CPLD with fast logic sharing between function blocks

Details CPLD with fast logic sharing between function blocks CPLD with fast logic sharing between function blocks

2006-10-31

2006-10-31

Tan, Vibol (Department: 2819)

Electronic digital logic circuitry

Multifunctional or programmable

Having details of setting or programming of interconnections...

C326S037000, C326S039000, C326S040000, C326S041000, C326S047000, C716S030000

Reexamination Certificate

active

07129747

ABSTRACT:
Fast logic sharing is created using a feedback path from the output logic macrocell of one functional block to the product term inputs of another function block without going through an advanced interconnect matrix (AIM). The fast feedback path may be provided from the macrocell after the product terms XOR gate without registering, and/or after the register in the macrocell. The fast logic sharing avoids the slow AIM for feedback logic, and allows additional resources to be borrowed from other function blocks with a limited delay penalty. In particular, delay penalties resulting from dividing wide operations requiring multiple product terms between the product terms of multiple functional blocks are significantly reduced.

REFERENCES:
patent: 5450021 (1995-09-01), Chiang
patent: 5821774 (1998-10-01), Veytsman et al.
patent: 5963048 (1999-10-01), Harrison et al.
patent: 5969539 (1999-10-01), Veytsman et al.
patent: 6100714 (2000-08-01), Xiao et al.
patent: 6201408 (2001-03-01), Skahill et al.
patent: 6229337 (2001-05-01), Xiao et al.
patent: 6927601 (2005-08-01), Lin et al.
patent: 2005/0144584 (2005-06-01), Chen et al.
Xilinx, Inc., CoolRunner-II CPLD Family, Preliminary Product Specification, DS090 (v2.1), Jul. 30, 2004, pp. 1-14, available from Xilin, Inc., 2100 Logic Drive, San Jose CA 95124.

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