Power Optimization (EDA)
Power optimization is the use of electronic design automation tools to optimize (reduce) the power consumption of a digital design, such as that of an integrated circuit, while preserving the functionality. Introduction and history The increasing speed and complexity of today’s designs implies a significant increase in the power consumption of very-large-scale integration (VLSI) chips. To meet this challenge, researchers have developed many different design techniques to reduce power. The complexity of today’s ICs, with over 100 million transistors, clocked at over 1 GHz, means manual power optimization would be hopelessly slow and all too likely to contain errors. Computer-aided design (CAD) tools and methodologies are mandatory. One of the key features that led to the success of complementary metal-oxide semiconductor, or CMOS, technology was its intrinsic low-power consumption. This meant that circuit designers and electronic design automation (EDA) tools could affo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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Clock Gating
In computer architecture, clock gating is a popular power management technique used in many synchronous circuits for reducing dynamic power dissipation (a significant source of power dissipation in digital designs), by removing the clock signal when the circuit, or a subpart of it, is idle. Clock gating Energy conservation, saves power by pruning part of the Clock_signal#Distribution, clock tree distribution, at the cost of adding more logic to a circuit. Pruning the clock turns off portions of the circuitry so that the Flip-flop (electronics), flip-flops in them do not switch state, as switching the state consumes power. When not switched, the switching power consumption is reduced. This technique is particularly effective in systems with significant idle time or predictable periods of inactivity within specific module Essential details Digital circuits consume power through multiple mechanisms, typically categorised into dynamic and static components. The equation can describ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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Digital Electronics
Digital electronics is a field of electronics involving the study of digital signals and the engineering of devices that use or produce them. It deals with the relationship between Binary number, binary inputs and outputs by passing electrical signals through Logic gate, logical gates, Resistor, resistors, Capacitor, capacitors, Amplifier, amplifiers, and other Electronic component, electrical components. The field of digital electronics is in contrast to analog electronics which work primarily with analog signals (signals with varying degrees of intensity as opposed to on/off two state binary signals). Despite the name, digital electronics designs include important analog design considerations. Large assemblies of logic gates, used to represent more complex ideas, are often packaged into integrated circuits. Complex devices may have simple electronic representations of Boolean logic#Digital electronic circuit design, Boolean logic functions. History The binary number system was ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Power Standards
Power may refer to: Common meanings * Power (physics), meaning "rate of doing work" ** Engine power, the power put out by an engine ** Electric power, a type of energy * Power (social and political), the ability to influence people or events Mathematics, science and technology Computing * IBM POWER (software), an IBM operating system enhancement package * IBM POWER architecture, a RISC instruction set architecture * Power ISA, a RISC instruction set architecture derived from PowerPC * IBM Power microprocessors, made by IBM, which implement those RISC architectures * Power.org, a predecessor to the OpenPOWER Foundation Mathematics * Exponentiation, "''x'' to the power of ''y''" * Power function * Power of a point * Statistical power Physics * Magnification, the factor by which an optical system enlarges an image * Optical power, the degree to which a lens converges or diverges light Social sciences and politics * Economic power, encompassing several concepts that economists ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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Data Organization For Low Power
Power consumption in relation to physical size of electronic hardware has increased as the components have become smaller and more densely packed. Coupled with high operating frequencies, this has led to unacceptable levels of power dissipation. Memory accounts for a high proportion of the power consumed, and this contribution may be reduced by optimizing data organizationthe way data is stored. Motivation Power optimization in high memory density electronic systems has become one of the major challenges for devices such as mobile phones, embedded systems, and wireless devices. As the number of cores on a single chip is growing the power consumption by the devices also increases. Studies on power consumption distribution in smartphones and data-centers have shown that the memory subsystem consumes around 40% of the total power. In server systems, the study reveals that the memory consumes around 1.5 times the core power consumption. Memory data organization of low energy address ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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Common Power Format
The Si2 Common Power Format, or CPF is a file format for specifying power-saving techniques early in the design process. In the design of integrated circuits, saving power is a primary goal, and designers are forced to use sophisticated techniques such as clock gating, multi-voltage logic, and turning off the power entirely to inactive blocks. These techniques require a consistent implementation in the design steps of logic design, implementation, and verification. For example, if multiple different power supplies are used, then logic synthesis must insert level shifters, place and route must deal with them correctly, and other tools such as static timing analysis and formal verification must understand these components. As power became an increasingly pressing concern, each tool independently added the features needed. Although this made it possible to build low power flows, it was difficult and error prone since the same information needed to be specified several times, in seve ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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Unified Power Format
Unified Power Format (UPF) is the popular name of the Institute of Electrical and Electronics Engineers (IEEE) standard for specifying power intent in power optimization of electronic design automation. The IEEE 1801-2009 release of the standard was based on a donation from the Accellera organization. The current release is IEEE 1801-2024. History A Unified Power Format technical committee was formed by the Accellera organization, chaired by Stephen Bailey of Mentor Graphics. As a reaction to the Power Forward Initiative the group was proposed in July 2006 and met on September 13, 2006. It submitted its first draft in January 2007, and a version 1.0 was approved to be published on February 26, 2007. Joe Daniels was technical editor. Files written to this standard annotate an electric design with the power and power control intent of that design. Elements of that annotation include: * Power Supplies: supply nets, supply sets, power states * Power Control: power switches * Additio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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Design Automation Standards Committee
The Design Automation Standards Committee (DASC) is a subgroup of interested individuals members of the Institute of Electrical and Electronics Engineers (IEEE) Computer Society and Standards Association. It oversees IEEE Standards that are related to computer-aided design (known as design automation). It is part of the IEEE Computer Society. This group sponsors and develops standards under the policies of the IEEE. The group started in the summer of 1984 at the Design Automation Conference. Initially, the group supported VHDL as a standard, but extended its coverage to Verilog, and then additional areas in the design automation space. After going through a period of very few meetings in 2004–06 which ended with some contention about Power standards (see Common Power Format and Unified Power Format), the group developed new and explicipolicies and procedures With these procedures approved in 2007, the group began meeting monthly via teleconference. Active meetings include EDA c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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IEEE
The Institute of Electrical and Electronics Engineers (IEEE) is an American 501(c)(3) organization, 501(c)(3) public charity professional organization for electrical engineering, electronics engineering, and other related disciplines. The IEEE has a corporate office in New York City and an operations center in Piscataway, New Jersey. The IEEE was formed in 1963 as an amalgamation of the American Institute of Electrical Engineers and the Institute of Radio Engineers. History The IEEE traces its founding to 1884 and the American Institute of Electrical Engineers. In 1912, the rival Institute of Radio Engineers was formed. Although the AIEE was initially larger, the IRE attracted more students and was larger by the mid-1950s. The AIEE and IRE merged in 1963. The IEEE is headquartered in New York City, but most business is done at the IEEE Operations Center in Piscataway, New Jersey, opened in 1975. The Australian Section of the IEEE existed between 1972 and 1985, after which it s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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Retiming
Retiming is the technique of moving the structural location of latches or registers in a digital circuit to improve its performance, area, and/or power characteristics in such a way that preserves its functional behavior at its outputs. Retiming was first described by Charles E. Leiserson and James B. Saxe in 1983. The technique uses a directed graph where the vertices represent asynchronous combinational blocks and the directed edges represent a series of registers or latches (the number of registers or latches can be zero). Each vertex has a value corresponding to the delay through the combinational circuit it represents. After doing this, one can attempt to optimize the circuit by pushing registers from output to input and vice versa - much like bubble pushing. Two operations can be used - deleting a register from each input of a vertex while adding a register to all outputs, and conversely adding a register to each input of vertex and deleting a register from all outputs. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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Logic Synthesis
In computer engineering, logic synthesis is a process by which an abstract specification of desired circuit behavior, typically at register transfer level (RTL), is turned into a design implementation in terms of logic gates, typically by a computer program called a ''synthesis tool''. Common examples of this process include synthesis of designs specified in hardware description languages, including VHDL and Verilog. Some synthesis tools generate bitstreams for programmable logic devices such as PALs or FPGAs, while others target the creation of ASICs. Logic synthesis is one step in circuit design in the electronic design automation, the others are place and route and verification and validation. History The roots of logic synthesis can be traced to the treatment of logic by George Boole (1815 to 1864), in what is now termed Boolean algebra. In 1938, Claude Shannon showed that the two-valued Boolean algebra can describe the operation of switching circuits. In the early d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |