The use of compilers for structured cells such as RAMs, ROMs, multipliers and PLAs (programmable logic arrays) has become widespread in the design of application-specific integrated circuits (ASICs). The authors prese...
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The use of compilers for structured cells such as RAMs, ROMs, multipliers and PLAs (programmable logic arrays) has become widespread in the design of application-specific integrated circuits (ASICs). The authors present a methodology for testing circuits made from these compiled cells. The key elements of this methodology are the vector compilers that generate test suites for the compiled cells and an isolation strategy that allows these test suites to be applied to embedded functional blocks.< >
In this paper, we present a transistor level placer suitable for the macro cell design style. The Eulerian path finding algorithm is used to create locally optimal placements of groups of transistors, called stacks. T...
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In this paper, we present a transistor level placer suitable for the macro cell design style. The Eulerian path finding algorithm is used to create locally optimal placements of groups of transistors, called stacks. Typically however there are large disparities in the sizes of the various stacks obtained. It is therefore not always possible to meet the desired cell aspect ratio/height/width specifications. In our placer, these stacks can be reshaped so that the constraints on the cell are met. The optimisation tool used is simulated annealing. Placements for cells containing several hundred transistors were generated using this method.
A declaration hierarchical notation is introduced that allows the parametric representation of entire families of VLSI circuits. Layout, schematic diagrams and network structure are all accommodated by the notation in...
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A declaration hierarchical notation is introduced that allows the parametric representation of entire families of VLSI circuits. Layout, schematic diagrams and network structure are all accommodated by the notation in a way that emphasizes common elements. The notation is the basic of a structured environment for developing design generators as well as capturing design expertise.< >
A design-for-test scheme is presented that is capable of testing programmable and register logicarrays with the same low-cost test hardware. This scheme detects real faults resulting from mask defects in the circuit,...
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A design-for-test scheme is presented that is capable of testing programmable and register logicarrays with the same low-cost test hardware. This scheme detects real faults resulting from mask defects in the circuit, is practical to implement, and can be adopted as a built-in-test system using readily available modules in application-specific integrated circuits.< >
Field programmable gate arrays (FPGAs) play many important roles, ranging from small glue logic replacement to System-on-Chip designs. Nevertheless, FPGA vendors can not accurately specify the energy consumption infor...
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Field programmable gate arrays (FPGAs) play many important roles, ranging from small glue logic replacement to System-on-Chip designs. Nevertheless, FPGA vendors can not accurately specify the energy consumption information of their products on the device data sheets because the energy consumption of FPGAs is strongly dependent on target circuit including resource utilization, logic partitioning, mapping, placement and route. While major CAD tools have started to report average power consumption under given transition activities, energy optimal FPGA design demands more detailed energy estimation. The target design is telemetry system used for health monitoring applications. The FPGA is acting as the controller unit of both transmitter and receiver. Transmitter side is reading data from interfaced sensors. Verilog-HDL has been used to implement the required functions of the FPGA. In this paper, the power performance of the FPGA based design will be investigated using XILINX Xpower tool. Modelsim Code coverage feature has been incorporated to make sure that the test-bench cover all the nets branch statement of the design and create the most accurate Value Change Dump (VCD) file for the power consumption estimation.
This paper describes VTIstate, VLSI Technology's state machine compiler. The compiler derives combinational logic and registers to make a state machine, and synthesizes the combinational logic with three optimizat...
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This paper describes VTIstate, VLSI Technology's state machine compiler. The compiler derives combinational logic and registers to make a state machine, and synthesizes the combinational logic with three optimization steps. The 1986 Design Automation conference synthesis benchmark set is used to compare the results with previously reported logic synthesis programs.
A general decomposition concept is presented in this paper. The main strategy behind the presented Multilevel Decomposition Method (MDM) is striking a balance between serial decomposition and parallel decomposition. S...
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ISBN:
(纸本)9780818670398
A general decomposition concept is presented in this paper. The main strategy behind the presented Multilevel Decomposition Method (MDM) is striking a balance between serial decomposition and parallel decomposition. Such a strategy, on one hand, is capable of detecting and utilizing the fact that a group of outputs may depend on the same set of input variables and on the other hand eliminates the redundant variables of different outputs. The method is applicable to a variety of field programmable gate arrays. The results prove that the method is efficient and does not suffer from its generality.< >
In this paper we shall present a reconfigurable architecture that has been specifically conceived for emulating large-scale bio-inspired systems. The architecture is organized as a regular array of programmable elemen...
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In this paper we shall present a reconfigurable architecture that has been specifically conceived for emulating large-scale bio-inspired systems. The architecture is organized as a regular array of programmable elements that can be used either as fine grain logic elements or configured in order to construct massively parallel SIMD (single instruction multiple data) machines. As it will be explained, the specific features that have been included in the architecture permit the efficient implementation of a wide range of complex systems.
Epitaxial LaNiO/sub 3/ (LNO) thin films have been fabricated on [001]SrTiO/sub 3/ (STO) and [001]LaAlO/sub 3/ (LAO) single crystal substrates at 30 Pa oxygen partial pressure and 700/spl deg/C substrate temperature by...
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ISBN:
(纸本)0780326954
Epitaxial LaNiO/sub 3/ (LNO) thin films have been fabricated on [001]SrTiO/sub 3/ (STO) and [001]LaAlO/sub 3/ (LAO) single crystal substrates at 30 Pa oxygen partial pressure and 700/spl deg/C substrate temperature by pulsed laser ablation (PLA) using pulsed excimer laser. X-ray /spl theta/-2/spl theta/ scan, X-ray /spl phi/ scan were used to characterize the as-deposited LNO thin films. The resistance versus temperature of LNO/STO and LNO/LAO were performed by standard DC four point probe method. Down to 80 K the epitaxial LNO thin films showed good metallic behavior. The resistivity of epitaxial LNO thin film was 2.25/spl times/10/sup -6/ /spl Omega/.m at 300 K. Ferroelectric Pb(Zr/sub 0.53/Ti/sub 0.47/)O/sub 3/ (PZT) thin films have been grown on epitaxial LNO bottom electrodes by PLA method. The capacitance as well as the dielectric loss (tg/spl delta/) measurements of PZT thin film in the trilayer Ag/PZT/LNO/STO have been carried out using the HP 1615A Capacitance Bridge at room temperature. P-E hysteresis loop of this sample had been measured using the Sawyer-Tower circuit.
This paper describes a technology mapper for FPGAs with the complex structure of logic blocks. Most technology mappers developed so far are not effective for such complex logic block architectures as XILINX XC4000 ser...
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This paper describes a technology mapper for FPGAs with the complex structure of logic blocks. Most technology mappers developed so far are not effective for such complex logic block architectures as XILINX XC4000 series. The proposed mapper applies a constructive mapping algorithm and fuzzy logic rules to balance such criteria as area, timing, routability and others. Performance of the mapper is demonstrated on the set of MCNC benchmarks.
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