A.Doboli et al, Behavioral Synthesis of Analog Systems using Two-Layered Design Space Exploration", Proc. of DAC, 1999.  Home/Search   Document Details and Download   Summary   Related Articles   Check

....implementation. The alternative approach is analog synthesis, which seeks to transform some abstract description into a working circuit. There is an extensive literature on cell level analog synthesis, e.g. 2] 13] but considerably fewer attempts at analog system synthesis, e.g. 14] [17]. None of these techniques is in widespread use today. We believe that these fail in practice because of the difficulties in reconciling the simplified models required for synthesis with the industrial strength simulation environments required for validation. Many techniques tradeoff accuracy in ....

....thinner. Macromodeling, e.g. 14] plays a central role, since many system level designs are intractable to simulate flat, at the device level. There is a wider variety of attacks on topology generation, e.g. via templates, pattern matching, scripting, hierarchical performance prediction [15 17], since systems have more degrees of freedom than cells. Hierarchical composition in the style of [5] plays a central role, since systems negotiate specifications with sub blocks to achieve overall goals. The added degrees of freedom inherent in these more complex designs have limited analog ....

A. Doboli, et al, "Behavioral synthesis of analog systems using two-layered design space exploration," Proc. ACM/IEEE DAC, June 1999.

....INTRODUCTION The growing trend towards integration of analog and digital designs has led to the need for mixed signal design automation tools. The VHDL AMS Synthesis Environment,VASE being developed at the University of Cincinnati performs synthesis of analog and mixedsignal designs for ASIC [1] and field programmable technologies [2, 3] In this paper, we address the problem of analog digital partitioning for synthesis of mixed signal systems from behavior level specifications. Our intermediate format for behavioral representation called Mixed Signal Flow Graph (MSFG) is based on the ....

A. Doboli et al., "Behavioral Synthesis of Analog Systems using Two Layered Design Space Exploration," in IEEE/ACM DAC, June 1999.

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A.Doboli et al, Behavioral Synthesis of Analog Systems using Two-Layered Design Space Exploration", Proc. of DAC, 1999.

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A. Doboli et al, "Behavioral Synthesis of Analog Systems using TwoLayered Design Space Exploration", Proc. of the Design Automation Conference, 1999, pp.951-957.

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A. Doboli et al, "Behavioral Synthesis of Analog Systems using Two-Layered Design Space Exploration", Proc. of 36th DAC, 1999.

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A. Doboli, A. Nunez, N.Dhanwada, S. Ganesan and R. Vemuri, "Behavioral Synthesis of Analog Systems using Two-Layered Design Space Exploration", Design Automation Conf., 1999.

....We present experiments and a design example for FPAA technology mapping and retargeting. 1 Introduction The VHDL AMS Synthesis Environment (VASE) being developed at the University of Cincinnati performs synthesis of analog and mixed signal designs. The first step is architecture generation [1]. It produces different system topologies for the given specification. This is followed by component selection and constraint transformation. They involve selection of ASIC components from the library and propagation of system level constraints to the component level. For every system topology, ....

A. Doboli, A. Nunez, N.Dhanwada, S. Ganesan and R. Vemuri, "Behavioral Synthesis of Analog Systems using Two-Layered Design Space Exploration", DAC `99, pp. 950-958.

.... cycle of mixed signal systems [13] High level mixed signal synthesis (HMS) takes as input an abstract high level specification of the system to be designed, and automatically produces analog and digital hardware that optimizes a large set of constraints i.e. area, power, speed, precision etc [7] [8] 13] Successive tasks are performed during HMS including (1) analog digital partitioning, 2) architecture generation, 3) performance model generation and (4) parameter optimization [8] 13] Highlevel specifications describe the behavior (functionality)of a mixed signal system without ....

....a system. Patterns enforce a certain interconnection structure between modules without specifying their nature. Concrete building blocks are passed as parameters for every HOF call. HOF s are very useful as system hierarchy and regularity can be effectively exploited in improving synthesis quality [7] [8] 3. aBlox provides a coherent notation for linking performance constraints and models to the constituting modules of a program. As a result, a large variety of performances such as speed, area, DC, AC and transient behavior, noise coupling, power consumptions etc can be expressed in a ....

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A. Doboli et al, "Behavioral Synthesis of Analog Systems using Two-Layered Design Space Exploration", Proc. of the 36th DAC, 1999, pp.951-957.

....on. The process of high level synthesis essentially involves the user specifying the functional and performance requirements in a high level language and the synthesis tool generating a circuit satisfying these requirements. There are several techniques for analog synthesis [3] 4] 5] [6]. Synthesis and verification are often viewed as the two sides of the same coin [7] Synthesis tools often restrict the style of design and the operating modes of the components so that effective design space exploration and function performance analysis is possible during synthesis. These very ....

....verifier of that logic to prove that circuit behavior implies the specified functional behavior. We discuss the existing methods of circuit analysis in Section 2. This is followed by the description of our technique in Section 3. In Section 4 we have given an implementation of our method in VASE [6]. We conclude with a discussion of the scope and limitations of this method and future extensions possible in Section 5. 2 Existing Methods Theory of analog circuit analysis well established. There are a number of well understood techniques such as nodal analysis and tableau analysis which have ....

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Alex Doboli, N. Dhanwada, A. Nunez-Aldana, , Sree Ganesan, and R. Vemuri. "Behavioral Synthesis of Analog Systems using Two-Layered Design Space Exploration". Proceedings of 36th Design Automation Conference, June 1999.

....is needed. The model must easily relate to the input specification. Also, it should allow the description of all relevant aspects for net list generation, symbolic analysis, and parameter optimization. Input specifications are described as SFGs (see Figure 1. 2a) The net list generation algorithm [1] also considers net lists at the block level. Thus, it is important that the model for symbolic analysis easily describes a hierarchy of connected blocks and how the overall performance parameters of the connected blocks relate to those of the composing blocks. Our mathematical model for symbolic ....

A. Doboli et al, "Behavioral Synthesis of Analog Systems using TwoLayered Design Space Exploration", Proc. of DAC, 1999, pp.951-957.

....FPAA architecture. We employ an integrated place and route approach in order to guarantee routability and performance. 1. Introduction The VHDL AMS Synthesis Environment (VASE) being developed at the University of Cincinnati performs synthesis of analog designs from specifications in VHDLAMS [1]. Rapid prototyping of these designs using fieldprogrammable analog arrays (FPAAs) enables rapid evaluation and validation of the designs. Implementing any non trivial circuit on FPAAs requires the support of sophisticated CAD tools. This paper focuses on the technology mapping, placement and ....

A. Doboli, A. Nunez, N.Dhanwada, S. Ganesan and R. Vemuri, "Behavioral Synthesis of Analog Systems using Two-Layered Design Space Exploration", DAC `99, pp.951-957.

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A. Doboli, A. Nunez, N.Dhanwada, S. Ganesan and R. Vemuri, "Behavioral Synthesis of Analog Systems using Two-Layered Design Space Exploration", Design Automation Conf., 1999.

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