Numerically controlled ring oscillator and its control method and device

A digitally controlled oscillator, ring oscillator technology, applied in the direction of automatic power control, electrical components, etc., can solve the problem of limited output frequency accuracy and output frequency range, limit the output frequency accuracy and frequency range of numerically controlled ring oscillator, no solution has been proposed Solutions and other issues, to achieve the effect of solving the limited output frequency accuracy and output frequency range, improving the output frequency accuracy and frequency range, and good applicability

Active Publication Date: 2019-08-13
SOI MICRO CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, the parasitic resistance and parasitic capacitance generated by the layout and wiring of the layout also increase the delay of the numerical control ring oscillator compared with the theory, while the delay caused by the multiplexer and parasitic resistance and capacitance is affected by the process and power supply voltage. , temperature is strictly affected, and will always exist in the circuit, which seriously limits the output frequency accuracy and frequency range of the numerically controlled ring oscillator
[0004] Aiming at the problem of limited output frequency accuracy and output frequency range of the digitally controlled ring oscillator in the prior art, no effective solution has been proposed yet

Method used

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  • Numerically controlled ring oscillator and its control method and device
  • Numerically controlled ring oscillator and its control method and device
  • Numerically controlled ring oscillator and its control method and device

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0023] According to an embodiment of the present invention, an embodiment of a numerically controlled ring oscillator is provided.

[0024] figure 1 is a schematic diagram of a numerically controlled ring oscillator according to an embodiment of the present invention, such as figure 1 As shown, the numerically controlled ring oscillator includes: a high-order numerically controlled oscillator 11 and a low-order numerically controlled oscillator 13 .

[0025] Wherein, the input end of the low-level numerical control oscillator 13 is connected with the output end of the high-level numerical control oscillator 11, and the output end of the low-level numerical control oscillator 13 is connected with the input end of the high-level numerical control oscillator 11 and the output end of the numerical control ring oscillator.

[0026] Wherein, the control code of the high-order numerical control oscillator 11 is a high-order control code, and the control code of the low-order numeric...

Embodiment 2

[0051] According to an embodiment of the present invention, an embodiment of a method for controlling a numerically controlled ring oscillator is also provided. It should be noted that the steps shown in the flow charts of the accompanying drawings can be implemented in a computer system such as a set of computer-executable instructions and, although a logical order is shown in the flowcharts, in some cases the steps shown or described may be performed in an order different from that shown or described herein.

[0052] Figure 5 It is a flow chart of a control method of a numerically controlled ring oscillator according to an embodiment of the present invention, such as Figure 5 As shown, the method includes the following steps:

[0053] Step S52, acquiring the first control code of the digitally controlled ring oscillator.

[0054] Step S54, using the inherent delay to adjust the first control code to obtain the second control code.

[0055] Step S56, decomposing the seco...

Embodiment 3

[0107] According to an embodiment of the present invention, an embodiment of a control device for a numerically controlled ring oscillator is also provided.

[0108] Figure 9 It is a schematic diagram of a control device of a digitally controlled ring oscillator according to an embodiment of the present invention, such as Figure 9 As shown, the device includes:

[0109] The acquiring module 91 is configured to acquire the first control code of the digitally controlled ring oscillator.

[0110] The adjusting module 93 is configured to adjust the first control code by using the inherent delay to obtain the second control code.

[0111] The decomposing module 95 is configured to decompose the second control code into a high-order control code and a low-order control code.

[0112] The transmission module 97 is configured to transmit the high-bit control code to the high-bit numerical control oscillator, and transmit the low-bit control code to the low-bit numerical control o...

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PUM

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Abstract

The invention discloses a numerically controlled ring oscillator and a control method and device thereof. The numerically controlled ring oscillator comprises a high-order numerically controlled oscillator; and a low-order numerically controlled oscillator of which the input end is connected with the output end of the high-order numerically controlled oscillator and the output end is connected with the input end of the high-order numerically controlled oscillator and the output end of the numerically controlled ring oscillator, wherein the control code of the high-order numerically controlled oscillator is a high-order control code, and the control code of the low-order numerically controlled oscillator is a low-order control code. The technical problems of limitation of the output frequency accuracy and the output frequency range of the numerically controlled ring oscillator in the prior art can be solved.

Description

technical field [0001] The invention relates to the field of clock signal generation, in particular to a numerically controlled ring oscillator and a control method and device thereof. Background technique [0002] The clock is an integral part of the circuit system. The traditional clock source - crystal oscillator, has always been recognized as the best clock generator because of its excellent performance. However, with the continuous development of integrated circuits, crystal oscillators have also shown their own limitations. It has high power consumption, large area, and cannot be integrated, which are contrary to the development trend of today's integrated circuits. Therefore, researchers began to pay attention to the research of low-power and integrated on-chip clocks. Common on-chip clocks are divided into two types: analog and digital. The analog clock has high precision, but it also often has the disadvantages of high power consumption and large area. Moreover...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03L7/099
CPCH03L7/0995
Inventor 乔树山孙雅芃赵慧冬黑勇
Owner SOI MICRO CO LTD
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