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Digital circuit capable of evolving and evolvement method

A digital circuit and circuit technology, applied in the direction of logic circuits using specific components, logic circuits using basic logic circuit components, etc., can solve the problems of inflexible interface applications and poor circuit versatility, and achieve versatility and occupy less resources. , to avoid the effect of asynchronous feedback

Inactive Publication Date: 2009-08-19
FUDAN UNIV
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0005] Therefore, it is necessary to provide an evolvable digital circuit to overcome the defects of the above-mentioned circuits such as poor versatility and inflexible interface applications.

Method used

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  • Digital circuit capable of evolving and evolvement method
  • Digital circuit capable of evolving and evolvement method

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Embodiment Construction

[0030] The solutions of the present invention will be further described below in conjunction with the drawings and specific embodiments. The evolvable digital circuit circuit structure of the present invention is mainly used for the application of internal evolvable hardware, such as figure 1 shown. This circuit is mainly divided into three parts. The first part is an evolvable combinational circuit, specifically a LUT (Look Up Table) array for realizing various logic functions. The details of the LUT array are as follows: figure 2 As shown, it can also be other structures such as gate arrays; the second part is a D flip-flop group as a status register, and the third part is a boundary-scan module used as an interface, specifically a JTAG boundary-scan chain, which consists of each boundary-scan unit Connected, the units can be used to apply stimuli to the circuit or to read responses back from the circuit, connected as required. The input of the first part is the output of...

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Abstract

The invention provides an evolvable digital circuit and an evolution method thereof. The evolvable digital circuit comprises an evolvable combinational circuit, a boundary scanning module used as an interface, and a connecting unit. The output end of the evolvable combinational circuit is connected with the input end of a state register, and the connecting unit is a multiplex selector. One path of the multiplex selector is connected with the boundary scanning module and the other path is connected with the output end of the state register. When the path connected with the boundary scanning module is gated, an excitation vector applied by the boundary scanning module is input into the evolvable combinational circuit. When the path connected with the state register is gated, the output of the state register is fed back to the evolvable combinational circuit. The evolvable digital circuit is provided with a universal test interface to improve the universality of the evolvable digital circuit, and is further compatible with a sequence circuit and a combinational circuit.

Description

technical field [0001] The invention relates to an evolvable hardware device, in particular to an evolvable digital circuit with a general test interface and an evolution method thereof. Background technique [0002] The research on evolvable hardware technology is divided into external evolvable hardware research and internal evolvable hardware research. The research of external evolvable hardware is to use software algorithm and circuit modeling to simulate the evolution process of actual circuit, so as to obtain appropriate circuit information, such as netlist, and realize the final information with hardware circuit. The research on internal evolvable hardware is to use programmable and reconfigurable hardware as the carrier of the circuit instead of modeling in software, so that the circuit can truly interact with the environment during the evolution process, and achieve practical evolvable hardware in the true sense. . Reference documents [1], [2], in recent years, wi...

Claims

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Application Information

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IPC IPC(8): H03K19/177
Inventor 来金梅杨华秋陈利光童家榕
Owner FUDAN UNIV
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