CN107436853B - Control method of USB Type-C/PD connector - Google Patents
Control method of USB Type-C/PD connector Download PDFInfo
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- CN107436853B CN107436853B CN201610360531.0A CN201610360531A CN107436853B CN 107436853 B CN107436853 B CN 107436853B CN 201610360531 A CN201610360531 A CN 201610360531A CN 107436853 B CN107436853 B CN 107436853B
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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
- G06F13/4004—Coupling between buses
- G06F13/4022—Coupling between buses using switching circuits, e.g. switching matrix, connection or expansion network
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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
A method of controlling a USB Type-C/PD connector, the USB Type-C/PD connector comprising: the device comprises at least two USB ports, a multi-channel analog switch connected with each USB port and a USB Type-C/PD controller connected with the multi-channel analog switch; the control method comprises the following steps: and controlling the multi-path analog switch to switch in a time-sharing manner according to a preset mode, so that only one USB port is connected with the USB Type-C/PD controller in a certain time period, and the USB Type-C/PD controller is communicated with the group of USB ports in a time-sharing manner. Thereby providing a USB Type-C/PD connector control method that reduces the cost of the USB Type-C/PD connector.
Description
Technical Field
The invention relates to a control method of a USB Type-C/PD connector.
Background
At present, the USB Type-C/PD connector not only overcomes the problem that the traditional USB connector cannot be inserted positively or reversely at the same time, but also can provide the data transmission speed of 10 Gbps. However, each USB port of the USB Type-C/PD connector requires one USB Type-C/PD controller to process data of the corresponding port, and thus, when there are a plurality of USB ports of the USB Type-C/PD connector, a plurality of USB Type-C/PD controllers need to be provided. Thus, unnecessary costs are incurred.
Disclosure of Invention
In view of the above, it is necessary to provide a control method of a USB Type-C/PD connector that can reduce the cost of the USB Type-C/PD connector.
The invention provides a control method of a USB Type-C/PD connector, which comprises the following steps: the device comprises at least two USB ports, a multi-channel analog switch connected with each USB port and a USB Type-C/PD controller connected with the multi-channel analog switch; the control method comprises the following steps:
and controlling the multi-path analog switch to switch in a time-sharing manner according to a preset mode, so that only one USB port is connected with the USB Type-C/PD controller in a certain time period, and the USB Type-C/PD controller is communicated with the group of USB ports in a time-sharing manner.
Preferably, the multi-path analog switch is switched to a certain USB port, so that the certain USB port is connected with the USBType-C/PD controller; and controlling the multi-path analog switch to conduct the connection between the certain USB port and the USB Type-C/PD controller for a preset time.
Preferably, when the certain USB port is connected to an external device, the multi-channel analog switch is controlled to conduct the connection between the certain USB port and the USB Type-C/PD controller for a first predetermined time.
Preferably, when the certain USB port is not connected to the external device, the multi-channel analog switch is controlled to conduct the connection between the certain USB port and the USB Type-C/PD controller for a second predetermined time.
Preferably, the second predetermined time is less than the first predetermined time.
Preferably, the second predetermined time is equal to the first predetermined time.
Preferably, the power request signals of the external device connected to the at least two USB ports, which are transmitted from the USB Type-C/PD controller, are received, and a power module is controlled to provide power to the at least two USB ports according to each power request signal.
Preferably, the power request signal is a voltage request signal or a current request signal.
Preferably, the power request signal of the external device connected to the at least two USB ports, which is transmitted from the USB Type-C/PD controller, is received, a configuration power is determined according to a preset rule, and the power module is controlled to provide power to the at least two USB ports according to the determined configuration power.
Preferably, the preset rule is as follows: when at least two of the power request signals are the same, the same power request signal is used as configuration power. Preferably, the preset rule is as follows: when at least two of the power request signals are the same, the same power request signal is used as configuration power.
According to the invention, only one USB port in a group of USB ports is connected with one USB Type-C/PD controller in a certain time period by controlling the time-sharing switching of a multi-channel analog switch, so that the USB Type-C/PD controller is in time-sharing communication with external equipment connected with the USB ports, and thus, only one USB Type-C/PD controller is needed no matter how many USB ports are available, and the control method of the USB Type-C/PD connector with reduced cost is provided.
Drawings
FIG. 1 is a schematic block diagram of a USB Type-C/PD connector according to an embodiment of the present invention.
FIG. 2 is a circuit block diagram of the USB Type-C/PD connector shown in FIG. 1.
Fig. 3 is a control flowchart of the MCU unit according to an embodiment of the present invention.
Description of the main elements
| USB Type-C/PD connector | 1 |
| | 10 |
| Multi-way analog switch | 20 |
| USB Type-C/ | 30 |
| | 40 |
| | 2 |
| | 3 |
| One-out-of-four | 21 |
| | 41 |
The following detailed description will further illustrate the invention in conjunction with the above-described figures.
Detailed Description
The technical solution and other advantages of the present invention will become apparent from the following detailed description of specific embodiments of the present invention, which is to be read in connection with the accompanying drawings. It is to be understood that the drawings are provided solely for the purposes of reference and illustration and are not intended as a definition of the limits of the invention. The dimensions shown in the figures are for clarity of description only and are not to be taken in a limiting sense.
Referring to fig. 1, a schematic block diagram of a USB Type-C/PD connector 1 according to an embodiment of the present invention is shown. The USB Type-C/PD connector 1 includes a set of USB ports 10, a multi-way analog switch 20, a USB Type-C/PD controller 30, and a main control unit 40. The set of USB ports 10 includes at least two USB ports.
The multi-channel analog switch 20 is connected to the at least two USB ports, and is configured to select one USB port from the at least two USB ports to connect to the USB Type-C/PD controller 30, and disconnect from other USB ports.
The USB Type-C/PD controller 30 is connected between the multi-way analog switch 20 and the main control unit 40. The USB Type-C/PD controller 30 supports USB Type-C/PD. The USB Type-C/PD controller 30 detects whether the USB port is connected to an external device 2 through the multi-way analog switch 20. In this embodiment, the external device 2 is a mobile phone, a tablet computer, a mobile power supply, or a mobile hard disk. The USB Type-C/PD controller 30 further receives a power request signal of the external device 2 connected to the USB port from the USB port through the multi-path analog switch 20 when the USB port is connected to the external device 2. The USB Type-C/PD controller also transmits a power request signal of the external device 2 to the main control unit 40. In this embodiment, the power request signal is a voltage request signal or a current request signal. Thus, after the USB Type-C/PD controller is sequentially connected to all USB ports, the USB Type-C/PD controller sequentially transmits the power request signal of the external device 2 connected to each USB port to the main control unit 40.
The main control unit 40 is connected to the multi-path analog switch 20 and the USB Type-C/PD controller 30. The main control unit 40 controls the multi-channel analog switch 20 to switch in a time-sharing manner according to a predetermined manner, so that only one USB port is connected to the USB Type-C/PD controller 30 in a certain time period, thereby implementing time-sharing multiplexing of the at least two USB ports, and allowing the USB Type-C/PD controller 30 to communicate with the at least two USB ports in a time-sharing manner, so that the USB Type-C/PD controller 30 can communicate with the external device 2 in a time-sharing manner through the at least two USB ports.
The main control unit 40 is also connected to a power module 3. The main control unit 40 also controls the power module 3 to charge the external device 2 through the USB port connected to the external device according to the power request signal of each external device 2.
Referring to fig. 2, a circuit block diagram of the USB Type-C/PD connector 1 according to an embodiment of the invention is shown. In this embodiment, the set of USB ports 10 includes four USB ports, which are USB port 1, USB port 2, USB port 3, and USB port 4. The four USB ports 1-4 are connected in parallel. In this embodiment, the anodes of the four USB ports 1-4 are connected to each other, and the cathodes of the four USB ports are connected to each other. The positive electrodes and the negative electrodes of the four USB ports 1-4 are connected with the power supply module 3.
The multi-channel analog switch 20 is connected to the USB port 1, the USB port 2, the USB port 3, and the USB port 4. In the present embodiment, the multi-way analog switch 20 is a one-out-of-four analog switch 21. Specifically, in the present embodiment, the one-out-of-four analog switch 21 is an SGM4782 chip. Obviously, in other embodiments, the one-out-of-four analog switch 21 may also be another type of chip.
The USB Type-C/PD controller 30 includes a D + terminal and a D-terminal. The D + terminal and the D-terminal are data communication ports of the USBType-C/PD controller 30. The D + terminal and the D-terminal of the USB Type-C/PD controller 30 are connected to each USB port through the one-out-of-four analog switch 21. The USB Type-C/PD controller 30 further includes a CC terminal. The CC end of the USBType-C/PD controller 30 is a configuration channel of the USB Type-C/PD controller 30. The CC terminal of the USB Type-C/PD controller 30 is connected to the one-of-four analog switch 21. The USB Type-C/PD controller 30 detects whether the USB port connected to the USB Type-C/PD controller 30 is connected to the external device 2 through the CC terminal. In this embodiment, the USB Type-C/PD controller 30 further determines, through the CC terminal, a power request signal of the external device 2 connected to the USB port connected to the USB Type-C/PD controller, and transmits the power request signal of the external device 2 to the main control unit 40. For example, when the USB Type-C/PD controller is sequentially connected to the USB port 1, the USB port 2, the USB port 3 and the USB port 4, and the power request signals received from the four external devices 2 connected to the USB ports 1-4 are respectively 5 volts, 55 volts and 6 volts, the USB Type-C/PD controller 30 sequentially transmits the power requirements of the four external devices 2 to the main control unit 40 at 5 volts, 5 volts and 6 volts.
In this embodiment, the main control unit 40 includes an MCU unit 41. The MCU unit 41 is connected to the USB Type-C/PD controller 30, the one-of-four analog switch 21, and the power module 3. The MCU unit 41 controls the one-of-four analog switch 21 to switch in a time-sharing manner, so that only one USB port is connected to the D + terminal, the D-terminal, and the CC terminal of the USB Type-C/PD controller 30 within a certain time period. Thus, the USB Type-C/PD controller 30 communicates with the external device 2 in a time-sharing manner through the D + terminal and the D-terminal. Meanwhile, the MCU unit 41 receives the power request signal of each external device 2 transmitted by the USB Type-C/PD controller 30, determines configuration power according to a preset rule, and controls the power module 3 to charge each external device 2 according to the configuration power. In this embodiment, the preset rule is: when a plurality of same power request signals are the same, the same power request signals are used for configuring power. For example, when the power request signal transmitted by the USB Type-C/PD controller 30 is 5 volts, and 6 volts, the MCU unit 41 controls the power module 3 to provide configuration power of 5 volts to the four external devices 2. In other embodiments, the preset rule is: the power is configured by a power request signal having a magnitude intermediate to the magnitude of the plurality of power request signals. For example, when the power request signal transmitted by the USB Type-C/PD controller 30 is 5 volts, 6 volts, or 8 volts, the MCU unit 41 controls the power module 3 to provide the configuration power of 6 volts to the three external devices 2. Obviously, the preset rule may also be other rules, which are not described in detail herein.
Please refer to fig. 3, which is a control flowchart of the MCU unit 41 according to an embodiment of the present invention. In this embodiment, the execution order of the steps in the flowchart shown in fig. 3 may be changed and some steps may be omitted according to different requirements.
In step S301, the MCU unit 41 switches the one-of-four analog switch 21 to the USB port 1, so that the USB port 1 is connected to the D + terminal, the D-terminal, and the CC terminal of the USB Type-C/PD controller 30.
In step S302, the MCU unit 41 receives a power request signal of the external device 2 connected to the USB port 1.
In step S303, the MCU unit 41 controls the one-of-four analog switch 21 to turn on the connection between the USB port 1 and the USB Type-C/PD controller 30 for a predetermined time.
In step S304, the MCU unit 41 switches the one-of-four analog switch 21 to the USB port 2, so that the USB port 2 is connected to the D + terminal, the D-terminal and the CC terminal of the USB Type-C/PD controller 30.
In step S305, the MCU unit 41 receives a power request signal of the external device 2 connected to the USB port 2.
In step S306, the MCU unit 41 controls the one-of-four analog switch 21 to turn on the connection between the USB port 2 and the USB Type-C/PD controller 30 for a predetermined time.
In step S307, the MCU unit 41 switches the one-of-four analog switch 21 to the USB port 3, so that the USB port 3 is connected to the D + terminal, the D-terminal and the CC terminal of the USB Type-C/PD controller 30.
In step S308, the MCU unit 41 receives a power request signal of the external device 2 connected to the USB port 3.
In step S309, the MCU unit 41 controls the one-of-four analog switch 21 to turn on the connection between the USB port 3 and the USB Type-C/PD controller 30 for a predetermined time.
In step S310, the MCU unit 41 switches the one-of-four analog switch 21 to the USB port 4, so that the USB port 4 is connected to the D + terminal, the D-terminal and the CC terminal of the USB Type-C/PD controller 30.
In step S311, the MCU unit 41 receives a power request signal of the external device 2 connected to the USB port 4.
In step S312, the MCU unit 41 controls the one-of-four analog switch 21 to turn on the connection between the USB port 4 and the USB Type-C/PD controller 30 for a predetermined time.
In step S313, the MCU unit 41 determines configuration power according to the power request signal of each external device 2, and controls the power module 3 to charge the external devices 2 connected to the USB ports 1 to 4 according to the configuration power.
After step S313 is completed, step S301 is executed.
Therefore, the MCU unit 41 controls the multi-channel analog switch 20 to switch in a time-sharing manner according to a predetermined manner, so that only one USB port is connected to the D + terminal, the D-terminal, and the CC terminal of the USB Type-C/PD controller 30 within a certain time period. In this embodiment, the predetermined manner is to circularly and sequentially connect the USB port 1, the USB port 2, the USB port 3, and the USB port 4 to the D + terminal, the D-terminal, and the CC terminal of the USB Type-C/PD controller 30. In other embodiments, the predetermined manner may be to circularly and sequentially connect the USB port 2, the USB port 3, the USB port 4 and the USB port 1 to the D + terminal, the D-terminal and the CC terminal of the USB Type-C/PD controller 30.
Obviously, if a certain USB port is not connected to the external device 2, the step of the MCU unit 41 receiving the power request signal of the external device 2 corresponding to the certain USB port may be omitted. If the external device 2 is not connected to the USB port 2, step S305 may be omitted.
When the MCU unit 41 switches the multiple analog switches 20 to the USB port n, and the USB Type-C/PD controller 30 detects that the USB port n is connected to the external device 2, the MCU unit 41 controls the four-select analog switch 21 to connect the USB port n to the USB Type-C/PD controller 30 for a first predetermined time, so that the USB Type-C/PD controller 30 communicates with the external device 2 connected to the USB port 1 within the first predetermined time. When the MCU unit 41 switches the multi-path analog switch 20 to the USB port n, and when the USB Type-C/PD controller 30 detects that the USB port n is not connected to the external device 2, the MCU unit 41 controls the one-of-four analog switch 21 to connect the USB port n to the USB Type-C/PD controller 30 for a second predetermined time. In this embodiment, the second predetermined time is equal to the first predetermined time. In other embodiments, the second predetermined time is less than the first predetermined time, so that the USB Type-C/PD controller 30 has more time to communicate with the external device 2. The USB port n may be a USB port 1, a USB port 2, a USB port 3, or a USB port 4.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A method of controlling a USB Type-C/PD connector, the USB Type-C/PD connector comprising: the device comprises at least two USB ports, a multi-channel analog switch connected with each USB port and a USB Type-C/PD controller connected with the multi-channel analog switch; the control method comprises the following steps:
and controlling the multi-path analog switch to switch in a time-sharing manner according to a preset manner, so that only one USB port is connected with the USB Type-C/PD controller in a certain time period, and therefore the USB Type-C/PD controller detects whether the at least two USB ports connected with the USB Type-C/PD controller through the multi-path analog switch are connected with external equipment or not through the CC terminal of the USB Type-C/PD controller in a time-sharing manner, and the USB Type-C/PD controller and the USBType-C/PD controller are in time-sharing communication through the at least two USB ports connected with the multi-path analog switch.
2. The method of claim 1, wherein the step of controlling the multiplexing analog switch to switch in a time-sharing manner in a predetermined manner such that only one USB port is connected to the USB Type-C/PD controller for a certain period of time comprises:
switching the multi-path analog switch to a certain USB port so that the certain USB port is connected with the USB Type-C/PD controller; and
and controlling the multi-path analog switch to conduct the connection between the certain USB port and the USB Type-C/PD controller for a preset time.
3. The USB Type-C/PD connector control method according to claim 2, characterized in that:
when the certain USB port is connected with external equipment, the multi-path analog switch is controlled to conduct the connection between the certain USB port and the USB Type-C/PD controller for a first preset time.
4. The USB Type-C/PD connector control method according to claim 3, wherein:
and when the certain USB port is not connected with external equipment, controlling the multi-path analog switch to conduct the connection between the certain USB port and the USB Type-C/PD controller for a second preset time.
5. The USB Type-C/PD connector control method according to claim 4, wherein:
the second predetermined time is less than the first predetermined time.
6. The USB Type-C/PD connector control method according to claim 4, wherein:
the second predetermined time is equal to the first predetermined time.
7. The method of controlling a USB Type-C/PD connector according to claim 1, wherein the method of controlling a USB Type-C/PD connector includes:
and receiving power request signals of external equipment connected with the at least two USB ports, transmitted from the USB Type-C/PD controller, and controlling a power supply module to supply power to the at least two USB ports according to the power request signals.
8. The USB Type-C/PD connector control method according to claim 7, wherein: the power request signal is a voltage request signal or a current request signal.
9. The method of claim 7, wherein the step of "receiving power request signals of external devices connected to the at least two USB ports transmitted from the USB Type-C/PD controller, and controlling a power supply module to supply power to the at least two USB ports according to the power request signals" comprises:
receiving a power request signal of an external device connected with the at least two USB ports, transmitted from the USBType-C/PD controller, determining a configuration power according to a preset rule, and controlling the power module to supply power to the at least two USB ports according to the determined configuration power.
10. The USB Type-C/PD connector control method of claim 9, wherein:
the preset rule is as follows: when at least two of the power request signals are the same, the same power request signal is used as configuration power.
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| CN107436853B true CN107436853B (en) | 2020-06-19 |
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| CN109346883B (en) * | 2018-09-20 | 2020-09-01 | 合肥联宝信息技术有限公司 | System for realizing positive and negative insertion of Type-C interface |
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