WO2009074074A1 - Connecteur de câble pour connecter un câble à une carte et carte - Google Patents

Connecteur de câble pour connecter un câble à une carte et carte Download PDF

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Publication number
WO2009074074A1
WO2009074074A1 PCT/CN2008/073236 CN2008073236W WO2009074074A1 WO 2009074074 A1 WO2009074074 A1 WO 2009074074A1 CN 2008073236 W CN2008073236 W CN 2008073236W WO 2009074074 A1 WO2009074074 A1 WO 2009074074A1
Authority
WO
WIPO (PCT)
Prior art keywords
cable
channel
interface
control module
identification information
Prior art date
Application number
PCT/CN2008/073236
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English (en)
Chinese (zh)
Inventor
Congliang Niu
Original Assignee
Huawei Technologies Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huawei Technologies Co., Ltd. filed Critical Huawei Technologies Co., Ltd.
Publication of WO2009074074A1 publication Critical patent/WO2009074074A1/fr

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/64—Means for preventing incorrect coupling
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/38—Impedance-matching networks

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a cable connector and a corresponding single board for connecting a single board and a cable.
  • the boards need to provide different working states and can be connected with cables of different specifications.
  • the working chip supports E1 and T1 modes of operation, and can be connected with three types of cables (120 ohms, 75 ohms, 100 ohms).
  • the El and T1 links are important transmission links in the communication system, and the reliability of their operation has an important impact on the normal operation of the whole system. Therefore, the impedance matching of the El and T1 links to the transmitting and receiving ends is strict, if the line is Matching errors have a great impact on the performance and bit error rate of the transmission.
  • E1 cables 120 ohms and 75 ohms and T1 cables of 100 ohms.
  • the following methods are generally used for chip operation mode identification and impedance matching of the transmission interface.
  • the board A1 is connected to the cable A2 through the docking of the board connector J1 and the cable connector J2.
  • the transmitting channels of the E1/T1 chip on the board A1 are TX+ and TX-, and the receiving channels are RX+ and RX-.
  • Three resistors R1, R2, and R3 for impedance matching are respectively connected to the receiving channel, and are controlled by the DIP switches K1, ⁇ 2, and ⁇ 3 respectively;
  • the control module on the board A1 passes through the microprocessor interface (MPI: Micro Processor Interface ) Connected to the E1/T1 chip, the two pins of the control module are controlled by the DIP switches K4 and ⁇ 5.
  • MPI Micro Processor Interface
  • the dial switches Kl, ⁇ 2, ⁇ 3, ⁇ 4, ⁇ 5 dial to the corresponding state In actual use, according to the working mode (El Tl ) that the board needs to support and the type of cable that is manually recognized (120 ohms, 75 ohms, 100 ohms), the dial switches Kl, ⁇ 2, ⁇ 3, ⁇ 4, ⁇ 5 dial to the corresponding state.
  • ⁇ 4 and ⁇ 5 are the working mode and cable type indicating switch of the El/Tl chip
  • the control module sets the working mode (E1 or T1) of the E1/T1 chip through the MPI interface according to the read state of the DIP switches K4 and K5.
  • the corresponding chip internal output impedance matches the relevant registers, thereby realizing the setting of the working mode of the E1/T1 chip and the impedance and power of the transmitting end.
  • impedance matching at the receiving end requires resistors external to the E1/T1 chip, matching 1 1 and 75 ohm cable matching, R2 and 120 ohm cable matching, R3 and 100 ohm cable matching, then dialing when using 75 ohm cable
  • the code switch K1 is turned to the ON position, and the other two switches are turned to the OFF position.
  • the DIP switch K2 is turned to the ON position.
  • a cable connector for connecting a single board and a cable comprising: a cable interface for connecting a cable; a first docking interface, including a first working interface and a first identification interface; the first working interface is used for The cable interface is externally connected to the board; the first identification interface is configured to provide cable type identification information to the board.
  • a single board includes: a control module, having an identification channel, configured to acquire cable type identification information through the identification channel, and output a mode control signal and an impedance control signal according to the cable type identification information; and the working chip has a signal channel connected to the control module, and a transmitting and receiving channel; configured to acquire the mode control signal through the signal channel, and adjust to a corresponding working mode according to the mode control signal; and an impedance matching module having the control module And a connected control channel, configured to acquire the impedance control signal through the control channel, and connect the adapted resistor to the receiving channel of the working chip according to the impedance control signal.
  • the embodiment of the present invention adopts an interface for providing cable type identification information in a connector, and a corresponding identification and control mechanism is configured in the board; after the cable is connected to the board, the board can identify the cable type.
  • the complexity of the work eliminates the hidden dangers of impedance mismatch caused by operational errors.
  • FIG. 1 is a schematic diagram of a matching manner of a conventional single board and a cable
  • FIG. 2 is a schematic view showing the basic structure of a cable connector according to an embodiment of the present invention.
  • FIG. 3 is a schematic diagram showing several specific structures of a first identification interface according to an embodiment of the present invention.
  • FIG. 4 is a schematic diagram of a basic logical structure of a board according to an embodiment of the present invention.
  • FIG. 5 is a schematic diagram of a specific logical structure of a control module according to an embodiment of the present invention.
  • FIG. 6 is a schematic diagram of another specific logical structure of a control module according to an embodiment of the present invention.
  • FIG. 7 is a schematic diagram of a specific logical structure of a board according to an embodiment of the present invention.
  • FIG. 8 is a schematic diagram of a specific connection between a board and a cable connector according to an embodiment of the present invention
  • FIG. 9 is a schematic diagram of a relationship between an interface state and a cable type according to an embodiment of the present invention.
  • An interface for providing cable type identification information is provided in the cable connector, and a corresponding identification and control mechanism is disposed in the board. The following is a detailed description.
  • the basic structure of the cable connector for connecting a single board and a cable can provide a connection from the cable to the single board connector J12 with reference to the cable connector J11, including the cable interface 101 for connecting the cable and the first The docking interface 102; the first docking interface 102 includes a first working interface a1 and a first identifying interface bl; the first working interface a1 is for externally connecting the cable interface 101; and the first identifying interface bl is for providing cable type identification information.
  • the board connector J12 is adapted to the cable connector J11, and can perform corresponding interface division, that is, includes the second docking interface 103 and the board interface 104.
  • the second docking interface 103 includes the second working interface a2 and the second identification interface b2.
  • the first working interface a1 and the first identifying interface b1 are respectively connected to the first working interface a1, and the third working interface a3 and the third identifying interface b3 are respectively used for the second
  • the working interface a2 and the second identification interface b2 are connected to the single board.
  • the cable interface 101 and the first working interface a1 in the cable connector J11, and the second working interface a2 and the third working interface a3 in the single board connector J12 can be designed with reference to the usual interface mode.
  • the first identification interface M may be an additional interface, or may be charged by using an unused pin in the current interface.
  • one or more pins may be used, and the corresponding second identification interface b2 and third identification interface b3 can be adapted to the first identification interface b1.
  • the function is to connect the first identification interface b1 to the board.
  • the first identification interface can provide cable type identification information in a digital or analog manner:
  • An optional simple digital method is: a pin is provided by the first identification interface, and the pin is connected to a readable static storage unit, wherein the cable type identification information is saved, and the board reads the static through the connection of the connector.
  • the storage unit acquires the corresponding cable type identification information.
  • An alternative simple analog approach is to provide one or more pins from the first identification interface, and provide cable type identification information by the connection status of the pins.
  • the boards are respectively connected to the pins through the connectors, and the basic pull-up or pull-down levels can be provided in the boards. Based on the different connection states of the pins, the boards can read different level signals on the corresponding lines. To obtain the corresponding cable type identification information.
  • the connection state of the two pins is selected from one of the following states: ST1 and ST2 are both grounded, ST1 and ST2 are both floating, ST1 is grounded and ST2 is floating, ST1 is floating and ST2 is grounded.
  • the different connection states of ST1 and ST2 can provide four kinds of signals (see high level as "1" and low level as "0"): 00, 11, 01 , 10.
  • Three of these four signals can be selected as cable type identification information for the following three cables: 75 ohm cable, 120 ohm cable, 100 ohm cable. This allows the board to determine the type of cable to be connected by reading the level of the line connected to ST1 and ST2.
  • the structure is referred to Figure 4, including:
  • the control module 201 has an identification channel L1 for acquiring cable type identification information by identifying the channel L1, and outputting a mode control signal and an impedance control signal according to the cable type identification information.
  • the working chip 202 has a signal channel L2 connected to the control module 201, and a transmitting channel L3 and a receiving channel L4.
  • the mode control signal provided by the control module 201 is obtained through the signal channel L2, and is adjusted according to the mode control signal to the corresponding working mode. .
  • the impedance matching module 203 has a control channel L5 connected to the control module 201 for controlling The channel L5 acquires the impedance control signal provided by the control module 201, and the adapted resistor is connected to the receiving channel L4 of the working chip 202 according to the impedance control signal.
  • control module 201 can also be used to report the identified cable type according to the cable type identification information.
  • the control module can read the cable type identification information provided through the identification channel L1 at a timing or when the line level of the recognition channel L1 is changed, and report the cable to the background through the software, so that the type of the cable can be queried in the background, and can be far away.
  • the value of the mode control signal and the impedance control signal are changed by software to realize the value of the far end modified impedance matching.
  • the working chip 202 in this embodiment can be of an existing chip type, such as an existing E1/T1 chip.
  • the implementation of the control module 201 can be implemented in two ways:
  • control module can adopt the following two structures:
  • Mode control module 2011 Refer to Figure 5, including the mode control module 2011 and the impedance control module 2012.
  • Mode control module 2011 is the mode control module 2011 and the impedance control module 2012.
  • the function of the existing control module is completed, which is used to obtain the cable type identification information by identifying the channel L1, and output the mode control signal according to the cable type identification information.
  • the impedance control module 2012 is configured to acquire cable type identification information by identifying the channel L1, and output an impedance control signal according to the cable type identification information. Under this structure, if the cable type identification information transmitted by the recognition channel L1 and the impedance control signal transmitted by the control channel L5 can be represented by a simple level change, the impedance control module 2012 can be designed as a simple electronic circuit structure without logic. Chip support.
  • the mode control module 2013 is configured to obtain the cable type identification information by identifying the channel L1, and output the mode control signal and the resistance selection signal according to the cable type identification information.
  • the impedance control module 2014 is configured to output an impedance control signal according to the resistance selection signal output by the mode control module 2013.
  • the transmitting channel L3 and the receiving channel L4 of the board of the embodiment are connected to the working interface of the cable connector, and the identifying channel L1 is connected to the identification interface of the cable connector.
  • the identification channel L1 may be a data line for reading the static storage unit, or one or more lines, and the control module 201 passes The levels on these lines acquire cable type identification information.
  • the cable connector adopts the structure based on FIG. 3, and the working chip adopts the E1/T1 chip, and the signal between the control module and the E1/T1 chip.
  • Channel L2 uses the MPI interface, the transmission channels are TX+ and TX-, and the receiving channels are RX+ and RX-.
  • the identification channel includes a first line L11 and a second line L12, and the board provides pull-up levels VC of the two lines through pull-up resistors R4 and R5.
  • the levels on the two lines are selected from one of the following: L11 and L12 are low, L11 and L12 are high, and L11 is low. L12 is high, L11 is high and L12 is low.
  • the control module obtains the cable type identification information for identifying one of the following cables through the levels on L11 and L12: 75 ohm cable, 120 ohm cable, 100 ohm cable; Select the corresponding resistance according to the cable type identification information output indication of each cable The impedance control signal of the value; the mode control signal for selecting the E1 mode according to the cable type identification information output indication of the first two cables, and the mode control signal for selecting the T1 mode according to the cable type identification information output indication of the latter cable.
  • the impedance matching module can adopt a simple structure including N electronic switches with control terminals and N resistors, and N is an integer greater than or equal to 2.
  • N electronic switches respectively connect N resistors to the receiving channel of the working chip, and switch the on-off state of the connected resistor according to the control signals of the respective control terminals.
  • the electronic switch has such characteristics: When the control signal of the control terminal is high, both ends of the electronic switch are turned on, and when the control signal of the control terminal is low, both ends of the electronic switch are turned off.
  • the electronic switch can be a device with high reliability and easy control such as a triode or a power MOS transistor.
  • control channel L5 includes N lines, respectively connected to the control ends of the N electronic switches; the impedance control signal output mode of the control module is, according to the cable type identification information, the output is controlled on the N lines of the control channel.
  • the on/off level signal of an electronic switch is, according to the cable type identification information, the output is controlled on the N lines of the control channel.
  • the impedance matching module of FIG. 7 includes three electronic switches kl, k2, k3 with control terminals and three resistance values respectively with 75 ohms, 120 ohms, 100 ohms.
  • the control channel includes Three lines L51, L52, and L53 are connected to the control terminals of kl, k2, and k3, respectively.
  • the impedance control signal output mode of the control module is: when the cable type is M ohm cable, M is 75 or 120 or 100, and the level of the control electronic switch is turned on on the corresponding line of the control channel, the line An electronic switch that connects the resistors that match the M ohmic cable outputs a level that controls the electronic switch to open on the other two lines of the control channel.
  • the board C1 basically adopts the structure shown in Figure 7, except that the control module also provides a cable type reporting function; the cable C2 is a 75 ohm cable or a 120 ohm cable or a 100 ohm cable, and the cable type and the board working mode and The relationship between matching impedances is shown in Table 1:
  • Cable connector J21's first identification interface uses two reserved pins ST1 and ST2 to provide cable type identification signals.
  • the corresponding relationship between cable type and ST1 and ST2 connection status is shown in Figure 9.
  • the board connector J22 is mated with the cable connector J21; the control module of the board C1 reads the level signals of ST1 and ST2 by identifying the two lines L11 and L12 of the channel.
  • the control module When the cable C2 is inserted into the board through J21 and J22, the control module recognizes the type of the inserted cable through the change of the level signals of ST1 and ST2, thereby performing the corresponding working mode configuration and impedance matching operation: E1/T1 is configured through the MPI interface.
  • the registers in the chip enable the chip to work in the corresponding working mode; for the impedance matching of the transmitting end, the control module writes the register of the E1/T1 chip through the MPI interface to change the output impedance of the E1/T1 chip to match the cable impedance; the receiving end Impedance matching requires the external resistor of the E1/T1 chip.
  • the control module outputs corresponding control signals on the three lines L51, L52 and L53 of the control channel according to the identified cable type, and controls the on and off of the electronic switches kl, k2 and k3 to achieve the impedance of the receiving end. Matches the impedance of the cable.
  • Table 2 Cable identification signal operation control signal electronic switch status matching Type ST1 ST2 mode L51 L52 L53 kl k2 k3 impedance
  • control module can report the impedance of the cable to the background through software, which is convenient for the user to remotely query the impedance of the cable and perform maintenance operations such as modification.
  • the board and the corresponding cable connector provided by the foregoing embodiments can automatically recognize and automatically configure the working mode of the board, and the link impedance can also be automatically recognized and matched, and the link impedance can also be reported to avoid the scene.
  • Personnel identification of cable types and dialing operations reduces the complexity of field operations and eliminates the potential for impedance mismatches caused by operational errors.
  • the present invention can be realized with a simple structure and at a low cost; and the use of a device having low reliability is avoided, and the reliability of the product is improved.
  • the board is described in detail, and the principles and implementation manners of the present invention are explained in the specific examples. The description of the above embodiments is only used to help understand the method and core idea of the present invention; The present invention is not limited by the scope of the present invention, and the details of the present invention are not limited by the scope of the present invention.

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Abstract

L'invention porte sur un connecteur de câble pour connecter un câble à une carte et sur la carte correspondante. Une interface pour fournir des informations d'identification de type de câble est réglée dans le connecteur de câble et un module d'identification et de commande correspondant est réglé dans la carte. Une fois que le câble est connecté à la carte, cette solution permet à la carte d'identifier automatiquement un mode de travail nécessaire et des informations d'impédance de liaison à l'aide du signal d'identification obtenu de type de câble, et à exécuter une configuration et une adaptation correspondantes, qui évite une identification et une manipulation manuelles par intervention humaine, réduit la complexité d'opérations sur site et élimine des problèmes cachés, tels qu'une désadaptation d'impédance due à une erreur de manipulation.
PCT/CN2008/073236 2007-11-28 2008-11-28 Connecteur de câble pour connecter un câble à une carte et carte WO2009074074A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN200710168196.5 2007-11-28
CNA2007101681965A CN101227032A (zh) 2007-11-28 2007-11-28 用于连接单板与电缆的电缆连接器和单板

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WO2009074074A1 true WO2009074074A1 (fr) 2009-06-18

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WO (1) WO2009074074A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3171480A4 (fr) * 2015-04-29 2018-01-31 Guangdong Oppo Mobile Telecommunications Corp., Ltd Procédé d'identification de types de câbles, adaptateur de puissance et câble

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101227032A (zh) * 2007-11-28 2008-07-23 华为技术有限公司 用于连接单板与电缆的电缆连接器和单板
CN103168427B (zh) * 2011-10-11 2014-12-03 华为技术有限公司 一种e1信号发送装置和接收装置
CN102751602A (zh) * 2012-06-27 2012-10-24 华为技术有限公司 E1电缆连接器、电缆类型检测电路板及方法
CN104469347B (zh) * 2014-12-08 2016-08-24 硅谷数模半导体（北京）有限公司 视频传输电缆的检测电路和视频输出芯片
CN104407259B (zh) * 2014-12-11 2016-08-17 长沙威胜信息技术有限公司 用电信息采集终端通信模块硬件id识别方法
CN111478127B (zh) 2020-04-17 2020-12-29 中国科学院地质与地球物理研究所 信号处理电路、非接触连接器、信号处理方法及存储介质

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CN1508983A (zh) * 2002-12-19 2004-06-30 华为技术有限公司 一种实现阻抗自动匹配的接口及其方法
JP2005130176A (ja) * 2003-10-23 2005-05-19 Toshiba Corp 携帯端末
CN101227032A (zh) * 2007-11-28 2008-07-23 华为技术有限公司 用于连接单板与电缆的电缆连接器和单板

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Publication number Priority date Publication date Assignee Title
EP3171480A4 (fr) * 2015-04-29 2018-01-31 Guangdong Oppo Mobile Telecommunications Corp., Ltd Procédé d'identification de types de câbles, adaptateur de puissance et câble
US10720778B2 (en) 2015-04-29 2020-07-21 Guangdong Oppo Mobile Telecommunications Corp., Ltd. Method for identifying type of cable, power adapter and cable

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