TAILIEUCHUNG - Digital Signal Processing Handbook P78

We describe a RASSP-based design methodology for application specific signal processing systems which supports reengineering and upgrading of legacy systems using a virtual prototyping design process. The VHSIC Hardware Description Language (VHDL) [6] is used throughout the process for the following reasons. One, it is an IEEE standard with continual updates and improvements; two, it has the ability to describe systems and circuits atmultiple abstraction levels; three, it is suitable for synthesis as well as simulation; and four, it is capable of documenting systems in an executable form throughout the design process | T. Egolf et. Al. Rapid Design and Prototyping of DSP Systems. 2000 CRC Press LLC. http . Rapid Design and Prototyping of DSP Systems Introduction Survey of Previous Research Infrastructure Criteria for the Design Flow The Executable Requirement An Executable Requirements Example MPEG-1 Decoder The Executable Specification An Executable Specification Example MPEG-1 Decoder Data and Control Flow Modeling Data and Control Flow Example Architectural Design Cost Models Architectural Design Model Performance Modeling and Architecture Verification A Performance Modeling Example SCI Networks Deterministic Performance Analysis for SCI DSP Design Case Single Sensor Multiple Processor SSMP T. Egolf M. Pettigrew J. Debardelaben R. Hezar S. Famorzadeh A. Kavipurapu M. Khan Lan-Rong Dung K. Balemarthy N. Desai Yong-kyu Jung and V. Madisetti Fully Functional and Interface Modeling and Hardware Virtual Prototypes Design Example I O Processor for Handling MPEG Data Stream Support for Legacy Systems Conclusions Acknowledgments Georgia Institute of Technology References The Rapid Prototyping of Application-Specific Signal Processors RASSP 1 2 3 program of the . Department of Defense ARPA and Tri-Services targets a 4X improvement in the design prototyping manufacturing and support processes relative to current practice . Based on a current practice study 1993 4 the prototyping time from system requirements definition to production and deployment of multiboard signal processors is between 37 and 73 months. Out of this time 25 to 49 months are devoted to detailed hardware software HW SW design and integration with 10 to 24 months devoted to the latter task of integration . With the utilization of a promising top-down hardware-less codesign methodology based on VHDL models of HW SW components at multiple abstractions reduction in design time has been shown especially in the area of hardware software .

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