Method for designing LSI system
AssigneeMatsushita Electric Industrial Co., Ltd.
InventorsMiwaka Takahashi, Hiroshi Mizuno, Toshiyuki Moriwaki, Hiroki Shinde
Life of this patent
Estimating the term…
Abstract
A design technique considering a peak current is provided for high-level design of systems including LSIs. A hardware model representing the trade-off relationship between a leak current and performance is prepared in advance for functional units constituting the system. In the hardware model, the relationship between performance tpd and a source-drain leak current Pleak is described with a threshold voltage Vth as a parameter, for example. By referring to the trade-off relationship, design conditions for the functional units are determined under evaluation of the performance and power consumption of the entire system.
Claims7
A method for designing a system including an LSI at a system design level, the method comprising the step of:
- determining design conditions for respective functional units constituting the system under evaluation of performance and power consumption of the entire system,
- wherein the step of determining design conditions comprises the steps of:
- preparing in advance a hardware model representing the trade-off relationship between a leak current and performance for at least one of the functional units;
- and
- determining design conditions for the functional units by referring to the trade-off relationship represented by the hardware model.
An apparatus for designing a system including an LSI at a system design level, the apparatus comprising:
- means for determining design conditions for respective functional units constituting the system under evaluation of performance and power consumption of the entire system,
- wherein the means for determining design conditions uses a hardware model representing the trade-off relationship between a leak current and performance, prepared in advance for at least one of the functional units, and
- determines the design conditions for the functional units by referring to the trade-off relationship represented by the hardware model.
A recording medium with a program for designing a system including an LSI at a system design level recorded thereon, the program comprising the step of:
- determining design conditions for respective functional units constituting the system under evaluation of performance and power consumption of the entire system,
- wherein the step of determining design conditions uses a hardware model representing the trade-off relationship between a leak current and performance, prepared in advance for at least one of the functional units, and
- determines the design conditions for the functional units by referring to the trade-off relationship represented by the hardware model.
Dependencies are inferred from the claim text.