Type-C functional circuit and electronic equipment

Abstract

The utility model discloses a Type-C functional circuit and an electronic device. The Type-C functional circuit is used for rechargeable electronic equipment, the circuit comprises a first interface, a second interface, a CC pin module and a system-on-chip, and the first interface and the second interface are connected to the system-on-chip through the CC pin module. According to the application, the plurality of Type-C interfaces arranged on the equipment are connected to the system-on-chip through the same CC pin, so that one of the interfaces is utilized to charge the electronic equipment under the condition that the equipment is triggered to be started, and the other interface is utilized to realize connection and information transmission of external equipment; and the interference of the charging interface on external equipment connection is avoided.

Description

Technical Field

[0001] This application relates to the field of electronic circuit technology, specifically to a Type-C functional circuit and electronic device. Background Technology

[0002] Currently, in related technologies, mobile phones and other electronic devices typically use multiple USB Type-C ports to connect to charging or external devices. During the charging process, a voltage bus (VBUS) is used to prevent abnormal situations such as charging while the device is off due to a test cable connection or charging while the device is off due to normal power-on operation. However, this approach has several drawbacks. First, the CC pins for the charging port and the external device port cannot be shared, preventing independent operation of the charging and external device interfaces. Second, charging while the device is off due to a charging cable connection disables the power button, preventing the device from powering on. Utility Model Content

[0003] This application provides a Type-C functional circuit and electronic device.

[0004] The Type-C functional circuit involved in the embodiments of this application is used in a rechargeable electronic device. The circuit includes a first interface, a second interface, a CC pin module, and a system-on-a-chip. Both the first interface and the second interface are connected to the system-on-a-chip through the CC pin module.

[0005] Thus, this application connects multiple Type-C interfaces on the device to the system-on-a-chip via a common CC pin, so that one of the interfaces can be used to charge the electronic device when the device is triggered to start, and another interface can be used to connect to external devices and transmit information, thus avoiding interference from the charging interface to the connection of external devices.

[0006] In some embodiments, the circuit further includes a voltage bus module, through which the first interface is connected to the system-on-a-chip, the voltage bus module being configured to supply power to the electronic device when the CC pin module triggers a CC pull-up state.

[0007] Thus, this application enables the charging of electronic devices when the device is triggered to start by setting up a connection between the voltage bus and the first interface.

[0008] In some embodiments, the circuit further includes an external device adapter module, through which the second interface is connected to the system-on-a-chip. The external device adapter module is also connected to the CC pin module. The external device adapter module is configured to control the data transmission between the external device and the system-on-a-chip to be unaffected by the charging process when the CC pin module stops its CC pull-up operation.

[0009] Thus, this application achieves the connection between the external device and the system-on-a-chip by setting up the connection between the external device adapter module and the second interface, thereby avoiding interference from the charging interface to the external device after the device is started.

[0010] In some implementations, the system-on-a-chip (SoC) is provided with a general-purpose input / output port, and the CC pin module is also connected to the SoC through the general-purpose input / output port.

[0011] Thus, this application achieves the goal of disabling the CC pull-up function of the CC pin module after the device has started up by setting the connection between the general input / output port and the CC pin module, thereby avoiding interference from the charging interface to external devices after the device has started up.

[0012] In some implementations, the CC pin module includes a power supply component and a control core component, and the first interface is connected to the input port of the control core component through the power supply component.

[0013] Thus, the CC pin module in this application introduces electrical energy from the charging interface by setting up a power supply component and a control core component to realize the charging process of electronic devices.

[0014] In some implementations, the CC pin module further includes a CC pull-up power supply component, which is connected to the output port and adjustment port of the control core component and is also connected to the system-on-a-chip. The CC pull-up power supply component is configured to adjust and pull up the electrical signal output by the power supply component.

[0015] Thus, the CC pin module in this application also uses a CC pull-up power supply module to charge the electronic device using the power introduced from the charging interface.

[0016] In some implementations, the CC pin module further includes an external device component, through which the second interface is connected to the output port of the control core component.

[0017] Thus, the CC pin module in this application also connects the external device interface to the CC pin module by setting an external device component, thereby enabling the sharing of the CC pin between the charging interface and the external device interface.

[0018] In some implementations, the CC pin module further includes a GPIO control component connected to a general-purpose input / output port of the system-on-a-chip and connected to an enable port of the control core component. The GPIO control component is configured to send a control signal to the enable port through the general-purpose input / output port to control the CC pull-up power supply component to stop the CC pull-up operation.

[0019] Thus, the CC pin module in this application also stops the charging process by setting the GPIO control component to turn off the CC pull-up power supply module when the device is started, thereby avoiding interference with the operation of the external device connected to the external device interface during the charging process.

[0020] In some embodiments, the external device adapter module of the circuit is connected to the output port of the control core component through the external device component, wherein the external device adapter module includes a voltage bus device for configuring the voltage of the external device.

[0021] Thus, the external device connected to the Type-C functional circuit in this application can also be configured with a voltage bus through the external device adapter module in the Type-C functional circuit to meet the power supply requirements of the electronic device when the external device is connected to the electronic device.

[0022] The electronic device in the embodiments of this application includes the Type-C functional circuit described above.

[0023] Additional aspects and advantages of embodiments of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of embodiments of this application. Attached Figure Description

[0024] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, wherein:

[0025] Figure 1 This is one of the schematic diagrams of the module structure of the Type-C functional circuit in the embodiments of this application;

[0026] Figure 2 This is the second schematic diagram of the module structure of the Type-C functional circuit in the embodiments of this application;

[0027] Figure 3This is a schematic diagram of the module structure of the CC pin module in the embodiment of this application;

[0028] Figure 4 This is a schematic diagram of the circuit principle of the CC pin module in the embodiment of this application.

[0029] Among them: 11, First interface; 12, Second interface; 13, CC pin module; 131, Power supply component; 132, Control core component; 133, CC pull-up power supply component; 134, External device component; 135, GPIO control component; 14, System-on-a-chip; 15, Voltage bus module; 16, External device adapter module. Detailed Implementation

[0030] The embodiments of this application are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the embodiments of this application, and should not be construed as limiting the embodiments of this application.

[0031] Please see Figure 1 The Type-C functional circuit in this application embodiment is used for rechargeable electronic devices. The circuit includes a first interface, a second interface, a CC pin module, and a system-on-a-chip. Both the first interface and the second interface are connected to the system-on-a-chip through the CC pin module.

[0032] Specifically, "charging while the device is off" refers to a charging method where the device is powered on by a current source in the USB port without entering the operating system, even when the device is powered off. Because system power consumption is lower in this situation, the net power used to charge the battery is greater than in the case of charging while the device is powered on and the operating system is running, resulting in higher charging efficiency. Currently, USB interfaces on electronic devices are primarily Type-C. For a single USB Type-C interface that can simultaneously support charging and connecting external devices, only one function can be used at a time, preventing the simultaneous implementation of both functions.

[0033] If the USB Type-C interface that can simultaneously support charging and connecting external devices is split into two USB Type-C interfaces, one for charging and the other for connecting external devices, under the existing Type-C protocol, the CC pins of the two interfaces cannot be shared. As a result, the CC pins of the USB Type-C interface used for charging cannot be connected to the system-on-a-chip of the electronic device, and ultimately the two USB Type-C interfaces cannot perform charging and connecting external devices at the same time.

[0034] Therefore, to solve the above problems and enable the charging function and the external device connection function to be implemented simultaneously and independently, this application discloses a Type-C function circuit for a rechargeable electronic device. Please refer to... Figure 1 The circuit described above includes a first interface 11, a second interface 12, a CC pin module 13, and a system-on-chip (SOC) 14. Both the first interface 11 and the second interface 12 are USB Type-C interfaces, and they are connected to the same CC pin module 13, meaning they share a set of CC pins. The CC pin module 13 is then connected to the SOC.

[0035] In this way, the CC pin module 13 first connects the first interface 11 and the second interface 12 to the SOC through the aforementioned shared relationship. Furthermore, the CC pin module 13 can be controlled by the SOC through its connection with the SOC, allowing it to stop the CC pull-up process when the electronic device is powered on. This prevents data communication between the external device and the SOC from being interfered with by the charging process, thus ensuring the normal operation of the external device when the electronic device is running. For example, the external device can be a display under the DisplayPort interface protocol or other devices capable of display functions.

[0036] Thus, this application connects multiple Type-C interfaces on the device to the system-on-a-chip 14 via the same CC pin, so that one of the interfaces can be used to charge the electronic device when the device is triggered to start, and another interface can be used to connect to external devices and transmit information, thus avoiding interference from the charging interface to the connection of external devices.

[0037] Please refer to it again. Figure 1 In some implementations, the Type-C functional circuitry also includes a voltage bus module 15, through which the first interface 11 is connected to the system-on-a-chip 14. The voltage bus module 15 is configured to supply power to the electronic device when the CC pin module 13 triggers the CC pull-up operation.

[0038] Specifically, based on the above embodiments, for example, the first interface 11 is a USB Type-C interface used for charging. Considering the power-off charging function in the above embodiments, the first interface 11 is connected to the SOC not only through the CC pin module 13, but also through a Voltage Bus (VBUS) module. When the electronic device is in a power-off state, the user connects the charger to the first interface 11, the VBUS module starts working, and the CC pin module 13 triggers the CC pull-up working state. At this time, the electronic device is powered on but does not enter the power-off charging state without entering the operating system. The VBUS module delivers power from the charger to the electronic device to achieve charging.

[0039] Thus, this application enables the charging of electronic devices when the device is triggered to start by setting up a connection between the voltage bus and the first interface 11.

[0040] Please see Figure 2 In some embodiments, the circuit further includes an external device adapter module 16, through which the second interface 12 is connected to the system-on-a-chip 14. The external device adapter module 16 is also connected to the CC pin module 13. The external device adapter module 16 is configured to control the data transmission between the external device and the system-on-a-chip 14 to be unaffected by the charging process when the CC pin module 13 stops its CC pull-up operation.

[0041] Specifically, based on the above implementation method, the second interface 12 is exemplarily used as a USB Type-C interface for connecting external devices. Considering the function of connecting external devices in the above implementation method, the Type-C functional circuit also includes an external device adapter module 16. The connection between the second interface 12 and the CC pin module 13 is implemented by the external device adapter module 16. The connection between the external device adapter module 16 and the CC pin module 13 is achieved through the CC pin, while the connection between the external device adapter module 16 and the SOC is achieved through pins other than the CC pin. Under this configuration, when the electronic device completes its power-on process and the SOC controls the CC pin module 13 to stop the CC pull-up operation, data transmission and communication between the external device and the SOC will not be affected by the charging process.

[0042] Thus, this application achieves the connection between the external device and the system-on-a-chip 14 by setting the connection between the external device adapter module 16 and the second interface 12, thereby avoiding interference from the charging interface to the external device after the device is started.

[0043] In some implementations, the system-on-a-chip 14 is provided with a general-purpose input / output port, and the CC pin module 13 is also connected to the system-on-a-chip 14 through the general-purpose input / output port.

[0044] Specifically, based on the above implementation, considering the need to reduce interference with the operation of external devices after the electronic device starts normally, it is necessary to change the charging state triggered by the charger from a power-off state to a power-on state. Therefore, after the electronic device starts normally, the CC pull-up state of the CC pin module 13 needs to be turned off. Thus, exemplarily, the connection between the SOC and the CC pin module 13 should be able to control the CC pull-up state through general purpose input / output (GPIO) functions. Specifically, the SOC is provided with a general purpose input / output (GPIO) port, which is connected to the GPIO connection port on the CC pin module 13. When the device is currently in a power-off charging state, if the user controls the electronic device to power on and start the operating system, after the electronic device enters the operating system and completes the power-on startup, the SOC sends a control command to the CC pin module 13 through the GPIO port connection. After receiving the control command, the CC pin module 13 stops the CC pull-up state to change the charging state from power-off to power-on, thereby avoiding interference with the operation of external devices.

[0045] Thus, by setting the connection between the general-purpose input / output port and the CC pin module 13, this application enables the CC pull-up function of the CC pin module 13 to be turned off after the device has started up, thereby avoiding interference from the charging interface to external devices after the device has started up.

[0046] Please see Figure 3 In some implementations, the CC pin module 13 includes a power supply component 131 and a control core component 132, and the first interface 11 is connected to the input port of the control core component 132 through the power supply component 131.

[0047] Specifically, please refer to Figure 3 , Figure 3 The modular structure of the various components inside the CC pin module 13 is shown. The CC pin module 13 is used to act as the CC pin in the Type-C protocol. It includes a control core component 132, which is generally the core chip of the entire CC pin module 13. It includes at least an input port, an output port, an enable port, and an adjustment port.

[0048] For example, the CC pin module 13 includes a power supply component 131, one end of which is connected to the input port of the control core component 132, while the other end is connected to the first interface 11 in the above embodiment. During the charging process, the charger connects to the first interface 11, thereby introducing electrical energy from the external circuit into the electronic device through the path of charger-first interface 11-power supply component 131-control core component 132, and then further transferring the electrical energy from the control core component 132 to the power supply device of the electronic device.

[0049] Thus, the CC pin module 13 in this application introduces electrical energy from the charging interface by setting the power supply component 131 and the control core component 132 to realize the charging process of the electronic device.

[0050] In some implementations, the CC pin module 13 further includes a CC pull-up power supply component 133, which is connected to the output port and adjustment port of the control core component 132 and is connected to the system-on-a-chip 14. The CC pull-up power supply component 133 is configured to adjust and pull up the electrical signal output according to the electrical energy introduced by the power supply component 131.

[0051] Specifically, based on the above implementation, the CC pin module 13 further includes a CC pull-up power supply component 133. The main function of the CC pull-up power supply component 133 is to provide a CC pull-up working state when the electronic device is in a powered-off state and the charger is connected to the first interface 11, thereby realizing the powered-off charging process. It should be noted that the normal operation of the external device connected to the second interface 12 in the CC pull-up working state will be interfered with by the charging process. Furthermore, when the electronic device has completed its power-on startup and entered the operating system, the CC pin module 13 receives a control signal sent by the SOC. At this time, the CC pull-up power supply component 133 stops the above-mentioned CC pull-up working state, thereby switching the charging state to the power-on working state. At this time, the external device connected to the second interface 12 can operate normally without being interfered with by the power-on charging process. In terms of connection, the CC pull-up power supply component 133 is connected to the output port and adjustment port of the control core component 132. That is, the control core component 132 adjusts and pulls up the electrical signal output by the power supply component 131, thereby adjusting the charging current when the electronic device is charging, so that the charging current can be adapted to the power supply of the electronic device.

[0052] Thus, the CC pin module 13 in this application also uses a CC pull-up power supply component 133 to charge the electronic device using the power introduced from the charging interface.

[0053] In some implementations, the CC pin module 13 further includes an external device component 134, through which the second interface 12 is connected to the output port of the control core component 132.

[0054] Specifically, based on the above implementation, the CC pin module 13 further includes an external device component 134. The connection between the second interface 12 and the CC pin module 13 is achieved through the connection between the second interface 12 and the external device component 134. Further exemplarily, the connection between the second interface 12 and the CC pin module 13 is achieved through an external device adapter module 16 connected to the aforementioned external device component 134. The external adapter component is directly connected to the output port of the control core component 132. Under the above connection relationship, it is possible to ensure that the CC pin module 13 is shared by the first interface 11 and the second interface 12, and to maintain the connection and data communication between the external device and the electronic device normally when the CC pull-up working state is off.

[0055] Thus, in the CC pin module 13 of this application, an external device interface is connected to the CC pin module 13 by setting an external device component 134, thereby enabling the sharing of the CC pin between the charging interface and the external device interface.

[0056] In some implementations, the CC pin module 13 further includes a GPIO control component 135, which is connected to the general purpose input / output port of the system-on-a-chip 14 and to the enable port of the control core component 132. The GPIO control component 135 is configured to send a control signal to the enable port through the general purpose input / output port to control the CC pull-up power supply component 133 to stop the CC pull-up operation.

[0057] Specifically, based on the above implementation, the CC pin module 13 further includes a GPIO control component 135. The GPIO control component 135 is connected to the enable port of the control core component 132 on one hand, and to the GPIO port on the SOC on the other. When the electronic device boots up and enters the operating system, the SOC sends control commands based on the GPIO protocol to the CC pin module 13 through the connection with the GPIO control component 135. On the CC pin module 13 side, the GPIO control component 135 receives the control commands through its connection with the GPIO port on the SOC, performs preliminary circuit processing on the control commands, and then transmits them to the enable port of the control core component 132. After receiving the processed control signal at the enable port, the control core component 132 controls the CC pull-up power supply component 133 to stop the CC pull-up operation based on the adjustment port and output port, thereby completing the transition from the power-off charging state to the power-on charging state and avoiding interference with the normal operation of external devices during the charging process.

[0058] Thus, in the CC pin module 13 of this application, the GPIO control component 135 is set to turn off the CC pull-up power supply component 133 to stop the charging process when the device is started up, thereby avoiding interference with the operation of the external device connected to the external device interface during the charging process.

[0059] In some implementations, the external device adapter module 16 of the circuit is connected to the output port of the control core component 132 via the external device component 134, wherein the external device adapter module 16 includes a voltage bus device for configuring the voltage of the external device.

[0060] For example, as in the above embodiments, the external device component 134 in the CC pin module 13 is connected to the external device adapter module 16 in the Type-C functional circuit to achieve the purpose of sharing the CC pin with the charging interface when an external device is connected. The main function of the external device adapter module 16 is to maintain the connection between the external device and the electronic device, and to maintain the operating state of the external device during connection. This maintenance process includes power supply and data transmission from the electronic device to the external device.

[0061] As a further example, the external device adapter module 16 includes a voltage bus device for providing power from the electronic device to the external device. This voltage bus device is directly connected to the external device component 134 in the CC pin module 13. When the external device is connected to the electronic device through the second interface 12, the electronic device directly provides all or part of the power to the external device via the USB Type-C interface through the voltage bus device, thereby maintaining the normal operation of the external device when connected to the electronic device.

[0062] Thus, the external device connected to the Type-C functional circuit in this application can also be configured with a voltage bus through the external device adapter module 16 in the Type-C functional circuit to meet the power supply requirements of the electronic device when the external device is connected to the electronic device.

[0063] Please see Figure 4 (a) and Figure 4 (b), Figure 4 This paper illustrates a specific implementation of the Type-C functional circuit described above from a circuit principle perspective. The types, models, and circuit parameters of the circuit components used in each part can be selected and adjusted according to actual conditions. Figure 4 The specific circuit connection method shown, as well as the circuit components, models, and circuit parameters marked, are only examples and should not be interpreted as limitations on the specific circuit structure and circuit components inside the CC pin module.

[0064] Please see Figure 4 (a) Exemplarily, the power supply component 131 and the GPIO control component can be isolated by setting a resistor. The control core component, power supply component, GPIO control component, and CC pull-up power supply component are all grounded to protect the power supply safety of the above components when charging and connecting external devices to electronic devices. The control core component is provided with input port IN (pin 1), output port OUT (pin 5), enable port EN (pin 3), adjustment port ADJ (pin 4), and ground port GND (pin 2). The power supply component is connected to input port IN (pin 1), the GPIO control component is connected to enable port EN (pin 3), the CC pull-up power supply component is connected to adjustment port ADJ (pin 4) and output port OUT (pin 5), and ground port GND (pin 2) is used for grounding.

[0065] Specifically, the PD_USB-C_15V point in the power supply component connects to the first interface, serving as the point where power is drawn from the charger during charging. The VBATT point connects to the power supply of the electronic device to power the CC pin module. The SG560D_GPIO191_VBUS-5V_EN point in the GPIO control component connects to the GPIO port of the SOC, through which the CC pin module receives corresponding control signals from the SOC. The DP_VBUS point in the external device component connects to the external device adapter module in the Type-C functional circuit, where the voltage bus devices in the external device adapter module also connect to the CC pin module via this point.

[0066] Specifically, for the CC pull-up power supply component, Figure 4 The part within the corresponding rectangle in (a) and Figure 4(b) shows circuit structures that are all components of the CC pull-up power supply assembly, in which Figure 4 (a) shown portion and Figure 4 In the portion shown in (b), PD_USB-C_5V is the same point, while... Figure 4 The USB0_CC1 point shown in (b) is connected to the CC port corresponding to the CC pin on the SOC.

[0067] The electronic device in the embodiments of this application includes the Type-C functional circuit described above.

[0068] In the description of this specification, the references to terms such as "some embodiments," "in one example," "exemplarily," etc., indicate that a specific feature, structure, material, or characteristic described in connection with an embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0069] Any process or method described in the flowchart or otherwise herein can be understood as representing a module, segment, or portion of code comprising one or more executable instructions for implementing a particular logical function or process, and the scope of the preferred embodiments of this application includes additional implementations in which functions may be performed not in the order shown or discussed, including substantially simultaneously or in reverse order depending on the function involved, as will be understood by those skilled in the art to which embodiments of this application pertain.

[0070] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A Type-C function circuit, characterized in that, The circuit is used in a chargeable electronic device, and the circuit comprises a first interface, a second interface, a CC pin module, and a system-level chip.

2. The circuit of claim 1, wherein, The circuit further comprises a voltage bus module, the first interface is connected to the system-level chip through the voltage bus module, and the voltage bus module is configured to supply power to the electronic device when the CC pin module triggers a CC pull-up working state.

3. The circuit of claim 1, wherein, The circuit further comprises an external device adaptation module, the second interface is connected to the system-level chip through the external device adaptation module, the external device adaptation module is further connected to the CC pin module, and the external device adaptation module is configured to control data transmission between the external device and the system-level chip to be free from the charging process when the CC pin module stops the CC pull-up working state.

4. The circuit of claim 1, wherein, The system-level chip is provided with a general input and output port, and the CC pin module is further connected to the system-level chip through the general input and output port.

5. The circuit of claim 1, wherein, The CC pin module comprises a power supply component and a control core component, and the first interface is connected to an input port of the control core component through the power supply component.

6. The circuit of claim 5, wherein, The CC pin module further comprises a CC pull-up power supply component, the CC pull-up power supply component is connected to an output port and an adjustment port of the control core component, and the CC pull-up power supply component is connected to the system-level chip, and the CC pull-up power supply component is configured to adjust and pull up an electrical signal output according to power introduced by the power supply component.

7. The circuit of claim 5, wherein, The CC pin module further comprises an external device component, and the second interface is connected to an output port of the control core component through the external device component.

8. The circuit of claim 5, wherein, The CC pin module further comprises a GPIO control component, the GPIO control component is connected to a general input and output port of the system-level chip, and the GPIO control component is connected to an enable port of the control core component, and the GPIO control component is configured to send a control signal to the enable port through the general input and output port to control the CC pull-up power supply component to stop the CC pull-up working state.

9. The circuit of claim 7, wherein, The external device adaptation module of the circuit is connected to an output port of the control core component through the external device component, and the external device adaptation module comprises a voltage bus device for configuring a voltage of an external device.

10. An electronic device, comprising: The electronic device comprises the Type-C functional circuit according to any one of claims 1-9.

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