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As fabrication process technology continues to advance, mask set costs have become prohibitively expensive. Structured ASICs can offer price and performance between ASICs and FPGAs. They are attractive for mid-volume production and offer good intellectual property security. In this paper, a structured ASIC methodology, where 2 metal- and 1 via-mask are customised, is described. The CAD tools are fully...
This paper describes how the different CAD tools of the environment Xfuzzy 3, developed in Microelectronics Institute of Seville and University of Seville, allow to translate expressive linguistic models into mathematical ones, in particular, into a combination of piecewise polynomial systems that can be implemented efficiently in hardware. The new synthesis tool of Xfuzzy 3 automates communication...
The following topics are dealt with: analog circuits; signal and data processing; mixed-signal circuit techniques; CAD tools for advanced SOCs; field programmable gate arrays; CAD for VLSI; circuit design and; nanoelectronics.
Modern advances in reconfigurable technologies are allowing analog circuit designers to benefit from the computational flexibility provided by large-scale field-programmable analog arrays (FPAAs). With the component density of these devices, small analog circuits as well as larger analog systems can be synthesized and tested in a shorter time and at a lower cost compared to the full design cycle....
Interconnect structures significantly contribute to the delay, power consumption, and silicon area of modern reconfigurable architectures. The demand for higher clock frequencies and logic densities is also important for the field-programmable gate array (FPGA) paradigm. Three-dimensional (3-D) integration can alleviate such performance limitations by accommodating a number of additional silicon layers...
Due to weaknesses in circuit synthesis methods used in todaypsilas CAD tools, the opportunities created by modern microelectronic technology cannot effectively be exploited. This paper considers major issues and requirements of circuit synthesis for the nano CMOS technologies, and discusses our new information-driven circuit synthesis technology that satisfies these requirements. It focuses on an...
This paper introduces DesignTag - a novel, patented, dasiasecurity tagpsila technology which can be used to verify the authenticity of semiconductor devices. The tag takes the form of a small digital circuit which is added to the chip design and communicates through the package with an external sensor. Falsely marked dasiaghostpsila chips are present in the supply chain and cause economic damage to...
There are still no reference design flow for mixed-signal circuits. The aim of this paper is to present distinct analog and digital design flows in the context of a mixed-signal environment. A top-level mixed mode design flow is presented showing different levels of interaction between the analog and digital domains. Examples of CAD tools are also indicated. Finally a case study of a USB 2.0 physical...
In electrical engineering graduate schools, integrated circuit design is usually taught through lectures, tutorials, projects and labs. During these courses, the reference to electronic design automation software is essential. However, it is during the projects that the students acquire the most of their know-how in this field: since these project topics are given by industrialists or researchers,...
Computer aided design (CAD) and optimization of on-chip spiral inductors is of immense interest to RFIC designers. Traditional optimization methods rely on approximate/fast "coarse models" of spiral inductors, e.g. equivalent circuits, empirical equations, etc. Naturally, the accuracy/validity of optimized results from such methods depends highly on the quality of the coarse models used...
The critical analysis and survey of evolution tendency of integrated technologies and design methodologies are presented. The practical features and up-to-date trends of application specific integrated circuits (ASIC) and programmable logic based (FPGA) designs are considered. Some near-term forecast of integrated technologies development is proposed.
As the development of photonics industry, there is a growing demand for accurate and efficient CAD tools for designing photonics devices and circuits. Compared with the EDA tools in R/F microwave and microelectronics, however, photonics CAD tools is still in its early stage. Following the successful paths of R/F microwave and microelectronic industries, we have developed a photonic circuit simulator...
Interval methods offer a general, fine-grain strategy for modeling correlated range uncertainties in numerical algorithms. We present a new, improved interval algebra that extends the classical affine form to a more rigorous statistical foundation. Range uncertainties now take the form of confidence intervals. In place of pessimistic interval bounds, we minimize the probability of numerical "escape";...
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