CN115754816A - Electronic device and cable connection detection method - Google Patents

Abstract

The embodiment of the application provides an electronic device and a cable connection detection method, wherein the electronic device comprises a main board and an auxiliary board, a plurality of first connectors are arranged on the main board, a plurality of second connectors are arranged on the auxiliary board, and the plurality of first connectors correspond to the plurality of second connectors one to one; a Complex Programmable Logic Device (CPLD) is arranged on the mainboard, and one or more signal distinguishing components are arranged on the auxiliary board; signal discriminating means for obtaining different types of signals, the types comprising frequency and/or duty cycle; the signal distinguishing component is used for respectively outputting different types of signals to the plurality of second connectors, wherein the types of the signals accessed by the different second connectors are different; the CPLD is used for determining whether the cable between the main board and the auxiliary board is correctly connected according to the type of the signal of each first connector in the plurality of first connectors. By adopting the embodiment of the application, whether the cable connection is correct can be conveniently and quickly detected.

Description

An electronic device and cable connection detection method

technical field

The present application relates to the field of computer technology, in particular to an electronic device and a cable connection detection method.

Background technique

With the continuous development of the computing industry, the rate of data communication is getting faster and faster. In order to meet the higher signal transmission rate requirements, more and more high-speed cables are used between the main board and the backplane inside the server, and between the main board and the riser card. Since the interfaces are mostly consistent, it is easy to connect the wrong cables during the assembly process, resulting in problems in data transmission.

Therefore, how to detect whether the cables are connected incorrectly is a technical problem to be solved by those skilled in the art.

Contents of the invention

The embodiment of the present application discloses an electronic device and a cable connection detection method, which can conveniently and quickly detect whether the cable connection is correct.

In a first aspect, an embodiment of the present application provides an electronic device, the electronic device includes a main board and a sub-board, a plurality of first connectors are arranged on the main board, and a plurality of second connectors are arranged on the sub-board, The plurality of first connectors correspond to the plurality of second connectors one by one; a complex programmable logic device CPLD is disposed on the main board, and one or more signal distinguishing components are disposed on the sub-board;

The signal distinguishing component is used to obtain different types of signals, wherein the types include frequency and/or duty cycle;

The signal distinguishing component is configured to respectively output the signals of different types to the plurality of second connectors, wherein the types of signals connected to different second connectors are different;

The CPLD is used to determine whether the cable between the main board and the sub-board is correctly connected according to the signal type of each first connector in the plurality of first connectors.

Using the above method, by setting the signal distinguishing component on the sub-board, different types of signals corresponding to different second connectors can be divided, and the CPLD on the main board can be determined based on the signal types corresponding to different second connectors The signal type that should be received by the corresponding first connector, the CPLD compares the signal type that each first connector should receive with the signal type actually received by the first connector, if the two are different then It can be determined that the cable connected between the main board and the sub-board is a wrong connection, and if the two are the same, it can be determined that the cable connected between the main board and the sub-board is a correct connection. Based on this idea, it is possible to quickly and accurately detect whether the cable is connected correctly.

With reference to the first aspect, in a possible implementation manner of the first aspect, the type of signal connected to the second connector corresponding to each first connector among the plurality of first connectors is set in the In the CPLD; if it is detected that the signal type of the first connector is the target type, then the cable connected to the sub-board on the first connector is connected correctly, wherein the target type is the target type The type of signal connected to the second connector corresponding to the first connector.

With reference to the first aspect, or any of the foregoing possible implementation manners of the first aspect, in yet another possible implementation manner of the first aspect, the subboard includes a backplane and/or a riser card.

In combination with the first aspect, or any of the above possible implementations of the first aspect, in another possible implementation of the first aspect, the type is specifically frequency, and the sub-board further includes a crystal oscillator; In terms of obtaining different types of signals, the signal distinguishing component is specifically configured to perform frequency division processing on the fundamental frequency signal of the crystal oscillator to obtain signals of different frequencies.

In combination with the first aspect, or any of the above possible implementations of the first aspect, in another possible implementation of the first aspect, the fundamental frequency signal of the crystal oscillator is also used to output to the multiple A second connector of the second connectors. It can be understood that using the fundamental frequency signal of the crystal oscillator as an input can reduce the pressure on the signal distinguishing components, thereby reducing the number of deployed signal distinguishing components to the greatest extent, which is beneficial to save space and cost.

引脚。通过这种连接方式，使得双D触发器能够实现分频功能，降低了设计的复杂度。In combination with the first aspect, or any of the above possible implementation manners of the first aspect, in yet another possible implementation manner of the first aspect, the signal distinguishing component includes a D flip-flop, and the D flip-flop The D pin is connected to the D flip-flop's

pin. Through this connection mode, the double D flip-flop can realize the frequency division function, which reduces the complexity of the design.

In combination with the first aspect, or any of the above possible implementations of the first aspect, in yet another possible implementation of the first aspect, the D flip-flop is specifically a double D flip-flop, and the sub-board A signal distinguishing component is specifically deployed on the board, and the signal distinguishing component is a first dual D flip-flop, and the 1CP pin of the first dual D flip-flop is used to connect the fundamental frequency signal of the crystal oscillator, and the first dual D flip-flop A branch of the frequency division signal output by the 1Q pin of the D flip-flop is used to output to a second connector in the plurality of second connectors, and the output of the 1Q pin of the first double D flip-flop Another branch of the frequency division signal is used to output to the 2CP pin of the first double D flip-flop, and the frequency division signal output by the 2Q pin of the first double D flip-flop is used to output to the multiple A second connector of the second connectors.

In combination with the first aspect, or any of the above possible implementations of the first aspect, in yet another possible implementation of the first aspect, the D flip-flop is specifically a double D flip-flop, and the sub-board A plurality of signal distinguishing components are specifically deployed, and the plurality of signal distinguishing components are specifically a plurality of double-D flip-flops, and the plurality of double-D flip-flops include a second double-D flip-flop and a third double-D flip-flop, so The second double D flip-flop is connected in cascade with the third double D flip-flop;

The 1CP pin of the second double D flip-flop is used to connect the base frequency signal of the crystal oscillator, and a branch of the frequency division signal output by the 1Q pin of the second double D flip-flop is used to output to the multiple One of the second connectors, the other branch of the frequency division signal output by the 1Q pin of the second double D flip-flop is used to output to the 2CP pin of the second double D flip-flop Pin, the frequency division signal output by the 2Q pin of the second double D flip-flop is used to output to a second connector in the plurality of second connectors;

The 1CP pin of the third double D flip-flop is used to connect the 2Q pin of the second double D flip-flop, and a branch of the frequency division signal output by the 1Q pin of the third double D flip-flop is used for output to one of the plurality of second connectors, and another branch of the frequency division signal output by the 1Q pin of the third dual D flip-flop is used to output to the third dual D The 2CP pin of the flip-flop, the frequency division signal output by the 2Q pin of the third dual D flip-flop is used to output to one second connector among the plurality of second connectors.

It can be understood that any required number of signals with different frequencies can be divided by cascading.

With reference to the first aspect, or any of the foregoing possible implementation manners of the first aspect, in yet another possible implementation manner of the first aspect, the electronic device further includes a baseboard management controller BMC, and the CPLD further It is used for reporting the detection result of whether the cable is connected correctly to the BMC, and the BMC is used for outputting prompt information to prompt that the cable connection between the main board and the sub-board is wrong. It can be understood that through this prompt mechanism, the user can quickly discover the problem and remedy it in time, so as to correct the wrong connection of the cable between the main board and the sub board as early as possible.

In the second aspect, the embodiment of the present application provides a sub-board, the sub-board is configured with a plurality of second connectors, and the plurality of second connectors correspond to the plurality of first connectors on the main board one by one. in:

The signal distinguishing component is used to obtain different types of signals, wherein the types include frequency and/or duty cycle;

The signal distinguishing component is configured to respectively output the signals of different types to the plurality of second connectors, wherein the types of signals connected to different second connectors are different;

The plurality of second connectors are used to transmit signals to the plurality of first connectors of the motherboard through cables.

Using the above method, by setting the signal distinguishing component on the sub-board, different types of signals corresponding to different second connectors can be divided, and the CPLD on the main board can be determined based on the signal types corresponding to different second connectors The signal type that should be received by the corresponding first connector, the CPLD compares the signal type that each first connector should receive with the signal type actually received by the first connector, if the two are different then It can be determined that the cable connected between the main board and the sub-board is a wrong connection, and if the two are the same, it can be determined that the cable connected between the main board and the sub-board is a correct connection. Based on this idea, it is possible to quickly and accurately detect whether the cable is connected correctly.

With reference to the second aspect, in a possible implementation manner of the second aspect, the subboard includes a backplane and/or a riser card.

In combination with the second aspect, or any of the above-mentioned possible implementation manners of the second aspect, in another possible implementation manner of the second aspect, the type is specifically frequency, and the sub-board further includes a crystal oscillator; In terms of different types of signals, the signal distinguishing component is specifically configured to perform frequency division processing on the fundamental frequency signal of the crystal oscillator to obtain signals of different frequencies.

With reference to the second aspect, or any of the above possible implementation manners of the second aspect, in yet another possible implementation manner of the second aspect, the fundamental frequency signal of the crystal oscillator is also used to output to the multiple first A second connector of the two connectors. It can be understood that using the fundamental frequency signal of the crystal oscillator as an input can reduce the pressure on the signal distinguishing components, thereby reducing the number of deployed signal distinguishing components to the greatest extent, which is beneficial to save space and cost.

引脚。通过这种连接方式，使得双D触发器能够实现分频功能，降低了设计的复杂度。With reference to the second aspect, or any of the above possible implementation manners of the second aspect, in yet another possible implementation manner of the second aspect, the signal distinguishing component includes a D flip-flop, and the D flip-flop of the D flip-flop pin connected to the D flip-flop's

pin. Through this connection mode, the double D flip-flop can realize the frequency division function, which reduces the complexity of the design.

With reference to the second aspect, or any of the above possible implementation manners of the second aspect, in yet another possible implementation manner of the second aspect, the D flip-flop is specifically a double D flip-flop, and the sub-board A signal distinguishing component is specifically deployed, and the signal distinguishing component is a first double D flip-flop, and the 1CP pin of the first double D flip-flop is used to connect the fundamental frequency signal of the crystal oscillator, and the first double D A branch of the frequency-division signal output by the 1Q pin of the flip-flop is used to output to a second connector in the plurality of second connectors, and the divided signal output by the 1Q pin of the first double D flip-flop The other branch of the frequency signal is used to output to the 2CP pin of the first double D flip-flop, and the frequency division signal output by the 2Q pin of the first double D flip-flop is used to output to the plurality of first A second connector of the two connectors.

With reference to the second aspect, or any of the above possible implementation manners of the second aspect, in yet another possible implementation manner of the second aspect, the D flip-flop is specifically a double D flip-flop, and the sub-board A plurality of signal distinguishing components are specifically deployed, and the plurality of signal distinguishing components are specifically a plurality of double D flip-flops, and the plurality of double D flip-flops include a second double D flip-flop and a third double D flip-flop, the The second double D flip-flop is connected in cascade with the third double D flip-flop;

The 1CP pin of the second double D flip-flop is used to connect the base frequency signal of the crystal oscillator, and a branch of the frequency division signal output by the 1Q pin of the second double D flip-flop is used to output to the multiple One of the second connectors, the other branch of the frequency division signal output by the 1Q pin of the second double D flip-flop is used to output to the 2CP pin of the second double D flip-flop Pin, the frequency division signal output by the 2Q pin of the second double D flip-flop is used to output to a second connector in the plurality of second connectors;

The 1CP pin of the third double D flip-flop is used to connect the 2Q pin of the second double D flip-flop, and a branch of the frequency division signal output by the 1Q pin of the third double D flip-flop is used for output to one of the plurality of second connectors, and another branch of the frequency division signal output by the 1Q pin of the third dual D flip-flop is used to output to the third dual D The 2CP pin of the flip-flop, the frequency division signal output by the 2Q pin of the third dual D flip-flop is used to output to one second connector among the plurality of second connectors.

It can be understood that any required number of signals with different frequencies can be divided by cascading.

In a third aspect, the embodiment of the present application provides a cable connection detection method, which is applied to an electronic device, and the electronic device includes a main board and a sub-board, the main board is configured with a plurality of first connectors, and the sub-board A plurality of second connectors are configured, and the plurality of first connectors are in one-to-one correspondence with the plurality of second connectors; a complex programmable logic device CPLD is deployed on the main board, and a complex programmable logic device CPLD is deployed on the sub-board. There are one or more signal distinguishing components, the method comprising:

Different types of signals are obtained by the signal distinguishing component, and the types include frequency and/or duty cycle. The different types of signals are respectively used to be output to the plurality of second connectors, and different second connectors are connected to The type of incoming signal is different;

Whether the cable between the main board and the sub-board is correctly connected is determined by the CPLD according to the signal type of each first connector in the plurality of first connectors.

Using the above method, by setting the signal distinguishing component on the sub-board, different types of signals corresponding to different second connectors can be divided, and the CPLD on the main board can be determined based on the signal types corresponding to different second connectors The signal type that should be received by the corresponding first connector, the CPLD compares the signal type that each first connector should receive with the signal type actually received by the first connector, if the two are different then It can be determined that the cable connected between the main board and the sub-board is a wrong connection, and if the two are the same, it can be determined that the cable connected between the main board and the sub-board is a correct connection. Based on this idea, it is possible to quickly and accurately detect whether the cable is connected correctly.

With reference to the third aspect, or any of the above possible implementation manners of the third aspect, in yet another possible implementation manner of the third aspect, each of the multiple first connectors corresponds to The type of the signal connected to the second connector is set in the CPLD; if it is detected that the type of the signal of the first connector is the target type, then the first connector is connected to the secondary The cable connection of the board is correct, wherein the target type is the type of the signal connected to the second connector corresponding to the first connector.

With reference to the third aspect, in a possible implementation manner of the third aspect, the subboard includes a backplane and/or a riser card.

In combination with the third aspect, or any of the above-mentioned possible implementation manners of the third aspect, in another possible implementation manner of the third aspect, the type is specifically frequency, and the sub-board further includes a crystal oscillator; In terms of different types of signals, the signal distinguishing component is specifically configured to perform frequency division processing on the fundamental frequency signal of the crystal oscillator to obtain signals of different frequencies.

With reference to the third aspect, or any of the above possible implementation manners of the third aspect, in yet another possible implementation manner of the third aspect, the fundamental frequency signal of the crystal oscillator is also used to output to the multiple first A second connector of the two connectors. It can be understood that using the fundamental frequency signal of the crystal oscillator as an input can reduce the pressure on the signal distinguishing components, thereby reducing the number of deployed signal distinguishing components to the greatest extent, which is beneficial to save space and cost.

引脚。通过这种连接方式，使得双D触发器能够实现分频功能，降低了设计的复杂度。With reference to the third aspect, or any of the above possible implementation manners of the third aspect, in yet another possible implementation manner of the third aspect, the signal distinguishing component includes a D flip-flop, and the D of the D flip-flop pin connected to the D flip-flop's

pin. Through this connection mode, the double D flip-flop can realize the frequency division function, which reduces the complexity of the design.

With reference to the third aspect, or any of the above possible implementation manners of the third aspect, in another possible implementation manner of the third aspect, the D flip-flop is specifically a double D flip-flop, and the sub-board A signal distinguishing component is specifically deployed, and the signal distinguishing component is a first double D flip-flop, and the 1CP pin of the first double D flip-flop is used to connect the fundamental frequency signal of the crystal oscillator, and the first double D A branch of the frequency-division signal output by the 1Q pin of the flip-flop is used to output to a second connector in the plurality of second connectors, and the divided signal output by the 1Q pin of the first double D flip-flop The other branch of the frequency signal is used to output to the 2CP pin of the first double D flip-flop, and the frequency division signal output by the 2Q pin of the first double D flip-flop is used to output to the plurality of first A second connector of the two connectors.

With reference to the third aspect, or any of the above possible implementation manners of the third aspect, in another possible implementation manner of the third aspect, the D flip-flop is specifically a double D flip-flop, and the sub-board A plurality of signal distinguishing components are specifically deployed, and the plurality of signal distinguishing components are specifically a plurality of double D flip-flops, and the plurality of double D flip-flops include a second double D flip-flop and a third double D flip-flop, the The second double D flip-flop is connected in cascade with the third double D flip-flop;

The 1CP pin of the second double D flip-flop is used to connect the base frequency signal of the crystal oscillator, and a branch of the frequency division signal output by the 1Q pin of the second double D flip-flop is used to output to the multiple One of the second connectors, the other branch of the frequency division signal output by the 1Q pin of the second double D flip-flop is used to output to the 2CP pin of the second double D flip-flop Pin, the frequency division signal output by the 2Q pin of the second double D flip-flop is used to output to a second connector in the plurality of second connectors;

The 1CP pin of the third double D flip-flop is used to connect the 2Q pin of the second double D flip-flop, and a branch of the frequency division signal output by the 1Q pin of the third double D flip-flop is used for output to one of the plurality of second connectors, and another branch of the frequency division signal output by the 1Q pin of the third dual D flip-flop is used to output to the third dual D The 2CP pin of the flip-flop, the frequency division signal output by the 2Q pin of the third dual D flip-flop is used to output to one second connector among the plurality of second connectors.

It can be understood that any required number of signals with different frequencies can be divided by cascading.

With reference to the third aspect, or any of the foregoing possible implementation manners of the third aspect, in yet another possible implementation manner of the third aspect, the electronic device further includes a baseboard management controller BMC, and the CPLD also uses In order to report the detection result of whether the cable is connected correctly to the BMC, the BMC is used to output prompt information to prompt that the cable connection between the main board and the sub-board is wrong.

It can be understood that through this prompt mechanism, the user can quickly discover the problem and remedy it in time, so as to correct the wrong connection of the cable between the main board and the sub board as early as possible.

In a fourth aspect, the embodiment of the present application provides a cable connection detection method, the method is applied to the sub-board, the sub-board is configured with a plurality of second connectors, and the plurality of second connectors are connected to the main board. Multiple first connectors correspond one to one, wherein:

Obtaining different types of signals through the signal distinguishing component, wherein the types include frequency and/or duty cycle;

Outputting the different types of signals to the plurality of second connectors respectively, wherein the types of signals connected to different second connectors are different;

The plurality of second connectors are used to transmit signals to the plurality of first connectors of the motherboard through cables.

Using the above method, by setting the signal distinguishing component on the sub-board, different types of signals corresponding to different second connectors can be divided, and the CPLD on the main board can be determined based on the signal types corresponding to different second connectors The signal type that should be received by the corresponding first connector, the CPLD compares the signal type that each first connector should receive with the signal type actually received by the first connector, if the two are different then It can be determined that the cable connected between the main board and the sub-board is a wrong connection, and if the two are the same, it can be determined that the cable connected between the main board and the sub-board is a correct connection. Based on this idea, it is possible to quickly and accurately detect whether the cable is connected correctly.

With reference to the fourth aspect, in a possible implementation manner of the fourth aspect, the subboard includes a backplane and/or a riser card.

In combination with the fourth aspect, or any of the above-mentioned possible implementation manners of the fourth aspect, in another possible implementation manner of the fourth aspect, the type is specifically frequency, and the sub-board further includes a crystal oscillator; In terms of different types of signals, the signal distinguishing component is specifically configured to perform frequency division processing on the fundamental frequency signal of the crystal oscillator to obtain signals of different frequencies.

With reference to the fourth aspect, or any of the above possible implementation manners of the fourth aspect, in yet another possible implementation manner of the fourth aspect, the fundamental frequency signal of the crystal oscillator is also used to output to the multiple first A second connector of the two connectors. It can be understood that using the fundamental frequency signal of the crystal oscillator as an input can reduce the pressure on the signal distinguishing components, thereby reducing the number of deployed signal distinguishing components to the greatest extent, which is beneficial to save space and cost.

引脚。通过这种连接方式，使得双D触发器能够实现分频功能，降低了设计的复杂度。With reference to the fourth aspect, or any of the above possible implementation manners of the fourth aspect, in yet another possible implementation manner of the fourth aspect, the signal distinguishing component includes a D flip-flop, and the D flip-flop of the D flip-flop pin connected to the D flip-flop's

pin. Through this connection mode, the double D flip-flop can realize the frequency division function, which reduces the complexity of the design.

Description of drawings

The accompanying drawings used in the embodiments of the present application are introduced below.

FIG. 1 is a schematic structural diagram of an electronic device provided in an embodiment of the present application;

FIG. 2 is a schematic structural diagram of another electronic device provided by an embodiment of the present application;

Fig. 3 is a flow chart of a method for cable connection detection provided by an embodiment of the present application.

Detailed ways

Embodiments of the present application are described below with reference to the drawings in the embodiments of the present application.

Please refer to FIG. 1. FIG. 1 is a schematic structural diagram of an electronic device 10 provided by an embodiment of the present application. The electronic device 10 includes a main board 11 and a sub-board 12. The main board 11 is provided with a plurality of first connectors 110. A plurality of second connectors 120 are arranged on the sub-board, and the plurality of first connectors 110 correspond 120 to the plurality of second connectors; for example, if the main board 11 has A1, B1, There are 4 first connectors C1 and D1, and there are 4 second connectors A2, B2, C2, and D2 on the sub-board 12 in sequence. Among them, the interface specifications of different first connectors can be the same or different. The interface specifications of the second connectors can be the same or different. In addition, the first connector A1 corresponds to the second connector A2, the first connector B1 corresponds to the second connector B2, the first connector C1 corresponds to the second connector C2, and the first connector D1 corresponds to the second connector device D2 corresponds. It should be noted that the correspondence between the first connector A1 and the second connector A2 specifically means that A1 is used to connect with A2 through a cable, although the interface specifications of the first connector A1 and the first connector B1 are the same Under normal circumstances, B1 can also be connected to A2 through a cable, but because B1 and A2 are not preset to correspond, this connection cannot achieve the expected function. Generally speaking, if a certain first connector is connected to a certain The second connector does not correspond, and the connection between the certain first connector and the certain second connector is established through a cable, it is considered that the cable connection is wrong, that is, only the corresponding first connector and the certain second connector are connected. Only when a connection is established between the second connectors through a cable is it considered that the cable is correctly connected. According to the previous example, the connection cables between the first connector A1 and the non-corresponding second connector B2 or C2 are wrongly connected, and the connection cables between the first connector A1 and the corresponding second connector A2 For the correct connection, the rest are deduced in turn.

The first connector 110 and the second connector 120 having a corresponding relationship are schematically connected by dotted lines in FIG. 1 .

One or more complex programmable logic devices (Complex programmable logic devices, CPLDs) 112 are deployed on the main board 11 ; one or more signal differentiation components 122 are deployed on the sub-board 12 .

In the embodiment of the present application, the signal distinguishing component on the sub-board 12 is used to obtain different types of signals, wherein the types include frequency and/or duty cycle; Types of signals are respectively output to the plurality of second connectors, wherein the types of signals connected to different second connectors are different; for example, the signal distinguishing component obtains the Signals, combined with the above example, the signal of type 1 is used to output to the second connector A2, the signal of type 2 is used to output to the second connector B2, the signal of type 3 is used to output to the second connector C2, Type 4 signals are used for output to the second connector D2.

The CPLD on the main board 11 is used to determine whether the cable between the main board and the sub-board is properly connected according to the signal type of each first connector in the plurality of first connectors. It should be noted that, the type of signal connected to each second connector among the plurality of second connectors is stored in the CPLD, for example, in the form shown in Table 1.

Table 1

second connector signal type Second connector A2 Type 1 Second connector B2 Type 2 Second connector C2 Type 3 Second connector D2 Type 4

Since the CPLD already knows which second connector each first connector corresponds to, and also knows what type of signal is on each second connector, therefore, when the cable is connected correctly, each first What types of signals should be received by the connectors can also be determined. Therefore, the CPLD can determine the type of signals that each first connector in the plurality of first connectors should receive and the type of signals actually received. Make sure the cables between the main board and the sub board are properly connected.

For example, if it is detected that the type of the signal on the first connector A1 (that is, the type of the signal actually received) is the target type (that is, the type of the signal that should be received), then on the first connector A1 The cable connected to the sub-board is correctly connected, wherein the target type is the type of the signal connected to the second connector A2 corresponding to the first connector A2.

Similarly, if it is detected that the type of the signal of the first connector B1 (that is, the type of the signal actually received) is the target type (that is, the type of the signal that should be received), then the connection on the first connector B1 The cable connection to the sub-board is correct, wherein the target type is the type of the signal connected to the second connector B2 corresponding to the first connector B2.

The determination of the signal types of other first connectors can be deduced in the same way.

It can be understood that when it is determined that one or more groups of corresponding first connectors and second connectors are connected incorrectly, it can be determined that the cable connections between the main board 11 and the sub-board 12 are incorrect.

In the embodiment of the present application, the secondary board 12 can be a backplane and/or a riser card. Optionally, the backplane can be used to connect hard disks, etc. A function expansion card or a riser card on a componentinterconnectexpress (PCI-Express) interface. Of course, the backplane can also be other types of circuit boards, as long as they can be connected to the main board through connectors and cables, and there is no limitation here.

For ease of understanding, the following uses the above-mentioned type as an example for illustration.

Optionally, in the case where the type is frequency, the above-mentioned sub-board 12 may also include a crystal oscillator. In terms of obtaining different types of signals, the signal distinguishing component is specifically used to perform frequency division processing on the fundamental frequency signal of the crystal oscillator to obtain different frequencies signal of. For example, the signal distinguishing component takes the base frequency signal as input, and outputs signals of various other frequencies after processing, such as 1/2 base frequency signal, 1/4 base frequency signal, 1/8 base frequency signal, etc., and outputs The frequency of the signal can be higher or lower than the fundamental frequency.

Optionally, the fundamental frequency signal of the crystal oscillator is also used to be output to one of the plurality of second connectors. Also using the above example to illustrate, the signal distinguishing component can divide 1/2 base frequency signal, 1/4 base frequency signal, 1/8 base frequency signal, these 3 signals can only be input to the second connector A2, There are three second connectors among the second connector B2, the second connector C2 and the second connector D2, and there is one second connector that has no signal corresponding to it, and if the fundamental frequency signal of the crystal oscillator Also as one input, there are exactly 4 signals corresponding to 4 second connectors, and each second connector can respectively receive signals of different frequencies.

引脚。In the embodiment of the present application, the signal distinguishing component may be an integrated circuit or a chip, such as a CPLD, or a D flip-flop, such as a single D flip-flop, a double D flip-flop, a triple D flip-flop, and the like. When the signal distinguishing component is a D flip-flop, the D pin of the D flip-flop is connected to the D flip-flop

pin.

In order to facilitate understanding, the D flip-flop is 74LVC74A (belonging to a double D flip-flop) as an example for illustration below.

Case 1, as shown in FIG. 2 , a signal distinguishing component 122 is specifically deployed on the sub-board 12 , and the signal distinguishing component 122 is a double-D flip-flop, which can be called the first double-D flip-flop for ease of description. , the first double D flip-flop 1CP pin is used to connect the base frequency signal of the crystal oscillator 123, the frequency division signal (ie 1/2 base frequency signal) output by the 1Q pin of the first double D flip-flop One branch is used to output to a second connector among the plurality of second connectors, and the other branch of the frequency division signal output by the 1Q pin of the first double D flip-flop is used to output to The 2CP pin of the first double D flip-flop, that is, the 1/2 base frequency signal output by the 1Q pin of the first double D flip-flop is used as the input of the 2CP pin of the first double D flip-flop, and the The frequency-divided signal (that is, the 1/4 fundamental frequency signal) output by the 2Q pin of the first dual D flip-flop is used to output to one second connector among the plurality of second connectors. It can be seen that the frequency division based on a double D flip-flop can at least separate a 1/2 base frequency signal, a 1/4 base frequency signal, plus the original base frequency signal of the crystal oscillator 123, a total of at least 3 Signals of different frequencies can be used as the input of three second connectors, for example, as the input of the second connectors A2, B2, and C2 respectively.

In case 2, multiple signal distinguishing components are specifically deployed on the sub-board, and the multiple signal distinguishing components are specifically multiple double-D flip-flops, and the multiple double-D flip-flops may be two or may be more than two, The specific number can be set according to the number of different frequency signals required. No matter how many double D flip-flops there are, the following will take the two double D flip-flops included as an example. Introduction, as an example for easy description, these two double D flip-flops are called the second double D flip-flop and the third double D flip-flop, and the second double D flip-flop and the third double D flip-flop are cascaded way to connect.

The 1CP pin of the second double D flip-flop is used to connect the base frequency signal of the crystal oscillator, and one of the frequency division signals (ie 1/2 base frequency signal) output by the 1Q pin of the second double D flip-flop The branch is used to output to one of the plurality of second connectors, and the other branch of the frequency division signal output by the 1Q pin of the second double D flip-flop is used to output to the The 2CP pin of the second double D flip-flop, that is, the 1/2 base frequency signal output by the 1Q pin of the second double D flip-flop is used as the input of the 2CP pin of the second double D flip-flop, and the second The frequency-divided signal (that is, the 1/4 fundamental frequency signal) output by the 2Q pin of the dual D flip-flop is used to output to one second connector among the plurality of second connectors.

The 1CP pin of the third double D flip-flop is used to connect the 2Q pin of the second double D flip-flop, that is to say, the 1/4 base frequency signal output by the 2Q pin of the second double D flip-flop is also used for As the input of the 1CP pin of the third double D flip-flop, a branch of the frequency division signal (ie 1/8 frequency division signal) output by the 1Q pin of the third double D flip-flop is used to output to the multiple One of the second connectors in the second connector, the other branch of the frequency division signal (that is, the 1/8 frequency division signal) output by the 1Q pin of the third double D flip-flop is used to output to the third double D The 2CP pin of the flip-flop, that is, the 1/8 base frequency signal output by the 1Q pin of the third double D flip-flop is used as the input of the 2CP pin of the third double D flip-flop, and the 2Q of the third double D flip-flop The frequency-divided signal (that is, the 1/16 base frequency signal) output by the pin is used to be output to a second connector among the plurality of second connectors.

It can be seen that the frequency division based on two double D flip-flops can at least separate a 1/2 base frequency signal, a 1/4 base frequency signal, a 1/8 base frequency signal, and a 1/16 base frequency signal. The base frequency signal, plus the original base frequency signal of the crystal oscillator, has a total of at least 5 kinds of frequency signals, so it can be used as the input of 5 second connectors. If there are more double D flip-flops, then the signal frequency that can be provided There are also more types, and the number of second connectors that can be connected is also larger.

Certainly, besides being 74LVC74A specifically, the double D flip-flop can also be other devices.

In the embodiment of the present application, the electronic device 10 may further include a Baseboard Management Controller (BMC) 13, and the CPLD is also used to report the detection result of whether the cable is connected correctly to the BMC, and the BMC receives from When the CPLD learns that the cable connection between the main board and the sub-board is wrong, the BMC is used to output prompt information to prompt that the cable connection between the main board and the sub-board is wrong, for example, the The BMC sends a prompt to the user using the electronic device through text, or animation, or voice, or other methods, so that the user can learn that the cable connection between the main board and the sub-board is wrong or missed.

Optionally, as shown in Figure 3, Figure 3 shows the CPLD on the main board, the double D flip-flop on the sub-board, and the crystal oscillator cooperate with each other to detect whether the cable is connected between the main board and the sub-board. Said, firstly, the crystal oscillator provides the basic frequency signal, that is, the base frequency signal. The base frequency signal is used as the input of the double D flip-flop. After the double D flip-flop performs frequency division processing, it outputs one or more frequency division signals. The one or a plurality of frequency division signals are output to the first connector of the main board through the second connector of the double D flip-flop through the cable, and the CPLD on the main board detects the frequency of the signal of each first connector, and judges the detected Whether the frequency of the signal (that is, the actual signal frequency) is consistent with the frequency of the preset signal (that is, the expected signal frequency) determines whether to notify the BMC for an alarm, and if it is consistent (that is, the cable connection is correct), then the BMC is not notified for an alarm (expressed as PASS), if they are consistent (that is, the cable connection is wrong), the BMC will be notified to give an alarm.

The electronic devices in the embodiments of the present application can be servers, computers, vehicle-mounted equipment (such as automobiles, bicycles, electric vehicles, airplanes, ships, etc.), smart home equipment (such as refrigerators, TVs, air conditioners, electric meters, etc.), intelligent robots , workshop equipment and other electronic equipment, or devices (or modules, or components) in the electronic equipment.

Using the above method, by setting the signal distinguishing component on the sub-board, different types of signals corresponding to different second connectors can be divided, and the CPLD on the main board can be determined based on the signal types corresponding to different second connectors The signal type that should be received by the corresponding first connector, the CPLD compares the signal type that each first connector should receive with the signal type actually received by the first connector, if the two are different then It can be determined that the cable connected between the main board and the sub-board is a wrong connection, and if the two are the same, it can be determined that the cable connected between the main board and the sub-board is a correct connection. Based on this idea, it is possible to quickly and accurately detect whether the cable is connected correctly.

It should be noted that, when the signal distinguishing component is a component smaller in size than the CPLD, the signal distinguishing component does not need to occupy too much space when it is deployed on the sub-board, and when the signal distinguishing component is less expensive than the CPLD In the case of a single component, deploying the signal differentiation component on the sub-board can save capital costs. Especially when the signal distinguishing component is a D flip-flop, the space occupied by the deployment can be significantly reduced, and the capital cost required for the deployment can be significantly reduced.

Those of ordinary skill in the art can understand that all or part of the processes in the methods of the above embodiments are realized. The processes can be completed by computer programs or hardware related to the computer programs. The computer programs can be stored in computer-readable storage media. The computer programs During execution, it may include the processes of the foregoing method embodiments. The aforementioned storage medium includes: ROM or random access memory RAM, magnetic disk or optical disk, and other various media that can store computer program codes.

Claims (30)

1. An electronic device, characterized in that it comprises a main board and a sub-board, a plurality of first connectors are configured on the main board, a plurality of second connectors are configured on the sub-board, and a plurality of first connectors are configured on the sub-board. The connectors are in one-to-one correspondence with the plurality of second connectors; a complex programmable logic device CPLD is deployed on the main board, and one or more signal distinguishing components are deployed on the sub-board; The signal distinguishing component is used to obtain different types of signals, wherein the types include frequency and/or duty cycle; The signal distinguishing component is configured to respectively output the signals of different types to the plurality of second connectors, wherein the types of signals connected to different second connectors are different; The CPLD is used to determine whether the cable between the main board and the sub-board is correctly connected according to the signal type of each first connector in the plurality of first connectors. 2. The electronic device according to claim 1, wherein the type of signal connected to the second connector corresponding to each first connector among the plurality of first connectors is set in the In the CPLD; if it is detected that the type of the signal of the first connector is the target type, then the cable connected to the sub-board on the first connector is connected correctly, wherein the target type is the first A type of signal connected to a second connector corresponding to a connector. 3. The electronic device according to claim 1, wherein the sub-board comprises a backplane and/or a riser card. 4. The electronic device according to any one of claims 1-3, wherein the type is specifically frequency, and the sub-board further includes a crystal oscillator; in terms of obtaining different types of signals, the signal distinguishing component specifically It is used for performing frequency division processing on the fundamental frequency signal of the crystal oscillator to obtain signals of different frequencies. 5 . The electronic device according to claim 4 , wherein the fundamental frequency signal of the crystal oscillator is also used to output to one second connector among the plurality of second connectors. 6. The electronic device according to claim 4 or 5, wherein the signal distinguishing component comprises a D flip-flop, and the D pin of the D flip-flop is connected to the D flip-flop of the D flip-flop.

pin. 7. The electronic device according to claim 6, wherein the D flip-flop is specifically a double D flip-flop, and a signal distinguishing component is specifically arranged on the sub-board, and the signal distinguishing component is a first A double D flip-flop, the 1CP pin of the first double D flip-flop is used to connect the fundamental frequency signal of the crystal oscillator, and a branch of the frequency division signal output by the 1Q pin of the first double D flip-flop is used for output to one of the plurality of second connectors, the other branch of the frequency division signal output by the 1Q pin of the first dual D flip-flop is used to output to the first dual D The 2CP pin of the flip-flop, the frequency division signal output by the 2Q pin of the first dual D flip-flop is used to output to one second connector among the plurality of second connectors. 8. The electronic device according to claim 6, wherein the D flip-flop is specifically a double D flip-flop, and a plurality of signal distinguishing components are specifically arranged on the sub-board, and the plurality of signal distinguishing components are specifically is a plurality of double D flip-flops, the plurality of double D flip-flops includes a second double D flip-flop and a third double D flip-flop, and the second double D flip-flop and the third double D flip-flop are staged connected in a linked way; The 1CP pin of the second double D flip-flop is used to connect the base frequency signal of the crystal oscillator, and a branch of the frequency division signal output by the 1Q pin of the second double D flip-flop is used to output to the multiple One of the second connectors, the other branch of the frequency division signal output by the 1Q pin of the second double D flip-flop is used to output to the 2CP pin of the second double D flip-flop Pin, the frequency division signal output by the 2Q pin of the second double D flip-flop is used to output to a second connector in the plurality of second connectors; The 1CP pin of the third double D flip-flop is used to connect the 2Q pin of the second double D flip-flop, and a branch of the frequency division signal output by the 1Q pin of the third double D flip-flop is used for output to one of the plurality of second connectors, and another branch of the frequency division signal output by the 1Q pin of the third dual D flip-flop is used to output to the third dual D The 2CP pin of the flip-flop, the frequency division signal output by the 2Q pin of the third dual D flip-flop is used to output to one second connector among the plurality of second connectors. 9. The electronic device according to any one of claims 1-8, wherein the electronic device further comprises a baseboard management controller (BMC), and the CPLD is also used to check whether the cables are connected correctly report to the BMC, and the BMC is used to output prompt information to prompt that the cable connection between the main board and the sub board is wrong. 10. A sub-board, characterized in that the sub-board is configured with a plurality of second connectors, and the plurality of second connectors correspond to the plurality of first connectors on the main board one by one, wherein: The signal distinguishing component is used to obtain different types of signals, wherein the types include frequency and/or duty cycle; The signal distinguishing component is configured to respectively output the signals of different types to the plurality of second connectors, wherein the types of signals connected to different second connectors are different; The plurality of second connectors are used to transmit signals to the plurality of first connectors of the motherboard through cables. 11. The sub-board according to claim 10, wherein the sub-board comprises a backplane and/or a riser card. 12. The sub-board according to any one of claims 10-11, wherein the type is specifically frequency, and the sub-board further includes a crystal oscillator; in terms of obtaining different types of signals, the signal distinguishing component specifically It is used for performing frequency division processing on the fundamental frequency signal of the crystal oscillator to obtain signals of different frequencies. 13 . The sub-board according to claim 12 , wherein the fundamental frequency signal of the crystal oscillator is also used to output to one of the plurality of second connectors. 14 . 14. The sub-board according to claim 12 or 13, wherein the signal distinguishing component comprises a D flip-flop, and the D pin of the D flip-flop is connected to the

pin. 15. The sub-board according to claim 14, wherein the D flip-flop is specifically a double D flip-flop, and a signal distinguishing component is specifically deployed on the sub-board, and the signal distinguishing component is a first A double D flip-flop, the 1CP pin of the first double D flip-flop is used to connect the fundamental frequency signal of the crystal oscillator, and a branch of the frequency division signal output by the 1Q pin of the first double D flip-flop is used for output to one of the plurality of second connectors, the other branch of the frequency division signal output by the 1Q pin of the first dual D flip-flop is used to output to the first dual D The 2CP pin of the flip-flop, the frequency division signal output by the 2Q pin of the first dual D flip-flop is used to output to one second connector among the plurality of second connectors. 16. The sub-board according to claim 14, wherein the D flip-flop is specifically a double D flip-flop, and a plurality of signal distinguishing components are specifically arranged on the sub-board, and the plurality of signal distinguishing components are specifically is a plurality of double D flip-flops, the plurality of double D flip-flops includes a second double D flip-flop and a third double D flip-flop, and the second double D flip-flop and the third double D flip-flop are staged connected in a connected way; The 1CP pin of the second double D flip-flop is used to connect the base frequency signal of the crystal oscillator, and a branch of the frequency division signal output by the 1Q pin of the second double D flip-flop is used to output to the multiple One of the second connectors, the other branch of the frequency division signal output by the 1Q pin of the second double D flip-flop is used to output to the 2CP pin of the second double D flip-flop Pin, the frequency division signal output by the 2Q pin of the second double D flip-flop is used to output to a second connector in the plurality of second connectors; The 1CP pin of the third double D flip-flop is used to connect the 2Q pin of the second double D flip-flop, and a branch of the frequency division signal output by the 1Q pin of the third double D flip-flop is used for output to one of the plurality of second connectors, and another branch of the frequency division signal output by the 1Q pin of the third dual D flip-flop is used to output to the third dual D The 2CP pin of the flip-flop, the frequency division signal output by the 2Q pin of the third dual D flip-flop is used to output to one second connector among the plurality of second connectors. 17. A cable connection detection method, characterized in that it is applied to an electronic device, the electronic device includes a main board and a sub-board, the main board is equipped with a plurality of first connectors, and the sub-board is equipped with multiple a plurality of second connectors, the plurality of first connectors correspond to the plurality of second connectors one by one; the complex programmable logic device CPLD is deployed on the main board, and one or A plurality of signal distinguishing components, the method comprising: Different types of signals are obtained by the signal distinguishing component, and the types include frequency and/or duty cycle. The different types of signals are respectively used to be output to the plurality of second connectors, and different second connectors are connected to The type of input signal is different; Whether the cable between the main board and the sub-board is correctly connected is determined by the CPLD according to the signal type of each first connector in the plurality of first connectors. 18. The method according to claim 17, characterized in that the type of signal connected to the second connector corresponding to each first connector among the plurality of first connectors is set in the CPLD If it is detected that the signal type of the first connector is the target type, then the cable connected to the sub-board on the first connector is connected correctly, wherein the target type is the first The type of signal connected to the second connector corresponding to the connector. 19. The method according to claim 17, wherein the sub-board comprises a backplane and/or a riser card. 20. The method according to any one of claims 17-19, wherein the type is specifically frequency, and the sub-board further includes a crystal oscillator; in terms of obtaining different types of signals, the signal distinguishing component specifically uses The method is to perform frequency division processing on the fundamental frequency signal of the crystal oscillator to obtain signals of different frequencies. 21. The method according to claim 20, wherein the fundamental frequency signal of the crystal oscillator is also used to output to one second connector among the plurality of second connectors. 22. The method according to claim 20 or 21, wherein the signal distinguishing component comprises a D flip-flop, and the D pin of the D flip-flop is connected to the D flip-flop of the D flip-flop.

pin. 23. The method according to claim 22, wherein the D flip-flop is specifically a dual D flip-flop, and a signal distinguishing component is specifically deployed on the sub-board, and the signal distinguishing component is a first dual D flip-flop. D flip-flop, the 1CP pin of the first double D flip-flop is used to connect the base frequency signal of the crystal oscillator, and a branch of the frequency division signal output by the 1Q pin of the first double D flip-flop is used for output To one of the plurality of second connectors, the other branch of the frequency division signal output by the 1Q pin of the first dual D flip-flop is used to output to the first dual D flip-flop The frequency division signal output by the 2Q pin of the first dual D flip-flop is used to output to one of the plurality of second connectors. 24. The method according to claim 22, wherein the D flip-flop is specifically a double D flip-flop, and a plurality of signal distinguishing components are specifically deployed on the sub-board, and the multiple signal distinguishing components are specifically A plurality of double D flip-flops, the plurality of double D flip-flops including a second double D flip-flop and a third double D flip-flop, the second double D flip-flop and the third double D flip-flop are cascaded way to connect; The 1CP pin of the second double D flip-flop is used to connect the base frequency signal of the crystal oscillator, and a branch of the frequency division signal output by the 1Q pin of the second double D flip-flop is used to output to the multiple One of the second connectors, the other branch of the frequency division signal output by the 1Q pin of the second double D flip-flop is used to output to the 2CP pin of the second double D flip-flop Pin, the frequency division signal output by the 2Q pin of the second double D flip-flop is used to output to a second connector in the plurality of second connectors; The 1CP pin of the third double D flip-flop is used to connect the 2Q pin of the second double D flip-flop, and a branch of the frequency division signal output by the 1Q pin of the third double D flip-flop is used for output to one of the plurality of second connectors, and another branch of the frequency division signal output by the 1Q pin of the third dual D flip-flop is used to output to the third dual D The 2CP pin of the flip-flop, the frequency division signal output by the 2Q pin of the third dual D flip-flop is used to output to one second connector among the plurality of second connectors. 25. The method according to any one of claims 17-24, wherein the electronic device further comprises a baseboard management controller (BMC), and the CPLD is also used to report the detection result of whether the cable is connected correctly To the BMC, the BMC is configured to output prompt information to prompt that the cable connection between the main board and the sub-board is incorrect. 26. A cable connection detection method, characterized in that it is applied to a sub-board, and a plurality of second connectors are arranged on the sub-board, and the plurality of second connectors are connected to a plurality of first connectors on the main board There is a one-to-one correspondence between devices, among which: Obtaining different types of signals through the signal distinguishing component, wherein the types include frequency and/or duty cycle; Outputting the different types of signals to the plurality of second connectors respectively, wherein the types of signals connected to different second connectors are different; The plurality of second connectors are used to transmit signals to the plurality of first connectors of the motherboard through cables. 27. The method according to claim 26, wherein the sub-board comprises a backplane and/or a riser card. 28. The method according to claim 26 or 27, wherein the type is specifically frequency, and the sub-board further includes a crystal oscillator; in terms of obtaining different types of signals, the signal distinguishing component is specifically used to classify the The fundamental frequency signal of the above-mentioned crystal oscillator is subjected to frequency division processing to obtain signals of different frequencies. 29. The method according to claim 28, wherein the fundamental frequency signal of the crystal oscillator is also used to output to one second connector among the plurality of second connectors. 30. The method according to claim 28 or 29, wherein the signal distinguishing component comprises a D flip-flop, and the D pin of the D flip-flop is connected to the D flip-flop of the D flip-flop.

pin.

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