Patent ID: 6404227
Filing Date: 2002-06-11
Classification: G06F

Abstract:
An interleaved signal carry structure, comprising:a first signal line and a second signal line forming a first bus; a third signal line and a forth signal line forming a second bus; a first set of carry function generators positioned between said first signal line and said third signal line, said first set of carry function generators receiving inputs from said first signal line and said third signal line; a set of carry-in signal lines attached to a first end of each generator of said first set of carry function generators; a second set of carry function generators positioned between said second signal line and said fourth signal line, said second set of carry function generators receiving inputs from said second signal line and said fourth signal line; a set of intermediate carry signal lines positioned between a second end of each generator of said first set of carry function generators and a first end of each generator of said second set of carry function generators; a set of carry out signal lines attached to a second end of each generator of said second set of carry function generators; a first vertical carry chain comprising a first carry function generator from said first set of carry function generators and a first carry function generator from said second set of carry function generators; and a second vertical carry chain comprising a second carry function generator from said first set of carry function generators and a second carry function generator from said second set of carry function generators.