Squarer circuit and implementing method thereof

Abstract

The invention discloses a realization circuit for a squarer, which comprises: an acquisition module that is used to acquire a mutual multiply item, square item and supplement item according to the input symbolic number during the squaring process; a first sum module that sums up the mutual multiply item attained by the acquisition module and generates a first sum result; a second sum module that sums up the first sum result attained by the first sum module and the square item attained by the acquisition module and generates a second sum result; a third sum module that sums up the second sum result attained by the second sum module and the supplement item attained by the acquisition module and generates a third sum result; a combination module that combines the third sum result attained by the third sum module and a lower 2bit digit and generates a square result for the symbolic number. Therefore, the invention simplifies the circuit structure for realizing the squarer and greatly saves the circuit resources.

Description

technical field [0001] The embodiments of the present invention relate to the field of circuit design, in particular to a squarer circuit and an implementation method. Background technique [0002] The squarer is one of the typical circuits widely used in the field of science and technology. In actual circuit design, the squarer can be realized by a multiplier or by a look-up table method. [0003] Among them, the implementation structure using the multiplier is as follows figure 1 As shown, it includes an absolute value implementation circuit and a multiplier. The implementation process of the squarer is as follows, and the 4bit signed number is used as an example to illustrate. [0004] First, the binary expression of the input data A of 4bit signed number is as follows: [0005] A=a 3 ×2 3 +a 2 ×2 2 +a 1 ×2 1 +a 0 ×2 0 , [0006] where a i =0 or 1, i=0,1,2,3; [0007] Step 1: Use the absolute value implementation circuit to obtain and output the absolute valu...

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Problems solved by technology

[0018] In the process of realizing the present invention, the inventor found that the above prior art has the following disadvantages: the waste of resources in the methods in the prior art is relatively serious

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