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Low power consumption non-ROM searching list phase amplitude converter

A look-up table and low power consumption technology, applied in the automatic control of power, electrical components, etc., can solve problems such as performance degradation and achieve the effect of reducing dynamic power consumption

Inactive Publication Date: 2006-06-14
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the traditional ROM look-up table structure-based phase-amplitude converter due to the use of large-capacity ROM look-up table performance degradation shortcomings, to propose a low-power phase-amplitude converter without ROM look-up table structure , replace the look-up table ROM with a pure logic operation module, which effectively reduces power consumption, and at the same time, the designed circuit can work at a higher speed

Method used

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  • Low power consumption non-ROM searching list phase amplitude converter
  • Low power consumption non-ROM searching list phase amplitude converter
  • Low power consumption non-ROM searching list phase amplitude converter

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Embodiment Construction

[0012] The present invention and its embodiments are further described below in conjunction with the accompanying drawings.

[0013] An embodiment of the low power consumption ROM look-up table phase amplitude converter without ROM of the present invention, its structure is as follows figure 2 shown in figure 2 Among them, the sine wave low power consumption ROM look-up table phase-amplitude converter 10 of this embodiment is composed of a condition negation unit 12, a control signal generator 14, an input data latch 16, a phase-amplitude conversion logic unit 20, and a multiplexer device 30 and N-bit adder 40; in the figure, the M-bit input phase, removing the first two bits (M-2 bits) phase is connected to the input of the conditional inversion unit 12, and is connected to the input of the conditional inversion unit 12 at the same time There is also the second bit (2MSB) of the input phase at the end; the first a bit of the output of the conditional negation unit 12 is co...

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PUM

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Abstract

This invention relates to a phase-amplitude converter of low power loss and non-ROM list including a condition negation unit, a control signal generator, an input data flip-latch, a phase amplitude conversion logic unit composed of K phase amplitude conversion logic modules, a multiple selector and a N-bit adder, in which, the input of the control signal generator is connected with the output of the condition negation unit, the input of the flip-latch is connected with the output of the condition negation unit, a second bit of an input phase and the output of the control signal generator, the input of a phase amplitude conversion logic unit is connected with the output of the flip-latch, the input of the selector is connected with the outputs of the logic unit and the generator and the input of the adder is connected with the output of the selector.

Description

technical field [0001] The invention belongs to the technical field of integrated circuit phase-amplitude converter design, in particular to a low-power-consumption ROM-free look-up table phase-amplitude converter design for direct digital frequency synthesizers and other sine (cosine) wave signal generation. Background technique [0002] Sine (cos) wave signal phase-amplitude converters applied to direct digital frequency synthesizers and other sine (cos) wave signal generation are usually based on ROM lookup table structure; in order to reduce the size of ROM lookup table, it is usually compressed algorithm to reduce the scale of the ROM lookup table; a typical sine (cosine) phase amplitude converter structure based on the ROM lookup table structure is as follows figure 1 As shown, the input phase is connected to the input end of the complement of 2, and an amplitude mapping is performed, and its output is connected to the address input end of the look-up table ROM as the ...

Claims

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Application Information

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IPC IPC(8): H03B28/00H03L7/00
Inventor 陈军杨华中罗嵘
Owner TSINGHUA UNIV
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