CN105955907A - Circuit and method for configuring pin of USB TYPE-C dedicated chip - Google Patents
Circuit and method for configuring pin of USB TYPE-C dedicated chip Download PDFInfo
- Publication number
- CN105955907A CN105955907A CN201610251402.8A CN201610251402A CN105955907A CN 105955907 A CN105955907 A CN 105955907A CN 201610251402 A CN201610251402 A CN 201610251402A CN 105955907 A CN105955907 A CN 105955907A
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- circuit
- dead battery
- way
- interface
- usb type
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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
-
- 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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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Computer Hardware Design (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Power Sources (AREA)
Abstract
The invention discloses a circuit and a method for configuring pins of a USB TYPE-C dedicated chip. The circuit comprises a dead battery circuit. The ground terminal of the dead battery circuit is connected with a CC configuration interface. The circuit and the method can realize enablement and cancelling of dead battery functions in the USB TYPE-C dedicated chip.
Description
Technical field
The invention belongs to the technical field of electronics, particularly to the circuit design of USB TYPE-C interface.
Background technology
USB, is the abbreviation of English Universal Serial Bus (USB (universal serial bus)), is that an outside is total
Line standard, is used primarily for being connected and communicate with of specification computer and external equipment, is to apply on the market the most at present
Interfacing widely, relates to computer, mobile phone, digital camera, printer and charger, portable power source
Etc. numerous digital equipments.
At present, most USB interface patterns is used to have three kinds on the market:
(1) TYPE-A (also known as Standard-A, modal USB interface pattern on traditional computer).
(2) TYPE-B (also known as Micro-B, current most of Android intelligent use interface sample
Formula).
(3)TYPE-C.USB TYPE-C is a kind of new criteria for digital equipment adapter, by
TYPE-C plug and TYPE-C socket composition.The bright spot of TYPE-C interface be support positive and negative insert,
Slim profile, transmission speed high (the highest 10Gbps) and through-put power are big (the highest 100W), simultaneously with
Its matching used USB data line also must be thinner and lighter.Further, TYPE-C interface is expected to unified
The power interface of digital equipment, USB interface, DP interface, HDMI, USB interface.
USB TYPE-C agreement is by the USB including the company such as including Hewlett-Packard, Microsoft, Texas Instrument, Intel
3.0 promote group formulates.Refer to during USB TYPE-C special chip based on this agreement be specifically designed for USB
The chip of TYPE-C application, uses this kind of chip can shorten design time, fall to design TYPE-C interface
Low development difficulty and cost.
The recognition methods to dead battery (dead battery) is defined in USB TYPE-C agreement.Dead electricity
Pond refers to cross deep due to battery discharge and cause cell voltage too low, and digital equipment now cannot be started up, also
Just cannot make charger identification identity according to the method for the drop-down 5K ohm resistance of regulation in TYPE-C agreement.
USB TYPE-C special chip need special circuit show identity with the dead battery realizing in equipment.But
It is that this function other chip functions that compare have its particularity, and reason is as follows:
(1) and not all digital equipment be desirable that support dead battery functi on.The most significant example is at USB
TYPE-C special charger cannot have dead battery functi on, otherwise will appear from the charger that is not energized from
Charging equipment is taken out the abnormality of electric current.
(2) method of register configuration can not be used as other functions to enable or cancel dead battery merit
Can, because the realization of dead battery functi on is to cannot be started up being possibly even to carry out under uncharged state at equipment.
The circuit of the dead battery functi on be given in USB TYPE-C agreement can realize as shown in Figure 1.This electricity
The principle on road is as follows: owing to chip and digital equipment use same power supply, when equipment because cell voltage is too low
When can not start shooting, chip as brownout and cannot normally start.The starting-up signal of chip
Power_on_n is high level, or owing to chip is according to not having power supply to be in floating state, NMOS tube
MN1 is in opening.Owing to resistance R2 pulls up CC mouth much larger than R1, adapter according to protocol mode
After, the voltage of CC mouth is approximately equal to the grid voltage of MN1, orchestration just can identify dead battery wait fill
Electricity equipment identities.When cell voltage is sufficiently high, chip normally works, and power_on_n is low level,
MN1 closes, owing to R2 resistance is relatively big, after adapter is according to protocol mode pull-up CC mouth, and the electricity of CC mouth
Pressure will be approximately equal to supply voltage, and equipment no longer shows charging equipment identity.
Therefore, the enable or the cancellation that control dead battery functi on be and the key of current most equipment proper communication,
Still there is no correlation technique to solve problem at present.
Summary of the invention
For solving the problems referred to above, it is an object of the invention to provide the pipe of a kind of USB TYPE-C special chip
Foot configuration circuit and method, this circuit and method are capable of in USB TYPE-C special chip dead battery merit
The enable of energy or cancellation.
Further object is that the pin configuration circuit that a kind of USB TYPE-C special chip is provided
And method, this circuit and method to realize on pcb board, or can realize in chip；It is easily achieved, controls
Simply, it is achieved with low cost.
For achieving the above object, technical scheme is as follows.
A kind of pin configuration circuit of USB TYPE-C special chip, this circuit includes dead battery circuit,
It is characterized in that the earth terminal of described dead battery circuit is connected to CC and configures interface.
Described dead battery circuit is the circuit of the dead battery functi on be given in USB TYPE-C agreement, for existing
Technology, does not repeats them here.
Described dead battery circuit has more than two-way or a two-way, and dead battery electricity more than described two-way or two-way
The earth terminal on road links together, and is all connected to CC configuration interface.
Further, dead battery circuit more than described two-way or two-way is connected to by the earth terminal of NMOS tube
Together.
Further, the NMOS tube earth terminal of dead battery circuit more than described two-way or two-way is all connected to
CC configures interface, to realize enabling or cancelling the dead battery functi on of CC interface.
A kind of pin configuration method of USB TYPE-C special chip, it is characterised in that the method by described extremely
The earth terminal of battery circuit is connected on CC configuration interface.
Further, described method includes the dead battery circuit of more than two-way or two-way, described two-way or two-way
Above dead battery circuit is that the earth terminal by NMOS tube links together, and by described NMOS tube
Earth terminal be all connected to CC configure interface.
Further, the described interface that configured by CC is connected to ground, it is possible to enable the dead of two CC interfaces
Battery functi on；CC is configured interface floating or be connected to power supply, it is possible to cancel the dead of two CC interfaces
Battery functi on.
The pin configuration circuit of the USB TYPE-C special chip that the present invention is realized and method, it is possible to realize
The enable of dead battery functi on or cancellation in USB TYPE-C special chip.And circuit realiration is simple, only
The earth terminal of battery circuit of needing to checkmate is connected to CC configuration interface and can realize, and circuit realiration is with low cost；
Can be to realize on pcb board, it is also possible to chip realizes.
Accompanying drawing explanation
Fig. 1 is the circuit diagram that prior art is implemented.
Fig. 2 is the circuit diagram that the present invention is implemented.
Detailed description of the invention
In order to make the purpose of the present invention, technical scheme and advantage clearer, below in conjunction with accompanying drawing and reality
Execute example, the present invention is further elaborated.Only should be appreciated that specific embodiment described herein
Only in order to explain the present invention, it is not intended to limit the present invention.
Shown in Fig. 2, realized the pin configuration circuit of dead battery functi on, wherein, R1/R2/R3/R4 by the present invention
For resistance；MN1/MN2 is NMOS tube；Power_on_n is input signal；CC interface is USB
TYPEC agreement shows the interface of equipment identities.
The pin configuration circuit of this USB TYPE-C special chip, includes the dead battery circuit of existing two-way,
Wherein, MN1, R1 and R2 constitute a road, and MN2, R3 and R4 constitute another road, and dead battery circuit is
The circuit of the dead battery functi on be given in USB TYPE-C agreement, for prior art, does not repeats them here.
The dead battery circuit of this two-way is linked together by the earth terminal of NMOS tube, i.e. MN1 and MN2
Earth terminal link together, and be all connected to CC configure interface.Configure interface by CC, enable or take
Disappear the dead battery functi on of CC interface.
If CC being configured interface be connected to ground, it is possible to enable the dead battery functi on of two CC interfaces.
If it is floating or be connected to power supply that CC configures interface, it is possible to cancel the dead battery merit of two CC interfaces
Energy.
Only with the dead battery circuit of two-way in Fig. 2, namely as a example by two CC interfaces, but the method also may be used
So that in being used in pcb board or the chip with the configuration of single or multiple CC interface, say, that the present invention's
The core realized is the earth terminal of existing NMOS tube is directly connected in CC configuration interface rather than connects
Ground.In concrete application, CC configuration interface complete to enable or cancel the dead battery of two CC interfaces
Function.
In the presence of the dead battery circuit of multichannel is common, it is only necessary to by dead for original multichannel battery circuit
The earth terminal of NMOS tube links together, and is commonly connected to CC configuration interface.
The present invention can reduce core with the dead battery functi on of pin configuration two or more CC interface
The cost of sheet.The TYPEC chip of multiple CC mouths is directed to organize the application of TYPEC interface more, such as
Multiple-channel output portable power source.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all at this
Any amendment, equivalent and the improvement etc. made within bright spirit and principle, should be included in the present invention
Protection domain within.
Claims (7)
1. a pin configuration circuit for USB TYPE-C special chip, this circuit includes dead battery electricity
Road, it is characterised in that the earth terminal of described dead battery circuit is connected to CC and configures interface.
2. the pin configuration circuit of USB TYPE-C special chip as claimed in claim 1, its feature
It is that described dead battery circuit has more than two-way or a two-way, and dead battery electricity more than described two-way or two-way
The earth terminal on road links together, and is all connected to CC configuration interface.
3. the pin configuration circuit of USB TYPE-C special chip as claimed in claim 2, its feature
It is that the dead battery circuit of more than described two-way or two-way is linked together by the earth terminal of NMOS tube.
4. the pin configuration circuit of USB TYPE-C special chip as claimed in claim 3, its feature
It is that the NMOS tube earth terminal of the dead battery circuit of more than described two-way or two-way is all connected to CC configuration and connects
Mouthful, to realize enabling or cancelling the dead battery functi on of CC interface.
5. the pin configuration method of a USB TYPE-C special chip, it is characterised in that the method is by institute
The earth terminal stating dead battery circuit is connected on CC configuration interface.
6. the pin configuration method of USB TYPE-C special chip as claimed in claim 5, its feature
It is that described method includes the dead battery circuit of more than two-way or two-way, more than described two-way or two-way dead
Battery circuit is that the earth terminal by NMOS tube links together, and by the earth terminal of described NMOS tube
It is all connected to CC and configures interface.
7. the pin configuration method of USB TYPE-C special chip as claimed in claim 5, its feature
It is that the described interface that configured by CC is connected to ground, it is possible to enable the dead battery functi on of two CC interfaces；
CC is configured interface floating or be connected to power supply, it is possible to cancel the dead battery functi on of two CC interfaces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610251402.8A CN105955907A (en) | 2016-04-20 | 2016-04-20 | Circuit and method for configuring pin of USB TYPE-C dedicated chip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610251402.8A CN105955907A (en) | 2016-04-20 | 2016-04-20 | Circuit and method for configuring pin of USB TYPE-C dedicated chip |
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| Publication Number | Publication Date |
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| CN105955907A true CN105955907A (en) | 2016-09-21 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610251402.8A Pending CN105955907A (en) | 2016-04-20 | 2016-04-20 | Circuit and method for configuring pin of USB TYPE-C dedicated chip |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107356882A (en) * | 2017-06-27 | 2017-11-17 | 芯海科技（深圳）股份有限公司 | A kind of PD power supply products aging testing system and method |
| CN107544653A (en) * | 2017-09-05 | 2018-01-05 | 深圳天珑无线科技有限公司 | A kind of USB Type C interface and mobile device |
| CN107658928A (en) * | 2017-09-28 | 2018-02-02 | 芯海科技（深圳）股份有限公司 | A kind of dead battery for USB TYPE C interface pulls down module |
| WO2018133409A1 (en) * | 2017-01-20 | 2018-07-26 | 深圳市金立通信设备有限公司 | Power management circuit, electronic device, and method for controlling electronic device |
| CN109038743A (en) * | 2018-08-16 | 2018-12-18 | 安克创新科技股份有限公司 | Charge wake-up circuit and its electronic equipment |
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| US20150268688A1 (en) * | 2014-03-24 | 2015-09-24 | Nokia Corporation | Pull-down circuitry for an apparatus |
| CN104978296A (en) * | 2014-04-09 | 2015-10-14 | 诺基亚公司 | Method and apparatus for determining direction of power delivery |
| CN105305565A (en) * | 2015-11-26 | 2016-02-03 | 英特格灵芯片(天津)有限公司 | Charging protection and recognition circuit and to-be-charged equipment |
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| CN203387203U (en) * | 2013-05-09 | 2014-01-08 | 上海斐讯数据通信技术有限公司 | Charging switching system possessing USB on-the-go (OTG) function |
| US20150268688A1 (en) * | 2014-03-24 | 2015-09-24 | Nokia Corporation | Pull-down circuitry for an apparatus |
| CN104978296A (en) * | 2014-04-09 | 2015-10-14 | 诺基亚公司 | Method and apparatus for determining direction of power delivery |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018133409A1 (en) * | 2017-01-20 | 2018-07-26 | 深圳市金立通信设备有限公司 | Power management circuit, electronic device, and method for controlling electronic device |
| CN107356882A (en) * | 2017-06-27 | 2017-11-17 | 芯海科技（深圳）股份有限公司 | A kind of PD power supply products aging testing system and method |
| CN107356882B (en) * | 2017-06-27 | 2019-09-06 | 芯海科技（深圳）股份有限公司 | A kind of PD power supply product ageing testing method |
| CN107544653A (en) * | 2017-09-05 | 2018-01-05 | 深圳天珑无线科技有限公司 | A kind of USB Type C interface and mobile device |
| CN107658928A (en) * | 2017-09-28 | 2018-02-02 | 芯海科技（深圳）股份有限公司 | A kind of dead battery for USB TYPE C interface pulls down module |
| CN109038743A (en) * | 2018-08-16 | 2018-12-18 | 安克创新科技股份有限公司 | Charge wake-up circuit and its electronic equipment |
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Application publication date: 20160921 |