"AMBA 一致性总线Hub接口介绍1.0版"

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Introducing the AMBA Coherent Hub Interface is a new interface designed by Arm Limited to improve the efficiency and performance of system-on-chip designs. This interface allows for seamless communication between different components within a system, ensuring that data transfer is smooth and synchronized. The AMBA Coherent Hub Interface eliminates the need for complex interconnects and ensures that data is transferred quickly and efficiently between different modules, such as processors, memory, and accelerators. This results in improved system performance and reduced latency, making it ideal for high-performance computing applications. One key feature of the AMBA Coherent Hub Interface is its ability to maintain coherency between different components within a system. This means that all processors and memory modules have access to the most up-to-date data, reducing the risk of inconsistencies or data corruption. In addition, the AMBA Coherent Hub Interface allows for scalable designs, making it easy to add or remove components as needed without impacting performance. This flexibility is essential for modern system designs, where the requirements can change rapidly. Overall, the AMBA Coherent Hub Interface is a powerful and versatile interface that can significantly enhance the performance and reliability of system-on-chip designs. Its ability to maintain coherency, improve data transfer speeds, and support scalable designs makes it an ideal choice for a wide range of applications, from mobile devices to supercomputers. In conclusion, the AMBA Coherent Hub Interface is a game-changer in the world of system-on-chip design. Its innovative features and capabilities make it a valuable addition to any system, helping to improve performance, efficiency, and reliability. Arm Limited has once again demonstrated its commitment to pushing the boundaries of technology and driving innovation in the semiconductor industry.

For macroscopically anisotropic media in which the variations in the phase stiffness tensor are small, formal solutions to the boundary-value problem have been developed in the form of perturbation series (Dederichs and Zeller, 1973; Gubernatis and Krumhansl, 1975 ; Willis, 1981). Due to the nature of the integral operator, one must contend with conditionally convergent integrals. One approach to this problem is to carry out a “renormalization” procedure which amounts to identifying physically what the conditionally convergent terms ought to contribute and replacing them by convergent terms that make this contribution (McCoy, 1979). For the special case of macroscopically isotropic media, the first few terms of this perturbation expansion have been explicitly given in terms of certain statistical correlation functions for both three-dimensional media (Beran and Molyneux, 1966 ; Milton and Phan-Thien, 1982) and two-dimensional media (Silnutzer, 1972 ; Milton, 1982). A drawback of all of these classical perturbation expansions is that they are only valid for media in which the moduli of the phases are nearly the same, albeit applicable for arbitrary volume fractions. In this paper we develop new, exact perturbation expansions for the effective stiffness tensor of macroscopically anisotropic composite media consisting of two isotropic phases by introducing an integral equation for the so-called “cavity” strain field. The expansions are not formal but rather the nth-order tensor coefficients are given explicitly in terms of integrals over products of certain tensor fields and a determinant involving n-point statistical correlation functions that render the integrals absolutely convergent in the infinite-volume limit. Thus, no renormalization analysis is required because the procedure used to solve the integral equation systematically leads to absolutely convergent integrals. Another useful feature of the expansions is that they converge rapidly for a class of dispersions for all volume fractions, even when the phase moduli differ significantly.

2023-06-02 上传