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

Abstract

The invention discloses a reversible single-edge flip-flop with configurable logic functions, which is composed of 3 Feynman reversible logic gates and 5 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, And asynchronous setting enable signal output end, control signal output end, flip-flop current state signal output end, first garbage bit output end, second garbage bit output end, third garbage bit output end, fourth garbage bit output end , 2 signal output terminals for outputting clock signal or logic low level signal; the advantage is that it has asynchronous number setting function, and can realize reversible single-edge D flip-flop, reversible single-edge D flip-flop without changing the internal structure of the circuit Logic function of edge T flip-flop or reversible single-edge JK flip-flop.

Description

technical field [0001] The present invention relates to a reversible logic circuit, in particular to a reversible single-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 a reversible single-edge The logic function of D flip-flop, reversible single-edge T flip-flop or reversible single-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 ...

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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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