logic element (300) allows two independent logic functions to be carried out during the same clock cycle. A 4-input look-up table (406) is provided using a 3-input look-up table (434) and two 2-input look-up tables. The results of the 4-input lookup table (406) and the 3-input lookup table (434) may be routed simultaneously from the logic element. It also allows a signal to be routed through a logic element (300) while carrying out an independent logic function. Carry logic (425) is provided. The results of the carry logic (486) may be routed to the global and local interconnect structure of the programmable logic device.

REFERENCES:
patent: 4609986 (1986-09-01), Hartmann et al.
patent: 4617479 (1986-10-01), Hartmann et al.
patent: 4677318 (1987-06-01), Veenstra
patent: 4706216 (1987-11-01), Carter
patent: 4713792 (1987-12-01), Hartmann et al.
patent: 4831591 (1989-05-01), Imazeki et al.
patent: 4871930 (1989-10-01), Wong et al.
patent: 4899067 (1990-02-01), So et al.
patent: 4903223 (1990-02-01), Norman et al.
patent: 4912342 (1990-03-01), Wong et al.
patent: 5099150 (1992-03-01), Steele
patent: 5121006 (1992-06-01), Pedersen
patent: 5128559 (1992-07-01), Steele
patent: 5144582 (1992-09-01), Steele
patent: 5237573 (1993-08-01), Dhuey et al.
patent: 5241224 (1993-08-01), Pedersen et al.
patent: 5260610 (1993-11-01), Pedersen et al.
patent: 5260611 (1993-11-01), Cliff et al.
patent: 5350954 (1994-09-01), Patel
patent: 5371422 (1994-12-01), Patel et al.
patent: 5384500 (1995-01-01), Hawes et al.
patent: 5963050 (1999-10-01), Young et al.
patent: B14617479 (1993-09-01), Hartmann et al.
Altera Corporation, 1996 Data Sheet, Chapter 5, "MAX 7000 Programmable Logic Device Family, " Version 4, pp. 191-219, (Jun. 1996).
Altera Corporation, 1995 Data Sheet, "FLEX 10K Embedded Programmable Logic Family," Version 1. pp. 1-39, (Jul. 1995).
Altera Corporation, 1995 Data Sheet, "MAX 9000 Programmable Logic Device Family," Version 2, pp. 119-152, (Mar. 1995).
Altera Corporation, 1194 Data sheet, "FLEX 8000 Programmable Logic Device Family," Version 4, pp. 1-22, (Aug. 1994).
Altera Corporation, 1993 Data Sheet, "MAX 7000 Programmable Logic Device Family," Version 1, pp. 69-81, (Aug. 1993).
Xilinx Corporation, 1997 Data Sheet, "XC5200 Series Field Programmable Gate Arrays," Version 5.0, pp. 4-163 to 4-234, (Sep. 18, 1997).
Xilinx Corporation, 1995 Technical Data, "XC5200 Logic Cell Array Family," Preliminary Version 2.0, pp. 1-42, (May 1995).
Xilinx Corporation, The Programmable Logic Data Book, "XC 4000, XC4000A, XC4000H, Logic Cell Array Families," pp. 2-7 to 2-46, (1994).
Xilinx Corporation, The Programmable Logic Data Book, "XC3000, XC3000A, XC3000L, XC3100, XC3100A, Logic Cell Array Families," pp. 2-105 to 2-152, (1994).
Lucent Technologies Inc., 1997 Product Brief, "ORCA.RTM. OR2CxxA (5.0 V) and OR2TxxA (3.3 V) Series Field-Programmable Gate Arrays, " 4 pp. (Jun. 1997).
Lucent Technologies Inc., 1996 Advance Product Brief, "Optimized Reconfigurable Cell Array (ORCA.TM.) OR3Cxxx/OR3Txxx Series Field-Programmable Gate Arrays," 6 Pages, (Dec. 1996).

Affiliated with

Also associated with

Rating

Logic element for a programmable logic integrated circuit does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Logic element for a programmable logic integrated circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Logic element for a programmable logic integrated circuit will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-585109