By Mohamed S. Ben Romdhane, Vijay K. Madisetti (auth.), Mohamed S. Ben Romdhane, Vijay K. Madisetti, John W. Hines (eds.)
From the Foreword.....
glossy electronic sign processing functions offer a wide problem to the approach fashion designer. Algorithms have gotten more and more complicated, and but they have to be learned with tight functionality constraints. however, those DSP algorithms are usually equipped from many constituent canonical subtasks (e.g., IIR and FIR filters, FFTs) that may be reused in different subtasks. layout is then an issue of composing those center entities right into a cohesive complete to supply either the meant performance and the mandatory functionality.
on the way to set up the layout strategy, there were significant techniques. The top-down process starts off with an summary, concise, practical description that are quick generated. however, the bottom-up procedure starts off from a close low-level layout the place functionality might be without delay assessed, yet the place the needful layout and interface aspect take many years to generate. during this e-book, the authors express how to successfully get to the bottom of this rigidity via keeping the high-level conciseness of VHDL whereas parameterizing it to get stable healthy to precise functions via reuse of middle library parts. given that they construct on a pre-designed set of middle parts, actual quarter, velocity and tool estimates could be percolated to excessive- point layout exercises which discover the layout area. effects are notable, and the associated fee version supplied will end up to be very valuable. total, the authors have supplied an up to date process, doing an exceptional activity at getting functionality out of high-level layout.
The technique supplied makes strong use of extant layout instruments, and is real looking by way of the commercial layout technique. The procedure is fascinating in its personal correct, yet can also be of direct application, and it'll supply the prevailing DSP CAD instruments a hugely aggressive substitute. The concepts defined were built inside of ARPAs RASSP (Rapid Prototyping of software particular sign Processors) undertaking, and will be of serious curiosity there, in addition to to many business designers.
Professor Jonathan Allen, Massachusetts Institute of Technology
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Additional info for Quick-Turnaround ASIC Design in VHDL: Core-Based Behavioral Synthesis
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W , '. 10 , " . W Product Life=2W , , , • i . , ' Synopsys' model illustrating the effect of late product delivery. This break-even point means that if the demand for the product is larger than 303,850 units, then the ASIC approach is better than the FPGA approach. , respin, and inventory) are accounted for. Surprisingly, the time-to-market factor accounts for about 90% of the total cost. 5 CONCLUSION This chapter has reviewed the background required for this monograph. Design tools that allow a short design turnaround of ASICs are needed to compensate for a shrinking time-to-market and an increasing application complexity.
4. It consists of (1) uncommitted logic blocks, (2) programmable wires, and (3) programmable switches. The uncommitted logic blocks are disposed in an array structure that is interconnected through the programmable wires and switches. Full controllability over the functionality and the architecture of the target design can be obtained. The uncommitted logic blocks are either standard-function configurable logic blocks or programmable devices that can be programmed to perform any logic operation.
The approaches proposed in this monograph can also be used in the FPGA arena. The remainder of this section describes the top-down, bottom-up, and hybrid approaches to ASIC design in relation to FPGA-based design methodologies. Their advantages and limitations are also highlighted. , algorithmic level). Functional and timing detail is gradually added to the design as it approaches the physical implementation. Several steps must be carefully followed in order to produce an acceptable implementation.