CN111522768A

CN111522768A - USB Type-C active cable

Info

Publication number: CN111522768A
Application number: CN202010550769.6A
Authority: CN
Inventors: 李旭东; 肖勇; 岳士丰
Original assignee: Silicon Valley Digital Analog Suzhou Semiconductor Co ltd; Analogix International LLC
Current assignee: Silicon Valley Analog Suzhou Semiconductor Co ltd; Analogix International LLC
Priority date: 2020-06-16
Filing date: 2020-06-16
Publication date: 2020-08-11
Anticipated expiration: 2040-06-16
Also published as: CN111522768B

Abstract

The application provides a USB Type-C active cable, which comprises a connector and a cable body, wherein a connector circuit of the connector comprises a data line, a CC1 line, a CC2 line, an E-mark chip and a repeater, the E-mark chip is electrically connected with a CC1 line, the E-mark chip is electrically connected with the CC2 line, the repeater is in communication connection with the data line and is used for performing signal compensation on signals transmitted by the data line, the signals are input into the repeater through the data line, the signal is reconstructed through the clock in the repeater, so that the signal transmission energy is increased, after the data recovery is realized, then the signal is sent out according to the serial channel and then is continuously transmitted, so that the jitter of the signal can be reduced, all signal attenuation of a front stage is compensated, the length of a high-speed signal line can be prolonged, and the long-distance transmission of the high-speed signal is realized.

Description

USB Type-C active cable

Technical Field

The application relates to the technical field of active cables, in particular to a USB Type-C active cable.

Background

USB Type-C (also called USB-C) is a new USB interface form, and supports the latest USB 3.2 standard. The fully functional USB-C cable can support single channel 10Gbps USB 3.2 Gen2 standard data throughput. Meanwhile, the system also supports the DisplayPort 1.4 standard, a cable supports four channels in each path of display output, and the data transmission rate of each channel can reach 8.1 Gbps. The length of the existing active USB Type-C cable is generally limited within 1m due to the ultra-high transmission rate, along with the fact that more and more audio-visual equipment and display equipment use USB-C interfaces as standard interfaces and rapid popularization of VR equipment, the application scene of the active USBType-C cable is rapidly increased, the length of 1m can not meet the requirement of the use scene far away, and the active USBType-C cable with the length of 2-5 m has wide requirements.

Because the USB-C standard develops relatively fast, there are two current situations in the active USB Type-C cable of present application:

1) the system supporting the active USB-C cable standard equipment and the active USB-C cable can realize information interaction between the equipment and the cable, and the standard specifies that after a USB-C host (or the equipment) identifies the active USB-C cable, the USB-C host (or the equipment) uses a message special for the cable to communicate with an E-mark chip on the active cable through a CC channel, and the cable is configured, so that the function conversion and extension of the cable are realized, and the cable can also obtain system working information as a connection in the system.

2) In the early period, a system consisting of equipment which does not support the standard of the active USB-C cable and the active USB-C cable cannot work normally, the active cable cannot be identified and cannot be subjected to communication configuration, and the function of the active cable cannot be realized.

The above information disclosed in this background section is only for enhancement of understanding of the background of the technology described herein and, therefore, certain information may be included in the background that does not form the prior art that is already known in this country to a person of ordinary skill in the art.

Disclosure of Invention

The main aim at of this application provides a USBType-C active cable to solve the problem that the active USBType-C cable among the prior art can't realize high-speed signal long distance transmission.

According to an aspect of an embodiment of the present invention, a USB Type-C active cable is provided, where the USB Type-C active cable includes a connector and a cable body, a connector circuit of the connector includes a data line, a CC1 line, a CC2 line, an E-mark chip, and a repeater, the E-mark chip is electrically connected to the CC1 line, the E-mark chip is electrically connected to the CC2 line, the repeater is communicatively connected to the data line, and the repeater is configured to perform signal compensation on a signal transmitted by the data line.

Optionally, the USB Type-C active cable includes two connectors, and when both the connectors are male connectors, a circuit of any one of the male connectors is the connector circuit; in the case where one of the connectors is a male connector and the other of the connectors is a female connector, the circuit of the female connector is the connector circuit.

Optionally, the E-mark chip includes: a monitoring module, configured to monitor communication information of the CC1 line and detect status information of the CC2 line, or detect status information of the CC1 line and monitor communication information of the CC2 line; and the control module is used for controlling the transmission direction and the working mode of the repeater according to the communication information and the state information, so that the repeater performs signal compensation on the signals transmitted by the data line.

Optionally, the repeater includes a first signal sequence and a second signal sequence, and when the connector is a female connector, the monitoring module is further configured to monitor a plugging direction of the female connector, where the plugging direction includes a forward plugging direction and a reverse plugging direction, and when the plugging direction is the forward plugging direction, the control module is configured to control the repeater to perform signal transmission by using the first signal sequence; and under the condition that the plugging direction is reverse plugging, the control module is used for controlling the repeater to adopt the second signal sequence to carry out signal transmission.

Optionally, in a case that the plugging direction is positive plugging, the monitoring module is configured to monitor communication information of the CC1 line and detect status information of the CC2 line; and under the condition that the plugging direction is reverse plugging, the monitoring module is used for detecting the state information of the CC1 line and monitoring the communication information of the CC2 line.

Optionally, the monitoring module comprises: a detection sub-module for detecting a voltage division level of the CC1 line and the CC2 line; and the determining submodule is used for determining the plugging direction according to the voltage division level.

Optionally, the voltage division level of the CC1 line is a first voltage division level, the voltage division level of the CC2 line is a second voltage division level, and in a case that the first voltage division level is greater than the second voltage division level, the determining submodule is configured to determine that the plugging direction is positive plugging; and the determining submodule is used for determining that the plugging direction is reverse plugging under the condition that the first voltage division level is smaller than the second voltage division level.

Optionally, the communication information further includes a command to switch transmission direction, the status information includes online and offline, and in a case that the status information of the CC1 line or the status information of the CC2 line is online, the control module is further configured to control the transmission direction of the repeater to be a first direction, where the first direction is a direction from the connector to the cable body; the control module is further configured to control a transmission direction of the repeater to be a second direction in a case that the state information of the CC1 line or the state information of the CC2 line is not on-line, the second direction being a direction from the cable body to the joint; the control module is further configured to switch the transmission direction of the repeater between the first direction and the second direction upon detection of the switch transmission direction command.

Optionally, the working mode includes a USB transmission mode, a DP transmission mode, and a USB + DP transmission mode, the communication information includes a DP mode command and a DP configuration command, and if the DP mode command is negative, the control module is configured to control the working mode of the relay to be the USB transmission mode; the control module is used for controlling the working mode of the repeater to be the DP transmission mode under the condition that the DP mode command is yes and the DP configuration command is in a first video mode; and under the condition that the DP mode command is yes and the DP configuration command is in a second video mode, the control module is used for controlling the working mode of the repeater to be the USB + DP transmission mode.

Optionally, the repeater is a re-timer chip.

In the embodiment of the present invention, in the active cable, the E-mark chip monitors communication information of the CC1 line or the CC2 line to control the repeater to operate, so that the repeater performs signal compensation on a signal transmitted by the data line, the signal is input into the repeater through the data line, the signal transmission energy is increased by reconstructing the signal through a clock inside the repeater, the data is recovered, then the signal is sent out according to a serial channel, and then the transmission is continued, which can reduce jitter of the signal, which is equivalent to compensating all signal attenuations of a preceding stage, so that the length of a high-speed signal line can be extended, and long-distance transmission of the high-speed signal can be realized.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application. In the drawings:

FIG. 1 illustrates a schematic diagram of a connector circuit of a USB Type-C active cable according to one embodiment of the present application;

FIG. 2(a) is a schematic circuit diagram of a forward plug in USB transmission mode according to an embodiment of the present application;

FIG. 2(b) is a schematic circuit diagram illustrating reverse insertion in a USB transmission mode according to an embodiment of the present application;

FIG. 3(a) is a circuit diagram illustrating forward insertion and a second transmission direction in a DP transmission mode according to an embodiment of the present disclosure;

FIG. 3(b) is a schematic circuit diagram illustrating a circuit for reverse insertion in a DP transmission mode according to an embodiment of the present disclosure and with a transmission direction in a second direction;

FIG. 4(a) is a schematic diagram of a circuit that is being inserted in a DP transmission mode according to an embodiment of the present disclosure and has a first transmission direction;

FIG. 4(b) is a schematic diagram of a circuit with reverse insertion in DP transmission mode and a first transmission direction according to an embodiment of the present disclosure;

FIG. 5(a) is a circuit diagram illustrating a forward insertion and a second transmission direction in the USB + DP transmission mode according to an embodiment of the present disclosure;

FIG. 5(b) is a schematic circuit diagram illustrating a reverse insertion in the USB + DP transmission mode and a transmission direction in a second direction according to an embodiment of the present disclosure;

FIG. 6(a) is a schematic circuit diagram illustrating a forward insertion in a USB + DP transmission mode according to an embodiment of the present disclosure, wherein the transmission direction is a first direction;

FIG. 6(b) is a schematic circuit diagram illustrating a reverse insertion in the USB + DP transmission mode and a transmission direction in the first direction according to an embodiment of the present disclosure; and

FIG. 7 illustrates a partial circuit schematic of an active cable connected USB device according to one embodiment of the present application.

Wherein the figures include the following reference numerals:

01. a plug; 02. a socket; 03. a voltage monitor; 10. a data line; 11. a first channel; 12. a second channel; 13. a third channel; 14. a fourth channel; 15. a fifth channel; 16. a sixth channel; 20. a CC1 line; 30. a CC2 line; 40. e-mark chip; 50. a repeater; 60. a VBUS line; 70. a cable body; 71. and a cable CC line.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

It will be understood that when an element such as a layer, film, region, or substrate is referred to as being "on" another element, it can be directly on the other element or intervening elements may also be present. Also, in the specification and claims, when an element is described as being "connected" to another element, the element may be "directly connected" to the other element or "connected" to the other element through a third element.

For convenience of description, some terms or expressions referred to in the embodiments of the present application are explained below:

CC1 line/CC 2 line (Configuration Channel): a configuration channel which is a key channel newly added in the USB Type-C and has the functions of detecting USB connection, detecting positive and negative insertion, and establishing and managing the connection between data and VBUS between USB devices;

e-mark chip: the intelligent identification chip is used for monitoring communication information of the CC line so as to detect USB connection and detect positive and negative insertion;

VBUS line: a power cord to supply power to the USB device.

As mentioned in the background, the active USB Type-C cable in the prior art cannot realize high-speed long-distance signal transmission, and in order to solve the above problem, in an exemplary embodiment of the present application, a USB Type-C active cable is provided.

According to an embodiment of the application, a USB Type-C active cable is provided that includes a splice and a cable body.

FIG. 1 is a schematic diagram of a connector circuit of a USB Type-C active cable according to an embodiment of the present application. As shown in fig. 1, the connector circuit of the connector includes a data line 10, a CC1 line 20, a CC2 line 30, an E-mark chip 40, and a repeater 50, wherein the E-mark chip 40 is electrically connected to the CC1 line 20, the E-mark chip 40 is electrically connected to the CC2 line 30, the repeater 50 is communicatively connected to the data line 10, and the repeater 50 is configured to compensate a signal transmitted through the data line 10.

In the active cable, the E-mark chip monitors communication information of the CC1 line or the CC2 line to control the repeater to work, so that the repeater performs signal compensation on signals transmitted by the data line, the signals are input into the repeater through the data line, the signals are reconstructed through a clock inside the repeater, the signal transmission energy is increased, the data recovery is realized, then the signals are sent out according to a serial channel, and then the transmission is continued, the jitter of the signals can be reduced, which is equivalent to compensating all signal attenuation of a front stage, and thus the length of a high-speed signal line can be prolonged, and the long-distance transmission of the high-speed signals is realized.

It should be noted that, as shown in fig. 1, the connector circuit further includes a power line, i.e., a VBUS line 60, for supplying power to the USB device through the connector.

In one embodiment of the present application, the USB Type-C active cable includes two connectors, and when both of the connectors are male connectors, that is, the active cable is a long wire, the circuit of any one of the male connectors is the connector circuit; in a case where one of the connectors is a male connector and the other connector is a female connector, the active cable is an extension line, and the circuit of the female connector is the connector circuit. Specifically, the active cable is a long cable, the connector circuit does not need to detect the positive and negative insertion of the connector, the repeater may be disposed on any one of the circuits of the male connector, that is, any one of the circuits of the male connector is the connector circuit, the active cable is an extension cable, the circuit of the female connector needs to detect the positive and negative insertion of the connector to control the signal sequence of the repeater, and the repeater is disposed on the circuit of the female connector, that is, the circuit of the female connector is the connector circuit.

In an embodiment of the application, the E-mark chip includes a monitoring module and a control module, wherein the monitoring module is configured to monitor communication information of the CC1 line and detect status information of the CC2 line, or detect status information of the CC1 line and monitor communication information of the CC2 line; the control module is used for controlling the transmission direction and the working mode of the repeater according to the communication information and the state information, so that the repeater performs signal compensation on the signals transmitted by the data line. Specifically, the cable body includes a cable CC line, the CC1 line is used to transmit communication information when the cable CC line is connected to the CC1 line, the CC2 line supplies power to the E-mark chip as Vconn, the monitoring module monitors the communication information of the CC1 line and detects state information of the CC2 line, the CC2 line is used to transmit communication information when the cable CC line is connected to the CC2 line, the CC1 line supplies power to the E-mark chip as Vconn, the monitoring module monitors the communication information of the CC2 line and detects state information of the CC1 line, and the control module controls a transmission direction and an operation mode of the repeater according to the communication information and the state information so that the repeater compensates signals transmitted by the data line.

It should be noted that the monitoring module can also realize that the USB-C device communicates with the active cable, so that the USB-C device can identify the active cable and perform communication configuration on the active cable, thereby solving the problem that the old version USB-C device does not support the active cable, and expanding the use scenario of the USB Type-C active cable.

In an embodiment of the present application, the repeater includes a first signal sequence and a second signal sequence, and in a case where the connector is a female connector, the monitoring module is further configured to monitor a plugging direction of the female connector, where the plugging direction includes a forward plugging direction and a reverse plugging direction, and in a case where the plugging direction is the forward plugging direction, the control module is configured to control the repeater to perform signal transmission by using the first signal sequence; and under the condition that the plugging direction is reverse plugging, the control module is used for controlling the repeater to transmit signals by adopting the second signal sequence. Specifically, the signal sequences corresponding to the first signal sequence and the second signal sequence are different, and the corresponding signal sequences are selected for transmission under the two conditions that the plugging direction of the female head is positive plugging and negative plugging by the method, so that the repeater can perform signal compensation on the signals under the two conditions.

It should be noted that, as shown in fig. 2 to 6, the insertion direction of the female connector is denoted by FLIP, when the insertion direction is a forward insertion, FLIP is 0, the repeater performs signal transmission by using the first signal sequence, in the DP transmission mode and the DP + USB transmission mode, USBU1 is connected to DSBU1, USBU2 is connected to DSBU2, in the USB transmission mode, neither DSBU1 nor DSBU2 is connected to USBU1, neither DSBU1 nor DSBU2 is connected to USBU2, in the reverse insertion direction, FLIP is 1, the repeater performs signal transmission by using the second signal sequence, in the DP transmission mode and the DP + USB transmission mode, us 1 is connected to DSBU1, neither USBU2 is connected to DSBU2, and in the USB transmission mode, neither DSBU1 nor DSBU2 is connected to DSBU 36356, nor DSBU 3673727.

In an embodiment of the present application, when the plugging direction is positive plugging, the monitoring module is configured to monitor communication information of the CC1 line and detect status information of the CC2 line; when the plugging direction is reverse plugging, the monitoring module is configured to detect status information of the CC1 line and monitor communication information of the CC2 line. Specifically, when the plugging direction is the forward plugging direction, the cable CC line is connected to the CC1 line, the CC1 line is used to transmit communication information, the CC2 line supplies power to the E-mark chip as Vconn, the monitoring module monitors the communication information of the CC1 line and detects the state information of the CC2 line, when the plugging direction is the reverse plugging direction, the cable CC line is connected to the CC2 line, the CC2 line is used to transmit communication information, the CC1 line supplies power to the E-mark chip as Vconn, and the monitoring module monitors the communication information of the CC2 line and detects the state information of the CC1 line.

In an embodiment of the present application, the monitoring module includes a detection submodule and a determination submodule, wherein the detection submodule is configured to detect voltage division levels of the CC1 line and the CC2 line; the determining submodule is used for determining the plugging direction according to the voltage division level. Specifically, as shown in fig. 7, the cable body 70 includes a cable CC wire 71, a voltage monitor 03 is disposed on the CC1 wire 20 and the CC2 wire 30, and the cable CC wire 71 is connected to the CC1 wire 20, or the cable CC wire 71 is connected to the CC2 wire 30, which results in different voltage division levels of the CC1 wire 20 and the CC2 wire 30, so as to determine whether the cable CC wire 71 is connected to the CC1 wire 20 or the CC2 wire 30, and further determine the plugging direction.

In an embodiment of the present application, the voltage division level of the CC1 line is a first voltage division level, the voltage division level of the CC2 line is a second voltage division level, and the determining submodule is configured to determine that the plugging direction is positive plugging when the first voltage division level is greater than the second voltage division level; the determining submodule is configured to determine that the plugging direction is reverse plugging if the first division level is smaller than the second division level. Specifically, in the first case, the cable CC line 71 is connected to the CC1 line 20, the CC2 line 30 is grounded via Ra, as shown in fig. 7, the voltage division level of the CC1 line 20 is greater than the voltage division level of the CC2 line 30, that is, the first voltage division level is greater than the second voltage division level, the plugging direction is forward plugging, in the second case, the cable CC line 71 is connected to the CC2 line 30, the CC1 line 20 is grounded via Ra, the voltage division level of the CC1 line 20 is less than the voltage division level of the CC2 line 30, that is, the first voltage division level is less than the second voltage division level, and the plugging direction is reverse plugging.

In an embodiment of the present application, the communication information further includes a command for switching a transmission direction, the status information includes an online status and an offline status, and the control module is further configured to control the transmission direction of the repeater to be a first direction when the status information of the CC1 line or the status information of the CC2 line is online, the first direction being a direction from the connector to the cable body; the control module is further configured to control a transmission direction of the repeater to be a second direction when the state information of the CC1 line or the state information of the CC2 line is not on-line, the second direction being a direction from the cable body to the connector; the control module is further configured to switch the transmission direction of the repeater between the first direction and the second direction when the command for switching the transmission direction is detected. Specifically, the detection module detects a switching transmission direction command and state information of the CC1 line or state information of the CC2 line, that is, detects whether the switching transmission direction command and Vconn are on-line, and determines a signal transmission direction according to the two information, thereby matching the transmission direction of the repeater with the signal transmission direction.

It should be noted that the direction of transmission is denoted by SWAP, where SWAP is 1, i.e., the direction from the connector to the cable body, when the direction of transmission is the first direction, SWAP is 0, i.e., the direction from the cable body to the connector, when the direction of transmission is the female direction, i.e., the first direction is the direction from the socket 02 to the plug 01, as shown in fig. 2 to 6, when the direction of transmission is the second direction, i.e., the direction from the cable body to the connector, and when the connector is the female direction, i.e., the second direction is the direction from the plug 01 to the socket 02, as shown in fig. 2 to 6.

In an embodiment of the application, the working modes include a USB transmission mode, a DP transmission mode and a USB + DP transmission mode, the communication information includes a DP mode command and a DP configuration command, and if the DP mode command is negative, the control module is configured to control the working mode of the relay to be the USB transmission mode; the control module is configured to control the working mode of the repeater to be the DP transmission mode if the DP mode command is yes and the DP configuration command is the first video mode; the control module is configured to control the operating mode of the repeater to be the USB + DP transmission mode if the DP mode command is yes and the DP configuration command is the second video mode. Specifically, the three working modes, i.e., the USB transmission mode, the DP transmission mode and the USB + DP transmission mode, may transmit data signals of different formats, select a corresponding working mode according to the data signals of different formats, and send a corresponding DP mode command and DP configuration command, where the control module controls the repeater to adjust to the corresponding working mode according to the command.

When the operating mode is the USB transmission mode, as shown in fig. 2(a), the plug direction is the positive plug, that is, the FLIP is 0, the transmission is performed using the first channel 11 and the second channel 12, the SWAP is 0, the transmission direction is the direction from the plug 01 to the socket 02, the SWAP is 1, and the transmission direction is the direction from the socket 02 to the plug 01; as shown in fig. 2(b), the plugging direction is reverse plugging, that is, the FLIP is 1, the third channel 13 and the fourth channel 14 are used for transmission, the SWAP is 0, the transmission direction is the direction from the plug 01 to the socket 02, the SWAP is 1, the transmission direction is the direction from the socket 02 to the plug 01, wherein the fifth channel 15 and the sixth channel 16 are vulgar auxiliary channels, and the USB transmission mode is not used.

It should be noted that, when the operating mode is the DP transmission mode, the first channel 11, the second channel 12, the third channel 13, and the fourth channel 14 are used for high-speed transmission, and the fifth channel 15 and the sixth channel 16 are used for low-speed transmission, as shown in fig. 3(a), the plugging direction is forward, that is, the FLIP is 0, the signal transmission channels are the fourth channel 14, the third channel 13, the first channel 11, and the second channel 12 in sequence, the SWAP is 0, and the transmission direction is the direction from the plug 01 to the socket 02; as shown in fig. 3(b), the plugging direction is reverse plugging, that is, FLIP is 1, the order of the signal transmission channels is a first channel 11, a second channel 12, a fourth channel 14 and a third channel 13, SWAP is 0, and the transmission direction is from the plug 01 to the socket 02; as shown in fig. 4(a), the plugging direction is positive, that is, the FLIP is 0, the signal transmission channels are in the order of the third channel 13, the fourth channel 14, the second channel 12 and the first channel 11, SWAP is 1, and the transmission direction is from the socket 02 to the plug 01; as shown in fig. 4(b), the plugging direction is reverse plugging, i.e., FLIP is 1, the signal transmission channels are in the order of the second channel 12, the first channel 11, the third channel 13, and the fourth channel 14, SWAP is 1, and the transmission direction is from the socket 02 to the plug 01.

It should be further noted that, when the operating mode is the USB + DP transmission mode, the USB transmission mode uses the third channel 13 and the fourth channel 14 for high-speed transmission, the DP transmission mode uses the first channel 11 and the second channel 12 for high-speed transmission, and uses the fifth channel 15 and the sixth channel 16 for low-speed transmission, as shown in fig. 5(a), the plugging direction is positive, that is, the FLIP is 0, the signal transmission channels are in the order of the third channel 13, the fourth channel 14, the first channel 11 and the second channel 12, the SWAP is 0, and the transmission direction is the direction from the plug 01 to the socket 02; as shown in fig. 5(b), the plugging direction is reverse plugging, that is, FLIP is 1, the order of the signal transmission channels is a first channel 11, a second channel 12, a third channel 13 and a fourth channel 14, SWAP is 0, and the transmission direction is from the plug 01 to the socket 02; as shown in fig. 6(a), the plugging direction is positive, that is, the FLIP is 0, the signal transmission channels are in the order of the third channel 13, the fourth channel 14, the second channel 12 and the first channel 11, the SWAP is 1, and the transmission direction is from the socket 02 to the plug 01; as shown in fig. 6(b), the plugging direction is reverse plugging, i.e., FLIP is 1, the signal transmission channels are in the order of the second channel 12, the first channel 11, the third channel 13, and the fourth channel 14, SWAP is 1, and the transmission direction is from the socket 02 to the plug 01.

In an embodiment of the present application, the repeater is a re-timer chip. In particular, the re-timer chip can effectively compensate the loss of 23dB of high-speed signals under the condition of meeting the highest USB3.1Gen2 rate, and the active cable can be prolonged to 5 meters. Of course, the above-mentioned repeater is not limited thereto, and those skilled in the art can select an appropriate repeater according to actual situations.

From the above description, it can be seen that the above-described embodiments of the present application achieve the following technical effects:

in the active cable, the E-mark chip monitors communication information of a CC1 line or a CC2 line to control the repeater to work, so that the repeater performs signal compensation on signals transmitted by a data line, the signals are input into the repeater through the data line, the signals are reconstructed through a clock inside the repeater, the signal transmission energy is increased, the signals are sent out according to a serial channel after the data are recovered, and then the signals are continuously transmitted, the jitter of the signals can be reduced, namely all signal attenuation of a front stage is compensated, the length of a high-speed signal line can be prolonged, and long-distance transmission of the high-speed signals is realized.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. The utility model provides a USBType-C active cable, its characterized in that, USBType-C active cable includes joint and cable body, the joint circuit of joint includes data line, CC1 line, CC2 line, E-mark chip and repeater, the E-mark chip with CC1 line electricity is connected, just the E-mark chip with CC2 line electricity is connected, the repeater with data line communication connection, the repeater is used for carrying out signal compensation to the signal of data line transmission.

2. The active cable of claim 1, wherein the USB Type-C active cable comprises two taps,

under the condition that the two connectors are both male connectors, a circuit of any one male connector is the connector circuit;

in the case where one of the connectors is a male connector and the other of the connectors is a female connector, the circuit of the female connector is the connector circuit.

3. The active cable of claim 1, wherein the E-mark chip comprises:

a monitoring module, configured to monitor communication information of the CC1 line and detect status information of the CC2 line, or detect status information of the CC1 line and monitor communication information of the CC2 line;

and the control module is used for controlling the transmission direction and the working mode of the repeater according to the communication information and the state information, so that the repeater performs signal compensation on the signals transmitted by the data line.

4. The active cable of claim 3, wherein the repeater includes a first signal sequence and a second signal sequence,

under the condition that the connector is a female connector, the monitoring module is also used for monitoring the plugging direction of the female connector, the plugging direction comprises a forward plugging direction and a reverse plugging direction,

under the condition that the plugging direction is positive plugging, the control module is used for controlling the repeater to adopt the first signal sequence to carry out signal transmission;

and under the condition that the plugging direction is reverse plugging, the control module is used for controlling the repeater to adopt the second signal sequence to carry out signal transmission.

5. The active cable of claim 4,

when the plugging direction is positive plugging, the monitoring module is used for monitoring communication information of the CC1 line and detecting state information of the CC2 line;

and under the condition that the plugging direction is reverse plugging, the monitoring module is used for detecting the state information of the CC1 line and monitoring the communication information of the CC2 line.

6. The active cable of claim 4, wherein the monitoring module comprises:

a detection sub-module for detecting a voltage division level of the CC1 line and the CC2 line;

and the determining submodule is used for determining the plugging direction according to the voltage division level.

7. The active cable of claim 6, wherein the voltage division level of the CC1 line is a first voltage division level, the voltage division level of the CC2 line is a second voltage division level,

the determining submodule is used for determining that the plugging direction is positive plugging under the condition that the first voltage division level is greater than the second voltage division level;

and the determining submodule is used for determining that the plugging direction is reverse plugging under the condition that the first voltage division level is smaller than the second voltage division level.

8. The active cable of claim 4, wherein the communication information further includes a switch transmission direction command, wherein the status information includes online and offline,

the control module is further configured to control a transmission direction of the repeater to be a first direction in a case where the state information of the CC1 line or the state information of the CC2 line is on-line, the first direction being a direction from the joint to the cable body;

the control module is further configured to control a transmission direction of the repeater to be a second direction in a case that the state information of the CC1 line or the state information of the CC2 line is not on-line, the second direction being a direction from the cable body to the joint;

the control module is further configured to switch the transmission direction of the repeater between the first direction and the second direction upon detection of the switch transmission direction command.

9. The active cable of claim 4, wherein the operating modes include a USB transfer mode, a DP transfer mode, and a USB + DP transfer mode, wherein the communication information includes a DP mode command and a DP configuration command,

under the condition that the DP mode command is negative, the control module is used for controlling the working mode of the repeater to be the USB transmission mode;

the control module is used for controlling the working mode of the repeater to be the DP transmission mode under the condition that the DP mode command is yes and the DP configuration command is in a first video mode;

and under the condition that the DP mode command is yes and the DP configuration command is in a second video mode, the control module is used for controlling the working mode of the repeater to be the USB + DP transmission mode.

10. The active cable of any one of claims 1 to 9, wherein the repeater is a re-timer chip.