WIFI module supporting hopping communication between USB interface and SDIO interface

Abstract

The utility model discloses a WIFI (Wireless Fidelity) module supporting jump selection communication of a USB (Universal Serial Bus) interface and an SDIO (Secure Digital Input Output) interface, which comprises a PCB (Printed Circuit Board) provided with the USB interface and the SDIO interface, and a main control chip carried on the surface of the PCB, a first resistor, a second resistor, a third resistor and a fourth resistor are carried on the PCB; one end of the first resistor is coupled with the main control chip through a transmission pin, and the other end of the first resistor is coupled with the ground; one end of the second resistor is coupled with a coding pin of the main control chip, and the other end of the second resistor is preset to be connected with a coding pin of the main control board; one end of the third resistor and one end of the fourth resistor are coupled with the power input pin of the main control chip, and the other ends are used for reserving coupling preset voltage; technicians reasonably select the first resistor, the second resistor, the third resistor and the fourth resistor for matching, so that the function construction of the USB interface and the SDIO interface is realized, the compatibility of the WIFI module is improved, and the production cost is effectively reduced.

Description

Technical Field

[0001] The utility model relates to the field of radio frequency communication, in particular to a WIFI module supporting jump-select communication of a USB interface and a SDIO interface. Background Art

[0002] The development of wireless network technology is an important direction in the field of communications. It has greatly promoted the informatization process of modern society. At present, more and more electronic instruments or electronic products are equipped with wireless communication functions, with a smaller size and wireless trend. Among them, wireless interconnection between various electronic terminals is achieved through WIFI modules;

[0003] In the prior art, there is a WIFI module. In order to support common transmission protocols on the market, the USB interface and the SDIO interface need to be divided into two models for driving, that is, one model of the WIFI module cannot be compatible with and select one to activate the USB interface or the SDIO (Secure Digital Input and Output) interface according to actual conditions. The above situation has low versatility and significantly increases the material cost. Therefore, a WIFI module with a more reasonable structure is continued to solve the above technical problems. Utility Model Content

[0004] Aiming at the technical problem in the prior art that the same model of WIFI module cannot be compatible with and select one of the USB interface or the SDIO interface to activate according to actual conditions, and the versatility is low, resulting in increased material costs, the utility model provides a solution.

[0005] To achieve the above-mentioned object, the utility model provides a WIFI module supporting USB interface and SDIO interface jump selection communication, comprising a PCB board provided with a USB interface and an SDIO interface, and a main control chip mounted on the surface of the PCB board; wherein the PCB board is equipped with a first resistor, a second resistor, a third resistor and a fourth resistor; wherein the PCB board is equipped with a first resistor, a second resistor, a third resistor and a fourth resistor;

[0006] One end of the first resistor is coupled to the transmission pin of the main control chip, and the other end is coupled to the ground;

[0007] One end of the second resistor is coupled to the encoding pin of the main control chip, and the other end is preset to be connected to the encoding pin of the main control board;

[0008] One end of the third resistor is coupled to the power input pin of the main control chip, and the other end is reserved for coupling to the first preset voltage;

[0009] One end of the fourth resistor is coupled to a connection point formed between the third resistor and the power input pin, and the other end is reserved for coupling to the second preset voltage.

[0010] As an improved solution of the present application, the resistance of the first resistor is 10,000 ohms.

[0011] As an improved solution of the present application, the resistance of the second resistor is 0 ohm.

[0012] As an improved solution of the present application, the resistance of the third resistor is 0 ohm.

[0013] As an improved solution of the present application, the resistance of the fourth resistor is 0 ohm.

[0014] As an improvement scheme of the present application, the model of the main control chip is WQ9101.

[0015] As an improved solution of the present application, the first preset voltage is 3.3V.

[0016] As an improved solution of the present application, the second preset voltage is 1.8V.

[0017] The beneficial effects of the utility model are as follows: compared with the prior art, the utility model provides a WIFI module supporting USB interface and SDIO interface jump communication, comprising a PCB board provided with a USB interface and an SDIO interface, and a main control chip mounted on the surface of the PCB board; wherein, the PCB board is equipped with a first resistor, a second resistor, a third resistor and a fourth resistor; one end of the first resistor is coupled to a transmission pin of the main control chip, and the other end is coupled to the ground; one end of the second resistor is coupled to an encoding pin of the main control chip, and the other end is preset to be connected to an encoding pin of the main control board; one end of the third resistor is coupled to a power input pin of the main control chip, and the other end is used to reserve coupling to a first preset voltage; one end of the fourth resistor is coupled to a connection point formed between the third resistor and the power input pin, and the other end is used to reserve coupling to a second preset voltage; the technician reasonably selects the first resistor, the second resistor, the third resistor and the fourth resistor to match, so as to realize the construction of the USB interface and the SDIO interface functions, thereby improving the compatibility of the WIFI module and effectively reducing the production cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the main control chip connection of the utility model;

[0019] Figure 2 This is a related pin definition diagram of the utility model.

[0020] The main component symbols are described as follows:

[0021] R1, a first resistor; R2, a second resistor; R3, a third resistor; R4, a fourth resistor. DETAILED DESCRIPTION

[0022] In order to more clearly illustrate the present invention, the present invention is further described below in conjunction with the accompanying drawings.

[0023] In the following description, the example details are given to provide a deeper understanding of the utility model. Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all the embodiments. It should be understood that the specific embodiments are only used to explain the utility model, and are not used to limit the utility model.

[0024] It should be understood that when the terms "include" and / or "comprises" are used in this specification, they indicate the existence of the stated features, integers, steps, operations, elements or components, but do not exclude the existence or addition of one or more other features, integers, steps, operations, elements, components or combinations thereof.

[0025] In the prior art, there is a WIFI module. In order to support common transmission protocols on the market, the USB interface and the SDIO interface need to be divided into two models for driving. That is, one model of WIFI module cannot be compatible with and selectively activate the USB interface or the SDIO interface according to actual conditions. The above situation has low versatility and significantly increases the material cost. Therefore, a WIFI module with a more reasonable structure is continued to solve the above technical problems.

[0026] In order to solve the above technical problems, this application provides a WIFI module that supports USB interface and SDIO interface jump communication, please refer to the attached Figure 1 To Attachment Figure 2 , including a PCB board provided with a USB interface and an SDIO interface, and a main control chip mounted on the surface of the PCB board; wherein the PCB board is equipped with a first resistor R1, a second resistor R2, a third resistor R3 and a fourth resistor R4; one end of the first resistor R1 is coupled to the transmission pin of the main control chip, and the other end is coupled to the ground; one end of the second resistor R2 is coupled to the encoding pin of the main control chip, and the other end is preset to be connected to the encoding pin of the main control board; one end of the third resistor R3 is coupled to the power input pin of the main control chip, and the other end is used to reserve coupling to the first preset voltage; one end of the fourth resistor R4 is coupled to the connection point formed between the third resistor R3 and the power input pin, and the other end is used to reserve coupling to the second preset voltage;

[0027] For a better explanation of this application, please refer to Figure 2It can be seen that after the improvement, the USB interface is located at pins 33 and 32 of the module; the SDIO interface is located at pins 19-22;

[0028] In a specific solution, for example, when the user needs to build a USB interface communication function on the product: the technician selects the third resistor R3 and the first resistor R1, and does not assemble the second resistor R2 and the second resistor R4. The module pins define PIN28 and PIN34 (i.e., pins 28 and 34) as NC. After the power input pin of the main control chip is connected to the first expected voltage, the main control chip can be started, and the first resistor R1 plays a pull-down role. Although the USB interface has corresponding related pins connected to the WIFI module, these pins will form a suspended state under the cooperation of the third resistor R3 and the first resistor R1, thereby ensuring that no electrical signal disorder occurs;

[0029] When the user builds the SDIO interface communication on the product, the technician selects the second resistor R2 and the fourth resistor R4. At this time, it can be understood that the first resistor R1 is in a disconnected state, and the internal pull-up of the main control chip can activate the SDIO interface; due to the installation of the fourth resistor R4, the VIO power supply of the main control chip is provided by the module pin 34, so that VIO can choose 1.8V or 3.3V; in actual testing, in the SDIO interface mode, pins 31 and 32 will not affect the startup and operation of the module, that is, the USB interface will not affect the operation of the SDIO interface.

[0030] It can be seen that the technicians reasonably select the first resistor R1, the second resistor R2, the third resistor R3 and the fourth resistor R4 to realize the construction of the USB interface and the SDIO interface function, thereby improving the compatibility of the WIFI module and effectively reducing the production cost; at the same time, the manufacturing test fixture can be shared, which also reduces the production cost.

[0031] In the specific solution, the resistance of the first resistor R1 is 10000 ohms; the resistance of the second resistor R2 is 0 ohms; the resistance of the third resistor R3 is 0 ohms; the resistance of the fourth resistor R4 is 0 ohms; a reasonable combination is selected to achieve a short-circuit effect to select the use of the USB interface and the SDIO interface.

[0032] In the specific solution, the model of the main control chip is WQ9101; the first preset voltage is 3.3V; and the second preset voltage is 1.8V.

[0033] The advantages of the utility model are:

[0034] 1. The technicians reasonably selected the first resistor, the second resistor, the third resistor and the fourth resistor to realize the construction of the USB interface and the SDIO interface function, thereby improving the compatibility of the WIFI module and effectively reducing the production cost;

[0035] 2. Since the WIFI module is compatible with the USB interface and the SDIO interface, the manufacturing test fixture can be shared, which also reduces the production cost.

[0036] The above disclosures are only several specific embodiments of the present invention, but the present invention is not limited thereto, and any changes that can be conceived by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. A WIFI module supporting USB interface and SDIO interface jump communication, characterized in that: It includes a PCB board provided with a USB interface and an SDIO interface, and a main control chip mounted on the surface of the PCB board; wherein the PCB board is equipped with a first resistor, a second resistor, a third resistor and a fourth resistor; One end of the first resistor is coupled to the transmission pin of the main control chip, and the other end is coupled to the ground; One end of the second resistor is coupled to the encoding pin of the main control chip, and the other end is preset to be connected to the encoding pin of the main control chip; One end of the third resistor is coupled to the power input pin of the main control chip, and the other end is reserved for coupling to the first preset voltage; One end of the fourth resistor is coupled to a connection point formed between the third resistor and the power input pin, and the other end is reserved for coupling to a second preset voltage.

2. The WIFI module supporting USB interface and SDIO interface jump communication according to claim 1, characterized in that: The resistance of the first resistor is 10000 ohms.

3. The WIFI module supporting USB interface and SDIO interface jump communication according to claim 1, characterized in that: The resistance of the second resistor is 0 ohm.

4. The WIFI module supporting USB interface and SDIO interface jump communication according to claim 1, characterized in that: The resistance of the third resistor is 0 ohm.

5. The WIFI module supporting USB interface and SDIO interface jump communication according to claim 1, characterized in that: The resistance of the fourth resistor is 0 ohm.

6. The WIFI module supporting USB interface and SDIO interface jump communication according to any one of claims 1-5, characterized in that: The model of the main control chip is WQ9101.

7. The WIFI module supporting USB interface and SDIO interface jump communication according to claim 6, characterized in that: The first preset voltage is 3.3V.

8. The WIFI module supporting USB interface and SDIO interface jump communication according to claim 7, characterized in that: The second preset voltage is 1.8V.

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