KIR-a graph-based model for description of mixed analog/digital systems

Grimm, C.; Waldschmidt, Klaus

doi:10.1109/eurdac.1996.558260

Cited by 9 publications

(6 citation statements)

References 5 publications

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“…The method is not applicable to systems described in the time-domain, like ADC. Grimm and Waldschmidt [1996] propose Kandis Intermediate Representation (KIR), a graph-based notation for mixed-signal systems. The emphasis is on defining a unified description style for interacting continuous-time, event-driven, and discrete-time functions.…”

Section: Related Workmentioning

confidence: 99%

A two-layer library-based approach to synthesis of analog systems from VHDL-AMS specifications

Doboli

Dhanwada

Nunez-Aldana

et al. 2004

ACM Trans. Des. Autom. Electron. Syst.

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This paper presents a synthesis methodology for analog systems described using VHDL-AMS language. Synthesis produces net-lists of analog components that are selected from a library, and sized so that specified objectives (like AC response, signal to noise ratio, dynamic range, area) are optimized. The gap between abstract specifications and implementations is bridged using a two-layered methodology. The first layer is architecture generation. The second layer is component synthesis and constraint transformation. Architecture generation employs the branch-and-bound algorithm to create architectural alternatives for a system. Component synthesis and constraint transformation use a directed interval based genetic algorithm that operates on parameter ranges. The performance estimation engine embeds technology process parameters, SPICE models for basic circuits, and symbolic composition equations for basic structural configurations. The paper discusses the VHDL-AMS subset for synthesis. The subset offers the composition semantics. As a result, specifications offer sufficient insight into the system structure to allow automated architecture generation. To justify the flexibility of the methodology, the paper presents results for three case studies, a signal conditioning system, a filter, and an analog to digital converter. Experiments show that constraint-satisfying designs can be synthesized in a short time, at a low cost, and without requesting broad knowledge on analog circuits.

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Section: Related Workmentioning

confidence: 99%

A two-layer library-based approach to synthesis of analog systems from VHDL-AMS specifications

Doboli

Dhanwada

Nunez-Aldana

et al. 2004

ACM Trans. Des. Autom. Electron. Syst.

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“…In [PL95,WS95] petri net models are extended for the integration of the continuous parts. In [GW96] a graph based formal model is used for hybrid systems. Based on this formalism a tool KANDIS [OGW95] exists for the construction of mixed analog/digital hardware systems.…”

Section: Introductionmentioning

confidence: 99%

Hybrid Systems: Computation and Control.

Henzinger¹,

Sastry²

1999

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“…This transformation is basically a discretization described in (Brielmann 1995). In contrast to other methods that contain continuous time control, e.g., (Grimm et at. 1996), this allows us to analyze properties for hardware/software-partitioning purposes in one common model.…”

Section: Introductionmentioning

confidence: 99%

“…differential equations) are done on a higher level and an earlier design step. Using a combined graph-based model for analog and digital system parts as described in (Grimm et at. 1996) has the disadvantage that the analyzing facilities are limited to structural properties of the graph.…”

Section: Introductionmentioning

confidence: 99%

Towards a Complete Design Method for Embedded Systems Using Predicate/Transition-Nets

Kleinjohann

Tacken

Tahedl

1997

Hardware Description Languages and Their Applications

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In this paper, we present a new approach to embedded system design based on modeling discrete and also continuous system parts with high level Petri-Nets. Our investigations concentrate on a complete design flow, analysis on high level Petri-Nets and their meaning for hardware/software partitioning of real-time embedded systems. The concepts for hybrid modeling of discrete and continuous systems are applied in an example in the domain of mechatronic systems.

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KIR-a graph-based model for description of mixed analog/digital systems

Cited by 9 publications

References 5 publications

A two-layer library-based approach to synthesis of analog systems from VHDL-AMS specifications

A two-layer library-based approach to synthesis of analog systems from VHDL-AMS specifications

Hybrid Systems: Computation and Control.

Towards a Complete Design Method for Embedded Systems Using Predicate/Transition-Nets

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