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US 8,015,425 B1Granted
Power reduction techniques for components in integrated circuits
AssigneeAltera Corporation
InventorsAaron Charles Egier, David Neto
Life of this patent
Estimating the term…
Abstract
Optimizing the power used in an integrated circuit. A circuit-level transformation/permutation reduces the power consumed by multipliers or other components in integrated circuits. Signals that toggle frequently are assigned to lower power multiplier ports or the number of times a signal changes value is minimized. Large width signals are assigned to the low power port. Large multipliers are divided up and optimized as above. Pipelined multipliers are used with registers so that signals change together.
Claims13
A method comprising:
- identifying, at a circuit component having a port, an input for said port that changes multiple times during a single clock cycle;
- placing a register before said port so that the output of the register becomes the input to the port and the input to the port changes only once per clock cycle, wherein a toggle rate of said input is reduced and power is reduced in said circuit component.
A method comprising:
- identifying, at a multiplier having a plurality of ports or a single port with multiple signals, inputs for the port or ports that change at different times during each clock cycle;
- placing registers before said port or ports so that outputs of the registers become the inputs to the port or ports of the multiplier, such that the inputs to the port or ports of the multiplier change at the same time during each clock cycle, wherein said inputs are synchronized such that glitches inside said multiplier are reduced causing power consumed by the multiplier to be reduced.
A method comprising:
- identifying a component of an electronic design, the component having input ports for receiving input signals;
- identifying a power consumption rating for each of the input ports;
- updating the electronic design by assigning input signals to the input ports based on the power consumption ratings;
- and
- implementing the updated electronic design on the electronic device.
2 more elements
Dependencies are inferred from the claim text.