Read-write control circuit for multiple memory cards and electronic equipment
By designing a read/write control circuit for multiple memory cards, the problem of existing devices being unable to efficiently read and write multiple memory cards was solved, achieving efficient read/write and flexible control of multiple memory cards, thus improving data management efficiency and user experience.
Patent Information
- Application Number
- CN202422980476.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-02
- Publication Date
- 2025-11-21
- Estimated Expiration
- 2034-12-02
AI Technical Summary
Existing data read/write devices cannot efficiently read and write multiple memory cards of the same or different types, and lack read/write control efficiency and flexibility.
A multi-memory card read/write control circuit is designed, including a control circuit, a memory card circuit, and a power supply and communication circuit. The circuit detects the memory cards through the target access terminal and connects them to the main control device, enabling simultaneous or individual read/write of multiple memory cards. The read/write control chip and clock module are used to improve data transmission efficiency, and the memory card access status is displayed through a display module.
It enables efficient reading and writing of multiple memory cards, improves read and write control efficiency and flexibility, facilitates user management of data from multiple memory cards, and enhances the power supply stability and communication reliability of the circuit.
Smart Images
Figure CN223582486U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to card reader technical field especially relates to a read and write control circuit and electronic equipment of many storage cards. BACKGROUND
[0002] In real life, user can read and write the data in the storage card conveniently and efficiently by using the data read and write equipment (such as: card reader). However, the existing data read and write equipment can only read and write a single storage card at the same time, so the existing technology has the defect of being unable to efficiently read and write multiple storage cards of the same type or multiple types.
[0003] Therefore, it is particularly important to provide a technical scheme capable of improving the read and write control efficiency and flexibility of the storage card, thereby realizing efficient read and write of multiple storage cards. UTILITY MODEL CONTENT
[0004] The utility model provides a read and write control circuit and electronic equipment of many storage cards can improve the read and write control efficiency and flexibility of the storage card, thereby realizing efficient read and write of multiple storage cards.
[0005] In order to solve the above technical problem, the utility model discloses a read and write control circuit of many storage cards in the first aspect, the read and write control circuit of many storage cards includes control circuit, first storage card circuit, second storage card circuit and third storage card circuit, wherein:
[0006] The power supply communication end of the control circuit is used for electric connection master control equipment, the first storage card access end of the control circuit is electrically connected with the first end of the first storage card circuit, the first end of the third storage card circuit respectively, the second storage card access end of the control circuit is electrically connected with the first end of the second storage card circuit;
[0007] The control circuit is used for when detecting the storage card through the target access end, access one target storage card corresponding to the target access end to the master control equipment, to execute read and write operation to each target storage card;
[0008] Wherein, the target access end includes the first storage card access end and / or the second storage card access end;When the target access end includes the first storage card access end, the target storage card includes the first storage card connected by the first storage card circuit or the third storage card connected by the third storage card circuit;When the target access end includes the second storage card access end, the target storage card includes the second storage card connected by the second storage card circuit.
[0009] As an optional implementation, in the first aspect of the utility model, the multi-storage card read-write control circuit further includes a power supply communication circuit, wherein:
[0010] The first end of the power supply communication circuit is electrically connected with the power supply communication end of the control circuit, and the second end of the power supply communication circuit is used for electrically connecting the host device;
[0011] The power supply communication circuit is used for supplying power to the control circuit after accessing the host device, and controlling the transmission of host signals and data transmission between the host device and the control circuit.
[0012] As an optional implementation, in the first aspect of the utility model, the storage card type that the first storage card circuit can access and the storage card type that the second storage card circuit can access are both first storage card types, and the storage card type that the third storage card circuit can access is a second storage card type.
[0013] As an optional implementation, in the first aspect of the utility model, the control circuit includes a read-write control chip, wherein:
[0014] The power supply communication end of the read-write control chip is electrically connected with the first end of the power supply communication circuit, the first storage card access end of the read-write control chip is electrically connected with the first end of the first storage card circuit and the first end of the third storage card circuit respectively, the second storage card access end of the read-write control chip is electrically connected with the first end of the second storage card circuit, and the grounding end of the read-write control chip is used for grounding.
[0015] As an optional implementation, in the first aspect of the utility model, the control circuit further includes a clock module, wherein:
[0016] The input end of the clock module is electrically connected with the first crystal oscillator end of the read-write control chip, the output end of the clock module is electrically connected with the second crystal oscillator end of the read-write control chip, and the grounding end of the clock module is used for grounding;
[0017] The clock module is used for providing a clock signal to the read-write control chip.
[0018] As an optional implementation, in the first aspect of the utility model, the first storage card type is an SD card type, and the second storage card type is a TF card type.
[0019] The first storage card circuit includes a first SD card seat, and the third storage card circuit includes a TF card seat, wherein:
[0020] The data end of the first SD card seat, the data end of the TF card seat are electrically connected with the first memory card data end of the read-write control chip respectively, the clock signal end of the first SD card seat, the clock signal end of the TF card seat are electrically connected with the first clock signal end of the read-write control chip respectively, the command end of the first SD card seat, the command end of the TF card seat are electrically connected with the first command end of the read-write control chip respectively, the insertion detection end of the first SD card seat, the insertion detection end of the TF card seat are electrically connected with the first insertion detection end of the read-write control chip respectively, the write protection end of the first SD card seat, the write protection end of the TF card seat are electrically connected with the first write protection end of the read-write control chip respectively, the power supply end of the first SD card seat, the power supply end of the TF card seat are electrically connected with the first power supply end of the read-write control chip respectively, and the ground end of the first SD card seat and the ground end of the TF card seat are used for grounding.
[0021] As an optional implementation, in the first aspect of the utility model, the second memory card circuit includes second SD card seat, wherein:
[0022] The data end of the second SD card seat is electrically connected with the second memory card data end of the read-write control chip, the clock signal end of the second SD card seat is electrically connected with the second clock signal end of the read-write control chip, the command end of the second SD card seat is electrically connected with the second command end of the read-write control chip, the insertion detection end of the second SD card seat is electrically connected with the insertion detection end of the read-write control chip, the write protection end of the second SD card seat is electrically connected with the second write protection end of the read-write control chip, the power supply end of the second SD card seat is electrically connected with the second power supply end of the read-write control chip, and the ground end of the second SD card seat is used for grounding.
[0023] As an optional implementation, in the first aspect of the utility model, the read-write control circuit of the multiple memory cards further includes data storage circuit, wherein:
[0024] The first end of the data storage circuit is electrically connected with the data storage end of the control circuit, the second end of the data storage circuit is used for electrically connecting system power supply, and the third end of the data storage circuit is used for grounding;
[0025] The data storage circuit is used for storing the configuration information corresponding to the control circuit and the data transmission record between the control circuit and each memory card circuit; Wherein, each memory card circuit is one of the first memory card circuit, the second memory card circuit and the third memory card circuit.
[0026] As an optional implementation, in the first aspect of the utility model, the control circuit further includes display module, wherein:
[0027] The first end of the display module is electrically connected with the first display end of the read-write control chip, the second end of the display module is electrically connected with the second display end of the read-write control chip, and the third end of the display module is used for grounding.
[0028] The display module is used for displaying the access state of the memory card corresponding to the read-write control chip.
[0029] The utility model discloses a second aspect of an electronic equipment, the electronic equipment includes equipment body and the read-write control circuit of the multiple memory card of any one disclosed in the first aspect.
[0030] Compared with the prior art, the utility model has the following beneficial effects:
[0031] The utility model discloses a kind of read-write control circuit of multiple memory card, including the first storage card circuit, the second storage card circuit, the third storage card circuit, the control circuit, the target access end, the first storage card access end and the second storage card access end, the first storage card circuit is connected with the first storage card access end, the second storage card circuit is connected with the second storage card access end, the third storage card circuit is connected with the target access end, the control circuit is connected with the first storage card circuit, the second storage card circuit and the third storage card circuit, and the control circuit is connected with the target access end, the first storage card access end and the second storage card access end. BRIEF DESCRIPTION OF DRAWINGS
[0032] In order to more clearly illustrate the technical scheme in the utility model embodiment, the following will briefly introduce the drawing needed to be used in embodiment description, obviously, the drawing in the following description is only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creating labor.
[0033] Figure 1 It is the structure schematic view of the read-write control circuit of multiple memory card disclosed in the utility model embodiment;
[0034] Figure 2 It is the structure schematic view of another read-write control circuit of multiple memory card disclosed in the utility model embodiment;
[0035] Figure 3 It is the structure schematic view of the power supply communication circuit disclosed in the utility model embodiment;
[0036] Figure 4is a structure schematic view of a power supply selection circuit according to an embodiment of the present application;
[0037] Figure 5 is a structure schematic view of a control circuit according to an embodiment of the present application;
[0038] Figure 6 is a structure schematic view of a clock module according to an embodiment of the present application;
[0039] Figure 7 is a structure schematic view of a display module according to an embodiment of the present application;
[0040] Figure 8 is a structure schematic view of a first storage card circuit according to an embodiment of the present application;
[0041] Figure 9 is a structure schematic view of a second storage card circuit according to an embodiment of the present application;
[0042] Figure 10 is a structure schematic view of a third storage card circuit according to an embodiment of the present application;
[0043] Figure 11 is a structure schematic view of a data storage circuit according to an embodiment of the present application;
[0044] Figure 12 is a structure schematic view of another read-write control circuit of a multi-storage card according to an embodiment of the present application;
[0045] Figure 13 is a structure schematic view of an electronic device according to an embodiment of the present application. DETAILED DESCRIPTION
[0046] In order to make the personnel in the art better understand the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by the person of ordinary skill in the art without creative labor fall within the scope of the present application.
[0047] It should be noted that, unless otherwise explicitly specified and limited, the term "electrically connected" in the description and claims of the present application and the above-mentioned drawings should be understood broadly, for example, it can be fixed electrically connected, or it can be detachable electrically connected, or integrally electrically connected; it can be mechanically electrically connected, or it can be electrically connected or can communicate with each other; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements or the interaction relationship between two elements. In addition, the terms "first", "second" and the like in the description and claims of the present application and the above-mentioned drawings are used to distinguish different objects, and are not used to describe a specific order, and the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion. For those skilled in the art, the specific meaning of the above-mentioned terms in the present application can be understood according to the specific circumstances.
[0048] Embodiment one
[0049] Please refer to Figure 1 , Figure 1 is a structural diagram of a multi-storage card read-write control circuit disclosed by the embodiment of the present application. The circuit can be applied to an electronic device which needs to read and write multiple storage cards respectively or simultaneously. For example, the electronic device can be a card reader, and the embodiment of the present application is not limited. As shown in Figure 1 , the multi-storage card read-write control circuit 10 can include a control circuit 101, a first storage card circuit 102, a second storage card circuit 103 and a third storage card circuit 104, wherein:
[0050] The power supply communication end of the control circuit 101 is used for electrically connecting a host device, the first storage card access end of the control circuit 101 is electrically connected with the first end of the first storage card circuit 102 and the first end of the third storage card circuit 104 respectively, and the second storage card access end of the control circuit 101 is electrically connected with the first end of the second storage card circuit 103;
[0051] The control circuit 101 is used for, when detecting a storage card through a target access end, accessing a target storage card corresponding to the target access end to the host device, so as to perform read-write operation on each target storage card;
[0052] Wherein, the target access end includes the first storage card access end and / or the second storage card access end; when the target access end includes the first storage card access end, the target storage card includes the first storage card connected with the first storage card circuit 102 or the third storage card connected with the third storage card circuit 104; when the target access end includes the second storage card access end, the target storage card includes the second storage card connected with the second storage card circuit 103.
[0053] The host device can be a host, a mobile terminal, or another device capable of controlling reading and writing of the memory card, and the embodiments of the present application are not limited in this regard.
[0054] The read / write operation can include a data reading operation and / or a data writing operation, and the embodiments of the present application are not limited in this regard.
[0055] When the first memory card access end detects that the first memory card circuit 102 is connected with the first memory card or the third memory card circuit 104 is connected with the third memory card, the connected memory card can be directly accessed to the host device.When the first memory card access end and the second memory card access end both detect the memory card, for example, the first memory card and the second memory card, the first memory card and the second memory card can be simultaneously accessed to the host device, and the first memory card and the second memory card can be simultaneously read / written, and the embodiments of the present application are not limited in this regard.
[0056] It can be seen that the circuit provided by the embodiments of the present application has a simple structure and is easy to implement.
[0057] In an optional embodiment, as shown in FIG. 10, Figure 2 Figure 2 FIG. 10 is a structural schematic diagram of another read / write control circuit for multiple memory cards according to an embodiment of the present application, wherein the read / write control circuit 10 for multiple memory cards can further include a power supply communication circuit 105, and wherein:
[0058] The first end of the power supply communication circuit 105 is electrically connected with the power supply communication end of the control circuit 101, and the second end of the power supply communication circuit 105 is used for electrically connecting the host device.
[0059] The power supply communication circuit 105 is used for supplying power to the control circuit 101 after accessing the host device, and controlling the transmission of the host signal and the transmission of the data between the host device and the control circuit 101.
[0060] Optionally, the voltage supplied by the power supply communication circuit 105 to the control circuit 101 can be 5V, or can be other voltage values, and the embodiments of the present application are not limited.
[0061] It can be seen that, by arranging the power supply communication circuit, the power supply communication circuit can supply power to the control circuit, so that the control circuit and the read-write control circuit as a whole can normally and stably operate, the power supply convenience and stability of the circuit are improved, and the operation stability of the read-write control circuit is improved; and by controlling the transmission of the signal and the data between the host device and the control circuit through the power supply communication circuit, the communication efficiency and the communication reliability between the read-write control circuit and the host device are improved, and the read-write control accuracy and the read-write control reliability of the multi-storage card are improved.
[0062] In the optional embodiment, as shown in Figure 3 , Figure 3 is a structural schematic diagram of a power supply communication circuit according to an embodiment of the present application. The power supply communication circuit 105 can include a USB interface USB1. The first end of the power supply communication circuit 105 is electrically connected with the power supply communication end of the control circuit 101, and can be specifically as follows:
[0063] The transmission end of the USB interface USB1 is electrically connected with the transmission end of the control circuit 101, the data end of the USB interface USB1 is electrically connected with the data end of the control circuit 101, and the power supply end of the USB interface USB1 is electrically connected with the power supply end of the control circuit 101.
[0064] In addition, the grounding end of the USB interface USB1 is used for grounding.
[0065] Optionally, the USB interface USB1 can be a USB3.0 Type-A male seat interface, and the embodiments of the present application are not limited. As shown in Figure 3 , the transmission end of the USB interface USB1 can include TXN, TXP, RXN and RXP, the data end of the USB interface USB1 can include DP and DM, and the power supply end of the USB interface USB1 can be VBUS. The power supply end VBUS can be used for supplying power to the control circuit 101, and the embodiments of the present application are not limited.
[0066] Optionally, for the multi-memory card read-write control circuit 10, other electronic components contained by the power supply communication circuit 105, the connection relationship between the electronic components contained by the power supply communication circuit 105, and the connection relationship between the electronic components contained by the power supply communication circuit 105 and other circuit structures are specifically refer to Figure 3 .
[0067] It can be seen that by using the USB interface to realize the power supply communication circuit, the development cost of the power supply communication circuit can be reduced, and the stability of the power supply to the control circuit and the communication stability between the control circuit and the host device can be improved while improving the efficiency and stability of the read-write control circuit electrically connected to the host device.
[0068] In this optional embodiment, as shown in Figure 2 , the multi-memory card read-write control circuit 10 can further include a power supply selection circuit 106, wherein:
[0069] As shown in Figure 4 , Figure 4 is a structural schematic diagram of a power supply selection circuit disclosed in an embodiment of the utility model, wherein the first end of the power supply selection circuit 106 is electrically connected with the power supply end of the USB interface USB1, the second end of the power supply selection circuit 106 is used for electrically connecting the system power supply (such as System_V33 shown in Figure 4 ), and the third end of the power supply selection circuit 106 is electrically connected with the power supply end (such as VBUS_IC shown in Figure 4 ) in the power supply communication end of the control circuit 101; wherein the first power supply voltage provided by the power supply end of the USB interface USB1 is not equal to the second power supply voltage provided by the system power supply;
[0070] The power supply selection circuit 106 is used for providing different power supply voltages to the control circuit 101 based on the determined power supply voltage mode.
[0071] For example, the first power supply voltage provided by the power supply end of the USB interface USB1 can be 5V, and the second power supply voltage provided by the system power supply can be 3.3V, which is not limited in the embodiment of the utility model.
[0072] Optionally, as shown in Figure 4 , when the power supply voltage mode is the 5V mode, the power supply selection circuit 106 can include the first resistor R34 as shown in Figure 4 ; when the power supply voltage mode is the 3.3V mode, the power supply selection circuit 106 can include the second resistor R35 and the third resistor R36 as shown in Figure 4 , which is not limited in the embodiment of the utility model.
[0073] Specifically, the first end of the first resistor R34 is electrically connected to the power supply terminal of the USB interface USB1, the first end of the second resistor R35 is electrically connected to the system power supply, and the second ends of the first resistor R34 and the second resistor R35 are respectively connected to the power supply and communication terminals of the control circuit 101 (e.g., ...). Figure 4 The VBUS_IC electrical connection is shown.
[0074] Optionally, for the multi-memory card read / write control circuit 10, the other electronic components included in the power selection circuit 106, the connection relationships between the included electronic components, and the connection relationships between the included electronic components and other circuit structures are specifically referred to Figure 4 .
[0075] It is evident that by setting a power selection circuit in the read / write control circuit of multiple memory cards, the power supply voltage connected to the circuit can be flexibly selected based on different power supply voltage modes, which can improve the power supply access flexibility of the circuit and help improve the reliability of circuit operation.
[0076] In yet another alternative embodiment, such as Figure 5 As shown, Figure 5 This is a schematic diagram of a control circuit disclosed in an embodiment of the present utility model. The control circuit 101 may include a read / write control chip 1011, wherein:
[0077] The power supply and communication terminal of the read / write control chip 1011 is electrically connected to the first terminal of the power supply and communication circuit 105; the first memory card access terminal of the read / write control chip 1011 is electrically connected to the first terminal of the first memory card circuit 102 and the first terminal of the third memory card circuit 104, respectively; the second memory card access terminal of the read / write control chip 1011 is electrically connected to the first terminal of the second memory card circuit 103; the ground terminal of the read / write control chip 1011 is used for grounding.
[0078] For example, such as Figure 5 As shown, the power supply and communication terminals of the read / write control chip 1011 may include a transmission terminal (such as...). Figure 5 The TXN, TXP, RXN, and RXP shown), and the data terminals (such as...) Figure 5 The DP and DM shown) and power supply terminals (such as Figure 5 (as shown in VBUS_IC).
[0079] For example, the read / write control chip 1011 can be as follows: Figure 5 The card reader control chip U1 shown is not limited in this embodiment.
[0080] It can be seen that by setting the read-write control chip in the control circuit, the power supply efficiency, communication efficiency and data transmission efficiency between the read-write control circuit of the multiple memory cards, the host control device and the multiple memory cards can be improved, thereby facilitating to improve the accuracy and efficiency of simultaneously or respectively performing read-write control on the multiple memory cards, and facilitating to improve the read-write control efficiency and flexibility of the memory cards.
[0081] In the optional embodiment, the control circuit 101 can further include a clock module 1012, as shown in Figure 6 Figure 6 is a structural schematic diagram of a clock module disclosed by the embodiment of the utility model, wherein
[0082] The input end of the clock module 1012 is electrically connected with the first crystal oscillator end of the read-write control chip 1011, the output end of the clock module 1012 is electrically connected with the second crystal oscillator end of the read-write control chip 1011, and the grounding end of the clock module 1012 is used for grounding.
[0083] The clock module 1012 is used for providing a clock signal to the read-write control chip 1011.
[0084] Optionally, for the control circuit 101, the electronic components included in the clock module 1012, the connection relationship between the electronic components included in the clock module 1012 and the connection relationship between the electronic components included in the clock module 1012 and other circuit structures refer to Figure 6 .
[0085] It can be seen that by setting the clock module in the control circuit, the clock signal can be stably provided to the control circuit, thereby facilitating to improve the accuracy of data transmission and signal transmission of the control circuit, and further facilitating to improve the read-write control accuracy of the memory card.
[0086] In the optional embodiment, the control circuit 101 can further include a display module 1013, as shown in Figure 7 Figure 7 is a structural schematic diagram of a display module disclosed by the embodiment of the utility model, wherein
[0087] The first end of the display module 1013 is electrically connected with the first display end of the read-write control chip 1011, the second end of the display module 1013 is electrically connected with the second display end of the read-write control chip 1011, and the third end of the display module 1013 is used for grounding.
[0088] The display module 1013 is used for displaying the access state of the memory card corresponding to the read-write control chip 1011.
[0089] Optionally, the storage card access state can include a first state corresponding to the first storage card access end and / or a second state corresponding to the second storage card access end, and the embodiments are not limited in this regard. Further optionally, the first state and the second state can each include one of an access state, a non-access state, a data transmission state, and a fault state, and the embodiments are not limited in this regard.
[0090] Optionally, as shown in FIG. 10A, the display module 1013 can include a first display unit 10131 and a second display unit 10132, and the first display unit 10131 can include a first diode LED1 and the second display unit 10132 can include a second diode LED2. Figure 7
[0091] The anode of the first diode LED1 is electrically connected to the first display end of the read-write control chip 1011, the anode of the second diode LED2 is electrically connected to the second display end of the read-write control chip 1011, and the cathode of the first diode LED1 and the cathode of the second diode LED2 are respectively connected to ground.
[0092] The first display unit 10131 is configured to display a first state corresponding to the first storage card access end, and the second display unit 10132 is configured to display a second state corresponding to the second storage card access end.
[0093] Optionally, different states can be represented by different light-emitting states and flashing frequencies of the LED, and the embodiments are not limited in this regard.
[0094] As can be seen, by providing the display module in the control circuit, the storage card access state corresponding to the read-write control chip can be flexibly and efficiently displayed, the display flexibility of the storage card access state is improved, and thus the user can intuitively know the access or data transmission of the storage card, and the use experience of the user is improved.
[0095] In this optional embodiment, as shown in FIG. 10B, the control circuit 101 can further include a voltage conversion module 1014, where the voltage conversion module 1014 is configured to convert the power supply voltage provided by the power supply selection circuit 106 into a working voltage required by the read-write control chip 1011. Figure 5 Optionally, as shown in FIG. 10B, the voltage conversion module 1014 can convert the power supply voltage (e.g., 5V or 3.3V) into a working voltage (e.g., 3.3V and / or 1.2V) required by the read-write control chip 1011.
[0096] Figure 5
[0097] Optionally, if no internal LDO (Low-dropout Regulator) module is set in the control circuit 101 and a DC-DC (Direct Current-Direct Current) module is set, the voltage conversion module 1014 can include the first capacitor C22, the second capacitor C23, the first inductor L3 and the fourth resistor R37 as shown in Figure 5 If the internal LDO module is set in the control circuit 101, the voltage conversion module 1014 can include the fifth resistor R38, which is not limited in the embodiment. Figure 5
[0098] Further optionally, for the control circuit 101, the other electronic components contained in the voltage conversion module 1014, the connection relationship between the electronic components contained therein and the connection relationship between the electronic components contained therein and other circuit structures are specifically referred to Figure 5 .
[0099] It can be seen that by setting the voltage conversion module in the control circuit, the power supply voltage can be converted into the working voltage required by the read-write control chip under the condition of accessing different power supply voltages, the voltage conversion stability and accuracy are improved, thereby facilitating the improvement of the operation stability of the read-write control chip and the use flexibility and reliability of the circuit.
[0100] In the optional embodiment, the control circuit 101 can also include the first electromagnetic interference suppression module 1015, the second electromagnetic interference suppression module 1016, the third electromagnetic interference suppression module 1017 and the fourth electromagnetic interference suppression module 1018 as shown in Figure 5
[0101] Optionally, for the control circuit 101, the electronic components contained in the first electromagnetic interference suppression module 1015, the second electromagnetic interference suppression module 1016, the third electromagnetic interference suppression module 1017 and the fourth electromagnetic interference suppression module 1018, the connection relationship between the electronic components contained therein and the connection relationship between the electronic components contained therein and other circuit structures are specifically referred to Figure 5 .
[0102] It can be seen that by setting multiple electromagnetic interference suppression modules in the control circuit, the electromagnetic interference in the circuit can be suppressed, which is conducive to the normal operation of the circuit and the improvement of the stability of the circuit, thereby facilitating the improvement of the read-write control stability of the memory card.
[0103] In another optional embodiment, the types of the memory cards that can be accessed by the first memory card circuit 102 and the second memory card circuit 103 are the first memory card type, and the type of the memory card that can be accessed by the third memory card circuit 104 is the second memory card type.
[0104] As can be seen, this optional embodiment can access multiple types of memory cards, broaden the read and write types of memory cards, and can simultaneously or separately read and write multiple types or the same type of memory cards, thereby further improving the read and write control flexibility of memory cards and realizing efficient read and write of multiple types or the same type of memory cards.
[0105] In this optional embodiment, the first memory card type may be an SD card type, and the second memory card type may be a TF card type.
[0106] Therefore, this circuit can simultaneously read and write two SD cards, or simultaneously read and write one SD card and one TF card, improving the read and write efficiency and flexibility of multiple memory cards.
[0107] In this optional embodiment, optionally, such as Figure 8 As shown, Figure 8 This is a schematic diagram of the structure of a first memory card circuit disclosed in an embodiment of the present invention. The first memory card circuit 102 may include a first SD card slot 1021 (i.e., as shown in the diagram). Figure 8 As shown in SD1); Figure 10 As shown, Figure 10 This is a schematic diagram of the structure of a third memory card circuit disclosed in an embodiment of the present invention. The third memory card circuit 104 includes a TF card slot 1041 (i.e., as shown in the diagram). Figure 10 The TF shown is given, where:
[0108] The data terminals of the first SD card slot 1021 and the TF card slot 1041 are electrically connected to the first memory card data terminal of the read / write control chip 1011, respectively. The clock signal terminals of the first SD card slot 1021 and the TF card slot 1041 are electrically connected to the first clock signal terminal of the read / write control chip 1011, respectively. The command terminals of the first SD card slot 1021 and the TF card slot 1041 are electrically connected to the first command terminal of the read / write control chip 1011, respectively. The insertion detection terminal of the first SD card slot 1021... The insertion detection terminal of the TF card slot 1041 is electrically connected to the first insertion detection terminal of the read / write control chip 1011. The write protection terminal of the first SD card slot 1021 and the write protection terminal of the TF card slot 1041 are electrically connected to the first write protection terminal of the read / write control chip 1011. The power supply terminal of the first SD card slot 1021 and the power supply terminal of the TF card slot 1041 are electrically connected to the first power supply terminal of the read / write control chip 1011. The ground terminal of the first SD card slot 1021 and the ground terminal of the TF card slot 1041 are used for grounding.
[0109] For example, the first memory card data terminal of the read / write control chip 1011 may include, as shown below: Figure 5The first clock signal end of the read-write control chip 1011 can be SD1_D0, SD1_D1, SD1_D2 or SD1_D3 as shown in the figure. Figure 5 The first command end of the read-write control chip 1011 can be SD1_CLK as shown in the figure. Figure 5 The first insertion detection end of the read-write control chip 1011 can be SD1_CMD as shown in the figure. Figure 5 The first write protection end of the read-write control chip 1011 can be SD1_CDZ as shown in the figure. Figure 5 The first power supply end of the read-write control chip 1011 can be SD1_WP as shown in the figure. Figure 5 The first power supply end of the read-write control chip 1011 can be SD1_V33 as shown in the figure.
[0110] Optionally, as shown in the figure, Figure 8 The first storage card circuit 102 can further include a fifth electromagnetic interference suppression module 1022 and a first electrostatic protection module 1023.
[0111] Optionally, for the first storage card circuit 102, the electronic components included in the fifth electromagnetic interference suppression module 1022 and the first electrostatic protection module 1023, the connection relationship between the electronic components included therein, and the connection relationship between the electronic components included therein and other circuit structures are specifically refer to Figure 8 .
[0112] Optionally, as shown in the figure, Figure 10 The third storage card circuit 104 can further include a sixth electromagnetic interference suppression module 1042 and a second electrostatic protection module 1043.
[0113] Further optionally, for the first storage card circuit 102, the electronic components included in the sixth electromagnetic interference suppression module 1042 and the second electrostatic protection module 1043, the connection relationship between the electronic components included therein, and the connection relationship between the electronic components included therein and other circuit structures are specifically refer to Figure 10 .
[0114] It can be seen that by setting the first SD card seat in the first storage card circuit and the TF card seat in the third storage card circuit, and by multiplexing the first storage card access end of the read-write control chip through the first SD card seat and the TF card seat, the access flexibility of the multi-storage card is improved while the circuit development cost is reduced, thereby facilitating the improvement of the efficiency and flexibility between the data transmission and signal transmission between the storage card circuit and the control circuit, and further facilitating the improvement of the read-write control efficiency and the read-write control flexibility of the multi-storage card.
[0115] In this optional embodiment, optionally, as shown in the figure, Figure 9 Figure 9 This is a schematic diagram of the structure of a second memory card circuit disclosed in an embodiment of the present invention. The second memory card circuit 103 may include a second SD card slot 1031 (i.e., as shown in the diagram). Figure 9 As shown in SD2), where:
[0116] The data terminal of the second SD card slot 1031 is electrically connected to the second memory card data terminal of the read / write control chip 1011. The clock signal terminal of the second SD card slot 1031 is electrically connected to the second clock signal terminal of the read / write control chip 1011. The command terminal of the second SD card slot 1031 is electrically connected to the second command terminal of the read / write control chip 1011. The insertion detection terminal of the second SD card slot 1031 is electrically connected to the insertion detection terminal of the read / write control chip 1011. The write protection terminal of the second SD card slot 1031 is electrically connected to the second write protection terminal of the read / write control chip 1011. The power supply terminal of the second SD card slot 1031 is electrically connected to the second power supply terminal of the read / write control chip 1011. The ground terminal of the second SD card slot 1031 is used for grounding.
[0117] For example, the second memory card data terminal of the read / write control chip 1011 may include, as shown below: Figure 5 The second clock signal terminals of the read / write control chip 1011, as shown in SD2_D0, SD2_D1, SD2_D2, and SD2_D3, can be as follows: Figure 5 As shown in SD2_CLK, the second command terminal of the read / write control chip 1011 can be as follows: Figure 5 As shown in the SD2_CMD, the second insertion detection terminal of the read / write control chip 1011 can be as follows: Figure 5 As shown in the SD2_CDZ, the second write protection terminal of the read / write control chip 1011 can be as follows: Figure 5 As shown in the diagram, the second power supply terminal of the read / write control chip 1011 of the SD2_WP can be as follows: Figure 5 The SD2_V33 shown is shown.
[0118] Optional, such as Figure 9 As shown, the second memory card circuit 103 may also include a seventh electromagnetic interference suppression module 1032 and a third electrostatic protection module 1033.
[0119] Further optionally, for the second memory card circuit 103, the electronic components included in the seventh electromagnetic interference suppression module 1032 and the third electrostatic discharge protection module 1033, the connection relationships between the electronic components included, and the connection relationships between the electronic components included and other circuit structures are specifically referred to Figure 9 .
[0120] Optionally, when using a Micro SD connector, the first write protection terminal and the second write protection terminal of the read / write control chip 1011 can be grounded.
[0121] It can be seen that by arranging the second SD card seat in the second storage card circuit, the SD card can be conveniently accessed, the selectivity and flexibility of the access of the SD card can be improved, the efficiency of data transmission and signal transmission between the storage card circuit and the control circuit can be improved, and the read-write control efficiency and flexibility of the multi-storage card can be improved.
[0122] In another optional embodiment, as shown in Figure 2 The read-write control circuit 10 of the multi-storage card can further include a data storage circuit 107, wherein:
[0123] The first end of the data storage circuit 107 is electrically connected to the data storage end of the control circuit 101, the second end of the data storage circuit 107 is used for electrically connecting the system power supply, and the third end of the data storage circuit 107 is used for grounding.
[0124] The data storage circuit 107 is used for storing the configuration information corresponding to the control circuit 101 and the data transmission record between the control circuit 101 and each storage card circuit; and each storage card circuit is one of the first storage card circuit 102, the second storage card circuit 103 and the third storage card circuit 104.
[0125] It can be seen that the optional embodiment can store the corresponding configuration information and data transmission record of the storage circuit by arranging the data storage circuit, so as to improve the recording convenience and stability of the use information of the read-write control circuit, facilitate the user to find the use record of the read-write control circuit, and improve the use reliability of the read-write control circuit.
[0126] In the optional embodiment, as shown in Figure 11 Figure 11 is a structural diagram of a data storage circuit according to an embodiment of the present application, the data storage circuit 107 can include an SPI FLASH (Serial Peripheral Interface Flash) control module 1071 and an eighth electromagnetic interference suppression module 1072, wherein:
[0127] The chip selection end of the SPI FLASH control module 1071 is electrically connected with the chip selection end of the read-write control chip 1011, the first data transmission end of the SPI FLASH control module 1071 is electrically connected with the first SPI transmission end of the read-write control chip 1011, the maintaining end of the SPI FLASH control module 1071 is respectively used for electrically connecting the system power supply and the ground, the clock signal end of the SPI FLASH control module 1071 is electrically connected with the first end of the eighth electromagnetic interference suppression module 1072, the second end of the eighth electromagnetic interference suppression module 1072 is electrically connected with the SPI clock signal end of the read-write control chip 1011, the second data transmission end of the SPI FLASH control module 1071 is electrically connected with the second SPI transmission end of the read-write control chip 1011, the power supply end of the SPI FLASH control module 1071 is used for electrically connecting the system power supply, the write protection end of the SPI FLASH control module 1071 is used for electrically connecting the system power supply, and the ground end of the SPI FLASH control module 1071 is used for grounding with the third end of the eighth electromagnetic interference suppression module 1072.
[0128] For example, as shown in Figure 5 , the chip selection end of the read-write control chip 1011 can be SPI_CS, the first SPI transmission end of the read-write control chip 1011 can be SPI_MISO, the SPI clock signal end of the read-write control chip 1011 can be SPI_CK_IC, and the second SPI transmission end of the read-write control chip 1011 can be SPI_MOSI.
[0129] Optionally, for the data storage circuit 107, the electronic components included in the SPI FLASH control module 1071 and the eighth electromagnetic interference suppression module 1072, the connection relationship between the electronic components included therein, and the connection relationship between the electronic components included therein and other circuit structures refer to Figure 11 .
[0130] Optionally, as shown in Figure 11 , the SPI FLASH control module 1071 can include an SPI FLASH chip U4; further optionally, the capacity of the SPI FLASH chip U4 included in the SPI FLASH control module 1071 can be greater than or equal to 1Mbit, which is not limited in the embodiment.
[0131] It can be seen that by arranging the SPI FLASH chip in the data storage circuit, the stability and convenience of data storage can be improved through the high speed, low power consumption and durability of the SPI FLASH chip, which is conducive to improving the record reliability of the use record of the read-write control circuit; and by arranging the electromagnetic interference suppression module, the circuit operation stability can be improved.
[0132] In this embodiment of the utility model, for example, such as Figure 12 As shown, when the read / write control circuit for multiple memory cards includes at least a USB interface USB1, a read / write control chip U1, an SD card slot SD1, an SD card slot SD2, and a TF card slot TF, the layout of the read / write control circuit for multiple memory cards in the electronic device in which it is applied can be as follows: Figure 12 As shown, Figure 12 This is a schematic diagram of another multi-memory card read / write control circuit disclosed in this utility model embodiment. This utility model embodiment is not limited.
[0133] Example 2
[0134] Please see Figure 8 , Figure 8 This is a schematic diagram of the structure of an electronic device disclosed in an embodiment of the present invention. The electronic device includes a multi-memory card read / write control circuit as described in any of the embodiments in Embodiment 1. The functions that the electronic device can perform include, but are not limited to, the ability to perform read / write operations on multiple memory cards. It should be noted that for a detailed description of the multi-memory card read / write control circuit, please refer to the specific description in Embodiment 1; it will not be repeated in this embodiment.
[0135] It is evident that implementation Figure 8 The described electronic device, when a memory card is detected by a target access terminal, if the target access terminal includes a first memory card access terminal, then through a control circuit, connects the first memory card connected to the first memory card circuit or the third memory card connected to the third memory card circuit as the target memory card to the main control device; if the target access terminal includes a second memory card access terminal, then through a control circuit, connects the second memory card connected to the second memory card circuit as the target memory card to the main control device for reading and writing of the target memory card. This allows two memory card circuits to reuse the same memory card access terminal, thereby enabling simultaneous or individual reading and writing of multiple memory cards, improving the efficiency and flexibility of memory card read and write control, and achieving efficient reading and writing of multiple memory cards. This helps users manage or use data from multiple memory cards simultaneously.
[0136] The above provides a detailed description of a multi-memory card read / write control circuit and electronic device disclosed in the embodiments of this utility model. Specific embodiments have been used to illustrate the principles and implementation methods of this utility model. However, the above preferred embodiments are not intended to limit this utility model. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this utility model. At the same time, for those skilled in the art, based on the ideas of this utility model, there will be changes in the specific implementation methods and application scope without departing from the spirit and scope of this utility model. Therefore, the protection scope of this utility model is determined by the scope defined in the claims.
Claims
1. A read / write control circuit for multiple memory cards, characterized in that, The multi-storage card read-write control circuit comprises a control circuit, a first storage card circuit, a second storage card circuit and a third storage card circuit, wherein: The power supply communication end of the control circuit is used for electrically connecting a host device, the first storage card access end of the control circuit is electrically connected with the first end of the first storage card circuit and the first end of the third storage card circuit respectively, and the second storage card access end of the control circuit is electrically connected with the first end of the second storage card circuit; The control circuit is used for, when a storage card is detected through a target access end, accessing a target storage card corresponding to the target access end to the host device to perform read-write operation on each target storage card; The target access end comprises the first storage card access end and / or the second storage card access end; when the target access end comprises the first storage card access end, the target storage card comprises a first storage card connected with the first storage card circuit or a third storage card connected with the third storage card circuit; when the target access end comprises the second storage card access end, the target storage card comprises a second storage card connected with the second storage card circuit.
2. The multi-memory card read / write control circuit according to claim 1, wherein The multi-storage card read-write control circuit further comprises a power supply communication circuit, wherein: The first end of the power supply communication circuit is electrically connected with the power supply communication end of the control circuit, and the second end of the power supply communication circuit is used for electrically connecting the host device; The power supply communication circuit is used for, after accessing the host device, supplying power to the control circuit and controlling the transmission of host control signals and data between the host device and the control circuit.
3. The multi-memory card read / write control circuit according to claim 2, wherein The control circuit comprises a read-write control chip, wherein: The power supply communication end of the read-write control chip is electrically connected with the first end of the power supply communication circuit; the first storage card access end of the read-write control chip is electrically connected with the first end of the first storage card circuit and the first end of the third storage card circuit respectively, and the second storage card access end of the read-write control chip is electrically connected with the first end of the second storage card circuit; and the grounding end of the read-write control chip is used for grounding.
4. The multi-memory card read / write control circuit according to claim 3, wherein The storage card type that can be accessed by the first storage card circuit and the storage card type that can be accessed by the second storage card circuit are both first storage card types, and the storage card type that can be accessed by the third storage card circuit is a second storage card type.
5. The multi-memory card read / write control circuit according to claim 4, wherein The first storage card type is an SD card type, and the second storage card type is a TF card type; The first storage card circuit comprises a first SD card seat, and the third storage card circuit comprises a TF card seat, wherein: The first storage card circuit comprises a first SD card seat, and the third storage card circuit comprises a TF card seat, wherein: The data end of the first SD card seat, the data end of the TF card seat are electrically connected with the first memory card data end of the read-write control chip respectively, the clock signal end of the first SD card seat, the clock signal end of the TF card seat are electrically connected with the first clock signal end of the read-write control chip respectively, the command end of the first SD card seat, the command end of the TF card seat are electrically connected with the first command end of the read-write control chip respectively, the insertion detection end of the first SD card seat, the insertion detection end of the TF card seat are electrically connected with the first insertion detection end of the read-write control chip respectively, the write protection end of the first SD card seat, the write protection end of the TF card seat are electrically connected with the first write protection end of the read-write control chip respectively, the power supply end of the first SD card seat, the power supply end of the TF card seat are electrically connected with the first power supply end of the read-write control chip respectively, the ground end of the first SD card seat, the ground end of the TF card seat are used for grounding respectively.
6. The multi-memory card read / write control circuit according to claim 5, wherein The second memory card circuit comprises a second SD card seat, wherein: The data end of the second SD card seat is electrically connected with the second memory card data end of the read-write control chip, the clock signal end of the second SD card seat is electrically connected with the second clock signal end of the read-write control chip, the command end of the second SD card seat is electrically connected with the second command end of the read-write control chip, the insertion detection end of the second SD card seat is electrically connected with the insertion detection end of the read-write control chip, the write protection end of the second SD card seat is electrically connected with the second write protection end of the read-write control chip, the power supply end of the second SD card seat is electrically connected with the second power supply end of the read-write control chip, and the ground end of the second SD card seat is used for grounding.
7. The multi-memory card read / write control circuit according to claim 3, wherein The control circuit further comprises a clock module, wherein: The input end of the clock module is electrically connected with the first crystal oscillator end of the read-write control chip, the output end of the clock module is electrically connected with the second crystal oscillator end of the read-write control chip, and the ground end of the clock module is used for grounding; The clock module is used for providing a clock signal to the read-write control chip.
8. The multi-memory card read / write control circuit according to claim 3, wherein The control circuit further comprises a display module, wherein: The first end of the display module is electrically connected with the first display end of the read-write control chip, the second end of the display module is electrically connected with the second display end of the read-write control chip, and the third end of the display module is used for grounding; The display module is used for displaying the access state of the corresponding memory card of the read-write control chip.
9. The multi-memory card read / write control circuit according to any one of claims 1 to 8, wherein, The read-write control circuit of the multiple memory cards further comprises a data storage circuit, wherein: The first end of the data storage circuit is electrically connected with the data storage end of the control circuit, the second end of the data storage circuit is used for electrically connecting a system power supply, and the third end of the data storage circuit is used for grounding; The data storage circuit is used for storing the configuration information corresponding to the control circuit and the data transmission record between the control circuit and each memory card circuit; wherein each memory card circuit is one of the first memory card circuit, the second memory card circuit and the third memory card circuit.
10. An electronic device, comprising: The electronic device comprises a device body and the multi-memory card read-write control circuit as claimed in any one of claims 1-9.