Method and device for realizing any data bit width conversion

Abstract

The invention discloses a method and a device for realizing any data bit width conversion. The method is as follows: simplifying an input / output data bit width conversion ratio into an irreducible conversion ratio; reading a channel data conversion storage state; then reading residual data of last-time conversion and combining the residual data of last-time conversion with input data; performing beat counting on the combined data by use of a beat counting method, and counting beats till the irreducible conversion ratio; and sequentially outputting according to the corresponding beats. The device comprises a data bit width conversion ratio simplification module, a data conversion control module, a state storage module and a data output module. The method and the device for realizing any data bit width conversion have the advantages of realizing any data bit width conversion, simplifying a data conversion device structure, obviously reducing logical resources and area, improving the clock frequency, and the like.

Description

technical field [0001] The invention relates to a data conversion method, in particular to a method and device for realizing arbitrary data bit width conversion. Background technique [0002] Arbitrary bit width conversion technology is widely used in the design of logic circuits or large-scale integrated circuits, for example, it is necessary to convert input 8-bit wide data into 16-bit wide data. Bit-width conversion operations are required for a number of reasons, possibly due to the need to reduce the internal clock frequency of a logic circuit or an ASIC (Application Specific Integrated Circuit). According to the principle that the input data flow is equal to the output data flow, clk1*n(bit)=clk2*m(bit), if m is greater than n, clk2 must be smaller than clk1. From this equation, we can know that through the data bit width conversion, the small By converting the bit width into data with a large bit width, the clock frequency can be reduced, thereby reducing the design ...

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Problems solved by technology

Secondly, its conversion can only realize the conversion from n-shot data to 1-shot data, but cannot realize the conversion from n-shot data to m-shot data, but in fact, there are many such needs

There is another problem. With the increase of conversion channels, the data selection output circuit will become very complicated, and it is also difficult to increase the design clock frequency.

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