Advances in Design and Specification Languages for Embedded by Fabien Prégaldiny, Christophe Lallement, Birahim Diagne,

By Fabien Prégaldiny, Christophe Lallement, Birahim Diagne, Jean-Michel Sallese (auth.), Sorin A. Huss (eds.)

Embedded platforms are in the meantime within the concentration of in rather varied software domain names corresponding to automobile, avionics, telecom, and patron items. the necessity for a shift in layout methodologies in the direction of process point layout is extensively recognized and layout flows aimed to an integration of software program and specification and implementation techniques are being built.

Standardization efforts, equivalent to SystemC Transaction point Modelling and version pushed structure of the OMG, give you the foundations of those new layout flows. layout and specification languages are of maximum curiosity within the sector of embedded structures and the discussion board on Specification and layout Languages has been once more been the most ecu occasion for the embedded platforms and chip layout community.

Advances in layout and Specification Languages for Embedded Systems is the newest contribution to the Chip layout Languages sequence and it contains chosen papers awarded on the discussion board on necessities and layout Languages (FDL'06), which came about in September 2006 at Technische Universität Darmstadt, Germany. FDL, an ECSI convention, is the most efficient ecu discussion board to offer study effects, to switch studies, and to profit approximately new traits within the software of specification and layout languages in addition to of linked layout and modelling tools and instruments for built-in circuits, embedded platforms, and heterogeneous structures. Modelling and specification strategies push the improvement of latest methodologies for layout and verification to approach point, they therefore give you the potential for a model-driven layout of advanced details processing platforms in numerous software domains.

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1. A 2 Graph of function m ˜ PB. 2 3 · A1 · Alim . The for A > Alim for others. 26 ADVANCES IN DESIGN AND SPECIFICATION OF EMBEDDED SYSTEMS Thus, the baseband characteristic can easily be expressed using the procedure introduced above (N (A, f ) ∈ R) m ˜ BB : XBB (f ) → XBB (f ) with (I (t) , Q (t) , t) → (N (A, f ) · I (t) , N (A, f ) · Q (t) f ) where A(t) = I(t)2 + Q(t)2 . This approach seems to be more convenient than only clamping the output amplitude for higher input amplitudes (cf. g. [3]) It should be considered that using this approach baseband models for several functions as quantizers, general piecewise-linear nonlinearities, limiters, exponential saturation, algebraic saturation, ideal hysteresis functions, and others can be established in a very simple way.

The for A > Alim for others. 26 ADVANCES IN DESIGN AND SPECIFICATION OF EMBEDDED SYSTEMS Thus, the baseband characteristic can easily be expressed using the procedure introduced above (N (A, f ) ∈ R) m ˜ BB : XBB (f ) → XBB (f ) with (I (t) , Q (t) , t) → (N (A, f ) · I (t) , N (A, f ) · Q (t) f ) where A(t) = I(t)2 + Q(t)2 . This approach seems to be more convenient than only clamping the output amplitude for higher input amplitudes (cf. g. [3]) It should be considered that using this approach baseband models for several functions as quantizers, general piecewise-linear nonlinearities, limiters, exponential saturation, algebraic saturation, ideal hysteresis functions, and others can be established in a very simple way.

The circuit equations are usually set up in an extended modified nodal analysis (MNA) for nonlinear equations. The resulting nonlinear equations contain the network equations in MNA (as used in most circuit simulators) as well as the nonlinear element relations resulting from the device model. The complexity of the circuit equations is increasing proportionally to the circuit’s size, which is again amplified by the complexity of the used device models. Therefore, the achieved equation sets are often extremely complex impossible to set up manually.

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