Sine wave generating device and method
A generation device, a sine wave technology, applied in the direction of pulse generation, electric pulse generation, digital function generator, etc., can solve the problem of inability to generate sine wave data information, high power consumption and cost of sine wave circuit, inaccurate sine wave frequency, etc. problem, to achieve the effect of rich frequency, accurate frequency, and reduced circuit area
Active Publication Date: 2016-08-17
SHENZHEN GOODIX TECH CO LTD
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Problems solved by technology
However, the current problem is that the data information of the sine wave is stored in the value lookup table. When MATLAB or other software tools generate the sine wave, the data in the value lookup table can be directly output according to the needs, and it is impossible to generate other than the value lookup table. The data information of the sine wave
Therefore, there are certain limitations in the existing methods. Some methods can only generate sine waves of specific frequencies, or some methods require a large circuit area when generating sine waves of different frequencies, and there are different frequencies of sine waves. Accuracy and Drift Phenomena
Therefore, not only the power consumption and cost of the circuit resulting in the digital circuit generating the sine wave are high, but also the effect of the generated sine wave in the time domain and the frequency domain is not good
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[0019] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.
[0020] In the description of the present invention, it should be understood that the terms "first", "second" and so on are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance. In the description of the present invention, it should be noted that unless otherwise specified and limited, the terms "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral Ground connection; it can be mecha...
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The present invention proposes a sine wave generating device and method. The device includes: a phase accumulation module, used to obtain the configuration information of the sine wave, and generate the address information of the sine wave based on the configuration information, where the address information includes integer address information and decimal address information; a value lookup module, used to generate the address information of the sine wave based on the integer address. The information searches for the first and second data information of the sine wave; the interpolation module is used to interpolate between the first and second data information according to the bit width of the decimal address information, and obtain the interpolation original data of the sine wave according to the decimal address information. information; a random truncation module, used to truncate the original interpolation data according to the bit width of the decimal address information and the pseudo-random sequence output value to obtain the final interpolation data information of the sine wave; and a sine wave generation module, used to generate Image information of sine waves. The device of the embodiment of the present invention can generate sine waves with richer and more precise frequencies by using digital circuits with a smaller area.
Description
technical field [0001] The invention relates to the technical field of digital circuits, in particular to a sine wave generating device and method. Background technique [0002] At present, there are many methods for generating sine waves by digital circuits, for example, using MATLAB (Matrix Laboratory, Matrix Laboratory) or other software tools to generate sine waves. However, the current problem is that the data information of the sine wave is stored in the value lookup table. When MATLAB or other software tools generate the sine wave, the data in the value lookup table can be directly output according to the needs, and it is impossible to generate other than the value lookup table. The data information of the sine wave. Therefore, there are certain limitations in the existing methods. Some methods can only generate sine waves of specific frequencies, or some methods require a large circuit area when generating sine waves of different frequencies, and there are different...
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IPC IPC(8): H03B28/00
CPCG06F1/0328G06F1/035G06F1/022G06F1/03H03B28/00G06F1/0321H03K3/012
Inventor 王光耀
Owner SHENZHEN GOODIX TECH CO LTD