A mobile solid-state hard disk circuit with external CC logic function and a mobile solid-state hard disk

Abstract

The present invention discloses a mobile solid-state hard disk circuit and a mobile solid-state hard disk with an external CC logic function, wherein the circuit includes: an interface module for data exchange between the mobile solid-state hard disk and peripheral devices; a flash memory module for reading and storing data; a power module for supplying power to each functional module on the circuit; a control module for controlling the operation of each functional module on the circuit; a channel switching module for identifying whether the mobile solid-state hard disk is in a forward or reverse plug-in state, and switching a designated channel for communication between the interface module and the control module; wherein the channel switching module includes a switching unit and a first peripheral circuit, wherein the first peripheral circuit is used to identify whether the mobile solid-state hard disk is in a forward or reverse plug-in state, the switching unit is used to switch channels, and the switching unit includes a DeMuxSwitch or a MuxSwitch. Compared with the prior art, the present circuit does not need to use a dedicated Type-C management chip, but uses a channel switching chip, which greatly reduces the production cost of the mobile solid-state hard disk.

Description

Technical Field

[0001] The present invention relates to the field of mobile solid-state hard disks, and in particular to a mobile solid-state hard disk circuit with an external CC logic function and a mobile solid-state hard disk. Background Art

[0002] Mobile solid-state hard drives are gradually being accepted and used by the general public due to their advantages such as fast reading and writing speed, low power consumption and no noise. In the mobile solid-state hard drive circuit with Type-C interface, a dedicated Type-C management chip is required. This chip has a built-in CC function, which is used to identify whether the hard drive is in the forward or reverse insertion state, thereby switching a specific channel to achieve data interaction. Among the existing Type-C management chips, common models include EJ179V and AQ302, which are relatively expensive. Therefore, it is very important to reduce the production cost of mobile solid-state hard drives while maintaining the same performance. Summary of the invention

[0003] The main purpose of the present invention is to provide a mobile solid-state hard disk circuit with an external CC logic function, aiming to solve the technical problem of reducing the production cost of the mobile solid-state hard disk.

[0004] The present invention provides a mobile solid-state hard disk circuit with an external CC logic function, comprising:

[0005] Interface module, used for data exchange between the mobile solid-state hard disk and peripheral devices;

[0006] Flash memory module for reading and storing data;

[0007] A power module, used to supply power to each module on the mobile solid-state hard disk circuit;

[0008] A control module, used to control the operation of each module on the mobile solid-state hard disk circuit;

[0009] A channel switching module, used to implement CC logic functions and to switch a designated channel, wherein the designated channel is used to implement communication between the interface module and the control module, wherein the channel switching module includes a switching unit and a first peripheral circuit, wherein a signal output end of the first peripheral circuit is connected to a signal input end of the switching unit, the first peripheral circuit is used to identify whether the mobile solid-state hard disk is in a forward insertion state or a reverse insertion state, the switching unit is used to switch the designated channel, and the switching unit includes a DeMuxSwitch or a Mux Switch;

[0010] The interface module is electrically connected to the channel switching module, the control module, the flash memory module and the power supply module in sequence.

[0011] Preferably, the first peripheral circuit includes a first resistor, a second resistor, a third resistor and a fourth resistor;

[0012] The interface module includes a first interface, a second interface, a fifth resistor and a first power supply output terminal;

[0013] The first interface is grounded through a first resistor;

[0014] The first end of the second interface is grounded through the second resistor and the third resistor, and the first power supply output end of the interface module is connected to the switching signal input end of the switching unit through the fifth resistor and the fourth resistor, wherein the second resistor is connected in series with the third resistor.

[0015] Preferably, the control module includes a clock module, a control chip and a second peripheral circuit, wherein the second peripheral circuit is used to supply power to the power module and the channel switching module;

[0016] The interface module is electrically connected to the second peripheral circuit, and the second peripheral circuit is electrically connected to the channel switching module and the power supply module respectively;

[0017] The control chip is electrically connected to the second peripheral circuit and the power module;

[0018] The clock module is electrically connected to the control chip.

[0019] Preferably, the second peripheral circuit includes a first step-down unit and a second step-down unit;

[0020] The power supply module includes a first power supply unit and a second power supply unit;

[0021] The first power supply output end of the first step-down unit is connected to the power supply input end of the first power supply unit, the first power supply output end of the first power supply unit is connected to the first power supply input end of the control chip, and the second power supply output end of the first power supply unit is connected to the first power supply input end of the flash memory module;

[0022] The second power supply output end of the first step-down unit is connected to the power supply input end of the channel switching module;

[0023] The first power supply output end of the second step-down unit is connected to the power supply input end of the second power supply unit, the first power supply output end of the second power supply unit is connected to the second power supply input end of the control chip, and the second power supply output end of the second power supply unit is connected to the third power supply input end of the control chip;

[0024] The second power supply output terminal of the second voltage reduction unit is connected to the second power supply input terminal of the flash memory module.

[0025] Preferably, the interface module, the switching unit, the control chip and the flash memory module are electrically connected in sequence.

[0026] Preferably, the second peripheral circuit further includes a third step-down unit;

[0027] The power supply input end of the third step-down unit is connected to the third power supply output end of the first step-down unit;

[0028] The power supply output terminal of the third step-down unit is connected to the fourth power supply input terminal of the control chip.

[0029] Preferably, the flash memory module further includes a flash memory chip matrix, wherein the flash memory chip matrix includes at least two flash memory chips, and each flash memory chip is electrically connected to the control module and the power module respectively.

[0030] Preferably, the mobile solid-state hard disk circuit with external CC logic function further includes an LED module;

[0031] The LED modules are electrically connected to the power module and the control module respectively.

[0032] The present invention also provides a mobile solid-state hard disk, comprising the mobile solid-state hard disk circuit with the external CC logic function.

[0033] The beneficial effect of the present invention is that: this circuit does not need to use a dedicated Type-C management chip, but instead uses a channel switching chip, namely a DeMux Switch or a Mux Switch, to realize the signal switching function required for Type-C double-sided plugging and unplugging, thereby greatly reducing the production cost of the mobile solid-state hard drive while ensuring performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a structural schematic diagram of a first embodiment of a mobile solid-state hard disk circuit with an external CC logic function according to the present invention;

[0035] Figure 2 for Figure 1 A first partial schematic diagram of a mobile solid state hard disk circuit with an external CC logic function;

[0036] Figure 3 for Figure 1 A second partial schematic diagram of a mobile solid state hard disk circuit with an external CC logic function;

[0037] Figure 4 for Figure 2 A structural schematic diagram of a channel switching module of a mobile solid-state hard disk circuit with an external CC logic function;

[0038] Figure 5 for Figure 2 A structural diagram of an interface module of a mobile solid-state hard disk circuit with an external CC logic function;

[0039] Figure 6 for Figure 2 A structural schematic diagram of a control module of a mobile solid-state hard disk circuit with an external CC logic function;

[0040] Figure 7 for Figure 2 A structural schematic diagram of an LED module of a mobile solid-state hard disk circuit with an external CC logic function;

[0041] Figure 8 for Figure 2 A structural schematic diagram of a power module of a mobile solid-state hard disk circuit with an external CC logic function.

[0042] Description of labels:

[0043] 1. Interface module;

[0044] 2. Flash memory module;

[0045] 3. Power supply module; 31. First power supply unit; 32. Second power supply unit;

[0046] 4. Control module; 41. Clock module; 42. Control chip; 43. Second peripheral circuit;

[0047] 5. Channel switching module; 51. Switching unit; 52. First peripheral circuit;

[0048] 6. LED module.

[0049] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0050] It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not used to limit the present invention.

[0051] Reference Figures 1 to 4 The present invention provides a mobile solid-state hard disk circuit with an external CC logic function, comprising:

[0052] Interface module 1, used for data exchange between the mobile solid-state hard disk and peripheral devices;

[0053] Flash memory module 2, used for reading and storing data;

[0054] The power module 3 is used to supply power to each functional module on the mobile solid-state hard disk circuit;

[0055] The control module 4 is used to control the operation of each functional module on the mobile solid state hard disk circuit;

[0056] A channel switching module 5 is used to identify whether the mobile solid-state hard disk is in a forward insertion state or a reverse insertion state, and is used to switch a specified channel, wherein the specified channel is used to realize communication between the interface module 1 and the control module 4;

[0057] The channel switching module 5 includes a switching unit 51 and a first peripheral circuit 52, wherein a signal output end of the first peripheral circuit 52 is connected to a signal input end of the switching unit 51, wherein the first peripheral circuit 52 is used to identify whether the mobile solid-state hard disk is in a forward insertion state or a reverse insertion state, and the switching unit 51 is used to switch a designated channel, and the switching unit 51 includes a DeMuxSwitch or a Mux Switch;

[0058] The interface module 1 is electrically connected to the channel switching module 5 , the control module 4 , the flash memory module 2 and the power module 3 in sequence.

[0059] In the embodiment of the present invention, the CC function includes identifying whether the mobile solid-state hard disk is inserted forward or backward, and switching between master and slave devices. Figure 5 As shown, the interface module 1 includes a Type-C interface. The first peripheral circuit 52 includes a first resistor R30, a second resistor R31, a third resistor R1 and a fourth resistor R73. The first interface CC1 is grounded through the first resistor R30, and one end of the second interface CC2 is grounded through the second resistor R31 and the third resistor R1, wherein the second resistor R31 and the third resistor R1 are arranged in series. The first power supply output terminal VUSB of the interface module 1 is connected to the switching signal input terminal (i.e., SEL pin) of the connection switching unit 51 through the fifth resistor R25 and the fourth resistor R73. The host-side CC pin has its own pull-up resistor. When the mobile solid-state hard disk is plugged into the host, the host's CCpin will detect the pull-down resistor (i.e., the first resistor R30 and the second resistor R31 are pulled down, and the voltage of the first resistor R30 and the second resistor R31 is pulled down from 5V to 0.417-0.85V), indicating that the mobile solid-state hard disk is connected to the host and the master-slave mode switching is completed, wherein the host is the master device and the mobile solid-state hard disk is the slave device.

[0060] In an embodiment of the present invention, the function of the first peripheral circuit 52 is to identify whether the mobile hard disk is in a forward insertion state or a reverse insertion state. The specific principle is that when the mobile solid-state hard disk is forward inserted, the external voltage of the first interface CC1 is reduced by pulling down the first resistor R30, and the switching unit 51 receives the reduced external voltage, and it can be known that the mobile solid-state hard disk is in a forward insertion state; when the mobile solid-state hard disk is reversely inserted, the external voltage of the second interface CC2 is pulled down by the second resistor R31. After the switching unit 51 receives the reduced external voltage, it can be known that the mobile solid-state hard disk is in a reverse insertion state. In an embodiment of the present invention, the process of the switching unit 51 and the first peripheral circuit 52 working in coordination is as follows: when the mobile solid-state hard disk is inserted, the first interface CC1 is connected, the second interface CC2 is suspended, and the voltage at the second interface CC2 end is 0. This level signal realizes the master-slave mode switching. The switching unit 51 is U1, and the SEL end is pulled up by the fourth resistor R73, and is pulled down by the third resistor R1 and the second resistor R31, so that the SEL end voltage is clamped to 1.75V to 1.95V. At this time, the interface module 1 interacts with the control module 4 through the first channel, that is, the No. 3, No. 4, No. 7 and No. 8 pins of U1 are connected to the No. 19, No. 18, No. 17 and No. 16 pins respectively. When the mobile solid-state hard disk is reversely inserted, the second interface CC2 is connected, and the second interface CC2 clamps the CC2 voltage at 0.417-0.85V through the pull-up resistor and R31 pull-down resistor of the host end, and the CC2 level signal realizes the master-slave mode switching. The SEL end is pulled up in parallel by the pull-up resistor and the fourth resistor R73 of the host end, and is pulled down in series by the third resistor R1 and the second resistor R31, so that the SEL end voltage is clamped at 2.05V-2.2V. At this time, the interface module 1 interacts with the control module 4 through the second channel, that is, the No. 3, No. 4, No. 7 and No. 8 pins of U1 are connected to the No. 15, No. 14, No. 13 and No. 12 pins respectively. Therefore, the channel for the interaction between the interface module 1 and the control module 4 is switched by the change of the SEL end voltage. When the SEL end voltage is less than 2V, the first channel is used for interaction; when the SEL end voltage is ≥2V, the second channel is used for interaction. Therefore, the external plug-in of the CC logic function is realized by the cooperation of the first peripheral circuit 52 and the switching unit 51. This circuit does not need to use a dedicated Type-C management chip, but instead uses a channel switching chip, namely a DeMux Switch (shunt switch) or a Mux Switch (multiplexer switch), to implement the signal switching function required for Type-C double-sided plugging and unplugging, thereby significantly reducing the production cost of the mobile solid-state hard drive while ensuring performance.

[0061] Reference Figure 6 , the control module 4 includes a clock module 41, a control chip 42 and a second peripheral circuit 43, wherein the second peripheral circuit 43 is used to supply power to the power module 3 and the channel switching module 5;

[0062] The interface module 1 is electrically connected to the second peripheral circuit 43, and the second peripheral circuit 43 is electrically connected to the channel switching module 5 and the power supply module 3 respectively;

[0063] The control chip 42 is electrically connected to the second peripheral circuit 43 and the power module 3;

[0064] The clock module 41 is electrically connected to the control chip 42 .

[0065] In an embodiment of the present invention, when a mobile solid-state hard disk is inserted into a host (such as a computer), the host provides power to the mobile solid-state hard disk and inputs a 5V power supply voltage to the mobile solid-state hard disk. Therefore, the interface module 1 generates a 5V input voltage, transmits it to the control chip 42, and reduces the input voltage to 3.3V and 1.2V respectively through the second peripheral circuit 43 (in other embodiments of the present invention, the voltage reduction can be adjusted according to actual needs); the second peripheral circuit 43 outputs the 3.3V voltage to the switching unit 51 and the power module 3 respectively, and the power module 3 generates a 3.3V voltage and outputs it to the control chip 42 and the flash memory module 2 respectively, and generates a 1.2V voltage and outputs it to the control chip 42, so that the control chip 42, the flash memory module 2 and the switching unit 51 can work normally, wherein the clock module 41 transmits a 24MHZ clock signal to the control chip 42. Specifically for this circuit, Figure 6As shown, the second peripheral circuit 43 includes a first step-down unit U16 and a second step-down unit U17 , and the power supply module 3 includes a first power supply unit 31 and a second power supply unit 32 . The first power supply output end (LX pin) of the first step-down unit U16 is connected to the power supply input end of the first power supply unit 31, and a 3.3V working voltage is input to the first power supply unit 31; the first power supply unit 31 outputs the 3.3V working voltage to the first power supply unit 31. In order to prevent crosstalk between different power supplies and the functional modules in the circuit, the input voltage input to the first power supply unit 31 is divided into A3.3V and D3.3V by the action zone of the magnetic bead L8, wherein A3.3V and D3.3V are both direct current, A3.3V provides the working voltage to the control chip 42 through the No. 55 pin of the control chip 42, and D3.3V provides the working voltage to the flash memory module 2 through the J3, J9, D7 and P5 pins of the flash memory chips U3 to U6; in addition, the first step-down unit U16 also outputs the 3.3V working voltage to the power supply input end of the channel switching module 5 (i.e., the No. 1 and No. 10 pins of the switching unit 51) through the LX pin. In other embodiments of the present invention, the first power supply output terminal (LX pin) of the second step-down unit U17 is connected to the power supply input terminal of the second power supply unit 32, and a 1.2V working voltage is input to the second power supply unit 32. In order to prevent crosstalk between different power supplies and functional modules in the circuit, the input voltage input to the second power supply unit 32 is divided into A1.2V and D1.2V by the magnetic bead L5, wherein A1.2V and D1.2V are both direct currents, and A1.2V supplies power to the control chip 42 through the No. 7 and No. 26 pins of the control chip 42, and D1.2V supplies power to the control chip 42 through the No. 12 pin of the control chip 42. In addition, the second step-down unit U17 inputs a 1.2V working voltage to the second power supply input terminals (i.e., the L3, L9, P2, P3, P9, P10, D2, D3, D9, D10, G3, and G9 pins) of the flash memory chips U3 to U6 through the LX pin, so that the flash memory module 2 can work normally.

[0066] Reference Figure 2 , the interface module 1, the switching unit 51, the control chip 42 and the flash memory module 2 are electrically connected in sequence.

[0067] In an embodiment of the present invention, the interface module 1, the switching unit 51, the control chip 42 and the flash memory module 2 are electrically connected in sequence. Take the process of storing and reading data in a mobile solid-state hard disk as an example. Taking the mobile solid-state hard disk storing data as an example, when the mobile solid-state hard disk is connected, the A2, A3, B10 and B11 pins of the chip J1 of the interface module 1 are connected to the peripheral device as signal input terminals, and the external data is connected to the 19th, 18th, 17th and 16th pins respectively through the 3rd, 4th, 7th and 8th pins of the switching unit 51 (U1), and the 19th, 18th, 17th and 16th pins of the switching unit 51 are connected to the signal input terminal (63rd, 62nd, 60th and 59th pins) of the control chip 42 as signal output terminals. The control chip 42 uses pins 10 to 13, pins 20 to 22, pins 29 to 32 and pins 37 to 40 as signal output ends to connect the signal input ends of the flash memory chip (i.e., pins M2 to M10, and pins F2 to F10), thereby completing the storage of data from the host to the flash memory module 2.

[0068] During the data reading process, the original signal input terminal becomes the signal output terminal, and the original signal output terminal becomes the signal input terminal. The data flow direction is opposite to the above process, so it will not be repeated.

[0069] In the embodiment of the present invention, when the mobile solid-state hard disk is reversely inserted, the mobile solid-state hard disk is used as an example to store data. The A10, A11, B2 and B3 pins of the chip J1 of the interface module 1 are connected to the peripheral device as signal input terminals, and the external data is connected to the 15th, 14th, 13th and 12th pins through the 3rd, 4th, 7th and 8th pins of the switching unit 51 (U1), respectively, and connected to the signal input terminal (63rd, 62nd, 60th and 59th pins) of the control chip 42 through the 15th, 14th, 13th and 12th pins of the switching unit 51 as signal output terminals. The control chip 42 uses the 10th to 13th pins, the 20th to 22nd pins, the 29th to 32nd pins and the 37th to 40th pins as signal output terminals to connect the signal input terminal (i.e., the M2th to M10th pins, and the F2th to F10th pins) of the flash memory chip, thereby completing the storage of data from the host to the flash memory module 2.

[0070] During the data reading process, the original signal input terminal becomes the signal output terminal, and the original signal output terminal becomes the signal input terminal. The data flow direction is opposite to the above process, so it will not be repeated.

[0071] Reference Figure 6 , the second peripheral circuit 43 also includes a third step-down unit U12;

[0072] The power supply input end of the third step-down unit U12 is connected to the third power supply output end of the first step-down unit U16;

[0073] The power supply output terminal of the third step-down unit U12 is connected to the fourth power supply input terminal of the control chip 42 .

[0074] In an embodiment of the present invention, the third step-down unit U12 is a backup power supply for the control chip 42. Under normal circumstances, the second power supply unit 32 provides a working voltage to the control chip 42. When the mobile solid-state hard disk is in high-performance mode, the working voltage provided by the original second power supply unit 32 is not enough to support the consumption of the control chip 42. Therefore, it is necessary to provide an additional working voltage to the control chip 42 through the third step-down unit U12. The specific process is that the first step-down unit U16 outputs a voltage of 3.3V to the third step-down unit U12, and the third step-down unit U12 reduces the working voltage of 3.3V to 1.2V and outputs it to pin 46 of the control chip 42. At the same time, the second power supply unit 32 still provides a working voltage to the control chip 42. In summary, the third step-down unit U12 can meet the consumption of the mobile solid-state hard disk in high-performance mode.

[0075] Reference Figure 3 The flash memory module 2 also includes a flash memory chip matrix, wherein the flash memory chip matrix includes at least two flash memory chips, and each flash memory chip is electrically connected to the control module 4 and the power module 3 respectively.

[0076] In the embodiment of the present invention, the flash memory module 2 also includes a flash memory chip matrix, which includes at least two flash memory chips, and each flash memory chip is electrically connected to the control module 4 and the power module 3. Among them, the flash memory chip is in a dual-channel mode, that is, the M2 to M10 pins are used as the first signal input / output terminal, and the F2 to F10 pins are used as the second signal input / output terminal to interact with the peripheral device. Through the dual-channel mode, the data interaction rate of the flash memory chip can be greatly improved.

[0077] Reference Figure 2 , the mobile solid state hard disk circuit with external CC logic function also includes an LED module 6;

[0078] The LED module 6 is electrically connected to the power module 3 and the control module 4 respectively.

[0079] In the embodiment of the present invention, when the mobile solid state hard disk is plugged into the host, the LED module 6 lights up to remind the user that the mobile solid state hard disk is in working state. The specific process is that the power module 3 and the first step-down unit U16 of the control module 4 respectively provide working voltage to the LED module 6 to make it light up.

[0080] Furthermore, the present invention also provides a mobile solid-state hard disk, including the mobile solid-state hard disk circuit with the external CC logic function.

[0081] In the embodiment of the present invention, the CC function includes identifying whether the mobile solid-state hard disk is inserted forward or backward, and switching between master and slave devices. Figure 4 As shown, the interface module 1 includes a Type-C interface. The first peripheral circuit 52 includes a first resistor R30, a second resistor R31, a third resistor R1 and a fourth resistor R73. The first interface CC1 is grounded through the first resistor R30, one end of the second interface CC2 is grounded through the second resistor R31, and one end is connected to the switching signal input end (i.e., the SEL pin) of the switching unit 51 through the third resistor R1. Relative to the SEL end, the second resistor R31 and the third resistor R1 are connected in series to the ground, the CC2 pull-down resistor is R31, and the SEL pull-down resistor is the third resistor R1 and the second resistor R31, so the pull-down resistance value of the SEL end is greater than the resistance value of the CC2 end, so that CC2 and SEL have different voltages; the first power supply output end VUSB of the interface module 1 is connected to the switching signal input end (i.e., the SEL pin) of the switching unit 51 through the fifth resistor R25 and the fourth resistor R73. When the mobile solid-state hard drive is plugged into the host, the CC pin of the host will detect the pull-down resistor (i.e., the first resistor R30 and the second resistor R31 are pulled down, and the voltage of the first resistor R30 and the second resistor R31 is pulled down from 5V to 4.7V), indicating that the mobile solid-state hard drive is connected to the host and the master-slave mode switching is completed, wherein the host is the master device and the mobile solid-state hard drive is the slave device.

[0082] In an embodiment of the present invention, the function of the first peripheral circuit 52 is to identify whether the mobile hard disk is in a forward insertion state or a reverse insertion state. The specific principle is that when the mobile solid-state hard disk is forward inserted, the external voltage of the first interface CC1 is reduced by pulling down the first resistor R30, and the switching unit 51 receives the reduced external voltage, and it can be known that the mobile solid-state hard disk is in a forward insertion state; when the mobile solid-state hard disk is reversely inserted, the external voltage of the second interface CC2 is pulled down by the second resistor R31. After the switching unit 51 receives the reduced external voltage, it can be known that the mobile solid-state hard disk is in a reverse insertion state. In the embodiment of the present invention, the process of the switching unit 51 and the first peripheral circuit 52 working in coordination is as follows: when the mobile solid-state hard disk is inserted, the first interface CC1 is connected, the second interface CC2 is suspended, the voltage at the second interface CC2 end is 0, and the voltage at the CC1 end is clamped at 0.417-0.85V through the pull-up resistor and R30 pull-down resistor provided by the host end. This level signal realizes the master-slave mode switching. The switching unit 51 is U1, the SEL end is pulled up by the fourth resistor R73, and the third resistor R1 and the second resistor R31 are pulled down in series. The voltage at the SEL end is 1.75V to 1.95V. At this time, the interface module 1 interacts with the control module 4 through the first channel, that is, the No. 3, No. 4, No. 7 and No. 8 pins of U1 are connected to the No. 19, No. 18, No. 17 and No. 16 pins respectively. When the mobile solid-state hard disk is reversely inserted, the second interface CC2 is connected, and the second interface CC2 is pulled up in parallel through the host-side pull-up resistor and the fourth resistor R73 plus the third resistor R1 (the fourth resistor R73 and the third resistor R1 are in series), and the second resistor R31 is pulled down, so that the voltage of the CC2 terminal is clamped to 0.417V-0.85V. This level signal realizes the master-slave mode switching, and the SEL terminal is pulled up by the fourth resistor R73 and the host-side pull-up resistor in series, and the third resistor R1 and the second resistor R31 are pulled down in series, and the voltage is clamped to 2.05V-2.2V. At this time, the interface module 1 interacts with the control module 4 through the second channel, that is, the No. 3, No. 4, No. 7 and No. 8 pins of U1 are connected to the No. 15, No. 14, No. 13 and No. 12 pins respectively. Therefore, the channel for the interaction between the interface module 1 and the control module 4 is switched by the change of the SEL terminal voltage. When the voltage at the SEL terminal is less than 2V, the first channel is used for interaction; when the voltage at the SEL terminal is ≥2V, the second channel is used for interaction. Therefore, the CC logic function is externally plugged in through the cooperation of the first peripheral circuit 52 and the switching unit 51. This circuit does not require the use of a dedicated Type-C management chip, but instead uses a channel switching chip, namely a DeMux Switch (shunt switch) or a Mux Switch (multiplexer switch), to implement the signal switching function required for Type-C double-sided plugging and unplugging, thereby significantly reducing the production cost of mobile solid-state hard drives while ensuring performance.

[0083] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A mobile solid-state hard disk circuit with external CC logic function, characterized in that: include: Interface module, used for data exchange between the mobile solid-state hard disk and peripheral devices; Flash memory module for reading and storing data; A power module, used to supply power to each module on the mobile solid-state hard disk circuit; A control module, used to control the operation of each module on the mobile solid-state hard disk circuit; A channel switching module, used to implement CC logic functions and to switch a designated channel, wherein the designated channel is used to implement communication between the interface module and the control module, wherein the channel switching module includes a switching unit and a first peripheral circuit, wherein a signal output end of the first peripheral circuit is connected to a signal input end of the switching unit, wherein the first peripheral circuit is used to identify whether the mobile solid-state hard disk is in a forward insertion state or a reverse insertion state, wherein the switching unit is used to switch the designated channel, and wherein the switching unit includes a DeMux Switch or a Mux Switch; The interface module is electrically connected to the channel switching module, the control module, the flash memory module and the power module in sequence; The first peripheral circuit includes a first resistor, a second resistor, a third resistor and a fourth resistor; The interface module includes a first interface, a second interface, a fifth resistor and a first power supply output terminal; The first interface is grounded through the first resistor; The first end of the second interface is grounded through the second resistor and the third resistor, the first power supply output end of the interface module is connected to the switching signal input end of the switching unit through the fifth resistor and the fourth resistor, wherein the second resistor is connected in series with the third resistor; The control module includes a clock module, a control chip and a second peripheral circuit, wherein the second peripheral circuit is used to supply power to the power module and the channel switching module; The interface module is electrically connected to the second peripheral circuit, and the second peripheral circuit is electrically connected to the channel switching module and the power supply module respectively; The control chip is electrically connected to the second peripheral circuit and the power module; The clock module is electrically connected to the control chip.

2. The mobile solid state hard disk circuit with external CC logic function according to claim 1, characterized in that: The second peripheral circuit includes a first buck unit and a second buck unit; The power supply module includes a first power supply unit and a second power supply unit; The first power supply output end of the first step-down unit is connected to the power supply input end of the first power supply unit, the first power supply output end of the first power supply unit is connected to the first power supply input end of the control chip, and the second power supply output end of the first power supply unit is connected to the first power supply input end of the flash memory module; The second power supply output end of the first step-down unit is connected to the power supply input end of the channel switching module; The first power supply output end of the second step-down unit is connected to the power supply input end of the second power supply unit, the first power supply output end of the second power supply unit is connected to the second power supply input end of the control chip, and the second power supply output end of the second power supply unit is connected to the third power supply input end of the control chip; The second power supply output terminal of the second voltage reduction unit is connected to the second power supply input terminal of the flash memory module.

3. The mobile solid state hard disk circuit with external CC logic function according to claim 1, characterized in that: The interface module, the switching unit, the control chip and the flash memory module are electrically connected in sequence.

4. The mobile solid state hard disk circuit with external CC logic function according to claim 2, characterized in that: The second peripheral circuit further includes a third step-down unit; The power supply input end of the third step-down unit is connected to the third power supply output end of the first step-down unit; The power supply output terminal of the third step-down unit is connected to the fourth power supply input terminal of the control chip.

5. The mobile solid state hard disk circuit with external CC logic function according to claim 1, characterized in that: The flash memory module also includes a flash memory chip matrix, wherein the flash memory chip matrix includes at least two flash memory chips, and each of the flash memory chips is electrically connected to the control module and the power module respectively.

6. The mobile solid state hard disk circuit with external CC logic function according to claim 1, characterized in that: Also includes LED modules; The LED modules are electrically connected to the power module and the control module respectively.

7. A mobile solid state hard disk, characterized in that: A mobile solid-state hard disk circuit comprising the external CC logic function as described in any one of claims 1 to 6.

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