CN111176192B - Flow control system, method and device for controlling chip starting flow - Google Patents
Flow control system, method and device for controlling chip starting flow Download PDFInfo
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- CN111176192B CN111176192B CN202010064895.0A CN202010064895A CN111176192B CN 111176192 B CN111176192 B CN 111176192B CN 202010064895 A CN202010064895 A CN 202010064895A CN 111176192 B CN111176192 B CN 111176192B
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0428—Safety, monitoring
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/26—Pc applications
- G05B2219/2612—Data acquisition interface
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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Abstract
The invention is applicable to the technical field of electronic control, and provides a flow control system, a method and a device for controlling a chip start flow, wherein the system comprises: the invention continuously generates a string of sine wave signals through the digital-analog converter, sends the signals to the external modulation circuit for modulation through a chip output port, sends the sine wave signals to the analog-digital converter for acquisition through a chip input port after modulation processing of the external modulation circuit, obtains acquisition signals, carries out phase difference calculation on the acquisition signals and digital signals corresponding to the sine wave signals through the phase comparator circuit, and can obtain corresponding starting flow information according to the obtained signal phase difference data, thereby reducing the requirement on IO resources, avoiding the interference of level noise and improving the accuracy of flow control.
Description
Technical Field
The invention belongs to the technical field of electronic control, and particularly relates to a flow control system, method and device for controlling a chip starting flow.
Background
In the field of electronic chips, due to the need for chip testing, different start-up process control, or differentiation of mass production version specifications, these information are often encoded by a method to inform the chip during start-up. In the conventional scheme, a part of the configuration is determined by using an electrically programmable fuse (i.e. EFUSE), however, EFUSE is not ready at the initial stage of starting the chip, so that EFUSE is not used, and EFUSE resources are occupied; another widely used method is to use multiple input/output (i.e. IO) ports, and determine the starting process or specification by different high-low level coding methods, however, the coding in this method is severely limited by the number of IOs, the more the process of the control is required to be branched, the more the number of IOs is required, and the interference is also easily affected by the level method.
Disclosure of Invention
The invention aims to provide a flow control system, method and device for controlling a chip start flow, and aims to solve the problems that the prior art cannot provide an effective chip start flow control method, so that the demand on IO resources is high and the IO resources are easy to interfere.
In one aspect, the present invention provides a process control system for controlling a process of a chip, where the process control system includes a process control chip and an external modulation circuit connected to an input/output port of the process control chip, and the process control chip is characterized in that the process control chip includes a digital-to-analog converter connected to one end of the external modulation circuit through an output port of the process control chip, an analog-to-digital converter connected to the other end of the external modulation circuit through an input port of the process control chip, and a phase comparator circuit connected to the digital-to-analog converter and the analog-to-digital converter, respectively, where the digital-to-analog converter is configured to continuously generate a series of sine wave signals, the external modulation circuit is configured to modulate the sine wave signals generated by the digital-to-analog converter to obtain corresponding modulation signals, the analog-to-digital converter is configured to acquire the corresponding acquisition signals, and the phase comparator circuit is configured to perform phase difference calculation on digital signals corresponding to the acquisition signals and the sine wave signals to obtain corresponding process information according to the calculated phase difference.
Preferably, the analog to digital converter sampling rate is at least 200 times the sine wave signal frequency.
Preferably, the external modulation circuit is a modulation circuit with a resistor and a capacitor connected in series.
Still preferably, the external modulation circuit is a modulation circuit in which a resistor and an inductor are connected in series.
In another aspect, the present invention provides a flow control method of the above-mentioned flow control system, the method including the steps of:
when the flow control chip receives a square wave signal generated by a preset signal source, the digital-to-analog converter in the flow control chip continuously generates a string of sine wave signals according to the square wave signal and sends the sine wave signals to the external modulation circuit connected with the output port of the flow control chip;
the external modulation circuit modulates the sine wave signal to obtain a corresponding modulation signal, and sends the modulation signal to the analog-digital converter in the flow control chip through an input port of the flow control chip;
the analog-digital converter acquires the modulation signal to obtain a corresponding acquisition signal;
and the phase comparator circuit in the flow control chip calculates the phase difference of the acquired signal and the digital signal corresponding to the sine wave signal, so as to obtain corresponding starting flow information according to the calculated phase difference.
Preferably, the step of continuously generating a series of sine wave signals by the digital-analog converter in the flow control chip according to the square wave signals includes:
the digital-to-analog converter continuously and uniformly generates a series of sine wave signals according to the square wave signals, and the preset signal duration, the interval between adjacent pulses and the sine wave frequency.
Further preferably, before the step of continuously generating a series of sine wave signals by the digital-to-analog converter in the flow control chip according to the square wave signals, the method further includes:
the analog-to-digital converter sampling rate is set to be at least 200 times the sine wave frequency.
Still preferably, the external modulation circuit is a modulation circuit in which a resistor and a capacitor or a resistor and an inductor are connected in series.
In another aspect, the present invention provides a flow control device of the above flow control system, where the device includes:
the digital-to-analog converter in the flow control chip continuously generates a string of sine wave signals according to the square wave signals when the flow control chip receives the square wave signals generated by the preset signal source, and sends the sine wave signals to the external modulation circuit connected with the output port of the flow control chip;
the signal modulation unit is used for modulating the sine wave signal by the external modulation circuit to obtain a corresponding modulation signal, and sending the modulation signal to the analog-digital converter in the flow control chip through an input port of the flow control chip;
the second signal obtaining unit is used for collecting the modulation signals by the analog-digital converter to obtain corresponding collected signals; and
and the phase difference calculation unit is used for calculating the phase difference of the digital signals corresponding to the acquired signals and the sine wave signals by the phase comparator circuit in the flow control chip so as to obtain corresponding starting flow information according to the calculated phase difference.
Preferably, the first signal generating unit includes:
the signal generation subunit is used for continuously and uniformly generating a series of sine wave signals by the digital-analog converter according to the square wave signals, and the preset signal duration, the interval between adjacent pulses and the sine wave frequency.
The invention provides a flow control system for controlling a chip start flow, which comprises a flow control chip and an external modulation circuit, wherein the flow control chip comprises a digital-to-analog converter, an analog-to-digital converter and a phase comparator circuit.
Drawings
Fig. 1 is a schematic structural diagram of a flow control system for controlling a chip start-up flow according to an embodiment of the present invention;
FIG. 2 is an exemplary diagram of a process control system provided in accordance with a first embodiment of the present invention;
fig. 3 is a flowchart of an implementation of a flow control method for controlling a chip start-up flow according to a second embodiment of the present invention; and
fig. 4 is a schematic structural diagram of a flow control device for controlling a chip start-up flow according to a third embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
The following describes in detail the implementation of the present invention in connection with specific embodiments:
embodiment one:
fig. 1 shows a configuration of a flow control system for controlling a chip start-up flow according to an embodiment of the present invention, and for convenience of explanation, only a portion related to the embodiment of the present invention is shown.
The embodiment of the invention provides a flow control system 1 for controlling a chip start flow, the flow control system 1 comprises a flow control chip 11, and an external modulation circuit 12 for modulating signals and connected with an input/output port (i.e. an IO port) of the flow control chip 11, wherein:
the flow control chip 11 includes a digital-to-Analog converter (Digital to Analog converter, abbreviated as DAC) 110, an Analog-to-digital converter, abbreviated as ADC) 111, and a phase comparator circuit 112, where the DAC 110 is configured to continuously generate a series of sine wave signals, and is connected to one end of the external modulation circuit 12 through an output port of the flow control chip 11, the ADC 111 is configured to collect modulation signals modulated by the external modulation circuit 12, and is connected to the other end of the external modulation circuit 12 through an input port of the flow control chip 11, and the phase comparator circuit 112 respectively connected to the DAC 110 and the ADC 111 is configured to perform phase difference calculation on the collected signals collected by the ADC 111 and digital signals corresponding to the sine wave signals output by the DAC 110, so as to obtain corresponding start-up flow information according to the calculated phase difference.
Preferably, the ADC 111 samples at least 200 times the frequency of the sine wave signal generated by the DAC 110, thereby improving the accuracy of the phase.
Preferably, the external modulation circuit 12 is a modulation circuit with a resistor and a capacitor or a series connection of a resistor and an inductor, thereby reducing the cost of the flow control system.
It is further preferable that one end of the external modulation circuit 12 connected to the input port of the flow control chip 11 is between a resistor and a capacitor or between a resistor and an inductor, thereby securing a modulation effect. As an example, fig. 2 shows an external modulation circuit 12 composed of an inductance 121 and a resistance 122, and a connection example of the flow control chip 11 and the external modulation circuit 12.
The embodiment of the invention provides a flow control system for controlling a chip start flow, which comprises a flow control chip and an external modulation circuit connected with an IO port of the chip, wherein the flow control chip comprises a DAC (digital-to-analog converter), an ADC (analog-to-digital converter) and a phase comparator circuit.
Embodiment two:
fig. 3 shows an implementation flow of a flow control method for controlling a chip start-up flow according to the second embodiment of the present invention, and for convenience of explanation, only the relevant portions of the embodiments of the present invention are shown, which are described in detail below:
in step S301, when the flow control chip receives a square wave signal generated by a preset signal source, a digital-to-analog converter in the flow control chip continuously generates a series of sine wave signals according to the square wave signal, and sends the sine wave signals to an external modulation circuit connected to an output port of the flow control chip.
The embodiment of the invention is applicable to the flow control system for starting the flow of the control chip in the first embodiment, when the flow control chip receives the square wave signal generated by the preset signal source, the DAC in the flow control chip continuously generates a string of sine wave signals according to the square wave signal and sends the sine wave signals to the external modulation circuit connected with the output port of the flow control chip, wherein the square wave signals are digital signals, the sine wave signals are analog signals corresponding to the square wave signals, and the DAC is a low-precision and accurate-frequency digital-analog converter.
Preferably, the DAC continuously and uniformly generates a series of sine wave signals according to the square wave signal, with a preset signal duration, a distance between adjacent pulses, and a sine wave frequency, that is, the generated sine wave signals continuously last for the preset signal duration each time, two pulses in the signals are separated by a preset distance, and the signal frequency is the preset sine wave frequency, so that the accuracy of the frequency is ensured.
Further preferably, the preset interval between adjacent pulses of the sine wave signal is larger than the preset pulse interval, so that the accuracy of the frequency is further ensured.
In step S302, the external modulation circuit modulates the sine wave signal to obtain a corresponding modulated signal, and sends the modulated signal to an analog-to-digital converter in the flow control chip through an input port of the flow control chip.
In the embodiment of the invention, after the external modulation circuit receives the sine wave signal output by the DAC, the sine wave signal is modulated, and after the signal modulation is finished, the obtained modulation signal is sent back to the ADC in the flow control chip through the input port of the flow control chip.
Preferably, the external modulation circuit is a modulation circuit formed by connecting a resistor and a capacitor or connecting a resistor and an inductor in series, so that the phase change of a modulation signal of a test point among the resistor, the capacitor or the resistor and the inductor is realized, and the modulation cost is reduced.
In step S303, the analog-to-digital converter acquires the modulated signal to obtain a corresponding acquired signal.
In the embodiment of the invention, the modulated signal is acquired through the low-precision ADC to obtain the corresponding acquired signal, and the acquired signal is the digital signal corresponding to the modulated signal.
Preferably, the ADC sampling rate is set to be at least 200 times the frequency of the sine wave signal produced by the DAC, thereby improving the accuracy of the phase.
In step S304, a phase comparator circuit in the flow control chip performs phase difference calculation on the digital signal corresponding to the acquired signal and the sine wave signal, so as to obtain corresponding start flow information according to the calculated phase difference.
In the embodiment of the invention, the phase difference of the digital signals corresponding to the acquisition signals and the sine wave signals is calculated through the phase comparator circuit in the flow control chip, and the corresponding starting flow information can be known according to the phase difference.
In the embodiment of the invention, a series of sine wave signals are continuously generated through the DAC, the signals are sent to an external modulation circuit through a chip output port for modulation, the sine wave signals are sent to the ADC through a chip input port for acquisition after being modulated by the external modulation circuit, acquired signals are obtained, phase difference calculation is carried out on digital signals corresponding to the acquired signals and the sine wave signals through a phase comparator circuit, corresponding starting flow information can be obtained according to the obtained signal phase difference data, and therefore, the different chip starting flows are distinguished according to different modulation circuits only through two IO ports, the requirement of a traditional IO coding mode on multiple IOs is reduced, meanwhile, the interference of level noise is avoided through storing the starting flow information in signal phases, and the accuracy of flow control is improved.
Embodiment III:
fig. 4 shows a structure of a flow control device for controlling a chip start-up flow according to the third embodiment of the present invention, and for convenience of explanation, only a portion related to the embodiment of the present invention is shown, where the flow control device includes:
the first signal generating unit 41 is configured to, when the flow control chip receives a square wave signal generated by a preset signal source, continuously generate a series of sine wave signals according to the square wave signal by a digital-to-analog converter in the flow control chip, and send the sine wave signals to an external modulation circuit connected to an output port of the flow control chip;
the signal modulation unit 42 is configured to modulate the sine wave signal by using an external modulation circuit to obtain a corresponding modulated signal, and send the modulated signal to an analog-to-digital converter in the flow control chip through an input port of the flow control chip;
a second signal obtaining unit 43, configured to collect the modulated signal by using an analog-to-digital converter, so as to obtain a corresponding collected signal; and
the phase difference calculating unit 44 is configured to perform phase difference calculation on the digital signal corresponding to the acquired signal and the sine wave signal by using a phase comparator circuit in the flow control chip, so as to obtain corresponding start-up flow information according to the calculated phase difference.
In the embodiment of the present invention, each unit of the flow control device for controlling the start of the chip may be implemented by a corresponding hardware or software unit, and each unit may be an independent software or hardware unit, or may be integrated into one software or hardware unit, which is not used to limit the present invention. The specific implementation of each unit may refer to the description of the second embodiment, and will not be repeated here.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (10)
1. The flow control system comprises a flow control chip and an external modulation circuit connected with an input/output port of the flow control chip, and is characterized in that the flow control chip comprises a digital-to-analog converter connected with one end of the external modulation circuit through the output port of the flow control chip, an analog-to-digital converter connected with the other end of the external modulation circuit through the input port of the flow control chip, and a phase comparator circuit respectively connected with the digital-to-analog converter and the analog-to-digital converter, wherein the digital-to-analog converter is used for continuously and uniformly generating a series of sine wave signals according to the square wave signals and with preset signal duration, the distance between adjacent pulses and sine wave frequency when the flow control chip receives square wave signals generated by a preset signal source, the external modulation circuit is used for modulating the sine wave signals generated by the digital-to-analog converter to obtain corresponding modulation signals, the analog-digital converter is used for acquiring the corresponding modulation signals to obtain corresponding phase comparison signals, and the phase comparator is used for acquiring the corresponding phase difference signals by calculating corresponding phase difference acquisition signals of the corresponding flow information of the flow control circuit, and the phase difference acquisition signals is calculated according to the corresponding phase difference acquisition signals.
2. The process control system of claim 1, wherein the analog-to-digital converter sampling rate is at least 200 times the sine wave signal frequency.
3. The process control system of claim 1, wherein the external modulation circuit is a series-connected modulation circuit of a resistor and a capacitor.
4. The process control system of claim 1, wherein the external modulation circuit is a modulation circuit having a resistor and an inductor connected in series.
5. A flow control method based on the flow control system according to any one of claims 1 to 4, characterized in that the method comprises the steps of:
when the flow control chip receives a square wave signal generated by a preset signal source, the digital-to-analog converter in the flow control chip continuously generates a string of sine wave signals according to the square wave signal and sends the sine wave signals to the external modulation circuit connected with the output port of the flow control chip;
the external modulation circuit modulates the sine wave signal to obtain a corresponding modulation signal, and sends the modulation signal to the analog-digital converter in the flow control chip through an input port of the flow control chip;
the analog-digital converter acquires the modulation signal to obtain a corresponding acquisition signal;
and the phase comparator circuit in the flow control chip calculates the phase difference of the acquired signal and the digital signal corresponding to the sine wave signal, so as to obtain corresponding starting flow information according to the calculated phase difference.
6. The method of claim 5, wherein the step of continuously generating a series of sine wave signals by the digital-to-analog converter in the process control chip based on the square wave signals comprises:
the digital-to-analog converter continuously and uniformly generates a series of sine wave signals according to the square wave signals, and the preset signal duration, the interval between adjacent pulses and the sine wave frequency.
7. The method of claim 6, wherein prior to the step of continuously generating a series of sine wave signals from the square wave signals by the digital-to-analog converter in the process control chip, the method further comprises:
the analog-to-digital converter sampling rate is set to be at least 200 times the sine wave frequency.
8. The method of claim 5, wherein the external modulation circuit is a resistor and capacitor or a series of resistor and inductor.
9. A flow control device based on the flow control system according to any one of claims 1-4, characterized in that the device comprises:
the digital-to-analog converter in the flow control chip continuously generates a string of sine wave signals according to the square wave signals when the flow control chip receives the square wave signals generated by the preset signal source, and sends the sine wave signals to the external modulation circuit connected with the output port of the flow control chip;
the signal modulation unit is used for modulating the sine wave signal by the external modulation circuit to obtain a corresponding modulation signal, and sending the modulation signal to the analog-digital converter in the flow control chip through an input port of the flow control chip;
the second signal obtaining unit is used for collecting the modulation signals by the analog-digital converter to obtain corresponding collected signals; and
and the phase difference calculation unit is used for calculating the phase difference of the digital signals corresponding to the acquired signals and the sine wave signals by the phase comparator circuit in the flow control chip so as to obtain corresponding starting flow information according to the calculated phase difference.
10. The apparatus of claim 9, wherein the first signal generation unit comprises:
the signal generation subunit is used for continuously and uniformly generating a series of sine wave signals by the digital-analog converter according to the square wave signals, and the preset signal duration, the interval between adjacent pulses and the sine wave frequency.
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| CN202010064895.0A CN111176192B (en) | 2020-01-20 | 2020-01-20 | Flow control system, method and device for controlling chip starting flow |
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