Communication interface module and terminal equipment

Abstract

The utility model discloses a communication interface module and terminal equipment, and relates to the technical field of communication, and the communication interface module is characterized in that after a wireless communication chip and a cellular communication chip are integrated on the communication interface module, the wireless communication chip and the cellular communication chip are connected with the same group of golden fingers through a switching device; therefore, the communication interface module can dynamically switch wireless communication and cellular communication according to requirements, a signal path of one communication chip is closed when the communication interface module is not needed, signal interference is reduced, signal stability and communication quality are guaranteed, the number of needed modules and mainboard space are reduced due to the integrated design and the use of the switching device, and the cost is reduced. The main board space is optimized, only one module needs to be arranged, compared with the conventional mode that two communication modules need to be arranged on the main board, the wiring design on the main board is simplified, and the development cost of terminal equipment is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the communication technical field, and particularly relates to a communication interface module and a terminal device. BACKGROUND

[0002] At present, the mobile network connection and the wireless local area network / Bluetooth connection on the terminal device are realized by installing the cellular communication module and the wireless communication module on the mainboard of the device respectively, so as to realize the diversified communication function of the terminal device.

[0003] However, the design scheme usually needs to reserve sufficient installation space on the mainboard to ensure the integrity and anti-interference of the signals transmitted by the cellular communication module and the wireless communication module, and to ensure that the signal transmission lines between the two communication modules are clear and efficient, and to consider the electromagnetic compatibility problem, which causes the mainboard wiring to be complex, and causes the overall development cost of the terminal device to rise.

[0004] The above content is only used to assist in understanding the technical scheme of the present application, and does not represent the acknowledgement of the above content as prior art. UTILITY MODEL CONTENT

[0005] The main purpose of the present application is to provide a communication interface module and a terminal device, which aims to solve the technical problem of how to optimize the mainboard space while ensuring the diversified communication function of the terminal device and reducing the development cost of the terminal device.

[0006] In order to achieve the above purpose, the present application provides a communication interface module, which integrates a wireless communication chip and a cellular communication chip, and is provided with a plurality of switching devices;

[0007] One end of each switching device is connected with a wireless data transmission pin of the wireless communication chip and a cellular data transmission pin of the cellular communication chip respectively, and the other end of each switching device is connected with a gold finger of the communication interface module.

[0008] In an embodiment, the switching device is a single-pole double-throw switch.

[0009] The first switching end of the single-pole double-throw switch is connected with the wireless data transmission pin of the wireless communication chip via a wireless differential line, the second switching end of the single-pole double-throw switch is connected with the cellular data transmission pin of the cellular communication chip via a cellular differential line, and the common end of the single-pole double-throw switch is connected with the gold finger of the communication interface module via a common differential line.

[0010] In an embodiment, in the case that the communication interface module supports the high-speed serial computer expansion bus standard and the serial bus standard, the switch device comprises a first single-pole double-throw switch, a second single-pole double-throw switch, a third single-pole double-throw switch, a fourth single-pole double-throw switch, a fifth single-pole double-throw switch, and a sixth single-pole double-throw switch;

[0011] The common terminal of the first single-pole double-throw switch is connected to the differential reference clock positive pin on the gold finger through a first common differential line;

[0012] The common terminal of the second single-pole double-throw switch is connected to the differential reference clock negative pin on the gold finger through a second common differential line;

[0013] The common terminal of the third single-pole double-throw switch is connected to the receiver positive pin on the gold finger through a third common differential line;

[0014] The common terminal of the fourth single-pole double-throw switch is connected to the receiver negative pin on the gold finger through a fourth common differential line;

[0015] The common terminal of the fifth single-pole double-throw switch is connected to the transmitter positive pin on the gold finger through a fifth common differential line;

[0016] The common terminal of the sixth single-pole double-throw switch is connected to the transmitter negative pin on the gold finger through a sixth common differential line;

[0017] The common differential lines comprise the first common differential line, the second common differential line, the third common differential line, the fourth common differential line, the fifth common differential line, and the sixth common differential line.

[0018] In an embodiment, the impedance matching of the common differential lines is within a preset impedance matching range;

[0019] The preset impedance matching range is a subset of the impedance matching range required by the high-speed serial computer expansion bus standard and the impedance matching range required by the serial bus standard.

[0020] In an embodiment, the first switching terminal of the first single-pole double-throw switch is connected to a first wireless data transmission pin on the wireless communication chip through a first wireless differential line;

[0021] The first switching terminal of the second single-pole double-throw switch is connected to a second wireless data transmission pin on the wireless communication chip through a second wireless differential line;

[0022] The first switching terminal of the third single-pole double-throw switch is connected to a third wireless data transmission pin on the wireless communication chip through a third wireless differential line;

[0023] The first switching terminal of the fourth single-pole double-throw switch is connected to a fourth wireless data transmission pin on the wireless communication chip through a fourth wireless differential line;

[0024] The first switching end of the fifth single-pole double-throw switch is connected to the fifth wireless data transmission pin on the wireless communication chip through the fifth wireless differential line;

[0025] The first switching end of the sixth single-pole double-throw switch is connected to the sixth wireless data transmission pin on the wireless communication chip through the sixth wireless differential line;

[0026] The wireless differential lines include the first wireless differential line, the second wireless differential line, the third wireless differential line, the fourth wireless differential line, the fifth wireless differential line and the sixth wireless differential line.

[0027] In an embodiment, the second switching end of the first single-pole double-throw switch is connected to the first cellular data transmission pin on the cellular communication chip through the first cellular differential line;

[0028] The second switching end of the second single-pole double-throw switch is connected to the second cellular data transmission pin on the cellular communication chip through the second cellular differential line;

[0029] The second switching end of the third single-pole double-throw switch is connected to the third cellular data transmission pin on the cellular communication chip through the third cellular differential line;

[0030] The second switching end of the fourth single-pole double-throw switch is connected to the fourth cellular data transmission pin on the cellular communication chip through the fourth cellular differential line;

[0031] The second switching end of the fifth single-pole double-throw switch is connected to the fifth cellular data transmission pin on the cellular communication chip through the fifth cellular differential line;

[0032] The second switching end of the sixth single-pole double-throw switch is connected to the sixth cellular data transmission pin on the cellular communication chip through the sixth cellular differential line;

[0033] The cellular differential lines include the first cellular differential line, the second cellular differential line, the third cellular differential line, the fourth cellular differential line, the fifth cellular differential line and the sixth cellular differential line.

[0034] In an embodiment, the impedance matching of the wireless differential lines and the impedance matching of the cellular differential lines are within a preset impedance matching range;

[0035] The preset impedance matching range is a subset of the impedance matching range required by the high-speed serial computer expansion bus standard and the impedance matching range required by the serial bus standard.

[0036] In an embodiment, the communication interface module further includes a control unit;

[0037] The control unit is connected to the single-pole double-throw switches and is configured to control the switching of the single-pole double-throw switches.

[0038] In an embodiment, the communication interface module is provided with a first antenna, a second antenna, a third antenna and a fourth antenna connected with the cellular communication chip, and the communication interface module is further provided with a fifth antenna and a sixth antenna connected with the wireless communication chip.

[0039] In addition, to achieve the above object, the application further provides a terminal device, which comprises a power supply, a central processing unit and the communication interface module as described above.

[0040] The communication interface module is connected with the power supply and the central processing unit respectively.

[0041] The one or more technical solutions provided by the application have at least the following technical effects:

[0042] The application provides a communication interface module, which is integrated with a wireless communication chip and a cellular communication chip, and is provided with a plurality of switching devices; one end of each switching device is connected with a wireless data transmission pin of the wireless communication chip and a cellular data transmission pin of the cellular communication chip, and the other end of each switching device is connected with a gold finger of the communication interface module.

[0043] That is, the application integrates the wireless communication chip and the cellular communication chip on the communication interface module, and connects the wireless communication chip and the cellular communication chip with the same group of gold fingers through the switching devices, so that the communication interface module can dynamically switch wireless communication and cellular communication according to requirements, and close the signal path of one of the communication chips when it is not needed, so as to reduce signal interference, ensure signal stability and communication quality. The integrated design and the use of the switching devices not only reduce the number of required modules and the mainboard space, optimize the mainboard space, but also simplify the wiring design on the mainboard compared with the conventional two communication modules on the mainboard, which is conducive to reducing the development cost of the terminal device. BRIEF DESCRIPTION OF DRAWINGS

[0044] The accompanying drawings, which are incorporated into and form part of the specification, illustrate embodiments consistent with the application and, together with the specification, serve to explain the principles of the application.

[0045] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the accompanying drawings needed to be used in the embodiments or prior art description will be briefly introduced. Obviously, for those skilled in the art, other drawings can also be obtained without creative labor based on these drawings.

[0046] Figure 1 Fig. 1 is a structural schematic diagram of the communication interface module of the application;

[0047] Figure 2Layout diagram of the conventional wireless communication module and the cellular communication module on the mainboard of the terminal device;

[0048] Figure 3 Detailed structure diagram of the communication interface module of the present application;

[0049] Figure 4 Layout diagram of the communication receiving module of the present application on the mainboard of the terminal device.

[0050] Explanation of reference numerals:

[0051] 10, communication interface module; 101, golden finger;

[0052] k, switching device; k1, first single-pole double-throw switch; k2, second single-pole double-throw switch; k3, third single-pole double-throw switch; k4, fourth single-pole double-throw switch; k5, fifth single-pole double-throw switch; k6, sixth single-pole double-throw switch;

[0053] U1, control unit.

[0054] The object, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0055] The technical solutions in the embodiments of the present application will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0056] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement condition, etc. between the components in a certain posture, and if the certain posture changes, the directional indications also change accordingly.

[0057] In addition, if the description of "first", "second" and the like is involved in the embodiments of the present application, the description of "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can be explicitly or implicitly included at least one of the features. In addition, if "and / or" or "and / or" appears throughout the text, it means that the three parallel schemes are included, for example, "A and / or B" includes A scheme, or B scheme, or A and B scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of the ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope required by the present application.

[0058] Based on this, the embodiments of the present application provide a communication interface module 10, referring to Figure 1 , Figure 1 The structure diagram of the communication interface module 10 of the present application is shown.

[0059] In the present embodiment, the wireless communication chip and the cellular communication chip are integrated in the communication interface module 10, and a plurality of switching devices k are provided in the communication interface module 10.

[0060] One end of each switching device k is connected with the wireless data transmission pin of the wireless communication chip and the cellular data transmission pin of the cellular communication chip, respectively, and the other end of each switching device k is connected with the gold finger 101 of the communication interface module 10.

[0061] Firstly based on Figure 2 The module structure required for the terminal device to realize wireless communication and cellular communication is described. As shown in the figure, the conventional diversified communication module structure needs to configure a cellular communication module for realizing mobile network connection and a wireless communication module for realizing wireless local area network / Bluetooth connection on the mainboard of the terminal device, and needs to design wiring to connect the configured cellular communication module and wireless communication module with the power supply and central processing unit on the mainboard. As can be seen, the conventional diversified communication module structure requires sufficient space on the mainboard for placing two communication modules, and a certain distance between the two communication modules to avoid interference, and further needs to design more wiring to realize the connection between the two communication modules and the related devices on the mainboard, which has the problems of low space optimization degree of the mainboard and high complexity of the wiring, resulting in high development cost of the terminal device.

[0062] Therefore, based on the above situation, the embodiments of the present application provide a communication interface module 10, as shown in Figure 1The communication interface module 10 is shown, specifically: by integrating a cellular communication chip capable of realizing mobile network connection and a wireless communication chip realizing wireless local area network / Bluetooth connection, i.e. being arranged in the communication interface module 10, while a plurality of switching devices k are arranged in the communication interface module 10 and connected between the wireless communication chip and the cellular communication chip and the gold finger 101 of the communication interface module 10, because only one communication technology is called for connection in the use process of the terminal device in the same time period, the current gold finger 101 accesses the wireless communication chip or the cellular communication chip can be switched by the switching, i.e. by switching, one communication interface module 10 realizes the diversified communication demand of the terminal device while reducing the number of communication modules required to be installed on the terminal device, realizing the optimization of the mainboard space and the simplification of the space wiring, so as to achieve the effect of reducing the development cost of the terminal device.

[0063] In a feasible implementation manner, the switching device k is a single-pole double-throw switch; the first switching end of the single-pole double-throw switch is connected to the wireless data transmission pin of the wireless communication chip via a wireless differential line, the second switching end of the single-pole double-throw switch is connected to the cellular data transmission pin of the cellular communication chip via a cellular differential line, and the common end of the single-pole double-throw switch is connected to the gold finger 101 of the communication interface module 10 via a common differential line.

[0064] Because the effect to be realized is that according to the communication demand required by the terminal device, a single communication interface module 10 can dynamically switch to wireless communication or cellular communication to meet the diversified communication demand of the terminal device, it is proposed that the switching device k arranged in the communication interface module 10 is a single-pole double-throw switch, wherein the first switching end of the single-pole double-throw switch is connected to the wireless data transmission pin of the wireless communication chip, the second switching end of the single-pole double-throw switch is connected to the cellular data transmission pin of the cellular communication chip, and the common end of the single-pole double-throw switch is connected to the gold finger 101 of the communication interface module 10.

[0065] When the terminal device at this time needs to perform wireless communication, the common end is controlled to be connected to the first switching end, so that the gold finger 101 of the communication interface module 10 inserted into the terminal device accesses the wireless communication chip and performs wireless communication; when the terminal device at this time needs to perform cellular communication, the common end is controlled to be connected to the second switching end, so that the gold finger 101 of the communication interface module 10 inserted into the terminal device accesses the cellular communication chip and performs cellular communication.

[0066] And the reason for using the wireless differential line, the cellular differential line and the common differential line is to reduce the interference existing in the transmission process of the data signal, so as to improve the transmission stability of the data signal.

[0067] It should be noted that the communication interface module 10 in this embodiment adopts an M.2 module.

[0068] In a feasible implementation scenario, in the case where the communication interface module 10 supports the high-speed serial computer expansion bus standard and the serial bus standard, the switch device k includes a first single-pole double-throw switch k1, a second single-pole double-throw switch k2, a third single-pole double-throw switch k3, a fourth single-pole double-throw switch k4, a fifth single-pole double-throw switch k5, and a sixth single-pole double-throw switch k6.

[0069] The common terminal of the first single-pole double-throw switch k1 (i.e., the c1 terminal in Figure 3 ) is connected to the differential reference clock positive pin on the gold finger 101 through a first common differential line; the common terminal of the second single-pole double-throw switch k2 (i.e., the c2 terminal in Figure 3 ) is connected to the differential reference clock negative pin on the gold finger 101 through a second common differential line; the common terminal of the third single-pole double-throw switch k3 (i.e., the c3 terminal in Figure 3 ) is connected to the receiver positive pin on the gold finger 101 through a third common differential line; the common terminal of the fourth single-pole double-throw switch k4 (i.e., the c4 terminal in Figure 3 ) is connected to the receiver negative pin on the gold finger 101 through a fourth common differential line; the common terminal of the fifth single-pole double-throw switch k5 (i.e., the c5 terminal in Figure 3 ) is connected to the transmitter positive pin on the gold finger 101 through a fifth common differential line; and the common terminal of the sixth single-pole double-throw switch k6 (i.e., the c6 terminal in Figure 3 ) is connected to the transmitter negative pin on the gold finger 101 through a sixth common differential line; wherein the common differential lines include the first common differential line, the second common differential line, the third common differential line, the fourth common differential line, the fifth common differential line, and the sixth common differential line.

[0070] According to the PCI Express M.2 Specification, the M.2 module can support the single-channel mode and the dual-channel mode of the high-speed serial computer expansion bus standard, and can also support the 2.0 serial bus standard or the 3.0 serial bus standard. If the M.2 module supports the 3.0 serial bus standard, the M.2 module can only support the single-channel mode of the high-speed serial computer expansion bus standard, because the 3.0 serial bus standard needs to occupy the 4 pins required by the dual-channel mode of the high-speed serial computer expansion bus standard.

[0071] It should be noted that one independent high-speed serial computer expansion bus standard link requires 3 pairs of differential signal lines, a total of 6 pins, including positive reference clock differential lines, negative reference clock differential lines, positive transmission differential lines, negative transmission differential lines, positive reception differential lines and negative reception differential lines (corresponding to the first to sixth common differential lines in the above), which are connected to the pins corresponding to the gold finger 101 for the cellular communication chip to realize the transmission of corresponding data signals.

[0072] According to the PCI Express M.2 Specification, a certain specific M.2 module needs to have a 3.0 serial bus and a 2.0 serial bus, wherein the 3.0 serial bus requires 2 pairs of differential signal lines, and the 2.0 serial bus requires 1 pair of differential signal lines, i.e. the same 3 pairs of differential signal lines are also required for data signal transmission, so the corresponding single-pole double-throw switch can be used to connect the 3 pairs of differential signal lines to the pins corresponding to the gold finger 101 for the wireless communication chip, i.e. as shown in Figure 3 .

[0073] Because there are 6 pins, six single-pole double-throw switches are provided, and the common ends of the six single-pole double-throw switches are connected to the pins corresponding to the gold finger 101 through the corresponding common differential lines to realize the transmission of corresponding data signals. The reason for using differential line pairs (i.e. positive reference clock differential lines-negative reference clock differential lines, positive transmission differential lines-negative transmission differential lines, positive reception differential lines-negative reception differential lines) is that two data signals of opposite polarity are transmitted through the differential lines, and the two data signals will experience similar noise or interference during transmission. After receiving the two data signals, the receiving section can effectively cancel the common mode interference by comparing the difference between the two data signals, thereby improving the accuracy of data signal transmission.

[0074] It should be noted that the impedance matching of the common differential line is within a preset impedance matching range; the preset impedance matching range is a subset of the impedance matching range required by the high-speed serial computer expansion bus standard and the impedance matching range required by the serial bus standard.

[0075] In order to improve the transmission quality of data signals and ensure that the data signals transmitted through the common differential line can be effectively transmitted without data signal reflection, the embodiment needs to set the impedance matching of the common differential line within the preset impedance matching range.

[0076] The preset impedance matching range is a subset of the impedance matching range required by the high-speed serial computer expansion bus standard and the impedance matching range required by the serial bus standard, specifically: in the PCI Express M.2 Specification, the impedance matching range of the common differential line is 50-70 ohms, and in the USB Type-C Specification, the impedance matching range of the common differential line is 90-100 ohms. The Base Specification stipulates that the impedance matching of the differential line pair involved in the high-speed serial computer expansion bus standard shall be 100Ω, and the allowable error range is ±10%, which means that the impedance matching of the differential line pair involved in the high-speed serial computer expansion bus standard shall be between 90Ω and 110Ω; the Universal Serial Bus Specification Revision 2.0 stipulates that the impedance matching of the differential line pair involved in the 2.0 serial bus standard shall be 90Ω, and the allowable error range is ±10%, which means that the impedance matching of the differential line pair involved in the 2.0 serial bus standard shall be between 81Ω and 99Ω; the Universal Serial Bus 3.0 Specification stipulates that the impedance matching of the differential line pair involved in the 3.0 serial bus standard shall be 90Ω, but the error range is more stringent, which is ±7Ω, which means that the impedance matching of the differential line pair involved in the 3.0 serial bus standard shall be between 83Ω and 97Ω.

[0077] Because the specifications of the high-speed serial computer expansion bus standard and the serial bus standard need to be considered at the same time, an impedance matching range that can meet all the specifications, i.e. a subset of the above-mentioned impedance matching range, needs to be selected, and the resulting preset impedance range is 90Ω-97Ω.

[0078] In addition, the first switching end (i.e. the a1 end in Figure 3 ) of the first single-pole double-throw switch k1 is connected to the first wireless data transmission pin on the wireless communication chip through the first wireless differential line; the first switching end (i.e. the a2 end in Figure 3 ) of the second single-pole double-throw switch k2 is connected to the second wireless data transmission pin on the wireless communication chip through the second wireless differential line; the first switching end (i.e. the a3 end in Figure 3 ) of the third single-pole double-throw switch k3 is connected to the third wireless data transmission pin on the wireless communication chip through the third wireless differential line; the first switching end (i.e. the a4 end in Figure 3 ) of the fourth single-pole double-throw switch k4 is connected to the fourth wireless data transmission pin on the wireless communication chip through the fourth wireless differential line; the first switching end (i.e. the a5 end in Figure 3 ) of the fifth single-pole double-throw switch k5 is connected to the fifth wireless data transmission pin on the wireless communication chip through the fifth wireless differential line; the first switching end (i.e. the a6 end in Figure 3 ) of the sixth single-pole double-throw switch k6 is connected to the sixth wireless data transmission pin on the wireless communication chip through the sixth wireless differential line; wherein the wireless differential line includes the first wireless differential line, the second wireless differential line, the third wireless differential line, the fourth wireless differential line, the fifth wireless differential line and the sixth wireless differential line.

[0079] Because one independent serial bus standard link needs 3 pairs of differential signal lines, a total of 6 pins, therefore, the corresponding cellular communication chip also needs to lead out the corresponding six differential lines via the corresponding single-pole double-throw switch to access the corresponding pins of the gold finger 101, that is, the corresponding positive reference clock differential line, negative reference clock differential line, positive sending differential line, negative sending differential line, positive receiving differential line and negative receiving differential line (corresponding to the first to sixth wireless differential lines in the above) are needed to access the corresponding pins of the gold finger 101, so as to realize wireless communication.

[0080] And the second switching end (i.e. b1 end in Figure 3 ) of the first single-pole double-throw switch k1 is connected to the first cellular data transmission pin on the cellular communication chip through the first cellular differential line; the second switching end (i.e. b2 end in Figure 3 ) of the second single-pole double-throw switch k2 is connected to the second cellular data transmission pin on the cellular communication chip through the second cellular differential line; the second switching end (i.e. b3 end in Figure 3 ) of the third single-pole double-throw switch k3 is connected to the third cellular data transmission pin on the cellular communication chip through the third cellular differential line; the second switching end (i.e. b4 end in Figure 3 ) of the fourth single-pole double-throw switch k4 is connected to the fourth cellular data transmission pin on the cellular communication chip through the fourth cellular differential line; the second switching end (i.e. b5 end in Figure 3 ) of the fifth single-pole double-throw switch k5 is connected to the fifth cellular data transmission pin on the cellular communication chip through the fifth cellular differential line; the second switching end (i.e. b6 end in Figure 3 ) of the sixth single-pole double-throw switch k6 is connected to the sixth cellular data transmission pin on the cellular communication chip through the sixth cellular differential line; wherein the cellular differential line includes the first, second, third, fourth, fifth and sixth cellular differential lines.

[0081] Because one independent high-speed serial computer expansion bus standard link needs 3 pairs of differential signal lines, a total of 6 pins, therefore, the corresponding cellular communication chip also needs to lead out the corresponding six differential lines via the corresponding single-pole double-throw switch to access the corresponding pins of the gold finger 101, that is, the corresponding positive reference clock differential line, negative reference clock differential line, positive sending differential line, negative sending differential line, positive receiving differential line and negative receiving differential line (corresponding to the first to sixth wireless differential lines in the above) are needed to access the corresponding pins of the gold finger 101, so as to realize wireless communication.

[0082] It should be noted that the impedance matching of the wireless differential line and the impedance matching of the cellular differential line are in a preset impedance matching range; the preset impedance matching range is a subset of the impedance matching range required by the high-speed serial computer expansion bus standard and the impedance matching range required by the serial bus standard. In the present embodiment, the preset impedance matching range in which the impedance matching of the wireless differential line and the impedance matching of the cellular differential line are located is the same as the preset impedance matching range in which the impedance matching of the common differential line is located, and thus is not repeated here.

[0083] Further, the communication interface module 10 further comprises a control unit U1;

[0084] The control unit U1 is connected with the single-pole double-throw switch and used for controlling the switching of the single-pole double-throw switch.

[0085] According to Figure 3 It can be known that each single-pole double-throw switch arranged in the communication interface module 10 in the present embodiment is switched by the control unit U1. For example, when the terminal device needs to perform wireless communication at this time, the control unit U1 controls the first switching end of each single-pole double-throw switch to be connected with the common end, so that the gold finger 101 of the communication interface module 10 is switched to be connected with the wireless communication chip; when the terminal device needs to perform cellular communication at this time, the control unit U1 controls the second switching end of each single-pole double-throw switch to be connected with the common end, so that the gold finger 101 of the communication interface module 10 is switched to be connected with the cellular communication chip.

[0086] In a feasible implementation manner, the communication interface module 10 is provided with a first antenna, a second antenna, a third antenna and a fourth antenna connected with the cellular communication chip, when the terminal device is connected to the Internet through the cellular network, the communication interface module 10 can realize the sending and receiving of data signals by calling the four antennas; the communication interface module 10 is further provided with a fifth antenna and a sixth antenna connected with the wireless communication chip, when the terminal device is connected to the Internet through the wireless network, the communication interface module 10 can realize the sending and receiving of data signals by calling the two antennas.

[0087] Referring to Figure 4 , the present application further provides a terminal device, which comprises a power supply, a central processing unit, and a communication interface module as described above;

[0088] The communication interface module is connected with the power supply and the central processing unit respectively. By comparing Figure 2 and Figure 4 , it can be known that, compared with the arrangement of the conventional communication module, the communication interface module proposed in the present embodiment can not only reduce the area of the mainboard of the terminal device occupied, but also reduce the wiring of the communication interface module with the power supply and the central processing unit respectively, so as to simplify the wiring and reduce the development cost of the terminal device to a certain extent.

[0089] The above merely provides part of embodiments of the present application, and does not limit the patent scope of the present application. Any equivalent structure transformation, direct / indirect application in other related technical fields based on the technical concept of the present application, and contents of the present application specification and drawings are included in the patent protection scope of the present application.

Claims

1. A communications interface module, characterized by The communication interface module is integrated with a wireless communication chip and a cellular communication chip, and is provided with a plurality of switching devices; One end of each of the switching devices is connected with a wireless data transmission pin of the wireless communication chip and a cellular data transmission pin of the cellular communication chip, respectively, and the other end of each of the switching devices is connected with a gold finger of the communication interface module.

2. The communication interface module of claim 1, wherein, The switching device is a single-pole double-throw switch; The first switching end of the single-pole double-throw switch is connected with the wireless data transmission pin of the wireless communication chip via a wireless differential line, the second switching end of the single-pole double-throw switch is connected with the cellular data transmission pin of the cellular communication chip via a cellular differential line, and the common end of the single-pole double-throw switch is connected with the gold finger of the communication interface module through a common differential line.

3. The communication interface module of claim 2, wherein, In the case that the communication interface module supports a high-speed serial computer expansion bus standard and a serial bus standard, the switching device includes a first single-pole double-throw switch, a second single-pole double-throw switch, a third single-pole double-throw switch, a fourth single-pole double-throw switch, a fifth single-pole double-throw switch and a sixth single-pole double-throw switch; The common end of the first single-pole double-throw switch is connected with a differential reference clock positive pin on the gold finger through a first common differential line; The common end of the second single-pole double-throw switch is connected with a differential reference clock negative pin on the gold finger through a second common differential line; The common end of the third single-pole double-throw switch is connected with a receiver positive pin on the gold finger through a third common differential line; The common end of the fourth single-pole double-throw switch is connected with a receiver negative pin on the gold finger through a fourth common differential line; The common end of the fifth single-pole double-throw switch is connected with a transmitter positive pin on the gold finger through a fifth common differential line; The common end of the sixth single-pole double-throw switch is connected with a transmitter negative pin on the gold finger through a sixth common differential line; The common differential line includes the first common differential line, the second common differential line, the third common differential line, the fourth common differential line, the fifth common differential line and the sixth common differential line.

4. The communication interface module of claim 3, wherein, Impedance matching of the common differential line is on a preset impedance matching range; The preset impedance matching range is a subset of an impedance matching range required by the high-speed serial computer expansion bus standard and an impedance matching range required by the serial bus standard.

5. The communication interface module of claim 3, wherein, The first switching end of the first single-pole double-throw switch is connected with a first wireless data transmission pin on the wireless communication chip through a first wireless differential line; The first switching end of the second single-pole double-throw switch is connected with a second wireless data transmission pin on the wireless communication chip through a second wireless differential line; The first switching end of the third single-pole double-throw switch is connected with a third wireless data transmission pin on the wireless communication chip through a third wireless differential line; The first switching end of the fourth single-pole double-throw switch is connected with a fourth wireless data transmission pin on the wireless communication chip through a fourth wireless differential line; The first switching end of the fifth single-pole double-throw switch is connected with a fifth wireless data transmission pin on the wireless communication chip through a fifth wireless differential line; The first switching end of the sixth single-pole double-throw switch is connected with a sixth wireless data transmission pin on the wireless communication chip through a sixth wireless differential line; The wireless differential lines include the first wireless differential line, the second wireless differential line, the third wireless differential line, the fourth wireless differential line, the fifth wireless differential line and the sixth wireless differential line.

6. The communication interface module of claim 5, wherein, The second switching end of the first single-pole double-throw switch is connected with a first cellular data transmission pin on the cellular communication chip through a first cellular differential line; The second switching end of the second single-pole double-throw switch is connected with a second cellular data transmission pin on the cellular communication chip through a second cellular differential line; The second switching end of the third single-pole double-throw switch is connected with a third cellular data transmission pin on the cellular communication chip through a third cellular differential line; The second switching end of the fourth single-pole double-throw switch is connected with a fourth cellular data transmission pin on the cellular communication chip through a fourth cellular differential line; The second switching end of the fifth single-pole double-throw switch is connected with a fifth cellular data transmission pin on the cellular communication chip through a fifth cellular differential line; The second switching end of the sixth single-pole double-throw switch is connected with a sixth cellular data transmission pin on the cellular communication chip through a sixth cellular differential line; The cellular differential lines include the first cellular differential line, the second cellular differential line, the third cellular differential line, the fourth cellular differential line, the fifth cellular differential line and the sixth cellular differential line.

7. The communication interface module of claim 6, wherein, Impedance matching of the wireless differential lines and impedance matching of the cellular differential lines are within a preset impedance matching range; The preset impedance matching range is a subset of an impedance matching range required by a high-speed serial computer expansion bus standard and an impedance matching range required by a serial bus standard.

8. The communication interface module of claim 2, wherein, The communication interface module further includes a control unit; The control unit is connected with the single-pole double-throw switches and is configured to control switching of the single-pole double-throw switches.

9. The communication interface module of claim 1, wherein, The communication interface module is provided with a first antenna, a second antenna, a third antenna and a fourth antenna connected with the cellular communication chip, and is further provided with a fifth antenna and a sixth antenna connected with the wireless communication chip.

10. A terminal device, comprising: The terminal device includes a power supply, a central processing unit, and a communication interface module as claimed in any one of claims 1 to 9. The communication interface module is connected with the power supply and the central processing unit respectively.

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