Sideband signal conditioning system, method and storage device

Abstract

This application discloses a sideband signal adjustment system, method, and storage device. The sideband signal adjustment system includes: an M.2 interface module with a first power supply voltage pin and a second power supply voltage pin, a switching module, and a control module. When the control module detects that the second power supply voltage pin receives a second power supply voltage, it electrically connects the switching module to the second power supply voltage pin, thereby receiving or transmitting a second sideband signal with the same signal voltage as the second power supply voltage through the M.2 interface module. When the control module detects that the first power supply voltage pin receives a first power supply voltage, it electrically connects the switching module to the first power supply voltage pin, thereby receiving or transmitting a first sideband signal with the same signal voltage as the first power supply voltage through the M.2 interface module. The first power supply voltage and the second power supply voltage are different.

Description

Technical Field

[0001] This application relates to the field of M.2 interface technology, and more particularly to a sideband signal adjustment system, method and storage device. Background Technology

[0002] The M.2 interface is a standard specification for a new transmission interface developed by the PCI-SIG and SATA-IO standards organizations. Due to its high access speed, small size, and support for multiple interface protocols, the M.2 interface is widely used in various terminal devices (such as solid-state drives (SSDs) and wireless gateways).

[0003] In the prior art, when the M.2 interface is used for high-speed communication between a device and a host (e.g., an information processing device such as a personal computer, a tablet computer, or other devices), the host and the device can receive and / or transmit sideband signals with a signal voltage of 3.3V through the M.2 interface.

[0004] However, in order to save energy or diversify applications, the signal voltage of the sideband signal between the host and the device may be adjusted (e.g., reducing the signal voltage to reduce current and thus save power), so that the sideband signal communicating between the host and the device through the M.2 interface may have different signal voltages at the same time.

[0005] Therefore, how to enable devices with the M.2 interface to receive or transmit sideband signals with different signal voltages and ensure smooth operation is the goal of relevant manufacturers. Summary of the Invention

[0006] The main objective of this application is to provide a sideband signal adjustment system, method, and storage device that enables a device with an M.2 interface (e.g., a storage device) to receive or transmit sideband signals with different signal voltages and ensures smooth operation.

[0007] To achieve the above objectives, this application is implemented as follows:

[0008] A first aspect provides a sideband signal adjustment system, comprising: an M.2 interface module, a switching module, and a control module. The M.2 interface module includes a first power supply voltage pin and a second power supply voltage pin. One end of the switching module is selectively electrically connected to either the first power supply voltage pin or the second power supply voltage pin. The control module is electrically connected to the other end of the M.2 interface module and the switching module, and includes: a detection terminal and an input / output terminal. The detection terminal is used to send a control signal to the switching module when it detects that the second power supply voltage pin receives a second power supply voltage, causing the switching module to electrically connect to the second power supply voltage pin; and to send another control signal to the switching module when it detects that the first power supply voltage pin receives a first power supply voltage, causing the switching module to electrically connect to the first power supply voltage pin, wherein the first power supply voltage and the second power supply voltage are different. When the input / output terminal is used to switch the module electrically connected to the second power supply voltage pin, it receives or sends a second sideband signal through the M.2 interface module. The signal voltage of the second sideband signal is the same as that of the second power supply voltage. When the switching module is electrically connected to the first power supply voltage pin, it receives or sends a first sideband signal through the M.2 interface module. The signal voltage of the first sideband signal is the same as that of the first power supply voltage.

[0009] Secondly, another sideband signal adjustment system is provided, comprising: an M.2 interface module, a control module, and a power management module. The M.2 interface module includes a first power supply voltage pin and a second power supply voltage pin; the control module is electrically connected to the M.2 interface module and includes input and output terminals; the power management module is electrically connected to the control module, the first power supply voltage pin, and the second power supply voltage pin, and is used to provide a second power supply voltage to the control module when the second power supply voltage pin is detected to receive a second power supply voltage, so that the input and output terminals receive or transmit a second sideband signal through the M.2 interface module; and to provide a first power supply voltage to the control module when the first power supply voltage pin is detected to receive a first power supply voltage, so that the input and output terminals receive or transmit a first sideband signal through the M.2 interface module. The signal voltage of the first sideband signal is the same as the first power supply voltage, the signal voltage of the second sideband signal is the same as the second power supply voltage, and the first power supply voltage and the second power supply voltage are different.

[0010] Thirdly, a sideband signal adjustment method is provided, comprising the following steps: providing a sideband signal adjustment system, comprising: an M.2 interface module, a switching module, and a control module; the M.2 interface module includes a first power supply voltage pin and a second power supply voltage pin; one end of the switching module is selectively electrically connected to either the first power supply voltage pin or the second power supply voltage pin; the control module is electrically connected to the other end of the M.2 interface module and the switching module; the control module detects whether the second power supply voltage pin receives a second power supply voltage, and detects whether the first power supply voltage pin receives a first power supply voltage, wherein the first power supply voltage and the second power supply voltage are different; the control module detects that the second power supply voltage pin receives a second power supply voltage. When the power supply voltage is at its maximum, a control signal is sent to the switching module, causing the switching module to electrically connect to the second power supply voltage pin. When the switching module is electrically connected to the second power supply voltage pin, the control module receives or sends a second sideband signal through the M.2 interface module, wherein the signal voltage of the second sideband signal is the same as the second power supply voltage. When the control module detects that the first power supply voltage pin receives the first power supply voltage, it sends another control signal to the switching module, causing the switching module to electrically connect to the first power supply voltage pin. When the switching module is electrically connected to the first power supply voltage pin, the control module receives or sends a first sideband signal through the M.2 interface module, wherein the signal voltage of the first sideband signal is the same as the first power supply voltage.

[0011] Fourthly, another sideband signal adjustment method is provided, comprising the following steps: providing a sideband signal adjustment system, comprising: an M.2 interface module, a control module, and a power management module; the M.2 interface module includes a first power supply voltage pin and a second power supply voltage pin; the control module is electrically connected to the M.2 interface module; the power management module is electrically connected to the control module, the first power supply voltage pin, and the second power supply voltage pin; the power management module detects whether the second power supply voltage pin receives a second power supply voltage, and detects whether the first power supply voltage pin receives a first power supply voltage, wherein the first power supply voltage and the second power supply voltage are different; when the power management module detects that the second power supply voltage pin receives the second power supply voltage, it provides the second power supply voltage to the control module, so that the control module receives or transmits a second sideband signal through the M.2 interface module, wherein the signal voltage of the second sideband signal is the same as the second power supply voltage; when the power management module detects that the first power supply voltage pin receives the first power supply voltage, it provides the first power supply voltage to the control module, so that the control module receives or transmits a first sideband signal through the M.2 interface module, wherein the signal voltage of the first sideband signal is the same as the first power supply voltage.

[0012] Fifthly, a storage device is provided, including the sideband signal adjustment system of the present application embodiments.

[0013] In this application, the sideband signal adjustment system, method, and storage device, through the configuration of a switching module or power management module, can receive a second power supply voltage based on a second power supply voltage pin, and receive or transmit a second sideband signal with the same signal voltage as the second power supply voltage; and can receive a first power supply voltage based on a first power supply voltage pin, and receive or transmit a first sideband signal with the same signal voltage as the first power supply voltage. Therefore, a device with an M.2 interface (e.g., a storage device) using the sideband signal adjustment system can receive or transmit sideband signals with different signal voltages and ensure smooth operation. Attached Figure Description

[0014] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0015] Figure 1 Block diagram of an embodiment of the storage device and host of the sideband signal adjustment system of this application;

[0016] Figure 2 This is a schematic diagram of an embodiment of the sideband signal adjustment system according to this application;

[0017] Figure 3 This is a schematic diagram of another embodiment of the sideband signal adjustment system according to this application;

[0018] Figure 4 Block diagram of another embodiment of the storage device and host of the sideband signal adjustment system of this application;

[0019] Figure 5 A flowchart illustrating an embodiment of the sideband signal adjustment method according to this application; and

[0020] Figure 6 This is a flowchart of another embodiment of the sideband signal adjustment method according to this application. Detailed Implementation

[0021] The embodiments of the present invention will be described below with reference to the accompanying drawings. In these drawings, the same reference numerals denote the same or similar components or method flows.

[0022] It must be understood that the use of terms such as "comprising" or "including" in this specification is intended to indicate the presence of specific technical features, values, method steps, work processes, components and / or components, but does not preclude the addition of more technical features, values, method steps, work processes, components, or any combination thereof.

[0023] It is important to understand that when a component is described as "connected" or "coupled" to another component, it can be a direct connection or coupling to other components, and there may be intermediate components. Conversely, when a component is described as "directly connected" or "directly coupled" to another component, there are no intermediate components.

[0024] Please see Figure 1 This is a block diagram of an embodiment of the storage device and host of the sideband signal adjustment system of this application. Figure 1 As shown, in this embodiment, the sideband signal adjustment system 100 can be applied to the storage device 40. The sideband signal adjustment system 100 includes an M.2 interface module 110, a switching module 120, and a control module 130. The M.2 interface module 110 is used to selectively connect to the M.2 interface module 62 of the host 60. In this embodiment, the storage device 40 may be, but is not limited to, a solid-state drive; the host 60 may be, but is not limited to, a computer device; the M.2 interface module 110 may be, but is not limited to, an M.2 interface connector; and the M.2 interface module 62 may be, but is not limited to, a gold finger module conforming to the M.2 interface standard. However, this embodiment is not intended to limit this application and can be adjusted according to actual needs.

[0025] In this embodiment, the M.2 interface module 110 includes a first power supply voltage pin 112 and a second power supply voltage pin 114. The first power supply voltage pin 112 is used to receive a first power supply voltage, and the second power supply voltage pin 114 is used to receive a second power supply voltage. The first power supply voltage and the second power supply voltage are different. Specifically, when the M.2 interface module 110 is connected to the M.2 interface module 62, if the host 60 provides the first power supply voltage to the first power supply voltage pin 112 through the M.2 interface module 62, the first power supply voltage pin 112 can receive the first power supply voltage; if the host 60 provides the second power supply voltage to the second power supply voltage pin 114 through the M.2 interface module 62, the second power supply voltage pin 114 can receive the second power supply voltage. The type of the M.2 interface module 110 can be, but is not limited to, a Socket 2 with a B-KEY, and the M.2 interface module 62 has a corresponding B-KEY structure. However, this embodiment is not intended to limit this application and can be adjusted according to actual needs. In one embodiment, the M.2 interface module 110 may be, but is not limited to, a Socket 3 with an M-KEY, and the M.2 interface module 62 may have a corresponding M-KEY structure. In another embodiment, the M.2 interface module 110 further includes circuitry compatible with both B-KEY and M-KEY, and the M.2 interface module 62 may have a corresponding M-KEY structure or a B-KEY structure.

[0026] In this embodiment, the first power supply voltage pin 112 may be, but is not limited to, pin 72 (i.e., pin 72 of the current M.2 interface standard), and the second power supply voltage pin 114 may be, but is not limited to, pin 22 (i.e., pin 22 of the current M.2 interface standard). The voltage value of the first power supply voltage is 3.3V, and the voltage value of the second power supply voltage is 1.8V. However, this embodiment is not intended to limit this application and can be adjusted according to actual needs. For example, the second power supply voltage pin 114 may be any undefined pin in the current M.2 interface standard.

[0027] In this embodiment, one end of the switching module 120 is selectively electrically connected to the first power supply voltage pin 112 or the second power supply voltage pin 114; the control module 130 is electrically connected to the M.2 interface module 110 and the other end of the switching module 120, and includes a detection terminal 132 and an input / output terminal 134.

[0028] The detection terminal 132 is electrically connected to the M.2 interface module 110 and the switching module 120. When it detects that the second power supply voltage pin 114 receives the second power supply voltage, it sends a control signal to the switching module 120, causing the switching module 120 to electrically connect to the second power supply voltage pin 114. It also sends another control signal to the switching module 120 when it detects that the first power supply voltage pin 112 receives the first power supply voltage, causing the switching module 120 to electrically connect to the first power supply voltage pin 112. In other words, the detection terminal 132 can be used to detect whether the second power supply voltage pin 114 receives the second power supply voltage and whether the first power supply voltage pin 112 receives the first power supply voltage, and output corresponding control signals to the switching module 120 to switch the connection relationship.

[0029] In one embodiment, the detection terminal 132 is further configured to send another control signal to the switching module 120 when it detects that the second power supply voltage pin 114 does not receive the second power supply voltage and the first power supply voltage pin 112 receives the first power supply voltage, so that the switching module 120 is electrically connected to the first power supply voltage pin 112.

[0030] In this embodiment, the input / output terminal 134 is electrically connected to the M.2 interface module 110 and the detection terminal 132. When the switching module 120 is electrically connected to the second power supply voltage pin 114, it receives or transmits a second sideband signal through the M.2 interface module 110, the signal voltage of which is the same as the second power supply voltage. Conversely, when the switching module 120 is electrically connected to the first power supply voltage pin 112, it receives or transmits a first sideband signal through the M.2 interface module 110, the signal voltage of which is the same as the first power supply voltage. In other words, the input / output terminal 134 can receive the second power supply voltage based on the second power supply voltage pin 114, and receive or transmit a second sideband signal with the same signal voltage as the second power supply voltage through the M.2 interface module 110; the input / output terminal 134 can also receive the first power supply voltage based on the first power supply voltage pin 112, and receive or transmit a first sideband signal with the same signal voltage as the first power supply voltage through the M.2 interface module 110. The number of input / output terminals 134 may be, but is not limited to, one. The pins of the M.2 interface module 110 connected to the input / output terminals 134 may be, but are not limited to, pin 50 (i.e., PERST#), pin 52 (i.e., CLKREQ#), and / or pin 54 (i.e., PEWAKE#) in the current M.2 interface standard.

[0031] In one embodiment, please refer to Figure 2 This is a schematic diagram of an embodiment of the sideband signal adjustment system according to this application. In this embodiment, the switching module 120 consists of a single-pole double-throw (SPDT) circuit. Specifically, one end of the SPDT circuit is connected to the control module 130, and the other end of the SPDT circuit is connected to the first power supply voltage pin 112 and the second power supply voltage pin 114, respectively. When the SPDT circuit receives the control signal, it can be electrically connected to the second power supply voltage pin 114; when the SPDT circuit receives the other control signal, it can be electrically connected to the first power supply voltage pin 112.

[0032] In another embodiment, please refer to Figure 3This is a schematic diagram of another embodiment of the sideband signal adjustment system according to this application. In this embodiment, the switching module 120 includes a switch 122a and a switch 122b, wherein one end of switch 122a is connected to a first power supply voltage pin 112 and the other end is connected to the control module 130; one end of switch 122b is connected to a second power supply voltage pin 114 and the other end is connected to the control module 130. Specifically, the switching module 120 can control the on and off of switches 122a and 122b based on control signals from the control module 130. When the control module 130 detects that the second power supply voltage pin 114 receives the second power supply voltage, it sends a control signal to the switching module 120, causing the switching module 120 to turn on switch 122b and turn off switch 122a based on the control signal, thereby electrically connecting the switching module 120 to the second power supply voltage pin 114. When the control module 130 detects that the first power supply voltage pin 112 receives the first power supply voltage, it sends another control signal to the switching module 120, causing the switching module 120 to turn on switch 122a and turn off switch 122b based on the other control signal, thereby electrically connecting the switching module 120 to the first power supply voltage pin 112. Switches 122a and 122b can be, but are not limited to, transistors.

[0033] In one embodiment, when the control module 130 detects that the second power supply voltage pin 114 is not receiving the second power supply voltage and the first power supply voltage pin 112 is receiving the first power supply voltage, it sends another control signal to the switching module 120, so that the switching module 120 turns on the switch 122a and turns off the switch 122b based on the other control signal, thereby making the switching module 120 electrically connected to the first power supply voltage pin 112.

[0034] In one embodiment, the switching module 120 and the control module 130 are integrated together.

[0035] In one embodiment, the control module 130 may be, but is not limited to, a system-on-a-chip (SoC).

[0036] Please see Figure 4 This is a block diagram of another embodiment of the storage device and host of the sideband signal adjustment system of this application. Figure 4As shown, in this embodiment, the sideband signal adjustment system 200 can be applied to the storage device 70. The sideband signal adjustment system 200 includes an M.2 interface module 210, a control module 220, and a power management module 230. The M.2 interface module 210 is used to selectively connect to the M.2 interface module 82 of the host 80. In this embodiment, the storage device 70 may be, but is not limited to, a solid-state drive; the host 80 may be, but is not limited to, a computer device; the M.2 interface module 210 may be, but is not limited to, an M.2 interface connector; and the M.2 interface module 82 may be, but is not limited to, a gold finger module conforming to the M.2 interface standard. However, this embodiment is not intended to limit this application and can be adjusted according to actual needs.

[0037] In this embodiment, the M.2 interface module 210 includes a first power supply voltage pin 212 and a second power supply voltage pin 214. The first power supply voltage pin 212 is used to receive a first power supply voltage, and the second power supply voltage pin 214 is used to receive a second power supply voltage. The first power supply voltage and the second power supply voltage are different. Specifically, when the M.2 interface module 210 is connected to the M.2 interface module 82, if the host 80 provides the first power supply voltage to the first power supply voltage pin 212 through the M.2 interface module 82, the first power supply voltage pin 212 can receive the first power supply voltage; if the host 80 provides the second power supply voltage to the second power supply voltage pin 214 through the M.2 interface module 82, the second power supply voltage pin 214 can receive the second power supply voltage. The M.2 interface module 210 can be a Socket 2 with a B-KEY or a Socket 3 with an M-KEY, or the M.2 interface module 210 can include circuitry compatible with both B-KEY and M-KEY.

[0038] In this embodiment, the first power supply voltage pin 212 may be, but is not limited to, pin 72 (i.e., pin 72 of the current M.2 interface standard), and the second power supply voltage pin 214 may be, but is not limited to, pin 22 (i.e., pin 22 of the current M.2 interface standard). The voltage value of the first power supply voltage is 3.3V, and the voltage value of the second power supply voltage is 1.8V. However, this embodiment is not intended to limit this application and can be adjusted according to actual needs. For example, the second power supply voltage pin 214 may be any undefined pin in the current M.2 interface standard.

[0039] In this embodiment, the control module 220 is electrically connected to the M.2 interface module 210 and includes an input / output terminal 222; the power management module 230 is electrically connected to the control module 220, a first power supply voltage pin 212, and a second power supply voltage pin 214, and is used to provide a second power supply voltage to the control module 220 when the second power supply voltage pin 214 detects that the second power supply voltage is received, so that the input / output terminal 222 receives or sends a second sideband signal through the M.2 interface module 210; and to provide a first power supply voltage to the control module 220 when the first power supply voltage pin 212 of the M.2 interface module 210 detects that the first power supply voltage is received, so that the input / output terminal 222 receives or sends a first sideband signal through the M.2 interface module 210. The signal voltage of the first sideband signal is the same as the first power supply voltage, the signal voltage of the second sideband signal is the same as the second power supply voltage, and the first power supply voltage and the second power supply voltage are different.

[0040] In other words, through the settings of the power management module 230, the input / output terminal 222 can receive the second power supply voltage based on the second power supply voltage pin 214, and receive or send a second sideband signal with the same signal voltage as the second power supply voltage through the M.2 interface module 210; the input / output terminal 222 can also receive the first power supply voltage based on the first power supply voltage pin 212, and receive or send a first sideband signal with the same signal voltage as the first power supply voltage through the M.2 interface module 210. The number of input / output terminals 222 can be, but is not limited to, one, and the pins of the M.2 interface module 210 to which the input / output terminal 222 is connected can be, but are not limited to, pin 50 (i.e., PERST#), pin 52 (i.e., CLKREQ#), and / or pin 54 (i.e., PEVAKE#) in the current M.2 interface standard.

[0041] In one embodiment, when it is detected that the second power supply voltage pin 214 of the M.2 interface module 210 does not receive the second power supply voltage and the first power supply voltage pin 212 receives the first power supply voltage, the first power supply voltage is provided to the control module 220, so that the input / output terminal 222 receives or sends the first sideband signal through the M.2 interface module 210.

[0042] In one embodiment, the power management module 230 may be, but is not limited to, a power management integrated circuit (IC). Besides detecting whether the second power supply voltage pin 214 receives the second power supply voltage and whether the first power supply voltage pin 212 receives the first power supply voltage, it can also receive power from the host 80 to perform any voltage conversion of the received power and output power to the controller of the storage device 70. For example, the power management module 230 can receive 12V power and convert it to 3.3V, 1.2V, or 1.8V, and output the converted power to the controller of the storage device 70.

[0043] Please see Figure 5 This is a flowchart of an embodiment of the sideband signal adjustment method according to this application. In this embodiment, the sideband signal adjustment method includes the following steps: providing a sideband signal adjustment system, which includes: an M.2 interface module, a switching module, and a control module. The M.2 interface module includes a first power supply voltage pin and a second power supply voltage pin. One end of the switching module is selectively electrically connected to either the first power supply voltage pin or the second power supply voltage pin. The control module is electrically connected to the other end of the M.2 interface module and the switching module (step 310); the control module detects whether the second power supply voltage pin receives a second power supply voltage and whether the first power supply voltage pin receives a first power supply voltage, wherein the first power supply voltage and the second power supply voltage are different (step 320); when the control module detects that the second power supply voltage pin receives a second power supply voltage, it sends a signal to the switching module. The module sends a control signal to electrically connect the switching module to the second power supply voltage pin (step 330); when the switching module is electrically connected to the second power supply voltage pin, the control module receives or sends a second sideband signal through the M.2 interface module, wherein the signal voltage of the second sideband signal is the same as the second power supply voltage (step 340); when the control module detects that the first power supply voltage pin receives the first power supply voltage, it sends another control signal to the switching module to electrically connect the switching module to the first power supply voltage pin (step 350); when the switching module is electrically connected to the first power supply voltage pin, the control module receives or sends a first sideband signal through the M.2 interface module, wherein the signal voltage of the first sideband signal is the same as the first power supply voltage (step 360). A detailed description has been provided in the preceding paragraphs and will not be repeated here.

[0044] Please see Figure 6This is a flowchart of another embodiment of the sideband signal adjustment method according to this application. In this embodiment, the sideband signal adjustment method includes the following steps: providing a sideband signal adjustment system, which includes: an M.2 interface module, a control module, and a power management module. The M.2 interface module includes a first power supply voltage pin and a second power supply voltage pin. The control module is electrically connected to the M.2 interface module and includes input and output terminals. The power management module is electrically connected to the control module, the first power supply voltage pin, and the second power supply voltage pin (step 410). The power management module detects whether the second power supply voltage pin receives a second power supply voltage and detects whether the first power supply voltage pin receives a first power supply voltage, wherein the first power supply voltage and the second power supply voltage pin receive a first power supply voltage. The source voltages are different (step 420); when the power management module detects that the second power supply voltage pin receives the second power supply voltage, it provides the second power supply voltage to the control module, enabling the control module to receive or send a second sideband signal through the M.2 interface module, wherein the signal voltage of the second sideband signal is the same as the second power supply voltage (step 430); when the power management module detects that the first power supply voltage pin receives the first power supply voltage, it provides the first power supply voltage to the control module, enabling the control module to receive or send a first sideband signal through the M.2 interface module, wherein the signal voltage of the first sideband signal is the same as the first power supply voltage (step 440). A detailed description has been provided in the preceding paragraphs and will not be repeated here.

[0045] In summary, the sideband signal adjustment system, method, and storage device of this application, through the configuration of a switching module or power management module, can receive a second power supply voltage based on a second power supply voltage pin, and receive or transmit a second sideband signal with the same signal voltage as the second power supply voltage; and can receive a first power supply voltage based on a first power supply voltage pin, and receive or transmit a first sideband signal with the same signal voltage as the first power supply voltage. Therefore, a device with an M.2 interface (e.g., a storage device) using the sideband signal adjustment system can receive or transmit sideband signals with different signal voltages and ensure smooth operation.

[0046] Furthermore, switching modules composed of single-pole double-throw circuits or switching modules including two switches are characterized by low cost and small size. When applied to devices with M.2 interfaces (e.g., storage devices), they can meet the requirements of thinness, small size and low cost of devices with M.2 interfaces (e.g., storage devices).

[0047] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A sideband signal adjustment system, characterized in that, include: The M.2 interface module includes a first power supply voltage pin and a second power supply voltage pin, wherein the first power supply voltage pin is a power supply voltage pin in the M.2 interface standard, and the second power supply voltage pin is another power supply voltage pin in the M.2 interface standard or an undefined pin; A switching module, one end of which is selectively electrically connected to either the first power supply voltage pin or the second power supply voltage pin; and The control module, electrically connected to the other end of the M.2 interface module and the switching module, includes: The detection terminal is configured to send a control signal to the switching module when it detects that the second power supply voltage pin receives a second power supply voltage, thereby electrically connecting the switching module to the second power supply voltage pin; and to send another control signal to the switching module when it detects that the first power supply voltage pin receives a first power supply voltage, thereby electrically connecting the switching module to the first power supply voltage pin, wherein the first power supply voltage and the second power supply voltage are different; and The input / output terminal is electrically connected to the detection terminal and is used to receive or send a second sideband signal through the M.2 interface module when the switching module is electrically connected to the second power supply voltage pin. The signal voltage of the second sideband signal is the same as that of the second power supply voltage. When the switching module is electrically connected to the first power supply voltage pin, it receives or sends a first sideband signal through the M.2 interface module. The signal voltage of the first sideband signal is the same as that of the first power supply voltage. The pins of the M.2 interface module to which the input / output terminal is connected include the pin CLKREQ#.

2. The sideband signal adjustment system according to claim 1, characterized in that, The switching module and the control module are integrated together.

3. The sideband signal adjustment system according to claim 1, characterized in that, The switching module consists of a single-pole double-throw circuit.

4. The sideband signal adjustment system according to claim 1, characterized in that, The M.2 interface module includes circuitry compatible with both B-KEY and M-KEY.

5. The sideband signal adjustment system according to claim 1, characterized in that, The first power supply voltage is 3.3 volts, and the second power supply voltage is 1.8 volts.

6. A storage device, characterized in that, include: The sideband signal adjustment system according to any one of claims 1 to 5.

7. A sideband signal adjustment system, characterized in that, include: The M.2 interface module includes a first power supply voltage pin and a second power supply voltage pin, wherein the first power supply voltage pin is a power supply voltage pin in the M.2 interface standard, and the second power supply voltage pin is another power supply voltage pin in the M.2 interface standard or an undefined pin; The control module is electrically connected to the M.2 interface module and includes input / output terminals; and A power management module is electrically connected to the control module, the first power supply voltage pin, and the second power supply voltage pin. When the second power supply voltage pin is detected to receive a second power supply voltage, the module provides the second power supply voltage to the control module, enabling the input / output terminals to receive or transmit a second sideband signal through the M.2 interface module. When the first power supply voltage pin is detected to receive a first power supply voltage, the module provides the first power supply voltage to the control module, enabling the input / output terminals to receive or transmit a first sideband signal through the M.2 interface module. The pins of the M.2 interface module connected to the input / output terminals include pin CLKREQ#; the signal voltage of the first sideband signal is the same as the first power supply voltage, and the signal voltage of the second sideband signal is the same as the second power supply voltage, but the first power supply voltage and the second power supply voltage are different.

8. The sideband signal adjustment system according to claim 7, characterized in that, The first power supply voltage is 3.3 volts, and the second power supply voltage is 1.8 volts.

9. A storage device, characterized in that, include: The sideband signal adjustment system according to any one of claims 7 to 8.

10. A method for adjusting sideband signals, characterized in that, The following steps are involved: A sideband signal adjustment system is provided, comprising: an M.2 interface module, a switching module, and a control module. The M.2 interface module includes a first power supply voltage pin and a second power supply voltage pin. One end of the switching module is selectively electrically connected to either the first power supply voltage pin or the second power supply voltage pin. The control module is electrically connected to the other end of the M.2 interface module and the switching module. The first power supply voltage pin is a power supply voltage pin in the M.2 interface standard, and the second power supply voltage pin is another power supply voltage pin in the M.2 interface standard or an undefined pin. The control module detects whether the second power supply voltage pin receives the second power supply voltage and whether the first power supply voltage pin receives the first power supply voltage, wherein the first power supply voltage and the second power supply voltage are different. When the control module detects that the second power supply voltage pin receives the second power supply voltage, it sends a control signal to the switching module, causing the switching module to be electrically connected to the second power supply voltage pin. When the switching module is electrically connected to the second power supply voltage pin, the control module receives or sends a second sideband signal to the M.2 interface module through its input / output terminals. The signal voltage of the second sideband signal is the same as the second power supply voltage. The pins of the M.2 interface module connected to the input / output terminals include the pin CLKREQ#. When the control module detects that the first power supply voltage pin receives the first power supply voltage, it sends another control signal to the switching module, causing the switching module to electrically connect to the first power supply voltage pin; and When the switching module is electrically connected to the first power supply voltage pin, the control module receives or sends a first sideband signal to the M.2 interface module through its input / output terminals, wherein the signal voltage of the first sideband signal is the same as the first power supply voltage.

11. A method for adjusting sideband signals, characterized in that, The following steps are involved: A sideband signal adjustment system is provided, comprising: an M.2 interface module, a control module, and a power management module. The M.2 interface module includes a first power supply voltage pin and a second power supply voltage pin. The control module is electrically connected to the M.2 interface module. The power management module is electrically connected to the control module, the first power supply voltage pin, and the second power supply voltage pin. The first power supply voltage pin is a power supply voltage pin in the M.2 interface standard, and the second power supply voltage pin is another power supply voltage pin in the M.2 interface standard or an undefined pin. The power management module detects whether the second power voltage pin receives the second power voltage and whether the first power voltage pin receives the first power voltage, wherein the first power voltage and the second power voltage are different. When the power management module detects that the second power supply voltage pin receives the second power supply voltage, it provides the second power supply voltage to the control module, enabling the control module to receive or transmit a second sideband signal through its input / output terminals and the M.2 interface module. The signal voltage of the second sideband signal is the same as the second power supply voltage. The pins of the M.2 interface module connected to the input / output terminals include pin CLKREQ#; and When the power management module detects that the first power supply voltage pin receives the first power supply voltage, it provides the first power supply voltage to the control module, so that the control module receives or sends a first sideband signal to the M.2 interface module through its input / output terminals, wherein the signal voltage of the first sideband signal is the same as the first power supply voltage.

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