CN108459981B - Multifunctional signal conversion circuit and converter - Google Patents
Multifunctional signal conversion circuit and converter Download PDFInfo
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- CN108459981B CN108459981B CN201810186288.4A CN201810186288A CN108459981B CN 108459981 B CN108459981 B CN 108459981B CN 201810186288 A CN201810186288 A CN 201810186288A CN 108459981 B CN108459981 B CN 108459981B
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- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/382—Information transfer, e.g. on bus using universal interface adapter
- G06F13/385—Information transfer, e.g. on bus using universal interface adapter for adaptation of a particular data processing system to different peripheral devices
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/40—Bus structure
- G06F13/4063—Device-to-bus coupling
- G06F13/4068—Electrical coupling
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2213/00—Indexing scheme relating to interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F2213/0042—Universal serial bus [USB]
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Abstract
The invention provides a multifunctional signal conversion circuit and a converter. The circuit comprises: a first TYPE-C module and a second TYPE-C module; the first TYPE-C module comprises a first terminal interface and a first TYPE-C interface, the first TYPE-C interface receives a power demand signal of the power demand device, and the supply terminal supplies power to the power demand device through the first TYPE-C module according to the power demand signal; the second TYPE-C module comprises a second terminal interface, a second TYPE-C interface, an HDMI, a USB interface, an SD interface and a TF card interface, and the supply terminal performs data transmission with the mobile device through the second TYPE-C module according to PID information, EDID information or CMD information of the mobile device. The multifunctional signal conversion circuit and the converter support the external expansion video and data read-write signal conversion of the double TYPE-C interfaces, are compatible with the single TYPE-C interface to realize the charging function, and simultaneously realize the data transmission of multiple TYPEs of data interfaces, so that the ever-increasing diversified demands of people are met.
Description
Technical Field
The invention belongs to the technical field of signal conversion, and particularly relates to a multifunctional signal conversion circuit and a converter.
Background
With the development of technology and the increasing diversified demands of people, the TYPE-C interface is widely applied to digital products such as smart phones, tablet computers and personal computer products. The thinner design, faster transmission speed and stronger power transmission of the TYPE-C interface allow USB (Universal Serial Bus ) interface and HDMI (High Definition Multimedia Interface, high definition multimedia interface) to have more uses.
At present, the TYPEs of expansion interfaces applied to digital products are more and more, but most of the expansion interfaces are a TYPE-C interface connected with a device, so that a function is realized, and the ever-increasing demands of people cannot be met.
Disclosure of Invention
In view of this, the embodiment of the invention provides a multifunctional signal conversion circuit and a converter, so as to solve the problem that a single TYPE-C interface can only be connected with one device and only realize one function in the prior art.
A first aspect of an embodiment of the present invention provides a multifunctional signal conversion circuit, including: a first TYPE-C module and a second TYPE-C module;
the first TYPE-C module comprises a first terminal interface and a first TYPE-C interface; the first terminal interface is suitable for being connected with a supply terminal, and the first TYPE-C interface is suitable for being connected with power demand equipment;
the first TYPE-C interface receives a power demand signal of the power demand device, and the supply terminal supplies power to the power demand device through the first TYPE-C module according to the power demand signal;
the second TYPE-C module comprises a second terminal interface, a second TYPE-C interface, an HDMI, a USB interface, an SD (Secure Digital Memory Card, secure digital card) interface and a TF (TransFlash, flash memory) card interface; the second terminal interface is suitable for being connected with the supply terminal, and the second TYPE-C interface, the HDMI, the USB interface, the SD interface and the TF card interface are all suitable for being connected with mobile equipment;
the second TYPE-C interface and the USB interface both receive PID (Process Identification Data ) information of the mobile device, the HDMI receives EDID (Extended Display Identification Data ) information of the mobile device, the SD interface and the TF card interface both receive CMD (Command) information of the mobile device, and the provisioning terminal performs data transmission with the mobile device through the second TYPE-C module according to the PID information, the EDID information, or the CMD information.
The first TYPE-C module further comprises: FPC (Flexible Printed Circuit, flexible circuit board) flat cable;
and the first terminal interface is connected with the first TYPE-C interface through the FPC flat cable.
Optionally, the second TYPE-C module further includes a control unit, a first signal conversion unit, and a second signal conversion unit;
the first signal end of the control unit is connected with the second terminal interface, the second signal end of the control unit is connected with the USB interface, the third signal end of the control unit is connected with the second TYPE-C interface, and the fourth signal end of the control unit is connected with the output end of the second signal conversion unit;
the signal end of the first signal conversion unit is connected with the HDMI, and the first output end of the first signal conversion unit is connected with the second terminal interface;
the first signal end of the second signal conversion unit is connected with the SD interface, and the second signal end of the second signal conversion unit is connected with the TF card interface.
Optionally, the control unit includes: a signal control subunit;
the output end of the signal control subunit is connected with the first signal end of the control unit, the first input end of the signal control subunit is connected with the second signal end of the control unit, the second input end of the signal control subunit is connected with the third signal end of the control unit, and the third input end of the signal control subunit is connected with the fourth signal end of the control unit.
Optionally, the control unit further includes: a first storage subunit;
the first storage subunit is connected with the storage end of the control unit.
Optionally, the second TYPE-C module further includes a third signal conversion unit and a communication protocol unit;
the first signal end of the third signal conversion unit is connected with the USB interface, the second signal end of the third signal conversion unit is connected with the fifth signal end of the control unit, and the third signal end of the third signal conversion unit is connected with the first communication end of the communication protocol unit;
the second communication end of the communication protocol unit is connected with the second output end of the first signal conversion unit, and the third communication end of the communication protocol unit is connected with the second terminal interface.
Optionally, the communication protocol unit includes: a communication protocol subunit;
the first input end of the communication protocol subunit is connected with the first communication end of the communication protocol unit, the second input end of the communication protocol subunit is connected with the second communication end of the communication protocol unit, and the output end of the communication protocol subunit is connected with the third communication end of the communication protocol unit.
Optionally, the communication protocol unit further includes: a reset subunit, a clock subunit and a second storage subunit;
the reset subunit is connected with a reset end of the communication protocol unit; the clock subunit is connected with the clock end of the communication protocol unit; the second storage subunit is connected with the storage end of the communication protocol unit.
Optionally, the second TYPE-C module further includes: a fourth signal conversion unit;
the input end of the fourth signal conversion unit is connected with the second TYPE-C interface, and the output end of the fourth signal conversion unit is connected with the third signal end of the control unit.
A second aspect of an embodiment of the present invention provides a signal converter comprising a housing and a functional board, further comprising a multifunctional signal conversion circuit according to any of the first aspects of the embodiments described above.
Compared with the prior art, the multifunctional signal conversion circuit and the converter have the beneficial effects that: the first TYPE-C interface of the first TYPE-C module receives a power demand signal of the power demand device, and the supply terminal connected with the first terminal interface of the first TYPE-C module supplies power to the power demand device through the first TYPE-C module according to the power demand signal; the second TYPE-C module receives the PID information of the mobile equipment through the second TYPE-C interface and the USB interface, receives the EDID information of the mobile equipment through the HDMI, receives the CMD information of the mobile equipment through the SD interface and the TF card interface, and transmits data with the mobile equipment through the second TYPE-C module according to the PID information, the EDID information or the CMD information of the mobile equipment, so that the conversion of the external expansion video and the data read-write signal of the double TYPE-C interfaces is realized, the charging function of the single TYPE-C interface is compatible, meanwhile, the data transmission of various TYPEs of data interfaces is realized, and the ever-increasing diversified demands of people are met.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of a multifunctional signal conversion circuit according to an embodiment of the present invention;
fig. 2 is a schematic circuit diagram of a control unit according to an embodiment of the present invention;
fig. 3 is a schematic circuit diagram of a first signal conversion unit according to an embodiment of the present invention;
fig. 4 is a schematic circuit diagram of a second signal conversion unit according to an embodiment of the present invention;
fig. 5 is a schematic circuit diagram of a third signal conversion unit according to an embodiment of the present invention;
fig. 6 is a schematic circuit diagram of a communication protocol unit according to an embodiment of the present invention;
fig. 7 is a schematic circuit diagram of a fourth signal conversion unit according to an embodiment of the present invention.
Detailed Description
In the following description, for purposes of explanation and not limitation, specific details are set forth such as the particular system architecture, techniques, etc., in order to provide a thorough understanding of the embodiments of the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.
In order to illustrate the technical scheme of the invention, the following description is made by specific examples.
Example 1
Referring to fig. 1, a multifunctional signal conversion circuit according to an embodiment of the present invention includes a first TYPE-C module 100 and a second TYPE-C module 200.
The first TYPE-C module 100 includes a first terminal interface and a first TYPE-C interface; the first terminal interface is adapted to be connected with a supply terminal and the first TYPE-C interface is adapted to be connected with a power demand device.
The first TYPE-C interface receives a power demand signal of the power demand device, and the supply terminal supplies power to the power demand device through the first TYPE-C module 100 according to the power demand signal.
The second TYPE-C module 200 includes a second terminal interface, a second TYPE-C interface, an HDMI, a USB interface, an SD interface, and a TF card interface; the second terminal interface is suitable for being connected with the supply terminal, and the second TYPE-C interface, the HDMI, the USB interface, the SD interface and the TF card interface are all suitable for being connected with mobile equipment.
The second TYPE-C interface and the USB interface both receive PID information of the mobile device, the HDMI receives EDID information of the mobile device, the SD interface and the TF card interface both receive CMD information of the mobile device, and the supply terminal performs data transmission with the mobile device through the second TYPE-C module 200 according to the PID information, the EDID information, or the CMD information.
The multifunctional signal conversion circuit receives the power demand signal of the power demand device through the first TYPE-C interface of the first TYPE-C module 100, and the supply terminal connected with the first terminal interface supplies power to the power demand device through the first TYPE-C module 100 according to the power demand signal; the second TYPE-C module 200 receives the PID information of the mobile device through the second TYPE-C interface and the USB interface, receives the EDID information through the HDMI, and receives the CMD information through the SD interface and the TF card interface, and the supply terminal performs data transmission with the mobile device according to the PID information, the EDID information or the CMD information of the mobile device through the second TYPE-C module 200, so that the conversion of the external expansion video and the data read-write signal of the double TYPE-C interface is realized, the charging function of the single TYPE-C interface is compatible, the data transmission of various TYPEs of data interfaces is realized, and the ever-increasing diversified demands of people are met.
The data of the data transmission between the provisioning terminal and the mobile device through the second TYPE-C module 200 may include data such as text data information, image data information, and video data information. It should be understood that the data TYPE of the data transmission between the provisioning terminal and the mobile device through the second TYPE-C module 200 is not limited to the above data information, but may also include instruction information, code information, and the like, for example, the mobile device is a keyboard, and the user sends a control instruction to the second TYPE-C module 200 through the keyboard, and the second TYPE-C module 200 sends the control instruction to the provisioning terminal, and the provisioning terminal performs an operation according to the control instruction.
The first terminal interface and the second terminal interface may be the same type of interface, or may be different types of interfaces. Optionally, the first terminal interface and the second terminal interface are the same TYPE-C interface capable of being connected to the supply terminal.
In a specific application, the provisioning terminal may include a tablet computer, a palm computer, a notebook computer, a mobile phone, or the like, but is not limited to the above terminal. The mobile device may include, but is not limited to, a tablet computer, a palm computer, a computer notebook, a mobile phone, a display, a charger bank, and other mobile devices.
Optionally, in one embodiment, the first TYPE-C module 100 further includes: FPC wiring.
And the first terminal interface is connected with the first TYPE-C interface through the FPC flat cable.
Specifically, when the first terminal interface is connected to the supply terminal and the first TYPE-C interface is connected to the power demand device, the supply terminal sends a power supply capability signal to the power demand device through the first TYPE-C module 100, and meanwhile, the first TYPE-C interface receives the power demand signal of the power demand device and sends the power demand signal to the supply terminal through the first TYPE-C module 100, and the supply terminal adjusts voltage and current according to the power demand signal and outputs voltage to the power demand device through the first TYPE-C module 100.
Optionally, the first TYPE-C interface may be further externally connected with other interfaces capable of transmitting video and data, for example, HDMI, VGA (Video Graphics Array ) interfaces, that is, the first TYPE-C interface may be used as a charging interface, and may also be used as a data and video transmission interface, so that a TYPE-C interface is realized to have multiple functions, thereby meeting user requirements.
In a specific application, when the first TYPE-C interface is connected to a mobile device to perform video and data transmission, a signal identification end of the first TYPE-C interface first identifies a data specification TYPE, for example, a universal serial bus 2.0 specification or a USB 3.1gen1 specification, sent by the mobile device to the first TYPE-C interface, and if the data signal is a data signal of the USB 3.1gen1 specification, the first TYPE-C interface enters a data mode above USB 3.0 to perform transmission. It should be understood that the foregoing is merely an example of the TYPE of data specification identified by the signal identifying end of the first TYPE-C interface, and is not a limitation of the TYPE of data specification identified by the signal identifying end of the first TYPE-C interface.
Further, in one embodiment, the second TYPE-C module 200 further includes a control unit 210, a first signal conversion unit 220, and a second signal conversion unit 230.
The first signal end of the control unit 210 is connected to the second terminal interface, the second signal end of the control unit 210 is connected to the USB interface, the third signal end of the control unit 210 is connected to the second TYPE-C interface, and the fourth signal end of the control unit 210 is connected to the output end of the second signal conversion unit 230.
The signal end of the first signal conversion unit 220 is connected to the HDMI, and the first output end of the first signal conversion unit 220 is connected to the second terminal interface.
The first signal end of the second signal conversion unit 230 is connected to the SD interface, and the second signal end of the second signal conversion unit 230 is connected to the TF card interface.
Optionally, the control unit 210 includes: a signal control subunit 211.
The output terminal of the signal control subunit 211 is connected to a first signal terminal of the control unit 210, the first input terminal of the signal control subunit 211 is connected to a second signal terminal of the control unit 210, the second input terminal of the signal control subunit 211 is connected to a third signal terminal of the control unit 210, and the third input terminal of the signal control subunit 211 is connected to a fourth signal terminal of the control unit 210.
Alternatively, referring to fig. 2, the signal control subunit 211 may be a VL817_qfn-76_hub chip.
The output terminal of the signal control subunit 211 may include: the VL817_QFN-76_hub chip comprises an SSTX0+ pin, an SSTX 0-pin, an SSRX0+ pin, an SSRX 0-pin, a USBDP+ pin and a USBDP-pin.
The first input terminal of the signal control subunit 211 may include: the VL817_QFN-76_hub chip comprises an SSTX2+ pin, an SSTX 2-pin, an SSRX2+ pin, an SSRX 2-pin, a USBHP2+ pin, a USBHP 2-pin, an SSTX3+ pin, an SSTX 3-pin, an SSRX3+ pin and an SSRX 3-pin.
A second input of the signal control subunit 211 may include: the VL817_QFN-76_hub chip comprises an SSTX4+ pin, an SSTX 4-pin, an SSRX4+ pin, an SSRX 4-pin, a USBHP4+ pin and a USBHP 4-pin.
The third input of the signal control subunit 211 may include: the VL817_QFN-76_hub chip comprises an SSTX1+ pin, an SSTX 1-pin, an SSRX1+ pin, an SSRX 1-pin, a USBHP1+ pin and a USBHP 1-pin.
The fourth input terminal of the signal control subunit 211 may include: the VL817_QFN-76_hub chip comprises a USBHP3+ pin and a USBHP 3-pin.
In a specific application, after the USB interface is connected to the mobile device, the signal control subunit 211 may detect whether a charging load or a data device is connected, and if the signal control subunit 211 detects a device capable of sending information or receiving information, it is determined that the mobile device connected to the USB interface is the data device or the data device including the charging load. When the signal control subunit 211 determines the function of the mobile device connected to the USB interface, the provisioning terminal performs high-speed data transmission with the mobile device connected to the USB interface according to the PID information.
It should be understood that, in the present embodiment, the VL817_qfn-76_hub chip is not limited to the signal control subunit 211, and the signal control subunit 211 may be another chip capable of implementing related functions.
Optionally, the control unit 210 further includes: a first storage subunit 212; the first storage subunit 212 is connected to a storage terminal of the control unit 210.
The storage terminal of the control unit 210 is connected to the storage terminal of the signal control subunit 211. Specifically, the memory terminals of the signal control subunit 211 may include a SPICS pin, a SPICK pin, and a SPISI pin of the VL817_qfn-76_hub chip.
Alternatively, the first storage subunit 212 may be a GD25D05 series chip. The first storage subunit 212 is configured to store signal data that the control unit 210 controls other units to communicate, that is, to send and receive serial data at the same time.
Optionally, the second TYPE-C module 200 includes at least two USB interfaces, and the USB interfaces may be connected to multiple USB interface TYPEs, such as, but not limited to, USB 1.0, USB 2.0, and USB 3.0.
Alternatively, referring to fig. 3, the first signal conversion unit 220 may be a PS176 chip.
The signal end of the first signal conversion unit 220 may include an HDMI0P pin, an HDMI0N pin, an HDMI1P pin, an HDMI1N pin, an HDMI2P pin, an HDMI2N pin, an HDMICKP pin, an HDMICKN pin, a ddc_scl pin, a ddc_sda pin, and an hdmi_hpd pin of the PS176 chip.
The first output terminal of the first signal conversion unit 220 may include a DRX0P pin, a DRX0N pin, a DRX1P pin, and a DRX1N pin of the PS176 chip.
The second output terminal of the first signal conversion unit 220 may include an AUXP pin, an AUXN pin, and a dp_hpd pin of the PS176 chip.
In a specific application, when the HDMI interface is connected to a mobile device, for example, a display, the HDMI interface detects a high level signal sent to the first signal conversion unit 220, the first signal conversion unit 220 receives the high level signal and then sends a receiving signal to the communication protocol unit 250, the communication protocol unit 250 feeds back the receiving signal to the second terminal interface again, and at the same time, the display transmits EDID information to a supply terminal connected to the second terminal interface through the first signal conversion unit 220 and the communication protocol unit 250, and the supply terminal outputs a display signal according to the EDID information and converts the display signal into an HDMI signal through the first signal conversion unit 220 and outputs the HDMI signal to the display.
It should be understood that, in the present embodiment, the PS176 chip is not limited to the first signal conversion unit 220, and the first signal conversion unit 220 may be other chips that can implement related functions.
Alternatively, referring to fig. 4, the second signal conversion unit 230 may be an AU84612 chip.
The first signal terminal of the second signal conversion unit 230 may include an SD0DATA0 pin, an SD0DATA1 pin, an SD0DATA2 pin, an SD0DATA3 pin, an SD0CMD pin, an SD0CLK pin, an SD0CDN pin, and an SD0WP pin of the AU84612 chip.
The second signal terminal of the second signal conversion unit 230 may include uSD CMD/M2DATA3 pin, uSD DATA0/M2DATA2 pin, uSD DATA1/M2DATA0 pin, SD1CDN pin, uSD1CLK pin, uSD DATA2/M2BS pin, and uSD1DATA3/M2CLK pin of the AU84612 chip.
The output terminal of the second signal conversion unit 230 may include an SSTXM pin, an SSTXP pin, an SSRXM pin, an SSRXP pin, a DP pin, and a DM pin of the AU84612 chip.
In a specific application, when an SD or TF card is inserted, the SD or TF card sends CMD information to the second signal conversion unit 230, after the second signal conversion unit 230 detects that a card is inserted, a clock signal of a power supply singlechip of the SD or TF card is consistent with a clock signal of the second signal conversion unit 230, and after a communication protocol between the second signal conversion unit 230 and the SD or TF card is agreed, the second signal conversion unit 230 sends CMD information to a supply terminal connected to a second terminal interface through the control unit 210, and the supply terminal transmits data or video information to the SD or TF card according to the CMD information, thereby implementing a data exchange function.
It should be understood that the AU84612 chip is not limited to the second signal converting unit 230 in this embodiment, and the second signal converting unit 230 may be other chips that can implement related functions.
Alternatively, the SD interface may be another interface that implements related functions, such as an MMC (multimedia Card) interface.
Referring to fig. 1, the second TYPE-C module 200 further includes a third signal conversion unit 240 and a communication protocol unit 250.
The first signal end of the third signal conversion unit 240 is connected to the USB interface, the second signal end of the third signal conversion unit 240 is connected to the fifth signal end of the control unit 210, and the third signal end of the third signal conversion unit 240 is connected to the first communication end of the communication protocol unit 250.
A second communication terminal of the communication protocol unit 250 is connected to the second output terminal of the first signal conversion unit 220, and a third communication terminal of the communication protocol unit 250 is connected to the second terminal interface.
Alternatively, referring to fig. 5, the third signal conversion unit 240 may be an FE8.1 chip.
The first signal terminal of the third signal conversion unit 240 may include a DM3 pin and a DP3 pin of the FE8.1 chip.
The second signal terminal of the third signal conversion unit 240 may include a DMU pin and a REXT pin of the FE8.1 chip.
The third signal terminal of the third signal conversion unit 240 may include a DM2 pin and a DP2 pin of the FE8.1 chip.
Optionally, the communication protocol unit 250 includes: communication protocol subunit 251.
A first input terminal of the communication protocol subunit 251 is connected to a first communication terminal of the communication protocol unit 250, a second input terminal of the communication protocol subunit 251 is connected to a second communication terminal of the communication protocol unit 250, and an output terminal of the communication protocol subunit 251 is connected to a third communication terminal of the communication protocol unit 250.
Alternatively, referring to fig. 6, the communication protocol subunit 251 may be a VL103 chip.
The first input terminal of the communication protocol subunit 251 may include: dm_u pin and dp_u pin of VL103 chip.
The second input terminal of the communication protocol subunit 251 may include: AUX+ pin, AUX-pin and HPD pin of VL103 chip.
The output terminal of the communication protocol subunit 251 may include: SBU1 pin, SBU2 pin, CC1 pin and CC2 pin of VL103 chip.
The RESET terminal of the communication protocol unit 250 is connected to the RESET terminal of the communication protocol subunit 251, and the RESET terminal of the communication protocol subunit 251 includes the reset_pin of the VL103 chip.
The clock end of the communication protocol unit 250 is connected with the clock end of the communication protocol subunit 251, and the clock end of the communication protocol subunit 251 includes an oscro pin and an oscro pin of the VL103 chip.
The storage end of the communication protocol unit 250 is connected with the storage end of the communication protocol subunit 251, and the storage end of the communication protocol subunit 251 includes an spi_cs_pin, an spi_q pin, an spi_d pin, an spi_clk pin and a GPIO3 pin of the VL103 chip.
Illustratively, the DM_U pin of the VL103 chip is connected to the DM2 pin of the FE8.1 chip, and the DP_U pin of the VL103 chip is connected to the DP2 pin of the FE8.1 chip.
The AUX+ pin of the VL103 chip is connected with the AUXP pin of the PS176 chip, the AUX-pin of the VL103 chip is connected with the AUXN pin of the PS176 chip, and the HPD pin of the VL103 chip is connected with the DP_HPD pin of the PS176 chip.
In a specific application, the communication protocol subunit 251 is configured to communicate with a mobile device connected to the USB interface and a provisioning terminal connected to the second terminal interface. When the USB interface is connected to the power supply demand device or the charger, the USB interface sends a charging demand signal sent by the power supply demand device or the charger to the communication protocol subunit 251 through the third signal conversion unit 240; the communication protocol subunit 251 supports the power supply requirement equipment or the charger to communicate with the supply terminal connected with the second terminal interface, that is, the communication protocol subunit 251 sends the charging requirement signal to the supply terminal connected with the second terminal interface, and the supply terminal performs power transmission with the power supply requirement equipment or the charger through the communication protocol subunit 251 and the third signal conversion unit 240 according to the charging requirement signal. The communication protocol unit 250 further includes a built-in switch, so that the communication protocol subunit 251 supports a cable flipping function of the USB interface, that is, the mobile device connected to the USB interface may log in directly and connect to the supply terminal of the second terminal interface through the third signal conversion unit 240 and the communication protocol subunit 251.
It should be understood that, in this embodiment, the VL103 chip is not limited to the communication protocol subunit 251, and the communication protocol subunit 251 may also be other chips capable of implementing related functions.
Optionally, the communication protocol unit 250 further includes: a reset subunit 252, a clock subunit 253, and a second storage subunit 254.
The reset subunit 252 is connected to the reset end of the communication protocol unit 250; the clock subunit 253 is connected with a clock end of the communication protocol unit 250; the second storage subunit 254 is connected to a storage terminal of the communication protocol unit 250.
Referring to fig. 6, the reset subunit 252 includes: a first resistor R20, a second resistor R22 and a first capacitor C29. When the multi-function signal conversion circuit is powered up, reset subunit 252 restores the circuit to a starting state.
The first end of the first resistor R20 is connected to the RESET end (RESET pin of the VL103 chip) of the communication protocol subunit 251, the first end of the first resistor R20 is further connected to the positive electrode of the first capacitor C29, the first end of the first resistor R20 is further connected to the first end of the second resistor R22, and the second end of the first resistor R20 is connected to an external power source.
The negative electrode of the first capacitor C29 and the second end of the second resistor R22 are grounded.
Alternatively, referring to fig. 6, the clock subunit 253 includes a quartz crystal oscillator X1, a second capacitor C27, and a third capacitor C30. The clock subunit 253 is configured to mutually convert electrical energy and mechanical energy in a state that the crystal is at resonance, i.e. to provide a stable and accurate single-frequency oscillation frequency, which can be as high as 24MHZ.
The first end of the quartz crystal oscillator X1 is connected with the clock end (OSCXI pin of the VL103 chip) of the communication protocol subunit 251, and the first end of the quartz crystal oscillator X1 is grounded through a third capacitor C30; the second end of the quartz crystal oscillator X1 is grounded, the third end of the quartz crystal oscillator X1 is connected with the clock end (oscro pin of the VL103 chip) of the communication protocol subunit 251, the third end of the quartz crystal oscillator X1 is also grounded through the second capacitor C27, and the fourth end of the quartz crystal oscillator X1 is grounded.
Alternatively, referring to fig. 6, the second memory subunit 254 may include a T25S40 chip, a third resistor R21, and a fourth capacitor C28. The second memory subunit 254 is a clock synchronous serial communication memory for simultaneously transmitting and receiving serial data.
Illustratively, the cs# pin of the T25S40 chip is connected to the spi_cs_pin of the VL103 chip, the SO pin of the T25S40 chip is connected to the spi_q pin of the VL103 chip, the SI pin of the T25S40 chip is connected to the spi_d pin of the VL103 chip, the SCLK pin of the T25S40 chip is connected to the spi_clk pin of the VL103 chip, the wp# pin of the T25S40 chip is connected to the GPIO3 pin of the VL103 chip, and the hold# pin of the T25S40 chip is grounded through the third resistor R21 and the fourth capacitor C28.
Optionally, the second TYPE-C module 200 further includes: and a fourth signal conversion unit 260.
An input end of the fourth signal conversion unit 260 is connected to the second TYPE-C interface, and an output end of the fourth signal conversion unit 260 is connected to the third signal end of the control unit 210.
Alternatively, referring to fig. 7, the fourth signal conversion unit 260 may be a VL160 chip.
Illustratively, the RX_P pin of the VL160 chip is connected to the SSRX4+ pin of the VL817_QFN-76_hub chip, the RX_N pin of the VL160 chip is connected to the SSRX 4-pin of the VL817_QFN-76_hub chip, the TX_P pin of the VL160 chip is connected to the SSTX4+ pin of the VL817_QFN-76_hub chip, and the TX_N pin of the VL160 chip is connected to the SSTX 4-pin of the VL817_QFN-76_hub chip.
The TX1_p pin, the TX1_n pin, the TX2_p pin, the TX2_n pin, the RX1_p pin, the RX1_n pin, the RX2_p pin, and the RX2_n pin of the VL160 chip are used as input terminals of the fourth signal conversion unit 260 to interface with the second TYPE-C.
And a signal identification end of the second TYPE-C interface is connected with a USBHP4+ pin and a USBHP 4-pin of the VL817_QFN-76_hub chip.
In a specific application, after the second TYPE-C interface is connected to the mobile device, the PID information of the mobile device is received, and the PID information is sent to a supply terminal connected to the second terminal interface through the fourth signal conversion unit 260 and the control unit 220, where the supply terminal performs data or video information transmission according to the PID information and the mobile device connected to the second TYPE-C interface.
It should be understood that, in the present embodiment, the VL160 chip is not limited to the fourth signal conversion unit 260, and the fourth signal conversion unit 260 may be other chips that can implement related functions.
In this embodiment, the first TYPE-C interface of the first TYPE-C module 100 receives the power demand signal of the power demand device, and the supply terminal connected to the first terminal interface of the first TYPE-C module 100 supplies power to the power demand device through the first TYPE-C module 100 according to the power demand signal; the second TYPE-C module 200 receives the PID information of the mobile device through the second TYPE-C interface and the USB interface, receives the EDID information of the mobile device through the HDMI, receives the CMD information of the mobile device through the SD interface and the TF card interface, and the supply terminal performs data transmission with the mobile device through the second TYPE-C module 200 according to the PID information, the EDID information or the CMD information of the mobile device, so that the external expansion video and the data read-write signal conversion of the double TYPE-C interface are realized, the charging function of the single TYPE-C interface is compatible, meanwhile, the data transmission of various TYPEs of data interfaces is realized, and the ever-increasing diversified demands of people are met.
Example two
The embodiment provides a signal converter, which comprises a shell, a functional board, any one of the multifunctional signal conversion circuits described in the first embodiment, and the signal converter has the beneficial effects of the multifunctional signal conversion circuit.
It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-described division of the functional units and modules is illustrated, and in practical application, the above-described functional distribution may be performed by different functional units and modules according to needs, i.e. the internal structure of the apparatus is divided into different functional units or modules to perform all or part of the above-described functions. The functional units and modules in the embodiment may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit, where the integrated units may be implemented in a form of hardware or a form of a software functional unit. In addition, specific names of the functional units and modules are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present application. The specific working process of the units and modules in the above system may refer to the corresponding process in the foregoing method embodiment, which is not described herein again.
In the foregoing embodiments, the descriptions of the embodiments are emphasized, and in part, not described or illustrated in any particular embodiment, reference is made to the related descriptions of other embodiments.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
In the embodiments provided in the present invention, it should be understood that the disclosed apparatus may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the modules or units is merely a logical functional division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection via interfaces, devices or units, which may be in electrical, mechanical or other forms.
The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in the embodiments of the present invention may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.
The above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention, and are intended to be included in the scope of the present invention.
Claims (8)
1. A multi-functional signal conversion circuit, comprising: a first TYPE-C module and a second TYPE-C module;
the first TYPE-C module comprises a first terminal interface and a first TYPE-C interface; the first terminal interface is suitable for being connected with a supply terminal, and the first TYPE-C interface is suitable for being connected with power demand equipment;
the first TYPE-C interface receives a power demand signal of the power demand device, and the supply terminal supplies power to the power demand device through the first TYPE-C module according to the power demand signal;
the second TYPE-C module comprises a second terminal interface, a second TYPE-C interface, a high-definition multimedia interface HDMI, a universal serial bus USB interface, a secure digital card SD interface and a flash memory TF card interface; the second terminal interface is suitable for being connected with the supply terminal, and the second TYPE-C interface, the HDMI, the USB interface, the SD interface and the TF card interface are all suitable for being connected with mobile equipment;
the second TYPE-C interface and the USB interface both receive process identification data PID information of the mobile equipment, the HDMI receives extended display identification data EDID information of the mobile equipment, the SD interface and the TF card interface both receive command CMD information of the mobile equipment, and the supply terminal performs data transmission with the mobile equipment through the second TYPE-C module according to the PID information, the EDID information or the CMD information;
the first TYPE-C module further comprises: flexible circuit board FPC winding displacement;
the first terminal interface is connected with the first TYPE-C interface through the FPC flat cable;
the second TYPE-C module further comprises a control unit, a first signal conversion unit and a second signal conversion unit;
the first signal end of the control unit is connected with the second terminal interface, the second signal end of the control unit is connected with the USB interface, the third signal end of the control unit is connected with the second TYPE-C interface, and the fourth signal end of the control unit is connected with the output end of the second signal conversion unit;
the signal end of the first signal conversion unit is connected with the HDMI, and the first output end of the first signal conversion unit is connected with the second terminal interface;
the first signal end of the second signal conversion unit is connected with the SD interface, and the second signal end of the second signal conversion unit is connected with the TF card interface.
2. The multi-function signal conversion circuit of claim 1, wherein the control unit comprises: a signal control subunit;
the output end of the signal control subunit is connected with the first signal end of the control unit, the first input end of the signal control subunit is connected with the second signal end of the control unit, the second input end of the signal control subunit is connected with the third signal end of the control unit, and the third input end of the signal control subunit is connected with the fourth signal end of the control unit.
3. The multi-function signal conversion circuit of claim 1, wherein the control unit further comprises: a first storage subunit;
the first storage subunit is connected with the storage end of the control unit.
4. The multi-function signal converting circuit according to claim 1, wherein the second TYPE-C module further comprises a third signal converting unit and a communication protocol unit;
the first signal end of the third signal conversion unit is connected with the USB interface, the second signal end of the third signal conversion unit is connected with the fifth signal end of the control unit, and the third signal end of the third signal conversion unit is connected with the first communication end of the communication protocol unit;
the second communication end of the communication protocol unit is connected with the second output end of the first signal conversion unit, and the third communication end of the communication protocol unit is connected with the second terminal interface.
5. The multi-function signal conversion circuit of claim 4, wherein the communication protocol unit comprises: a communication protocol subunit;
the first input end of the communication protocol subunit is connected with the first communication end of the communication protocol unit, the second input end of the communication protocol subunit is connected with the second communication end of the communication protocol unit, and the output end of the communication protocol subunit is connected with the third communication end of the communication protocol unit.
6. The multi-function signal conversion circuit of claim 4, wherein the communication protocol unit further comprises: a reset subunit, a clock subunit and a second storage subunit;
the reset subunit is connected with a reset end of the communication protocol unit; the clock subunit is connected with the clock end of the communication protocol unit; the second storage subunit is connected with the storage end of the communication protocol unit.
7. The multi-function signal conversion circuit of claim 1, wherein the second TYPE-C module further comprises: a fourth signal conversion unit;
the input end of the fourth signal conversion unit is connected with the second TYPE-C interface, and the output end of the fourth signal conversion unit is connected with the third signal end of the control unit.
8. A signal converter comprising a housing and a functional board, further comprising a multifunctional signal conversion circuit according to any one of claims 1 to 7 connected to the functional board.
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| CN110139054B (en) * | 2019-05-23 | 2024-04-12 | 深圳市显盈科技股份有限公司 | Conversion circuit of multifunctional data interface and multifunctional data communication system |
| CN110413552B (en) * | 2019-08-22 | 2021-03-26 | 深圳市新龙鹏科技有限公司 | Blind-plugging identification method, device, equipment and storage medium for double TypeC interfaces |
| CN111787425A (en) * | 2020-07-10 | 2020-10-16 | 华立科技股份有限公司 | Interface wireless linker |
| CN118117405B (en) * | 2024-04-28 | 2024-07-09 | 崂山国家实验室 | TF card-to-Type-C device and method |
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| CN104008079A (en) * | 2014-05-29 | 2014-08-27 | 广州视源电子科技股份有限公司 | Data read-write circuit capable of being simultaneously inserted into SD card and TF card |
| CN206712927U (en) * | 2017-04-06 | 2017-12-05 | 深圳市显盈科技股份有限公司 | A kind of signal adapter |
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| TWI440571B (en) * | 2009-12-04 | 2014-06-11 | Kwang Yang Motor Co | Communication interface conversion device |
| CN102929824B (en) * | 2012-10-15 | 2016-01-06 | 天地融科技股份有限公司 | A kind of system of multiplexing USB interface transmission data |
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| CN104008079A (en) * | 2014-05-29 | 2014-08-27 | 广州视源电子科技股份有限公司 | Data read-write circuit capable of being simultaneously inserted into SD card and TF card |
| CN206712927U (en) * | 2017-04-06 | 2017-12-05 | 深圳市显盈科技股份有限公司 | A kind of signal adapter |
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