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Lookup NU author(s): Professor David Kinniment
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This paper illustrates certain design techniques and tradeoffs for application-specific processors by considering the design of fully integrated speed and torque controllers for electric motors. We begin with the algorithmic requirements of two controller ASICs leading to a top-level partitioning of each system. Critical partitions are then allocated to dedicated processors with customised instruction sets and architectures. The implementation of the ALU and the control unit of each processor is described and we conclude by reviewing the performance and design costs of the resulting systems. Our approach is suitable for embedded control applications where software requirements are not very extensive (e.g. several Kbytes of code and data) and significant cost and performance advantages can be obtained from integrating all the functions and software in a single chip. The use of application-specific processors simplifies the design and gives a performance advantage of about two to three times over a standard microcontroller or digital signal processor.
Author(s): Kappos E, Kinniment DJ
Publication type: Article
Publication status: Published
Journal: Microprocessors and Microsystems
Print publication date: 01/06/1996
ISSN (print): 0141-9331
ISSN (electronic): 1872-9436
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