Adjustable and controllable delay circuit, delay circuit system and method

Abstract

The invention discloses an adjustable and controllable delay circuit, a delay circuit system and a method. The adjustable and controllable delay circuit comprises a conduction circuit, a control circuit, a charging and discharging circuit, a pushing circuit and a buffer circuit, wherein the conduction circuit is connected with the charging and discharging circuit through a first triode; the conduction circuit is used for controlling the voltage for conducting the first triode; the charging and discharging circuit is used for performing RC discharging; the charging and discharging circuit is connected with the control circuit; the control circuit selects a working state according to the state of the first triode; the charging and discharging circuit is connected with the pushing circuit through a second triode; the pushing circuit is connected with the buffer circuit; the pushing circuit is used for controlling voltage of a fourth power supply in the buffer circuit; and the buffer circuit is used for controlling the slow rising time of the fourth power supply. By means of the mode, the advantages of the delay circuit made of pure hardware or software can be compatible, the purposes of reducing cost and various delay times are achieved at the same time, and product competitiveness is improved.

Description

Technical field [0001] The present invention relates to the field of circuit design, and more particularly to a regulatable delay circuit, a delay circuit system, and a method. Background technique [0002] As needed, more functions are increasing, the functionality of the chip in the server is increasing, and the design of the integrated circuit is increasing, in order to support the needs of various applications in the server, the integrated circuit itself needs to be divided into Different areas are added to various functional modules, so there is a need for different sets of voltage input to different integrated circuits to produce different operating environments, and there may be a four groups or five sets of power supply requirements on the integrated circuit. The timing of the power supply at each group is required to control the specifications of the integrated circuit, usually solve the way of changing hardware lines or software control. [0003] Hardware ways cannot ac...

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Problems solved by technology

[0006] The present invention mainly solves the problem that the precise power supply sequence control design in the current hardware method is complicated and not easy to implement. If the code is wrong in the software method for precise power supply sequence control, the problem that the integrated circuit cannot operate normally will occur.

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