A reversible double-edge flip-flop with configurable logic function

Abstract

The invention discloses a reversible double-edge flip-flop with configurable logic functions, which is composed of 5 Feynman reversible logic gates and 7 Fredkin reversible logic gates, and has an asynchronous setting enabling signal input terminal, a clock signal input terminal, Control signal input terminal, first data input terminal, second data input terminal, preset number input terminal, first logic low level input terminal, second logic low level input terminal, third logic low level input terminal, The fourth logic low-level input terminal, and the asynchronous setting enable signal output terminal, the control signal output terminal, the trigger current signal output terminal, the first garbage bit output terminal, the second garbage bit output terminal, and the third garbage bit The output terminal, the fourth garbage bit output terminal, the fifth garbage bit output terminal, the sixth garbage bit output terminal, and the seventh garbage bit output terminal; the advantage is that it has an asynchronous number setting function, and can realize reversible double-edge D flip-flop, The logic function of reversible double-edge T flip-flop or reversible double-edge JK flip-flop.

Description

technical field [0001] The present invention relates to a reversible logic circuit, in particular to a reversible double-edge flip-flop with configurable logic functions, which is composed of a Feynman reversible logic gate and a Fredkin reversible logic gate, and is controlled by an input so that it can realize reversible double-edge The logic function of D flip-flop, reversible double-edge T flip-flop or reversible double-edge JK flip-flop realizes configurable logic function, and it has asynchronous setting function. Background technique [0002] How to reduce circuit power consumption is a key issue in integrated circuit design at present. In the traditional non-reversible logic circuit, the loss of information bit data is the main cause of circuit power consumption. Therefore, the design of reversible logic circuit that can avoid the loss of information bit data has become a way of low power consumption design. At the same time, reversible logic circuits are also an im...

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Problems solved by technology

[0005] However, existing reversible flip-flops do not have the function of asynchronous setting; in addition, reversible flip-flops are generally divided into reversible D flip-flops, reversible T flip-flops, and reversible JK flip-flops according to different logic functions, and the circuit of each reversible flip-flop The structures are different. In the past, in order to realize the conversion between different reversible flip-flops, additional logic gates were required, and not any two reversible flip-flops could be converted. For example, a reversible JK flip-flop can be converted into a reversible D flip-flop, but A reversible D flip-flop cannot be converted into a reversible JK flip-flop

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