By Vijay Madisetti, Chonlameth Arpnikanondt
The platform-centric SoC approach is geared toward the layout of today’s SoC structures with emphasis on real-time, embedded structures. The method offers a suggestion and an SoC layout atmosphere that promotes an integration of state of the art instruments and strategies precious for the improvement of the platforms. It renders a brand new and higher viewpoint in the direction of co-design methods, whereas additionally elevating a degree of layout abstraction. as the configurable platform items are designed off-cycle, they give a contribution to a normal development in improvement time. by means of incorporating their utilization, the general strategy moves a stability among overall layout flexibility and minimum time-to-market.
In bankruptcy 1, demanding situations within the co-design of SoCs are brought. The bankruptcy in brief describes the technical demanding situations dealing with process builders and introduces a proposed strategy to the matter. the rest of this publication offers a extra thorough exam at the challenge and the proposed approach.
Chapter 2 describes the proposed platform-centric SoC layout approach intimately. It illustrates the layout movement and discusses every one major step within the layout approach. Definition of a platform as initially outlined through Sabbagh , in addition to the platform-based and platform-centric layout ways, are awarded. The bankruptcy concludes via evaluating the proposed method with earlier similar work.
Chapter three lays out the technological heritage for the proposed SoC layout procedure. while the platform know-how is mentioned in bankruptcy 2, this bankruptcy provides an summary of the opposite basic applied sciences: the Unified Modeling Language (UML) and the Extensible Markup Language (XML). The bankruptcy starts with an creation to UML as a modeling device rather well perceived in the software program engineering group. it's via a dialogue on an try through the item administration staff (OMG) to empower UML for the advance of real-time embedded software program – an attempt for you to finally culminate in a layout framework referred to as the UML Profile for Schedulability, functionality, and Time Specification . Thereafter, an outline of XML and some different similar net applied sciences ensue.
Chapter four outlines the constitution of the library of platform gadgets (LPO), in addition to furnishes a entire instruction and standards specification platform item needs to own with a purpose to be scalable and appropriate with the proposed technique. crucial components for every platform item, e.g. structure blueprint, XML-based self-described modules, platform dealing with instrument, etc., also are mentioned intimately.
Chapter five presents an in depth therapy of UML extensions for the advance of real-time embedded structures. The bankruptcy begins with a format of the Co-design Modeling Framework (CMF) hierarchy that encompasses 5 different sub-profiles – the primary software profile (PCUprofile), the Exception Modeling profile (EMprofile), the Interrupt Modeling profile (IMprofile), the Synthesizable Description Language profile (SHDLprofile), and the structure Blueprint profile (ABprofile). each one of those profiles furnishes a layout framework that's in particular adapted for the proposed strategy, and should be capable of meet with the demanding situations posed by means of the layout and try of real-time embedded SoC-based structures. The bankruptcy, then, proceeds to debate the area proposal for every sub-profile, by means of the outline of the corresponding stereotypes.
Chapter 6 applies the platform-centric SoC layout technique, utilizing the CMF profile in UML, to the improvement of a simplified camera method as a way to show the use and the robustness of the proposed method. in particular, the NiOS improvement board is used to imitate the camera approach the place uncooked picture information are learn from a charge-coupled equipment (CCD), after which JPEG encoded and saved into reminiscence. The bankruptcy starts with an outline of the Altera’s NiOS approach, by way of the particular process improvement strategy that explicitly demonstrates using the proposed technique. A quantitative evaluate is then offered that compares the advance rate of the proposed platform-centric SoC layout technique opposed to a few replacement methods utilizing rate estimation types and tools.
Chapter 7 concludes the booklet with a precis and a dialogue of destiny instructions for this attempt on platform-based layout.
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Extra info for A Platform-Centric Approach to System-on-Chip (SOC) Design
A use case is a summary of scenarios for a single task of goal. An actor is who or what initiates the events involved in that task. The connection between actor and use case is called a communication association. A use case diagram can also be viewed as a collection of actors, use cases and their communications. Use case diagrams are helpful in such tasks as communicating with clients, and capturing and determining requirements. Introduction To UML And XML 43 Figure 3-1. Summary of UML notations A class diagram gives an overview of a system by depicting classes and the relationships among them.
Effectively these platform objects and their affiliated modules, such as an abstract representation of the platform, provide an architectural reference for the system developer. Auxiliary information, which uniquely defines and Platform-Centric SoC Design Methodology 25 identifies such an abstract representation and the relationship with its counterpart in the physical layer, forms a library of platform objects (LPO). It is the LPO modules in the logical layer with which system developers have direct contact, and not those in the physical layer.
The platform’s common architecture model, the blueprint, fosters the concept of scalability and “parametrizability”; it allows candidate components to be added in or taken out without affecting other candidates. Besides mitigating the architecture selection problem, such a characteristic can help the system developer avoid lower-level hardwaredependent programming, while, at the same time, posing additional requirements for the PO member modules (POmm). As such, a library of platform objects is a logical collection of pre-designed, pre-characterized platforms that are further governed by a set of rules and requirements specific to the proposed approach.