CN105375207B - A kind of USB cable - Google Patents
A kind of USB cable Download PDFInfo
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- CN105375207B CN105375207B CN201510746826.7A CN201510746826A CN105375207B CN 105375207 B CN105375207 B CN 105375207B CN 201510746826 A CN201510746826 A CN 201510746826A CN 105375207 B CN105375207 B CN 105375207B
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Abstract
The present invention relates to a kind of USB cable, for connecting the first male end and the second male end, the functions such as CC detections and the control of the switch of configuration and VBUS power channels of the second male end are realized by USB cable internal circuit, can not only solve the problems such as downlink port shut-off or damage, and be greatly improved Consumer's Experience.
Description
Technical field
The present invention relates to USB technical fields, and referring in particular to one kind can support USB Standard A males to USB TYPE
The special USB cable of C males.
Background technology
Current USB Type C cables support superfast Differential data communication, USB2.0 D+, D- data to communicate, connect
Mouthful detection is shaken hands and the function such as power transmission, therefore has faster transmission speed（Highest 10Gbps）And more intrepid electricity
Power is transmitted（Highest 100W）.Because the characteristics of Type C two-sided insertings interface maximum is to support the two-sided insertion of USB interface, just
Formula solves the global problem of " the eternal inaccurate plugs of USB ", and positive and negative is at will inserted, therefore starts more and more extensive apply in electricity
In subdomains.
As shown in figure 1, at present USB Standard A males 1 to USB Type C males 2 cable simply simply
Connected between two males by cable 3.Specifically, as shown in Fig. 2 the power supply of the USB Standard A males 1
（VBUS）Pin, D- pins, D+ pins, ground connection（GND）The power supply of pin and the USB Type C males 2（VBUS）Pin,
Dn pins, Dp pins, ground connection（GND）Pin connects one to one, and in the VBUS pins and CC of the USB Type C males 2
The resistance value for directly adding resistance a Rp, the Rp between pin (A5 pin) is usually 56 kilohms, i.e., only declares default
USB power capabilities.The Standard A males of USB 2.0 are discussed above to the cable inner circuit of USB Type C males, together
Reason is for the Standard A males of USB 3.1 to USB Type C males, except two pairs of differential high-speed data receiving and transmitting signal lines of increase
And outside corresponding ground wire, as the above-mentioned Standard A males of USB 2.0 to USB Type C male cable configurations, specifically
Ground, the StdA_SSRX+ pins of the Standard A males 1 of USB 3.1, StdA_SSRX- pins, StdA_SSTX+ pins,
StdA_SSTX- pins and SSTXp1 pins, SSTXn1 pins, SSRXp1 pins, the SSRXn1 of the USB Type C males are managed
Pin connects one to one.The other USB Type C-terminals have a Rp resistance to be connected across between VBUS pins and CC pins, with
Just the C-terminal male of this cable declares oneself to be USB Type C downlink ports DFP when being connected with the equipment with C-terminal female seat
(Downstream Facing Port)。
According to USB Type C specifications, as a rule, downlink port DFP is detecting USB Type C uplink ports UFP
The power supply of the VBUS pins of C-terminal male can be kept to be off state before (Upstream Facing Port).And existing line
The A ends VBUS power supplys and C-terminal VBUS power supplys of cable are the pass-through states often connected, directly result in the pass for the VBUS that can not support early stage
Disconnected demand；In addition, cable once designs and produces completion, its Rp value is just fixed, can not be according to the USB Standard A
Male connects the real current capacity adjustment Rp values of power end to configure correct current capacity parameter to make C-terminal connected
UFP knows.So that if Rp instructions DFP is 3A current capacities, and actually power end only has such as 500mA electric currents energy
Power, at this moment, UFP may cause DFP sources to turn off or damage according to DFP 3A abilities sourcing currents;Or cable simply passes through
56 kilohms of Rp values declare most conservative USB default power abilities.
The content of the invention
Therefore, the technical problems to be solved by the invention are to overcome can not support USB Type C early stage in the prior art
The shut-off demand and USB Type C downlink ports of downlink port are likely to occur the problems such as source damage can be with so as to provide one kind
The shut-off of control USB Type C downlink ports and the USB cable for avoiding DFP sources from turning off or damage.
In order to solve the above technical problems, a kind of USB cable of the present invention, for connecting the first male end and the second male end, its
Described in the first male end include the first VBUS pins, D- pins, D+ pins and the first ground pin, second male end includes
2nd VBUS pins, Dn pins, Dp pins, CC pins and the second ground pin, and the D- pins and the Dn pins phase
Even, the D+ pins are connected with the Dp pins, and first ground pin is connected with second ground pin, the USB
Cable inner includes CC pin detection configuration module and VBUS power switching modules, wherein the first VBUS pins pass through VBUS electricity
Source switch module is connected with the 2nd VBUS pins, and the first VBUS pins detect configuration module and CC pins by CC pin
It is connected, and CC pin detection configuration module is connected with the VBUS power switching modules.
In one embodiment of the invention, the first VBUS pins by the first male end current capacity detection module with
First ground pin is connected, and the first male end current capacity detection module detects configuration module phase with the CC pin
Even.
In one embodiment of the invention, the CC pin detection configuration module is connected with optional input module.
In one embodiment of the invention, the first VBUS pins are also matched somebody with somebody by control unit and CC pin detection
Module is put to be connected.
In one embodiment of the invention, the first male end current capacity detection module also with described control unit phase
Even.
In one embodiment of the invention, described control unit is connected with the second male end temperature detecting module, and described
CC pin detection configuration module is connected with the second male end temperature detecting module.
In one embodiment of the invention, the D- pins and the D+ pins are connected with control unit respectively.
In one embodiment of the invention, the Dn pins and the Dp pins are connected with control unit respectively.
In one embodiment of the invention, the 2nd VBUS pins pass through resistance and light emitting diode and described second
Ground pin is connected, and the positive pole of the light emitting diode is connected with the resistance, the negative pole of the light emitting diode with it is described
Second ground pin is connected.
In one embodiment of the invention, it is provided with variable resistor in the CC pin detection configuration module.
The above-mentioned technical proposal of the present invention has advantages below compared with prior art：
USB cable of the present invention, by the circuit realiration of cable inner, the CC of C-terminal is detected and configuration, VBUS power supplys
The switch of passage controls and corresponded to the instruction of C-terminal VBUS power LEDs, C-terminal male and by the c-type female seat of C-terminal male insertion equipment
The equipment such as overtemperature protection, the voltage specification of A ends corresponding power and the detection of current capacity and mobile phone passes through Dn/Dp or D-/D+
The function such as it is authenticated to cable, certainly will be largely used by significant increase Consumer's Experience and by market.
Brief description of the drawings
In order that present disclosure is more likely to be clearly understood, specific embodiment and combination below according to the present invention
Accompanying drawing, the present invention is further detailed explanation, wherein
Fig. 1 is outline drawing of the existing USB Standard A males to USB Type C male cables；
Fig. 2 is interconnector figure of the existing USB Standard A males to USB Type C male cables；
Fig. 3 is inside connection figure of the USB Standard A males of the present invention to USB Type C male cables.
Embodiment
Embodiment one：
As shown in figure 3, a kind of USB cable, for connecting the first male end 10 and the second male end 20, wherein first male end
10 include the first VBUS pins, D- pins, D+ pins and the first ground pin, and second male end 20 is managed including the 2nd VBUS
Pin, Dn pins, Dp pins, CC pins and the second ground pin, and the D- pins are connected with the Dn pins, the D+ pipes
Pin is connected with the Dp pins, and first ground pin is connected with second ground pin, includes inside the USB cable
CC pin detect configuration module and VBUS power switching modules, wherein the first VBUS pins by VBUS power switching modules with
The 2nd VBUS pins are connected, and the first VBUS pins detect configuration module by CC pin and are connected with CC pins, and described
CC pin detection configuration module is connected with the VBUS power switching modules.
USB cable of the present invention, for connecting the first male end 10 and the second male end 20, wherein first male end 10 is wrapped
Include the first VBUS pins, D- pins, D+ pins and the first ground pin, second male end 20 include the 2nd VBUS pins,
Dn pins, Dp pins, CC pins and the second ground pin, and the D- pins are connected with the Dn pins, the D+ pins
It is connected with the Dp pins, first ground pin is connected with second ground pin, first ground pin and institute
State the second ground pin to be grounded, CC pin detection configuration module and VBUS power switching modules are included inside the USB cable, its
Described in the first VBUS pins be connected by VBUS power switching modules with the 2nd VBUS pins, the first VBUS pins
Configuration module is detected by CC pin with CC pins to be connected, and CC pin detection configuration module and the VBUS power switching modules
It is connected.When first male end 10 is inserted into USB power source port, the CC pin detection configuration module is started working, when described
Second male end 20 is inserted into uplink port UFP or supports double role port DRP (Dual Role of uplink port UFP functions
When Port), the downlink port DFP notice specific current capacities of uplink port this downlink port of UFP DFP, if the downlink port
DFP and the electric current of USB power source port mismatch, then the CC pin detection configuration module will control VBUS power switches to keep disconnected
Open state, so as to prevent downlink port DFP from turning off or damage, now by controlling the CC pin to detect inside configuration module
Resistance value or equivalent current source can be set, and first male end 10 is connected the real current capacity of power end and passed through
The resistance of CC pin detection configuration module is adjusted to configure correct current capacity parameter to allow the institute of the second male end 20
The UFP of connection knows；If the downlink port DFP and the currents match of USB power source port, in the downlink port DFP insertions
By the reaction time after the UFP of row port, after 100 milliseconds, the CC pin detection configuration module will control VBUS power switches
Closure, the first VBUS pins is connected with the 2nd VBUS pins and powered so as to realize to uplink port UFP.
In the present embodiment, size of current during in order to know that first male end 10 is inserted into USB power source port, and detect
The voltage specification and current capacity of USB power source, the first VBUS pins pass through the first male end current capacity detection module and institute
State the first ground pin to be connected, connect by the first VBUS pins, the first male end current capacity detection module and described first
Ground pin forms loop so as to be obtained with the electric current and voltage of first male end 10；The first male end current capacity inspection
Module is surveyed with CC pin detection configuration module to be connected, and CC pin detection configuration module is connected with the CC pins, so as to
Realize and utilize the downlink port DFP notice specific current capacities of uplink port this downlink port of UFP DFP.
In order that the currents match of the downlink port DFP and USB power source port, the CC pin detect configuration module and can
Select input module to be connected, and variable resistor Rp is provided with CC pin detection configuration module, the CC pin detection configuration module
Circuit can be according to the level state of its 1-2 " optional input " pin come to the Rp resistance values inside CC pin detection configuration module
Or equivalent current source is set.
In addition, in order that the currents match of the downlink port DFP and USB power source port, deformed as one kind, described the
One VBUS pins detect configuration module with the CC pin by control unit and are connected, and described control unit module mainly passes through first
Male end current capacity detection module determines that first male end 10 connects the current capacity of power supply, and described control unit mould in advance
Block also can detect configuration module to CC pin and be controlled, and inputted by the controlling of described control unit, CC pin are detected and configured
The Rp resistance values of inside modules or equivalent current source are set.Specifically, the first male end current capacity detection module
Configuration module is detected by control unit module with the CC pin to be connected, the first male end current capacity detection module is by described in
The current feedback that first male end 10 obtains is realized to described to described control unit by the controlling input of described control unit
Rp resistance values or equivalent current source inside CC pin detection configuration module are set.Wherein, the first male end electric current energy
Power detection module is before VBUS power switches closure using the various combination of its internal load impedance to the first male end 10
The VBUS directly to come is loaded in short-term, then electric current of the described control unit module in the first male end current capacity detection module
VBUS passages can be tested with the help of sensor, and now corresponding electric current and other test are input to described control unit module
Voltage of VBUS come together to judge that first male end 10 connects the electric current of power supply and the limit of power of voltage.
In the present embodiment, in order to prevent power supply or ground contact impedance is bigger than normal or power line has extra electric current to let out ground wire
During dew, second male end 20 may produce that high fever even results in cable and equipment interface is burnt, it is necessary to detect described second
The temperature of male end 20, specifically, described control unit are connected with the second male end temperature detecting module, and CC pin detection configuration
Module is connected with the second male end temperature detecting module, the second male end temperature detecting module by the temperature of detection send to
Described control unit, described control unit respond to the temperature detection result of the second male end temperature detecting module, lead to
The state that the CC pin detection configuration module controls the VBUS power switching modules is crossed, once temperature is too high, described in cut-out
VBUS power switches, realize the overtemperature protection to second male end 20.
In order to judge cable whether be its original-pack high-performance high current ability cable, by equipment such as mobile phones to cable
It is authenticated, the D- pins and the D+ pins are connected with control unit respectively, by described control unit to the D-
Pin and the D+ pins are authenticated communication so as to judge whether the cable is client cables；Deformed as one kind, institute
Stating control unit can also be authenticated communicating to the Dn pins and the Dp pins, specifically, the Dn pins and
The Dp pins are connected with control unit respectively, so as to judge whether the cable is client cables.It is worth noting that：It is described
Control unit module is needed between the Dn/Dp of first male end 10 or second male end 20 D-/D+ is not influenceed
In the case of detection and data communication, with Dn/Dp or D-, /+is authenticated communication to realize cable identified in itself.
In order to judge whether the 2nd VBUS pins have electricity, the 2nd VBUS pins pass through resistance and light emitting diode
It is connected with second ground pin, and the positive pole of the light emitting diode is connected with the resistance, the light emitting diode
Negative pole is connected with second ground pin, if the 2nd VBUS pins have electricity, LED instruction can be bright, does not otherwise work.
CC pin detection configuration module, VBUS power switching modules, the second male end temperature detecting module, control described in the present embodiment
Unit module, the first male end current capacity detection module and the 2nd VBUS processed have all or part of functions of the LED instructions of electricity etc.
The solution of one or multiple chips is integrated into after reconfiguring.
First male end of the present invention is USB Standard A males, and second male end is USB Type C males,
The USB cable can apply charger, onboard charger, mobile electricity on the wall with USB Standard A interface female seats
Source, PC etc. are on the power supply management of the electronic equipment with USB Type C interface female seats (uplink port UFP).
To sum up, technical scheme of the present invention has advantages below：
1. USB cable of the present invention, when first male end is inserted into USB power source port, the CC pin detection is matched somebody with somebody
Module start-up operation is put, when second male end is inserted into uplink port UFP, downlink port DFP notice uplink port UFP sheets
The specific current capacities of downlink port DFP, if the downlink port DFP and the electric current of USB power source port mismatch, the CC
Pin detection configuration module will control VBUS power switches to remain off, so as to prevent downlink port DFP from turning off or damage
It is bad, it can now be set, be made by controlling the CC pin to detect resistance value inside configuration module or equivalent current source
First male end connect the real current capacity of power end and configured by adjusting Rp values correct current capacity parameter so as to
The UFP for allowing second male end to be connected knows；If the downlink port DFP and the currents match of USB power source port, under described
By reaction time, the CC pin detection configuration module VBUS power supplys will be controlled to open after row port DFP insertion uplink ports UFP
Close and close, the first VBUS pins is connected with the 2nd VBUS pins and powered so as to realize to uplink port UFP.
2. USB cable of the present invention, in order to prevent power supply or ground contact impedance is bigger than normal or power line has volume to ground wire
During outer leakage of current, second male end may produce that high fever even results in cable and equipment interface burns, the control
Unit is connected with the second male end temperature detecting module, and CC pin detection configuration module and the second male end temperature detection mould
Block is connected, and the second male end temperature detecting module sends the temperature of detection to described control unit, described control unit pair
The temperature detection result of the second male end temperature detecting module is responded, and detecting configuration module by the CC pin controls institute
The state of VBUS power switching modules is stated, once temperature is too high, the VBUS power switches is cut off, realizes to second male end
Overtemperature protection.
3. USB cable of the present invention, in order to judge cable whether be its original-pack high-performance high current ability line
Cable, cable is authenticated by equipment such as mobile phones, the D- pins, the D+ pins, the Dn pins and Dp pipes
Pin is connected with control unit, by described control unit to the D- pins and the D+ pins be authenticated communication or
Communication is authenticated to the Dn pins and the Dp pins so as to judge whether the cable is client cables.
Obviously, above-described embodiment is only intended to clearly illustrate example, not to the restriction of embodiment.For
For those of ordinary skill in the art, other multi-form changes can also be made on the basis of the above description or are become
It is dynamic.There is no necessity and possibility to exhaust all the enbodiments.And the obvious change or change thus extended out
Among moving still in the protection domain of the invention.
Claims (7)
- A kind of 1. USB cable, for connecting the first male end and the second male end, wherein first male end is managed including the first VBUS Pin, D- pins, D+ pins and the first ground pin, second male end include the 2nd VBUS pins, Dn pins, Dp pins, CC pins and the second ground pin, and the D- pins are connected with the Dn pins, the D+ pins and the Dp pins phase Even, first ground pin is connected with second ground pin, it is characterised in that：Include CC pin inside the USB cable Detect configuration module and VBUS power switching modules, wherein the first VBUS pins by VBUS power switching modules with it is described 2nd VBUS pins are connected, and the first VBUS pins detect configuration module by CC pin and are connected with CC pins, and the CC pin Detection configuration module is connected with the VBUS power switching modules, and the first VBUS pins are examined by the first male end current capacity Survey module with first ground pin to be connected, and the first male end current capacity detection module configures with CC pin detection Module is connected, and the CC pin detection configuration module is connected with optional input module, and being provided with the CC pin detection configuration module can Become resistance.
- 2. USB cable according to claim 1, it is characterised in that：The first VBUS pins also by control unit with The CC pin detection configuration module is connected.
- 3. USB cable according to claim 2, it is characterised in that：The first male end current capacity detection module also with Described control unit is connected.
- 4. USB cable according to claim 2, it is characterised in that：Described control unit and the second male end temperature detection mould Block is connected, and CC pin detection configuration module is connected with the second male end temperature detecting module.
- 5. USB cable according to claim 2, it is characterised in that：The D- pins and the D+ pins respectively with control Unit processed is connected.
- 6. USB cable according to claim 2, it is characterised in that：The Dn pins and the Dp pins respectively with control Unit processed is connected.
- 7. USB cable according to claim 1, it is characterised in that：The 2nd VBUS pins pass through resistance and luminous two Pole pipe is connected with second ground pin, and the positive pole of the light emitting diode is connected with the resistance, the light-emitting diodes The negative pole of pipe is connected with second ground pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510746826.7A CN105375207B (en) | 2015-11-05 | 2015-11-05 | A kind of USB cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510746826.7A CN105375207B (en) | 2015-11-05 | 2015-11-05 | A kind of USB cable |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105375207A CN105375207A (en) | 2016-03-02 |
| CN105375207B true CN105375207B (en) | 2018-02-06 |
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| CN201510746826.7A Active CN105375207B (en) | 2015-11-05 | 2015-11-05 | A kind of USB cable |
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| CN (1) | CN105375207B (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US10437752B2 (en) | 2016-03-11 | 2019-10-08 | Huawei Technologies Co., Ltd. | Method for establishing connection between devices having universal serial bus USB type-C interfaces, and terminal device |
| CN107436571B (en) * | 2016-05-28 | 2020-05-08 | 深圳市京泉华科技股份有限公司 | USB Type-C/PD connector |
| CN105954644B (en) * | 2016-06-30 | 2020-02-07 | 成绎半导体技术（上海）有限公司 | Public first intellectual detection system of USBType-C interface and protection circuit |
| CN106026006B (en) * | 2016-06-30 | 2019-07-16 | 成绎半导体技术（上海）有限公司 | A kind of USB Type-C interface female intelligent measurement and protection circuit |
| CN106208260B (en) * | 2016-08-31 | 2018-12-04 | 维沃移动通信有限公司 | A kind of charging circuit, data line and charging interface |
| CN106502939B (en) * | 2016-09-23 | 2020-01-10 | 北京小米移动软件有限公司 | USB adapter and data transmission equipment |
| CN106877103B (en) * | 2017-01-03 | 2019-10-08 | 努比亚技术有限公司 | A kind of method that realizing circuit switching and adapter |
| CN107783929A (en) * | 2017-03-31 | 2018-03-09 | 威盛电子股份有限公司 | Electronic marker and associated cable and method |
| CN107480086B (en) * | 2017-08-04 | 2020-11-03 | 青岛海信移动通信技术股份有限公司 | Terminal and control method thereof |
| JP7148293B2 (en) | 2018-06-29 | 2022-10-05 | キヤノン株式会社 | Electronic device, electronic device control method, and imaging device |
| CN110416849B (en) * | 2019-07-25 | 2021-11-02 | 广东玖木通实业有限公司 | Data line with temperature overtemperature protection function |
| TWI754477B (en) | 2020-12-01 | 2022-02-01 | 創惟科技股份有限公司 | Usb signal transmission device, usb cable and operation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9805890B2 (en) * | 2011-11-07 | 2017-10-31 | Cooper Technologies Company | Electronic device state detection for zero power charger control, systems and methods |
| US9419452B2 (en) * | 2013-08-14 | 2016-08-16 | Nokia Technologies Oy | Charging connector overheat detection and protection apparatus |
| US9727518B2 (en) * | 2013-10-10 | 2017-08-08 | Nokia Technologies Oy | Communication control pins in a dual row connector |
| CN203871616U (en) * | 2014-04-01 | 2014-10-08 | 中国移动通信集团终端有限公司 | USB data line |
| CN204517058U (en) * | 2015-02-15 | 2015-07-29 | 张林翔 | There is the cable structure of charging flowing deixis |
| CN104881391B (en) * | 2015-06-10 | 2017-09-19 | 赛尔康技术（深圳）有限公司 | A kind of identification circuit of USB Type C interface |
| CN205231376U (en) * | 2015-11-05 | 2016-05-11 | 罗勇进 | USB cable |
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2015
- 2015-11-05 CN CN201510746826.7A patent/CN105375207B/en active Active
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| CN105375207A (en) | 2016-03-02 |
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Effective date of registration: 20170210 Address after: 518000 Guangdong city of Shenzhen province Qianhai Shenzhen Hong Kong cooperation zone before Bay Road No. 1 building 201 room A Applicant after: Shenzhen macare Intelligent System Co. Ltd. Address before: 200126 Shanghai city Pudong New Area Gaoqing road 2878 Lane 66 building room 1001 Applicant before: Luo Yongjin |
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