In this paper, a new architecture of configurable analog unit based on switch capacitor technology is presented. the architecture consists of four parts of input expansion, SC building block, self-calibrating OpAmp an...
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In this paper, a new architecture of configurable analog unit based on switch capacitor technology is presented. the architecture consists of four parts of input expansion, SC building block, self-calibrating OpAmp and clock control. the architecture not only achieves linear analog application such as integrator, gain amplifier, filter, etc., but also can be expediently configured to implementing some nonlinear analog applications. A programming mechanism using two programmable selector for parameter selector and function selector are illustrated for the architecture. the architecture is propitious to utilize configuration and technology mapping. As nonlinear analog application, a voltage control oscillator is implemented. Simulation result with HSPICE shows that for 0.6 /spl mu/ CMOS process, the relative error of voltage-frequency is less than 0.2%.
In this paper a novel VLSI Reed Solomon decoder architecture is presented. During the design flow, particular care has been posed to the methodology used in order to grant a great degree of reusability. the obtained d...
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In this paper a novel VLSI Reed Solomon decoder architecture is presented. During the design flow, particular care has been posed to the methodology used in order to grant a great degree of reusability. the obtained decoder core is very suitable for complex System On Chip (SoC) based applications, common in networking environments. In fact, thanks to the high reliability allowed by advanced channel coding techniques, the architecture developed has interesting figures of simplicity and speed. logic synthesis on a FPGA device has shown an operating frequency up to 86 MHz with a core area of just 447 cells.
In recent years more and more applications are built on FPGA technology supported by additional analog-digital and digital-analog circuits like video processors or RAM-DAC modules. Configuring of reprogrammable circui...
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In recent years more and more applications are built on FPGA technology supported by additional analog-digital and digital-analog circuits like video processors or RAM-DAC modules. Configuring of reprogrammable circuits is made by special bitstream loading. Additional circuits in most cases are controlled by a two-wire I/sup 2/C bus. In this paper an in-system reconfiguring and I/sup 2/C control concept without extra hardware is described.
this paper presents the development of an FPGA-based proportional-differential (PD) fuzzy look-up table (LUT) controller. the fuzzy inference uses a 256-value LUT. this method has been used due to its reduced computat...
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this paper presents the development of an FPGA-based proportional-differential (PD) fuzzy look-up table (LUT) controller. the fuzzy inference uses a 256-value LUT. this method has been used due to its reduced computation time cost. the controller architecture is focused on the treatment of errors and changes in errors with tuning gains in order to regulate the control system dynamics using a traditional method in industrial processes. the controller has been probed with several nonlinear plants, like an inverted pendulum and magnetic levitation, but the tuning of the system is too difficult using an iterative modification of the gains. A genetic algorithm was therefore used as a tuning tool to obtain a particular overshoot in the transient response of the control system.
We introduce a technique for testing partially reconfigurable FPGAs. the test technique is intended to be applied in reconfigurable systems in run time applications. Normally, in reconfigurable systems, each FPGA exec...
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ISBN:
(纸本)078037522X
We introduce a technique for testing partially reconfigurable FPGAs. the test technique is intended to be applied in reconfigurable systems in run time applications. Normally, in reconfigurable systems, each FPGA executes many tasks sequentially. therefore, it is configured many times in run time applications. We propose that each FPGA is tested just before each configuration. the whole system remains functional because other FPGAs are still in function when the target FPGA is under test. Since the FPGA's transit time from one task to another has a direct consequence on the system delay, the test must be very fast. therefore, the test proposed targets only a test of tiles where the majority of the data will be configured and only configurable logic blocks actually used are tested. the technique proposed targets test which is achieved within the fault tolerant system, and is very useful in some critical applications with time and resources constraints.
In this paper a reprogrammable video processor architecture is presented. the processor is based on FPGA technology so it can be programmed to work with different algorithms prepared by the user (i.e. edge detection)....
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In this paper a reprogrammable video processor architecture is presented. the processor is based on FPGA technology so it can be programmed to work with different algorithms prepared by the user (i.e. edge detection). Processing performance can be very high since each algorithm definition is hardware optimized.
the proceedings contain 101 papers. the special focus in this conference is on Network Processors and Prototyping. the topics include: the rising wave of field programmability;tightly integrated design space explorati...
ISBN:
(纸本)3540678999
the proceedings contain 101 papers. the special focus in this conference is on Network Processors and Prototyping. the topics include: the rising wave of field programmability;tightly integrated design space exploration with spatial and temporal partitioning in SPARCS;a dynamically reconfigurable FPGA-based content addressable memory for internet protocol characterization;a compiler directed approach to hiding configuration latency in chameleon processors;reconfigurable network processors based on fieldprogrammable system level integrated circuits;fieldprogrammable communication emulation and optimization for embedded system design;FPGA-based emulation;FPGA-based prototyping for product definition;implementation of virtual circuits by means of the FIPSOC devices;static and dynamic reconfigurable designs for a 2D shape-adaptive DCT;a self-reconfigurable gate array architecture;multitasking on FPGA coprocessors;design visualisation for dynamically reconfigurable systems;verification of dynamically reconfigurable logic;design of a fault tolerant FPGA;real-time face detection on a configurable hardware system;multifunctional programmable single-board CAN monitoring module;self-testing of linear segments in user-programmed FPGAs;implementing a fieldbus interface using an FPGA;area-optimized technology mapping for hybrid FPGAs;direct mapping of arbitrary components into LUT-based FPGAs;efficient embedding of partitioned circuits onto multi-FPGA boards;a placement algorithm for FPGA designs with multiple I/O standards;a mapping methodology for code trees onto LUT-based FPGAs;possibilities and limitations of applying evolvable hardware to real-world applications;a co-processor system with a virtex FPGA for evolutionary computation and system design with genetic algorithms.
this paper describes our hardware prototyping and verification system for teaching digital circuits. the system is composed of FPGA modules and a general hardware verification interface which supports utilizing any co...
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In this article, we discuss various realizations of reusable DSP functions in FPGA devices. We have generated generic multipliers and dividers in VHDL code which can be used later for building more complex structures....
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