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Wishbone (computer Bus)
The Wishbone Bus is an open source hardware computer bus intended to let the parts of an integrated circuit communicate with each other. The aim is to allow the connection of differing cores to each other inside of a chip. The Wishbone Bus is used by many designs in the OpenCores project. Wishbone is intended as a "logic bus". It does not specify electrical information or the bus topology. Instead, the specification is written in terms of "signals", clock cycles, and high and low levels. This ambiguity is intentional. Wishbone is made to let designers combine several designs written in Verilog, VHDL or some other logic-description language for electronic design automation (EDA). Wishbone provides a standard way for designers to combine these hardware logic designs (called "cores"). Wishbone is defined to have 8, 16, 32, and 64-bit buses. All signals are synchronous to a single clock but some slave responses must be generated combinatorially for maximum performance. Wishbone per ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wishbone Interface
Wishbone commonly refers to: * Furcula, a fork-shaped bone in birds and some dinosaurs Wishbone may also refer to: * Wish-Bone, an American salad dressing and condiment company * Wishbone formation, a type of offense in American football * Wishbone (computer bus), an open source hardware computer bus * Wishbone boom, for control of sail on a windsurfing board * Wishbone, a submission hold and double-team attack in pro wrestling * Double wishbone suspension, an automotive design feature Popular culture * ''Wishbone'' (TV series), an American children's program * ''The Wishbone'', a 1933 British comedy film * Wish Bone (born 1974), American rapper * ''Wish Bone'' (album), by Oh Land * ''Wishbones'', an album by David Knopfler * "Wishbone", a song by Freya Ridings from '' You Mean the World to Me'' * "Wishbone", a song by Dropbox from the album ''Dropbox Dropbox is a file hosting service operated by the American company Dropbox, Inc., headquartered in San Francisco, Cali ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Open-source Software
Open-source software (OSS) is computer software that is released under a license in which the copyright holder grants users the rights to use, study, change, and distribute the software and its source code to anyone and for any purpose. Open-source software may be developed in a collaborative public manner. Open-source software is a prominent example of open collaboration, meaning any capable user is able to participate online in development, making the number of possible contributors indefinite. The ability to examine the code facilitates public trust in the software. Open-source software development can bring in diverse perspectives beyond those of a single company. A 2008 report by the Standish Group stated that adoption of open-source software models has resulted in savings of about $60 billion per year for consumers. Open source code can be used for studying and allows capable end users to adapt software to their personal needs in a similar way user scripts an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Advanced EXtensible Interface
The Advanced eXtensible Interface (AXI), is an on-chip communication bus protocol developed by ARM. It is part of the Advanced Microcontroller Bus Architecture 3 (AXI3) and 4 (AXI4) specifications. AXI has been introduced in 2003 with the AMBA3 specification. In 2010, a new revision of AMBA, AMBA4, defined the AXI4, AXI4-Lite and AXI4-Stream protocol. AXI is royalty-free and its specification is freely available from ARM. AMBA AXI specifies many optional signals, which can be included depending on the specific requirements of the design, making AXI a versatile bus for numerous applications. While the communication over an AXI bus is between a single initiator and a single target, the specification includes detailed description and signals to include N:M interconnects, able to extend the bus to topologies with more initiators and targets. AMBA AXI4, AXI4-Lite and AXI4-Stream have been adopted by Xilinx and many of its partners as main communication buses in their products. Threa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Master/slave (technology)
Master/slave is a model of asymmetric communication or control where one device or process (the "master") controls one or more other devices or processes (the "slaves") and serves as their communication hub. In some systems, a master is selected from a group of eligible devices, with the other devices acting in the role of slaves. The ''master/slave'' terminology was first used in 1904. Since the early 21st century, the terms have become a subject of controversy from their association with slavery and some organizations have opted to replace them with alternative terms. Examples * In electronics, master/slave relationships are used to describe some of the following scenarios: ** In parallel ATA hard drive arrangements, the terms master and slave are used to describe drives on the same cable, but neither drive has control or priority over the other. ** A master clock that provides time signals used to synchronize one or more slave clocks as part of a clock network. ** In AXI ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wishbone Cross Bar
Wishbone commonly refers to: * Furcula, a fork-shaped bone in birds and some dinosaurs Wishbone may also refer to: * Wish-Bone, an American salad dressing and condiment company * Wishbone formation, a type of offense in American football * Wishbone (computer bus), an open source hardware computer bus * Wishbone boom, for control of sail on a windsurfing board * Wishbone, a submission hold and double-team attack in pro wrestling * Double wishbone suspension, an automotive design feature Popular culture * ''Wishbone'' (TV series), an American children's program * ''The Wishbone'', a 1933 British comedy film * Wish Bone (born 1974), American rapper * ''Wish Bone'' (album), by Oh Land * ''Wishbones'', an album by David Knopfler * "Wishbone", a song by Freya Ridings from '' You Mean the World to Me'' * "Wishbone", a song by Dropbox from the album ''Dropbox Dropbox is a file hosting service operated by the American company Dropbox, Inc., headquartered in San Francisco, Cali ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wishbone Pipeline
Wishbone commonly refers to: * Furcula, a fork-shaped bone in birds and some dinosaurs Wishbone may also refer to: * Wish-Bone, an American salad dressing and condiment company * Wishbone formation, a type of offense in American football * Wishbone (computer bus), an open source hardware computer bus * Wishbone boom, for control of sail on a windsurfing board * Wishbone, a submission hold and double-team attack in pro wrestling * Double wishbone suspension, an automotive design feature Popular culture * ''Wishbone'' (TV series), an American children's program * ''The Wishbone'', a 1933 British comedy film * Wish Bone (born 1974), American rapper * ''Wish Bone'' (album), by Oh Land * ''Wishbones'', an album by David Knopfler * "Wishbone", a song by Freya Ridings from '' You Mean the World to Me'' * "Wishbone", a song by Dropbox from the album ''Dropbox Dropbox is a file hosting service operated by the American company Dropbox, Inc., headquartered in San Francisco, Cali ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wishbone Shared Bus
Wishbone commonly refers to: * Furcula, a fork-shaped bone in birds and some dinosaurs Wishbone may also refer to: * Wish-Bone, an American salad dressing and condiment company * Wishbone formation, a type of offense in American football * Wishbone (computer bus), an open source hardware computer bus * Wishbone boom, for control of sail on a windsurfing board * Wishbone, a submission hold and double-team attack in pro wrestling * Double wishbone suspension, an automotive design feature Popular culture * ''Wishbone'' (TV series), an American children's program * '' The Wishbone'', a 1933 British comedy film * Wish Bone (born 1974), American rapper * ''Wish Bone'' (album), by Oh Land * ''Wishbones'', an album by David Knopfler * "Wishbone", a song by Freya Ridings from '' You Mean the World to Me'' * "Wishbone", a song by Dropbox from the album ''Dropbox Dropbox is a file hosting service operated by the American company Dropbox, Inc., headquartered in San Francisco, Cal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crossbar Switch
In electronics and telecommunications, a crossbar switch (cross-point switch, matrix switch) is a collection of switches arranged in a matrix configuration. A crossbar switch has multiple input and output lines that form a crossed pattern of interconnecting lines between which a connection may be established by closing a switch located at each intersection, the elements of the matrix. Originally, a crossbar switch consisted literally of crossing metal bars that provided the input and output paths. Later implementations achieved the same switching topology in solid-state electronics. The crossbar switch is one of the principal telephone exchange architectures, together with a rotary switch, memory switch, and a crossover switch. General properties A crossbar switch is an assembly of individual switches between a set of inputs and a set of outputs. The switches are arranged in a matrix. If the crossbar switch has M inputs and N outputs, then a crossbar has a matrix with ''M'' × ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Simple Bus Architecture
The Simple Bus Architecture (SBA) is a form of computer architecture. It is made up software tools and intellectual property cores (IP Core) interconnected by buses using simple and clear rules, that allow the implementation of an embedded system ( SoC). Basic templates are provided to accelerate design. The VHDL code that implements this architecture is portable. Master core The master core is a finite state machine (FSM) and performs basic data flow and processing, similar to a microprocessor, but with lower consumption of logic resources. Wishbone SBA is an application and a simplified version of the Wishbone Wishbone commonly refers to: * Furcula, a fork-shaped bone in birds and some dinosaurs Wishbone may also refer to: * Wish-Bone, an American salad dressing and condiment company * Wishbone formation, a type of offense in American football * Wish ... specification. SBA implements the minimum essential subset of the Wishbone signals interface. It can be c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Prior Art
Prior art (also known as state of the art or background art) is a concept in patent law used to determine the patentability of an invention, in particular whether an invention meets the novelty and the inventive step or non-obviousness criteria for patentability. In most systems of patent law, prior art is generally defined as anything that is made available, or disclosed, to the public that might be relevant to a patent's claim before the effective filing date of a patent application for an invention. However, notable differences exist in how prior art is specifically defined under different national, regional, and international patent systems. The prior art is evaluated by patent offices as part of the patent granting process in what is called “substantive examination” of a patent application in order to determine whether an invention claimed in the patent application meets the novelty and inventive step or non-obviousness criteria for patentability. It may also be consid ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Combinational Logic
In automata theory, combinational logic (also referred to as time-independent logic or combinatorial logic) is a type of digital logic which is implemented by Boolean circuits, where the output is a pure function of the present input only. This is in contrast to sequential logic, in which the output depends not only on the present input but also on the history of the input. In other words, sequential logic has ''memory'' while combinational logic does not. Combinational logic is used in computer circuits to perform Boolean algebra on input signals and on stored data. Practical computer circuits normally contain a mixture of combinational and sequential logic. For example, the part of an arithmetic logic unit, or ALU, that does mathematical calculations is constructed using combinational logic. Other circuits used in computers, such as half adders, full adders, half subtractors, full subtractors, multiplexers, demultiplexers, encoders and decoders are also made by using combin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Open Source Hardware
Open-source hardware (OSH) consists of physical artifacts of technology designed and offered by the open-design movement. Both free and open-source software (FOSS) and open-source hardware are created by this open-source culture movement and apply a like concept to a variety of components. It is sometimes, thus, referred to as FOSH (free and open-source hardware). The term usually means that information about the hardware is easily discerned so that others can make it – coupling it closely to the maker movement. Hardware design (i.e. mechanical drawings, schematics, bills of material, PCB layout data, HDL source code and integrated circuit layout data), in addition to the software that drives the hardware, are all released under free/libre terms. The original sharer gains feedback and potentially improvements on the design from the FOSH community. There is now significant evidence that such sharing can drive a high return on investment for the scientific community. It is n ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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