US 2008/0074147 A1 · WIRING OPTIMIZATIONS FOR POWER

Abstract

An electrical wiring structure and a computer system for designing the electrical wiring structure. The electrical wiring structure includes a wire pair. The wire pair includes a first wire and a second wire. The second wire is slated for being tri-stated. The wire pair has a same-direction switching probability φSD per clock cycle that is no less than a pre-selected minimum same-direction switching probability φSD,MIN or has an opposite-direction switching probability φOD per clock cycle that is no less than a pre-selected minimum opposite-direction switching probability φOD,MIN. The first wire and the second wire satisfies at least one mathematical relationship involving LCOMMON and WSPACING, where WSPACING is defined as a spacing between the first wire and the second wire, and LCOMMON is defined as a common run length of the first wire and the second wire.

Claims24

Dependent claims

An electrical wiring structure, comprising at least one wire pair, said wire pair including a first wire and a second wire, said second wire slated for being tri-stated, said wire pair having a same-direction switching probability φSD per clock cycle that is no less than a pre-selected minimum same-direction switching probability φSD,MIN or having an opposite-direction switching probability φOD per clock cycle that is no less than a pre-selected minimum opposite-direction switching probability φOD,MIN, said first wire and said second wire satisfying at least one mathematical relationship, said at least one mathematical relationship involving LCOMMON and WSPACING, said WSPACING defined as a spacing between the first wire and the second wire, said LCOMMON defined as a common run length of the first wire and the second wire.

A computer system for designing an electrical wiring structure having a plurality of wires, comprising:

a processor;
an input device coupled to the processor;
an output device coupled to the processor;
a first memory device coupled to the processor;
a second memory device coupled to the processor;
a computer code stored in the second memory device and executed by the processor;
said computer code comprising an algorithm, said algorithm identifying at least one wire pair, said wire pair including a first wire of the plurality of wires and a second wire of the plurality of wires, said second wire already tri-stated or configured to be tri-stated, said wire pair having a same-direction switching probability φSD per clock cycle that is no less than a pre-selected minimum same-direction switching probability φSD,MIN or having an opposite-direction switching probability φOD per clock cycle that is no less than a pre-selected minimum opposite-direction switching probability φOD,MIN, said first wire and said second wire satisfying at least one mathematical relationship, said at least one mathematical relationship involving LCOMMON and WSPACING, said WSPACING defined as a spacing between the first wire and the second wire, said LCOMMON defined as a common run length of the first wire and the second wire,

4 more elements

A computer program product, comprising:

a computer usable medium having a computer readable program code embodied therein for designing an electrical wiring structure having a plurality of wires, wherein the computer readable program code includes an algorithm, said algorithm identifying at least one wire pair, said wire pair including a first wire of the plurality of wires and a second wire of the plurality of wires, said second wire already tri-stated or configured to be tri-stated, said wire pair having a same-direction switching probability φSD per clock cycle that is no less than a pre-selected minimum same-direction switching probability φSD,MIN or having an opposite-direction switching probability φOD per clock cycle that is no less than a pre-selected minimum opposite-direction switching probability φOD,MIN, said first wire and said second wire satisfying at least one mathematical relationship, said at least one mathematical relationship involving LCOMMON and WSPACING, said WSPACING defined as a spacing between the first wire and the second wire, said LCOMMON defined as a common run length of the first wire and the second wire.

Dependencies are inferred from the claim text.

Wiring optimizations for power

Life of this patent

Wiring optimizations for power

Life of this patent

Abstract

Claims24