Dual type-c support apparatus of mtk platform and electronic device

Abstract

The utility model provides a kind of dual type-c supporting device of MTK platform and electronic equipment, it is related to electronic interface technical field, the device adds a switching module and extension module on data path, the output of control level controls the gating of switching module, so that MTK platform changes from only being able to support one type-c to support two type-c, to support the demand of current market to multiple type-c.

Description

Technical Field

[0001] This utility model relates to the field of electronic interface technology, specifically to a dual Type-C support device and electronic device for the MTK platform. Background Technology

[0002] In the current mobile smart terminal and consumer electronics market, the demand for differentiated functions is increasing. The Type-C interface, with its reversible plug capability, high-speed data transmission, and high-power power supply, has become a standard feature in mid-to-high-end products. However, the integration level of the MTK (MediaTek) platform lags far behind market demands. Its mainstream SoCs typically only provide a single USB-OTG controller at the hardware integration level, and their native pin resources can only meet the deployment requirements of a single full-featured Type-C port. This severely limits product form factors and prevents the use of this function. When OEMs want to further expand to a dual Type-C form factor to achieve differentiated selling points such as "simultaneous connection of external USB flash drives / keyboards and charging" or "symmetrical interfaces," they encounter platform resource bottlenecks: the SoC neither reserves a second USB controller nor provides additional DP / DM differential pairs, resulting in the inability to implement a second interface at either the physical or protocol layers.

[0003] In existing technologies, the industry typically replaces the platform with a high-end platform equipped with dual USB controllers. However, this requires a reassessment of power supply, heat dissipation, BOM costs, and software compatibility, which is both time-consuming and expensive. Therefore, how to achieve "dual Type-C coexistence without interference" on a single USB controller MTK platform with minimal hardware cost has become a pressing technical challenge in this field.

[0004] In view of the above, this application is hereby submitted. Utility Model Content

[0005] In the process of implementing this utility model, the inventors discovered that by simply using a USB Hub chip to expand a single USB port into multiple Type-A ports, the Hub solution only solves the problem of "number of interfaces" and fails to meet the requirement of "two full-function Type-C ports". Furthermore, the Hub's downstream port cannot independently assume the role of Host / OTG, and it lacks management of the CC channel (Configuration Channel), making it impossible to dynamically switch between power supply roles (Source / Sink). In practical applications, it remains limited.

[0006] The inventors further discovered that when two Type-C ports are present at the same time, the VBUS power supply direction may conflict: for example, the main port is plugged into a computer (Device mode, power is supplied from the outside to the whole machine), and the secondary port is plugged into a USB flash drive (Host mode, power is supplied from the whole machine to the outside). If there is a lack of hardware-level isolation and direction control, serious faults such as current backflow, OTG handshake failure, and even system restart will occur.

[0007] Based on this, the present invention provides a dual Type-C support device and electronic device for the MTK platform, which can at least partially improve the above-mentioned problems.

[0008] To achieve the above objectives, the present invention adopts the following technical solution: A dual Type-C support device for an MTK platform includes: a switching module, an expansion module, a main Type-C interface, a secondary Type-C interface, and a power module. The input terminal of the switching module is electrically connected to the output terminal of the MTK platform. The output terminal of the switching module is electrically connected to the input terminal of the main Type-C interface and the input terminal of the expansion module. The output terminal of the expansion module is electrically connected to the input terminal of the secondary Type-C interface. The output terminal of the power module is electrically connected to the power terminals of the expansion module, the main Type-C interface, and the secondary Type-C interface. The switching module is configured to switch between the main Type-C interface circuit and the secondary Type-C interface circuit; the expansion module is configured to divide the data transmitted by the MTK platform into multiple downlink port data and connect them to the secondary Type-C interface as the data channel of the secondary Type-C interface.

[0009] This utility model also provides an electronic device, which includes: a device body, an MTK platform, and a dual Type-C support device for the MTK platform as described in any one of the above, wherein the dual Type-C support device for the MTK platform is located on the device body, and the input terminal of the switching module is electrically connected to the output terminal of the MTK platform.

[0010] In summary, the dual Type-C support device for the MTK platform, through the collaborative work of a switching module, an expansion module, a main Type-C interface, a secondary Type-C interface, and a power module, overcomes the bottlenecks of traditional MTK platform native resources while also considering size, cost, and reliability. Specifically, the device adds a USB switching IC and a USB hub IC, enabling the platform to support two Type-C ports instead of just one, thus meeting the current market demand for multiple Type-C ports. This allows for "zero-platform migration" to achieve dual Type-C coexistence on existing MTK hardware architectures, significantly shortening development cycles and reducing BOM costs, providing a rapid technical path for differentiated product forms. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the frame of the dual Type-C support device for the MTK platform provided in this embodiment of the utility model; Figure 2 This is a schematic diagram of the switching module provided in an embodiment of the present utility model; Figure 3 This is a schematic diagram of the extension module provided in this embodiment of the utility model; Figure 4 This is a schematic diagram of the power supply processing section provided in an embodiment of this utility model; Figure 5 This is a schematic diagram of the power module provided in an embodiment of the present utility model; Figure 6 This is a circuit diagram of the main Type-C port provided in this embodiment of the present invention; Figure 7 This is a circuit diagram of the secondary Type-C provided in this embodiment of the utility model. Detailed Implementation

[0012] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0013] refer to Figures 1 to 7As shown, the first embodiment of this utility model discloses a dual Type-C support device for the MTK platform, which includes: a switching module, an expansion module, a main Type-C interface, a secondary Type-C interface, and a power module. The input terminal of the switching module is electrically connected to the output terminal of the MTK platform, the output terminal of the switching module is electrically connected to the input terminal of the main Type-C interface and the input terminal of the expansion module, the output terminal of the expansion module is electrically connected to the input terminal of the secondary Type-C interface, and the output terminal of the power module is electrically connected to the power terminals of the expansion module, the main Type-C interface, and the secondary Type-C interface. The switching module is configured to switch between the main Type-C interface circuit and the secondary Type-C interface circuit; the expansion module is configured to divide the data transmitted by the MTK platform into multiple downlink port data and connect them to the secondary Type-C interface as the data channel of the secondary Type-C interface.

[0014] Preferably, the switching module is further configured such that when the secondary Type-C interface is inserted, the detection pin is at a low level, switching to the secondary Type-C interface circuit; and when the secondary Type-C interface is not inserted, the detection pin is at a high level, switching to the primary Type-C interface circuit.

[0015] Preferably, the switching module is a USB 2.0 high-speed analog switch or a multiplexer.

[0016] Preferably, the expansion module is a USB-HUB chip, and its chip model can be USB 2.0 Hub.

[0017] Specifically, in this embodiment, since the Hub IC itself does not "transform" into two complete Type-C ports, it merely expands the original single USB signal of the MTK platform into multiple ports. However, it cannot determine whether the "secondary Type-C" interface is a host or a device. Therefore, this device uses a switching module. When the secondary Type-C is inserted, the detection pin (IDDIG) is 0. At this time, the operation USB_S pin is pulled high, and the switch usbdpdm switches to host-only mode for the hub IC. The secondary Type-C can only act as a host, supplying power to peripherals and reading / writing data, while the primary Type-C still retains the native OTG capability of MTK (i.e., switching to the secondary Type-C interface circuit, which is the reverse circuit). When the secondary Type-C is removed, the detection pin (IDDIG) is 1. At this time, the operation USB_S pin is pulled low, and the switch usbdpdm switches to device mode for the primary Type-C, allowing it to act as either a host or a device (i.e., switching to the primary Type-C interface circuit).

[0018] Furthermore, since the MTK platform only has one USB 2.0 OTG port, this single USB 2.0 port is connected to the uplink port of the Hub IC (i.e., the expansion module). Internally, the Hub IC splits this into multiple downlink ports, serving as a "secondary Type-C" data channel. The Hub end uses a single hub IC, powered by 5V. The hub IC's DM0 / DM1 terminals are connected to the DP / DM switches of the previously used switching IC, allowing multiple devices to connect. This device uses DP2 and DM2. Thus, the functionality remains usable even when the secondary Type-C port is inserted.

[0019] in, Figure 7 This is a schematic diagram of the secondary Type-C interface. DP2 and DM2 are connected to the Type-C DP / DM, EINT7_ID is connected to the Type-C CC1 / CC2, and KB_5V is connected to the Type-C VBUS.

[0020] A USB hub is a device that can expand a single USB port into multiple USB ports, allowing a host computer to connect to multiple devices simultaneously. It is typically used when a computer lacks sufficient USB ports, allowing the connection of more external USB devices, such as USB flash drives, MP3 players, and digital cameras. It should be noted that other types of expansion modules may be used in other embodiments; these are not specifically limited here, but all such solutions are within the protection scope of this utility model.

[0021] Preferably, the control terminal of the power module is connected to the operation switch terminal of the MTK platform. When the operation switch terminal is at a high level, the power module is turned on to supply power, and when the operation switch terminal is at a low level, the power module is turned off to supply power, so as to prevent Vbus current backflow.

[0022] Specifically, in this embodiment, the GPIO operation controls the enable of the 5V output function to power the hub IC (USB_HUB1_5V) and the secondary Type-C port (KB_5V). This circuit mainly prevents VBus current backflow through GPIO operation. It's important to note that while the VBus power supply principle here distinguishes between TYPE_C_VBUS and VBUS_IN, in practice, VBus is not differentiated; the difference lies only in the form of (input) 5V (e.g., charging with a charger, connecting to a computer) and (output) 5V (powering external devices such as OTG devices like mice and USB flash drives).

[0023] VBUS_IN is connected to the MTK CPU and is used by the system to detect the presence of VBus. VBUS_IN and TYPE_C_VBUS also have circuitry. GPIO171 is an operation switch to prevent VBus current backflow. When GPIO171 is high, UD9 is on, allowing power to be supplied via TYPE-C_C_VBUS; when GPIO171 is low, UD9 is off, stopping power supply to TYPE-C_C_VBUS. For example, if a Type-C device is plugged into the primary Type-C port (acting as a device) and another Type-C device is plugged into the secondary Type-C port (acting as a USB flash drive host), there will be a VBus direction conflict, as one port supplies power to the system while the other supplies power externally. Therefore, circuitry is needed to prevent this conflict. This design allows both Type-C ports to operate simultaneously without interference or malfunction.

[0024] In summary, the dual Type-C support device for the MTK platform aims to transform the MTK platform's single Type-C port into a dual Type-C port, thereby meeting the current market demand for multiple Type-C ports. Specifically, because the MTK platform only supports one USB DPDM port, this device utilizes a switch IC to switch between the platform's USB ports. When the USB_S level is low, only the primary Type-C port is used, allowing it to function as both a device and a host. When the USB_S level is high, the device switches to the hub IC, allowing the secondary Type-C port to be used as a host.

[0025] A second embodiment of the present invention provides an electronic device, comprising: a device body, an MTK platform, and a dual Type-C support device for the MTK platform as described in any one of the above embodiments, wherein the dual Type-C support device for the MTK platform is located on the device body, and the input terminal of the switching module is electrically connected to the output terminal of the MTK platform.

[0026] Preferably, the device further includes an indicator light module, wherein the output terminal of the device body is electrically connected to the input terminal of the indicator light module.

[0027] Specifically, in this embodiment, the indicator module can be an LED indicator, electrically connected to the output terminal of the device body. This allows the device body to control the LED indicator to produce corresponding light prompts when it detects a preset abnormal situation, such as a device malfunction or problem; for example, rapid flashing may indicate that the device is initializing, while slow flashing may indicate that the device has encountered an error. This visual prompt provides users with an intuitive way to identify and respond to system status, enhancing the user experience.

[0028] Furthermore, LED indicator lights are an ideal choice due to their low power consumption, fast response, and long lifespan. In this embodiment, the LED indicator lights are used not only to indicate the system status but also to warn the user of possible abnormalities, such as data transmission errors, system overload, or hardware failures. It should be noted that other types of indicator light modules can be used in other embodiments, which are not specifically limited here, but all of these solutions are within the protection scope of this utility model.

[0029] Preferably, the device further includes a sound warning module, wherein the output terminal of the device body is electrically connected to the input terminal of the sound warning module.

[0030] Specifically, in this embodiment, the sound warning module can be a buzzer, electrically connected to the output terminal of the device body. When the device body detects a preset abnormal situation, such as a malfunction in a laptop, it controls the buzzer to produce a corresponding sound prompt. Buzzers, with their simplicity, low cost, and ease of integration, are an ideal choice. In this embodiment, the buzzer is used not only to indicate the system status but also to warn the user of possible abnormal situations, such as data transmission errors, system overload, or hardware failure. It should be noted that other types of sound warning modules can be used in other embodiments; no specific limitation is made here, but all such solutions are within the protection scope of this utility model.

[0031] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications are also considered to be within the protection scope of this utility model.

Claims

1. A dual Type-C support device for the MTK platform, characterized in that, include: The system includes a switching module, an expansion module, a main Type-C interface, a secondary Type-C interface, and a power module. The input terminal of the switching module is electrically connected to the output terminal of the MTK platform. The output terminal of the switching module is electrically connected to the input terminal of the main Type-C interface and the input terminal of the expansion module. The output terminal of the expansion module is electrically connected to the input terminal of the secondary Type-C interface. The output terminal of the power module is electrically connected to the power terminals of the expansion module, the main Type-C interface, and the secondary Type-C interface. The switching module is configured to switch between the main Type-C interface circuit and the secondary Type-C interface circuit; the expansion module is configured to divide the data transmitted by the MTK platform into multiple downlink port data and connect them to the secondary Type-C interface as the data channel of the secondary Type-C interface.

2. The dual Type-C support device for the MTK platform according to claim 1, characterized in that, Also includes: The switching module is configured such that when the secondary Type-C interface is inserted, the detection pin is at a low level, switching to the secondary Type-C interface circuit; when the secondary Type-C interface is not inserted, the detection pin is at a high level, switching to the primary Type-C interface circuit.

3. The dual Type-C support device for the MTK platform according to claim 1, characterized in that, The switching module is a USB 2.0 high-speed analog switch or a multiplexer.

4. The dual Type-C support device for the MTK platform according to claim 1, characterized in that, The expansion module is a USB-HUB chip, specifically a USB 2.0 Hub chip.

5. The dual Type-C support device for the MTK platform according to claim 1, characterized in that, The control terminal of the power module is connected to the operation switch terminal of the MTK platform. When the operation switch terminal is at a high level, the power module is turned on to supply power, and when the operation switch terminal is at a low level, the power module is turned off to prevent Vbus current backflow.

6. An electronic device, characterized in that, include: The device body, the MTK platform, and the dual Type-C support device for the MTK platform as described in any one of claims 1 to 5, wherein the dual Type-C support device for the MTK platform is located on the device body, and the input terminal of the switching module is electrically connected to the output terminal of the MTK platform.

7. The electronic device according to claim 6, characterized in that, It also includes an indicator light module, wherein the output terminal of the device body is electrically connected to the input terminal of the indicator light module.

8. The electronic device according to claim 6, characterized in that, It also includes a sound warning module, wherein the output terminal of the device body is electrically connected to the input terminal of the sound warning module.

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