CN218158095U - Pyroelectric sensor chip calibration and test device and system - Google Patents
Pyroelectric sensor chip calibration and test device and system Download PDFInfo
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Abstract
A calibration and test device and system for a pyroelectric sensor chip comprise a calibration test module, a voltage switching module and a current detection module; the calibration test module acquires internal clock information of the pyroelectric sensor chip to be calibrated during calibration, outputs a first voltage control signal and outputs a second voltage control signal during testing; the voltage switching module outputs programming voltage when receiving a first voltage control signal and outputs test voltage with different values when receiving a second voltage control signal; the current detection module measures the working current of the pyroelectric sensor chip in real time during testing; the calibration test module is also used for generating a corresponding calibration code according to the clock information during calibration and outputting the calibration code to the chip; after the calibration is finished, the test is carried out to generate a voltage-current curve. The automatic clock calibration of the chip and the electrical parameter test of the chip can be realized through the calibration test module, the circuit is simple, and the circuit waste is reduced.
Description
Technical Field
The application relates to the technical field of electronics, in particular to a device and a system for calibrating and testing a pyroelectric sensor chip.
Background
The pyroelectric sensor chip is widely applied to intelligent induction lamps, intelligent monitoring and other occasions. The pyroelectric sensor chip can sense infrared signals radiated by an organism, different control signals are output according to the intensity of the infrared signals, and the duration of the control signals is configured through an internal register. When the clock accuracy in the pyroelectric sensor chip is low, the time accuracy of the output signal also becomes low.
In the existing scheme, when the pyroelectric sensor chip is calibrated, the calibration circuit board is connected with the oscilloscope, a clock in the pyroelectric sensor chip is grabbed, the clock frequency is manually read, the difference value between the clock frequency and a standard clock is calculated, and then a corresponding register is configured, so that the purpose of clock calibration is achieved.
SUMMERY OF THE UTILITY MODEL
In view of this, the present application provides a calibration and test device and system for a pyroelectric sensor chip, so as to solve the problem of hardware waste caused by the fact that different calibration circuit boards and test circuit boards are required for the calibration and test of the conventional pyroelectric sensor chip.
The application provides a pyroelectric sensor chip calibration and test device, which comprises a calibration test module, a voltage switching module and a current detection module; the calibration test module comprises a calibration unit, a test unit and a clock measurement unit; the calibration unit and the test unit are respectively connected with the clock measuring unit, the current detection module and the voltage switching module; the calibration unit is used for sending a calibration protocol to the pyroelectric sensor chip to be calibrated during calibration so as to control the pyroelectric sensor chip to be calibrated to output internal clock information; the clock measuring unit is connected with the pyroelectric sensor chip to be calibrated and used for receiving the internal clock information, measuring the frequency and outputting the corresponding clock frequency; the calibration unit is further configured to output a first voltage control signal during calibration, and output a calibration code to the pyroelectric sensor chip after the power supply voltage of the pyroelectric sensor chip is switched to a programming voltage to configure a corresponding register to implement clock calibration; the test unit is used for outputting a second voltage control signal during testing; the voltage switching module is connected with a power supply voltage end of the pyroelectric sensor chip and used for outputting programming voltage when receiving the first voltage control signal and outputting test voltages with different values when receiving the second voltage control signal; the current detection module is used for measuring the working current of the pyroelectric sensor chip in real time during testing; the test unit is also used for testing after the calibration is finished, receiving the test voltage and the working current and generating a voltage-current curve.
Optionally, the calibration unit or the test unit includes a protocol interface subunit, a microcontroller, and a digital isolator; the protocol interface subunit, the microcontroller and the digital isolator are connected in sequence; the protocol interface subunit is used for receiving a calibration instruction sent by an external upper computer and sending the calibration instruction to the microcontroller; the microcontroller is used for outputting an intermediate calibration protocol to the digital isolator according to the calibration instruction; the digital isolator is used for carrying out interference signal isolation on the intermediate calibration protocol so as to output the calibration protocol.
Optionally, the calibration unit or the test unit further includes an electrostatic protection subunit;
the electrostatic protection subunit is connected with the protocol interface subunit, the microcontroller and the digital isolator; the electrostatic protection subunit is used for avoiding electrostatic discharge breakdown.
Optionally, the calibration test module further includes a pin driving unit; the pin driving unit is connected with the calibration unit and the test unit and is used for providing different driving capabilities.
Optionally, the voltage switching module includes a dc-dc conversion unit, a linear voltage stabilizing unit, and a channel selecting unit;
the linear voltage stabilizing unit is connected with the direct current-direct current conversion unit and the channel selection unit, and the channel selection unit is also connected with the microcontroller;
the direct current-direct current conversion unit is used for outputting direct current supply voltage according to external voltage;
the microcontroller is used for controlling the channel selection unit to select resistors with different resistance values to be connected with the linear voltage stabilization unit;
and the linear voltage stabilizing unit is used for outputting the programming voltage or the test voltages with different values according to the direct current supply voltage and the resistors with different resistance values.
Optionally, the voltage switching module further includes a protection unit;
the protection unit is connected with both the DC-DC conversion unit and the linear voltage stabilization unit and is used for carrying out voltage clamping on the DC-DC conversion unit and the linear voltage stabilization unit.
Optionally, the test unit is further configured to send a corresponding test protocol to the pyroelectric sensor chip to be tested after the voltage-current curve is generated, and receive test data returned by the pyroelectric sensor chip, so as to implement diagnosis and discrimination of the test data.
Optionally, the calibration and test device further includes a display module;
the display module is connected with the calibration test module and used for lighting a corresponding test display point when the test data accords with preset test parameters and/or displaying corresponding information after the clock calibration is finished.
The application also provides a pyroelectric sensor chip calibration and test system, which comprises an upper computer and the pyroelectric sensor chip calibration and test device; the upper computer is connected with the pyroelectric sensor chip calibration and test device; the upper computer is used for outputting a corresponding calibration instruction or test instruction according to the input test selection signal so as to control the calibration test module to carry out clock calibration or protocol test.
According to the pyroelectric sensor chip calibration and test device and system, a calibration test module is used, and the calibration test module comprises a calibration unit, a test unit and a clock measurement unit;
the automatic clock calibration of the internal clock of the pyroelectric sensor chip can be realized, the voltage-current test of the pyroelectric sensor chip can be realized, the calibration test module can realize the calibration and the test of the pyroelectric sensor chip at the same time, the circuit is simple, and the circuit waste is reduced.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a pyroelectric sensor chip calibration and test device according to an embodiment of the present application;
fig. 2 is a schematic structural diagram of a pyroelectric sensor chip calibration and testing device according to an embodiment of the present application;
FIG. 3 is a schematic structural diagram of a pyroelectric sensor chip calibration and testing device according to an embodiment of the present application;
FIG. 4 is a schematic structural diagram of a pyroelectric sensor chip calibration and testing device according to an embodiment of the present application;
FIG. 5 is a schematic structural diagram of a pyroelectric sensor chip calibration and testing device according to an embodiment of the present application;
fig. 6 is a schematic structural diagram of a pyroelectric sensor chip calibration and test device according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application are clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application. The following embodiments and their technical features may be combined with each other without conflict.
Please refer to fig. 1, a schematic structural diagram of a calibration and test device for a pyroelectric sensor chip according to an embodiment of the present application.
The pyroelectric sensor chip calibration and test device 100 of the present embodiment includes a calibration test module 1, a voltage switching module 2, and a current detection module 3.
The calibration test module 1 is respectively connected with the voltage switching module 2 and the current detection module 3.
The calibration test module 1 is configured to obtain internal clock information of the pyroelectric sensor chip 200 to be calibrated during calibration, output a first voltage control signal, and output a second voltage control signal during testing.
The voltage switching module 2 is connected to a power supply voltage terminal of the pyroelectric sensor chip, and is configured to output a programming voltage when receiving the first voltage control signal, and output test voltages of different values when receiving the second voltage control signal.
The current detection module 3 is used for measuring the working current of the pyroelectric sensor chip in real time during testing.
The calibration test module 1 is further configured to generate a corresponding calibration code according to the internal clock information during calibration, and output the calibration code to the pyroelectric sensor chip 200 after the power supply voltage of the pyroelectric sensor chip 200 is switched to the programming voltage to configure a corresponding register to implement clock calibration; and testing after the calibration is finished, receiving the test voltage and the working current, and generating a voltage-current curve. Besides the voltage-current data, the received internal data of the chip is analyzed to judge the quality of the chip.
The pyroelectric sensor chip calibration and test device of this embodiment can realize the automatic clock calibration of the internal clock of pyroelectric sensor chip through calibration test module 1, can realize the voltage-current test and the chip internal data test of pyroelectric sensor chip simultaneously, need not artifical whole journey participation among the clock calibration process, calibration accuracy and efficiency are all higher, and calibration test module can realize the calibration and the test of pyroelectric sensor chip simultaneously, and the circuit is simple, and it is extravagant to reduce the circuit.
Please refer to fig. 2, a schematic structural diagram of a pyroelectric sensor chip calibration and testing device according to an embodiment of the present application.
The pyroelectric sensor chip calibration and test device of this embodiment further includes a display module 4 on the basis of the above embodiments.
The display module 4 is connected with the calibration test module 1 and used for lighting a corresponding test display point when the test data accords with preset test parameters, and/or displaying corresponding information after the clock calibration is finished. The calibration and test results can be visually displayed through the display module 4, and the degree of automatic test is improved. The display module 4 comprises a display and an indicator light, the calibration test module 1 comprises a microcontroller, the microcontroller is connected with the display or the indicator light, and when the test data accord with preset test parameters, the microcontroller controls to light the corresponding indicator light or controls the display to display corresponding information. Or the microcontroller controls the display or the indicator light to display corresponding information after the clock is calibrated, and the calibration and test results can be visually displayed.
Please refer to fig. 3, a schematic structural diagram of a pyroelectric sensor chip calibration and testing device according to an embodiment of the present application.
In the device for calibrating and testing the pyroelectric sensor chip of the embodiment, the calibration test module 1 comprises a calibration unit 11, a test unit 12 and a clock measurement unit 13; the calibration unit 11 is connected with the clock measurement unit 13; the test unit 12 is connected with the current detection module; the calibration unit 11 is configured to send a calibration protocol to the pyroelectric sensor chip to be calibrated during calibration to control the pyroelectric sensor chip to be calibrated to output internal clock information and control the pyroelectric sensor chip to be calibrated to output the internal clock information; the clock measuring unit 13 is connected to the pyroelectric sensor chip to be calibrated, and is configured to receive internal clock information of the pyroelectric sensor chip to be calibrated, perform frequency measurement, and output a corresponding clock frequency; the calibration unit 11 is further configured to output a first voltage control signal during calibration, and output a calibration code to the pyroelectric sensor chip after the power supply voltage of the pyroelectric sensor chip is switched to a programming voltage to configure a corresponding register to implement clock calibration; the test unit 12 is configured to output a second voltage control signal during testing, perform testing after calibration is completed, receive the test voltage and the working current, and generate a voltage-current curve.
The clock measurement unit 13 comprises a frequency measurement device. The current detection module 3 includes a current detection sensor.
The calibration unit sends a calibration protocol during calibration and acquires the pyroelectric sensor chip to be calibrated so as to control the pyroelectric sensor chip to be calibrated to output internal clock information, and then the clock measurement unit receives the clock information and carries out frequency measurement so as to output corresponding clock frequency; calculating a corresponding calibration code according to the difference value between the clock frequency and the standard clock frequency, and performing register configuration under the programming voltage to realize clock calibration, so that the accuracy of the clock calibration is improved; the test unit performs voltage-current test under the test voltage, so that the accuracy of the test result can be improved.
The pyroelectric sensor chip calibration and test device of this embodiment can realize full automation calibration, has improved work efficiency greatly, and calibration test integration, hardware circuit cost are lower, can guarantee the calibration accuracy, and manual participation is less, has reduced the loss of chip.
Please refer to fig. 4, a schematic structural diagram of a pyroelectric sensor chip calibration and testing device according to an embodiment of the present application.
In the device for calibrating and testing the pyroelectric sensor chip of this embodiment, the calibration unit 11 includes a protocol interface subunit 111, a microcontroller 112, and a digital isolator 113; the protocol interface subunit 111, the microcontroller 112 and the digital isolator 113 are connected in sequence; the protocol interface subunit 111 is configured to receive a calibration instruction sent by an external upper computer and send the calibration instruction to the microcontroller 112; the microcontroller 112 is configured to output an intermediate calibration protocol to the digital isolator 113 according to the calibration instruction; the digital isolator 113 is configured to perform interference signal isolation on the intermediate calibration protocol to output the calibration protocol. The protocol interface subunit 111 can realize communication with the outside, improve the control convenience of the test, and improve the accuracy of the test result by isolating the interference signal through the digital isolator 113.
Further, the calibration unit 11 further includes an electrostatic protection subunit 114; the electrostatic protection subunit 114 is connected to the protocol interface subunit 111, the microcontroller 112, and the digital isolator 113; the electrostatic protection subunit 114 is used to avoid electrostatic discharge breakdown, protect circuit devices, and reduce the risk that the measured pyroelectric sensor chip is damaged by ESD (electrostatic discharge).
Specifically, the protocol interface subunit 111 is used for the calibration unit to communicate with the upper computer, and different interface modules can be flexibly selected according to different communication protocols (such as a UART protocol). The protocol interface subunit 11 sends the calibration instruction sent by the upper computer to the microcontroller 112, and after the microcontroller 112 analyzes the calibration instruction, the calibration protocol is sent to the pyroelectric sensor chip to be calibrated through the digital isolator 113. Digital isolator 113 functions to perform different level matching and isolate some uncertain external interference signals. In addition, an electrostatic protection subunit is further disposed in the calibration unit 11, so as to prevent ESD breakdown from damaging other modules. The test unit is similar to the calibration unit, and is not described herein again, and in addition, a pin driving module is additionally added in the test unit in consideration of different driving capabilities of the pins.
Please refer to fig. 5, a schematic structural diagram of a pyroelectric sensor chip calibration and testing device according to an embodiment of the present application.
In the device for calibrating and testing the pyroelectric sensor chip of the present embodiment, the voltage switching module 2 includes a dc-dc conversion unit 21, a linear voltage stabilization unit 22, and a channel selection unit 23; the linear voltage stabilizing unit 22 is connected to both the dc-dc converting unit 21 and the channel selecting unit 23, and the channel selecting unit 23 is further connected to the microcontroller; the dc-dc conversion unit 21 is configured to output a dc supply voltage according to an external voltage; the microcontroller is used for controlling the channel selection unit 23 to select resistors with different resistance values to be connected with the linear voltage stabilizing unit 22; the linear voltage stabilizing unit 22 is configured to output the programming voltage or the test voltages with different values according to the dc supply voltage and the resistors with different resistance values. The DC-DC conversion unit 21 includes a DC-DC converter, and the linear regulator unit 22 includes an LDO (low dropout linear regulator).
Further, the voltage switching module 2 further includes a protection unit 24; the protection unit 24 is connected to both the dc-dc conversion unit 21 and the linear voltage stabilization unit 22, and is configured to clamp voltages of the dc-dc conversion unit 21 and the linear voltage stabilization unit 22.
Specifically, since different voltages are required for calibration and test of the pyroelectric sensor chip, and a "sweep" operation needs to be performed during the test process, the voltage switching module 2 is an indispensable module. In order to improve the power supply efficiency and reduce the heat loss, the external power supply is first connected to the internal dc-dc conversion unit 21, and the dc-dc conversion unit 21 outputs a voltage to supply power to the linear regulator unit 22, where the linear regulator unit 22 includes an LDO (low voltage linear regulator) unit in this embodiment. The microcontroller controls the channel selection unit 23 to select resistors with different resistance values to be connected with the LDO unit, so that the LDO unit outputs different voltages. In addition, due to the particularity of the voltage switching module 2, a certain protection needs to be provided for the voltage switching module, so that a protection unit 24 is added, and the protection unit 24 is a TVS tube or the like. The channel selection unit 23 includes a channel selector.
Please refer to fig. 6, a schematic structural diagram of a pyroelectric sensor chip calibration and testing device according to an embodiment of the present application.
In the pyroelectric sensor chip calibration and test device of the embodiment, the pyroelectric sensor chip calibration and test device is connected with the upper computer 300, the upper computer 300 sends a calibration instruction to control the calibration unit 11 to calibrate a clock, and the upper computer 300 sends a test instruction to control the test unit 12 to test specific protocol data. According to the scheme, the chip can be accurately calibrated without a complicated and expensive calibration system. Meanwhile, the test unit is integrated on the board, the performance of the pyroelectric sensor chip can be tested, the cost is low, the efficiency is high, and the device is very suitable for calibration and test of small-batch pyroelectric sensor chips in a laboratory.
The calibration and test process of the pyroelectric sensor chip calibration and test device in fig. 6 is specifically described as follows:
the working steps of the device for calibrating and testing the pyroelectric sensor chip are as follows:
step 1: after the pyroelectric sensor chip with calibration and test is connected with the pyroelectric sensor chip calibration and test device, the calibration work of the pyroelectric sensor chip is firstly needed. And clicking a calibration option on the interface of the upper computer 300, and sending a calibration instruction to the calibration test module 1 by the upper computer, wherein the calibration test module 1 forms a calibration/test integrated unit. The calibration unit 11 in the calibration test module 1 sends a calibration protocol to the pyroelectric sensor chip to be calibrated, and the pyroelectric sensor chip outputs an internal clock to the clock measurement unit 13 in the calibration test module 1 after receiving the calibration protocol. The clock measuring unit 13 measures the frequency of the received clock, and the measurement precision is adjustable.
And 2, step: the clock measuring unit 13 transmits the clock frequency obtained by the test to the calibration unit 11, and the calibration unit 11 calculates the difference between the actual measurement clock frequency and the standard clock frequency, and specifically, the corresponding calibration code can be calculated by a table lookup calculation method. And then, the power supply voltage of the pyroelectric sensor chip is switched into a programming voltage by controlling the voltage switching module 2, and the calibration code is programmed into the pyroelectric sensor chip, so that the clock calibration process is finished. After the calibration is completed, the corresponding calibration display in the display module 4 is lighted.
And step 3: and clicking a test option on the interface of the upper computer 300, and controlling the voltage switching module 2 by the calibration test module 1 to switch the voltage to the lowest working voltage of the chip, and then controlling the working voltage of the pyroelectric sensor chip to be gradually raised to the highest working voltage in a stepping mode. The current detection module 3 can measure the working current of the pyroelectric sensor chip at the moment in real time, and transmit the information of the current magnitude to the upper computer 300, and the upper computer 300 can generate a corresponding V-I (voltage-current) curve to check whether the working current of the pyroelectric sensor chip is normal or not.
And 4, step 4: after the corresponding V-I curve is generated, the test unit 12 sends a corresponding test protocol, the pyroelectric sensor chip outputs corresponding test data, the test data is transmitted to the calibration test module 1, the calibration test module 1 diagnoses and determines the test data, and if the test data conforms to preset test parameters, a corresponding test display in the display module 4 is turned on. In addition, the calibration test module 1 can also transmit corresponding test data to the upper computer 300, and the interface of the upper computer 300 can be displayed more visually.
The application also provides a pyroelectric sensor chip calibration and test system, which comprises an upper computer and the pyroelectric sensor chip calibration and test device; the upper computer is connected with the pyroelectric sensor chip calibration and test device; the upper computer is used for outputting a corresponding calibration instruction or test instruction according to the input test selection signal so as to control the calibration test module to carry out clock calibration or protocol test.
Can be to calibration test module long-range send instruction through the host computer, control pyroelectric sensor chip calibration and testing arrangement and calibrate and test, realize remote control pyroelectric sensor chip calibration and testing arrangement, improve the application convenience.
The above-mentioned embodiments are only examples of the present application, and not intended to limit the scope of the present application, and all equivalent structures or equivalent flow transformations made by the contents of the specification and the drawings, such as the combination of technical features between the embodiments and the direct or indirect application to other related technical fields, are also included in the scope of the present application.
Claims (9)
1. A pyroelectric sensor chip calibration and test device is characterized by comprising a calibration test module, a voltage switching module and a current detection module;
the calibration test module comprises a calibration unit, a test unit and a clock measurement unit;
the calibration unit and the test unit are respectively connected with the clock measurement unit, the current detection module and the voltage switching module;
the calibration unit is used for sending a calibration protocol to the pyroelectric sensor chip to be calibrated during calibration so as to control the pyroelectric sensor chip to be calibrated to output internal clock information;
the clock measuring unit is connected with the pyroelectric sensor chip to be calibrated and used for receiving the internal clock information, measuring the frequency and outputting the corresponding clock frequency;
the calibration unit is further configured to output a first voltage control signal during calibration, and output a calibration code to the pyroelectric sensor chip after the power supply voltage of the pyroelectric sensor chip is switched to a programming voltage to configure a corresponding register to implement clock calibration;
the test unit is used for outputting a second voltage control signal during testing;
the voltage switching module is connected with a power supply voltage end of the pyroelectric sensor chip and used for outputting programming voltage when receiving the first voltage control signal and outputting test voltages with different values when receiving the second voltage control signal;
the current detection module is used for measuring the working current of the pyroelectric sensor chip in real time during testing;
the test unit is also used for testing after the calibration is finished, receiving the test voltage and the working current and generating a voltage-current curve.
2. The pyroelectric sensor chip calibration and test device of claim 1, wherein the calibration unit or the test unit comprises a protocol interface subunit, a microcontroller and a digital isolator;
the protocol interface subunit, the microcontroller and the digital isolator are connected in sequence;
the protocol interface subunit is used for receiving a calibration instruction sent by an external upper computer and sending the calibration instruction to the microcontroller;
the microcontroller is used for outputting an intermediate calibration protocol to the digital isolator according to the calibration instruction;
the digital isolator is used for isolating interference signals of the intermediate calibration protocol so as to output the calibration protocol.
3. The pyroelectric sensor chip calibration and test device of claim 2, wherein the calibration unit or the test unit further comprises an electrostatic protection subunit;
the electrostatic protection subunit is connected with the protocol interface subunit, the microcontroller and the digital isolator;
the electrostatic protection subunit is used for avoiding electrostatic discharge breakdown.
4. The pyroelectric sensor chip calibration and test device according to claim 2, wherein the calibration test module further comprises a pin driving unit;
the pin driving unit is connected with the calibration unit and the test unit and used for providing different driving capabilities.
5. The pyroelectric sensor chip calibration and test device of claim 2, wherein the voltage switching module comprises a dc-dc conversion unit, a linear voltage stabilization unit and a channel selection unit;
the linear voltage stabilizing unit is connected with the direct current-direct current conversion unit and the channel selection unit, and the channel selection unit is also connected with the microcontroller;
the direct current-direct current conversion unit is used for outputting direct current supply voltage according to external voltage;
the microcontroller is used for controlling the channel selection unit to select resistors with different resistance values to be connected with the linear voltage stabilization unit;
and the linear voltage stabilizing unit is used for outputting the programming voltage or the test voltages with different values according to the direct current supply voltage and the resistors with different resistance values.
6. The pyroelectric sensor chip calibration and testing device of claim 5, wherein the voltage switching module further comprises a protection unit;
the protection unit is connected with both the DC-DC conversion unit and the linear voltage stabilization unit and is used for carrying out voltage clamping on the DC-DC conversion unit and the linear voltage stabilization unit.
7. The device for calibrating and testing a pyroelectric sensor chip as claimed in claim 1, wherein the testing unit is further configured to send a corresponding testing protocol to the pyroelectric sensor chip to be tested after the voltage-current curve is generated, and receive test data returned by the pyroelectric sensor chip, so as to implement diagnosis and determination of the test data.
8. The pyroelectric sensor chip calibration and test device of claim 7, wherein said calibration and test device further comprises a display module;
the display module is connected with the calibration test module and used for lighting a corresponding test display point when the test data accords with preset test parameters and/or displaying corresponding information after the clock calibration is finished.
9. A pyroelectric sensor chip calibration and test system, characterized by comprising an upper computer and a pyroelectric sensor chip calibration and test device according to any one of claims 1 to 8; the upper computer is connected with the pyroelectric sensor chip calibration and test device;
the upper computer is used for outputting a corresponding calibration instruction or test instruction according to the input test selection signal so as to control the calibration test module to carry out clock calibration or protocol test.
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