Burst transmission signal adjusting circuit, method, device, chip and electronic equipment
By combining a driver, a regulating module, and a coupling capacitor module, the distortion and bit error problems of burst transmission signals in PON systems are solved, achieving accurate signal transmission and speed improvement, and optimizing code performance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SHENZHEN PANGO MICROSYST CO LTD
- Filing Date
- 2023-10-09
- Publication Date
- 2026-08-04
AI Technical Summary
The burst transmission characteristics of the serial receiver signal of the OLT in the PON system cause a mismatch between the output common mode and the input common mode of the FPGA or ASIC, introducing distortion and bit errors. In the existing technology, the AC coupling capacitor cannot take into account both distortion and inter-symbol interference.
By employing a combination of a driver, a regulating module, and a coupling capacitor module, the conduction state of the driver and the coupling capacitor module is controlled during the protection interval, and common-mode matching is performed to avoid signal distortion and bit errors.
It effectively avoids distortion and bit errors in burst transmission signals during transmission, improves the accuracy and speed of signal transmission, optimizes the preamble length, and improves the performance of the PRBS31 code pattern.
Smart Images
Figure CN117478211B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of serial communication technology, and in particular to a burst transmission signal conditioning circuit, method, apparatus, chip, and electronic device. Background Technology
[0002] In a PON (Passive Optical Network), the serial receiver signal of the OLT (Optical Line Terminal) exhibits burst transmission characteristics. However, the common mode output of the optical module or LA (Limiting Amplifier) often does not match the common mode input of the serial receiver of the FPGA (Field Programmable Gate Array) or ASIC (Application Specific Integrated Circuit). Therefore, the output common mode needs to be input to the FPGA and ASIC through an AC coupling capacitor. However, the AC coupling capacitor inevitably introduces preamble distortion into the burst transmission signal. The larger the AC coupling capacitor, the more distortion occurs, while a smaller AC coupling capacitor can cause inter-symbol interference, leading to bit errors. Summary of the Invention
[0003] The purpose of this invention is to provide a burst transmission signal conditioning circuit, method, device, chip, and electronic device to solve the technical problems of distortion and bit error rate of burst transmission signals in the prior art.
[0004] The technical solution of the present invention is as follows: a burst transmission signal conditioning circuit is provided, including a driver, a conditioning module and a coupling capacitor module;
[0005] The driver is used to receive a first burst transmission signal, drive the first burst transmission signal to obtain a second burst transmission signal;
[0006] The adjustment module is used to input the second burst transmission signal to the coupling capacitor module when the second burst transmission signal is received, and is also used to prevent the driver from conducting with the coupling capacitor module during the protection interval between every two second burst transmission signals.
[0007] The coupling capacitor module is used to perform common-mode matching processing on the second burst transmission signal after receiving the second burst transmission signal, so as to obtain the burst transmission signal after common-mode matching processing.
[0008] Furthermore, the burst transmission signal conditioning circuit also includes a serial receiver, which is used to receive the burst transmission signal after the common-mode matching processing.
[0009] Furthermore, the adjustment module includes a first switching circuit, which is connected to the driver and the coupling capacitor module respectively. The first switching circuit is used to turn on the driver and the coupling capacitor module when a second burst transmission signal is received, so that the second burst transmission signal is input to the coupling capacitor module. It is also used to turn off the driver and the coupling capacitor module during the protection interval between every two second burst transmission signals.
[0010] Furthermore, the first switching circuit includes a first switching element and a second switching element. The first end of the first switching element is connected to the first end of the driver, the second end of the first switching element is connected to the first end of the coupling capacitor module, the first end of the second switching element is connected to the second end of the driver, and the second end of the second switching element is connected to the second end of the coupling capacitor module.
[0011] Furthermore, the adjustment module also includes a second switching circuit, which receives the output common-mode voltage of the driver and is also connected to the coupling capacitor module. The second switching circuit is used to prevent the output common-mode voltage from being input to the coupling capacitor module when the first switching circuit receives a second burst transmission signal, and is also used to allow the output common-mode voltage to be input to the coupling capacitor module during the guard interval between every two second burst transmission signals.
[0012] Furthermore, the second switching circuit also includes a third switching element and a fourth switching element, wherein the first terminal of the third switching element and the first terminal of the fourth switching element are respectively connected to the output common-mode voltage, and the second terminal of the third switching element and the second terminal of the fourth switching element are respectively connected to the coupling capacitor module.
[0013] Another technical solution of the present invention is as follows: An embodiment of the present invention provides a method for adjusting burst transmission signals, comprising:
[0014] The first burst transmission signal is limited by the driver to obtain the second burst transmission signal;
[0015] The second burst transmission signal is input to the coupling capacitor module, and during the protection interval between every two second burst transmission signals, the driver and the coupling capacitor module are not connected.
[0016] After receiving the second burst transmission signal, common-mode matching processing is performed on the second burst transmission signal to obtain the common-mode matching processed burst transmission signal.
[0017] Another technical solution of the present invention is as follows: an embodiment of the present invention provides a burst transmission signal conditioning device, including the burst transmission signal conditioning circuit as described in any of the above technical solutions.
[0018] Another technical solution of the present invention is as follows: an embodiment of the present invention provides a chip, including the burst transmission signal conditioning circuit as described in any of the above technical solutions.
[0019] Another technical solution of the present invention is as follows: An embodiment of the present invention provides an electronic device, including a burst transmission signal conditioning circuit as described in any of the above technical solutions.
[0020] The beneficial effects of this invention are as follows: The driver receives a first burst transmission signal and processes it to obtain a second burst transmission signal; the adjustment module, upon receiving the second burst transmission signal, inputs it to the coupling capacitor module, and during the protection interval between every two second burst transmission signals, keeps the driver and the coupling capacitor module from conducting; the coupling capacitor module, upon receiving the second burst transmission signal, performs common-mode matching processing on it to obtain a common-mode matched burst transmission signal; this avoids distortion and bit errors in the transmission of burst transmission signals, improving the accuracy of burst transmission signal transmission. Attached Figure Description
[0021] Figure 1 This is a first structural schematic diagram of the burst transmission signal conditioning circuit provided in an embodiment of the present invention;
[0022] Figure 2 This is a schematic diagram of the passive optical network provided in an embodiment of the present invention;
[0023] Figure 3 A schematic diagram of a burst transmission signal provided in an embodiment of the present invention;
[0024] Figure 4 A schematic diagram of the signal changes across the coupling capacitor module from idle state to burst state provided in an embodiment of the present invention;
[0025] Figure 5 This is a schematic diagram of the second structure of the burst transmission signal conditioning circuit provided in an embodiment of the present invention;
[0026] Figure 6 A schematic diagram of the third structure of the burst transmission signal conditioning circuit provided in an embodiment of the present invention;
[0027] Figure 7 This is a schematic diagram of the voltage change before the AC coupling capacitor provided in an embodiment of the present invention;
[0028] Figure 8 This is a schematic diagram of the voltage change after the AC coupling capacitor provided in an embodiment of the present invention;
[0029] Figure 9 This is a schematic diagram of the differential-mode signal change after the AC coupling capacitor provided in an embodiment of the present invention;
[0030] Figure 10 This is a schematic diagram of the single-ended waveform after adjustment by the adjustment module, provided in an embodiment of the present invention.
[0031] Figure 11 This is a schematic diagram of the single-ended waveform after passing through the coupling capacitor module, provided in an embodiment of the present invention.
[0032] Figure 12 This is a schematic diagram of the differential signal after passing through the coupling capacitor module, provided in an embodiment of the present invention.
[0033] Figure 13 This is a schematic diagram showing a partial detail of the differential signal after passing through the coupling capacitor module, provided in an embodiment of the present invention.
[0034] Figure 14 This is a flowchart illustrating the burst transmission signal adjustment method provided in an embodiment of the present invention. Detailed Implementation
[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.
[0036] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.
[0037] Figure 1 This is a first structural schematic diagram of the burst transmission signal conditioning circuit according to an embodiment of the present invention. It should be noted that, if substantially the same result is achieved, the burst transmission signal conditioning circuit of the present invention does not differ in its approach. Figure 1 The illustrated process sequence is limited. For example... Figure 1 As shown, the burst transmission signal conditioning circuit 100 includes a driver 110, a conditioning module 120, and a coupling capacitor module 130.
[0038] The driver 110 is used to receive a first burst transmission signal, drive the first burst transmission signal to obtain a second burst transmission signal.
[0039] The driving process may include gain processing. The driver 110 includes a limiting amplifier LA. The first burst transmission signal received by the driver 110 is a voltage signal. After the voltage signal is driven by the driver 110, it is amplified to obtain a second burst transmission signal.
[0040] The adjustment module 120 is used to input the second burst transmission signal to the coupling capacitor module 130 when the second burst transmission signal is received, and is also used to prevent the driver 110 from conducting with the coupling capacitor module 130 during the protection interval between every two second burst transmission signals.
[0041] The coupling capacitor module 130 is used to perform common-mode matching processing on the second burst transmission signal after receiving the second burst transmission signal, so as to obtain the burst transmission signal after common-mode matching processing.
[0042] In this embodiment of the invention, the driver 110 receives a first burst transmission signal and performs driving processing on the first burst transmission signal to obtain a second burst transmission signal. The adjustment module 120, upon receiving the second burst transmission signal, inputs the second burst transmission signal to the coupling capacitor module 130. During the protection interval between every two second burst transmission signals, the driver 110 and the coupling capacitor module 130 are not connected. The coupling capacitor module 130, upon receiving the second burst transmission signal, performs common-mode matching processing on the second burst transmission signal to obtain a common-mode matched burst transmission signal. This avoids distortion and bit errors in the burst transmission signal during transmission, improving the accuracy of burst transmission signal transmission.
[0043] A schematic diagram of the passive optical network in one specific embodiment is shown below. Figure 2 As shown, the optical line terminal (OLT) can receive uplink data from the optical network unit (ONU) in time slots. The ONU transmits one uplink data segment to the OLT in each time slot. The uplink data can be transmitted in the form of optical signals. The strength of the burst transmission signal (first burst transmission signal) from the ONU to the OLT varies depending on the distance between the ONU and the OLT. To minimize signal distortion from the transimpedance amplifier to the limiting amplifier, there is a guard time between every two burst transmission signals. This guard time can be called the idle state. The time it takes for the burst transmission signal to reach the limiting amplifier can be called the burst state. A schematic diagram of the burst transmission signal is shown below. Figure 3 As shown, the driver 110 typically outputs a fixed logic in the idle state, namely 0 or 1.
[0044] A schematic diagram of the signal change across the coupling capacitor module 130 from idle state to burst state, as shown below. Figure 4 As shown, the coupling capacitor module 130 can be an AC coupling capacitor. Figure 4 The two curves represent the signal changes across the coupling capacitor module 130. Since the driver 110 outputs a fixed logic 0 or 1 in the idle state, the DC voltage on one side of the AC coupling capacitor is fixed at a logic level of 0 or 1. After the burst output signal (the second burst output signal) arrives, the voltage on the AC coupling capacitor becomes the common-mode voltage Vcom of the driver 110 or the limiting amplifier. From the idle state to the burst state, the DC common-mode voltage at the first (P) and second (N) terminals of the AC coupling capacitor changes by ±0.5Vpp, where Vpp is the single-ended swing of the P and N terminals. Because the voltage across the AC coupling capacitor cannot change abruptly, there is a slow charging and discharging process with a charging / discharging time of τ = RC. The curve satisfies e -t / τ .
[0045] In some embodiments, the burst transmission signal conditioning circuit further includes a serial receiver for receiving the burst transmission signal after common-mode matching processing.
[0046] In one specific embodiment, the serial receiver, as part of a serializer / deserializer, is used to receive burst transmission signals, and the serial receiver is disposed in a field-programmable gate array or an application-specific integrated circuit.
[0047] In some embodiments, the adjustment module 120 includes a first switching circuit, which is connected to the driver 110 and the coupling capacitor module 130 respectively. The first switching circuit is used to turn on the driver 110 and the coupling capacitor module 130 when a second burst transmission signal is received, so that the second burst transmission signal is input to the coupling capacitor module 130. It is also used to turn off the driver 110 and the coupling capacitor module 130 during the protection interval between every two second burst transmission signals.
[0048] In this embodiment of the invention, by connecting the first switching circuit to the driver 110 and the coupling capacitor module 130 respectively, when the first switching circuit receives the second burst transmission signal, it turns on the driver 110 and the coupling capacitor module 130 so that the second burst transmission signal is input to the coupling capacitor module 130, thus ensuring the normal transmission of the second burst transmission signal. During the protection interval between every two second burst transmission signals, the driver 110 and the coupling capacitor module 130 are turned off to ensure that the voltage signal across the coupling capacitor module 130 does not change significantly after the arrival of the second burst transmission signal, thus preventing the generation of additional common-mode signals and avoiding preamble distortion and bit errors.
[0049] It should be noted that during the protection interval between every two second burst transmission signals, when the driver 110 and the coupling capacitor module 130 are not conducting, the output level of the driver 110 will not be input to the coupling capacitor module 130. The first and second terminals of the driver 110 will leak current simultaneously, but the leakage current will not affect the differential signal, and the differential signal will cancel out the leakage current.
[0050] In some embodiments, the first switching circuit includes a first switching element and a second switching element. A first end of the first switching element is connected to a first end of the driver 110, a second end of the first switching element is connected to a first end of the coupling capacitor module 130, a first end of the second switching element is connected to a second end of the driver 110, and a second end of the second switching element is connected to a second end of the coupling capacitor module 130.
[0051] In this embodiment of the invention, the first switching element and the second switching element can be used to enable the driver 110 to conduct with the coupling capacitor module 130 when a second burst transmission signal is received, so that the second burst transmission signal is input to the coupling capacitor module 130. During the protection interval between every two second burst transmission signals, the driver 110 and the coupling capacitor module 130 are not connected.
[0052] In one specific embodiment, a second structural schematic diagram of the burst transmission signal conditioning circuit is shown, as follows: Figure 5 As shown. Figure 5 In this circuit, k1 and k2 are the first and second switching elements, respectively. When a second burst transmission signal is received, the first switching element k1 and the second switching element k2 close, causing the driver 110 to conduct with the coupling capacitor module 130. During the protection interval between every two second burst transmission signals, the first switching element k1 and the second switching element k2 open.
[0053] In some embodiments, the adjustment module 120 further includes a second switching circuit, which receives the output common-mode voltage of the driver 110 and is also connected to the coupling capacitor module 130. The second switching circuit is used to prevent the output common-mode voltage from being input to the coupling capacitor module 130 when the first switching circuit receives a second burst transmission signal, and is also used to allow the output common-mode voltage to be input to the coupling capacitor module 130 during the protection interval between every two second burst transmission signals.
[0054] In this embodiment of the invention, the output common-mode voltage of the driver 110 is received by the second switching circuit, which is connected to the coupling capacitor module 130. When the first switching circuit receives the second burst transmission signal, the second switching circuit prevents the output common-mode voltage from being input to the coupling capacitor module 130 to ensure the normal transmission of the second burst transmission signal. During the protection interval between every two second burst transmission signals, the output common-mode voltage is input to the coupling capacitor module 130 to ensure that the voltage signal across the coupling capacitor module 130 does not change after the arrival of the second burst transmission signal, thus preventing the generation of additional common-mode signals and avoiding preamble distortion and bit errors.
[0055] In some embodiments, the second switching circuit further includes a third switching element and a fourth switching element, wherein the first terminal of the third switching element and the first terminal of the fourth switching element are respectively connected to the output common-mode voltage, and the second terminal of the third switching element and the second terminal of the fourth switching element are respectively connected to the coupling capacitor module 130.
[0056] In this embodiment of the invention, by using a third and a fourth switching element, and cooperating with a first and a second switching element, the driver 110 and the coupling capacitor module 130 can be turned on when a second burst transmission signal is received, so that the second burst transmission signal is input to the coupling capacitor module 130, and the output common-mode voltage is not input to the coupling capacitor module 130, thereby ensuring the normal transmission of the second burst transmission signal. During the protection interval between every two second burst transmission signals, the driver 110 and the coupling capacitor module 130 are turned off, and the output common-mode voltage is input to the coupling capacitor module 130, so that the voltage signal across the coupling capacitor module 130 will not change after the arrival of the second burst transmission signal, and no additional common-mode signal will be generated.
[0057] In one specific embodiment, a third structural schematic diagram of the burst transmission signal conditioning circuit is shown, as follows: Figure 6 As shown. Figure 6In this context, Vcom is the output common-mode voltage of driver 110, and its value is the output common-mode voltage value of driver 110. k3 and k4 are the third and fourth switching elements, respectively. The first switching element k1, the second switching element k2, the third switching element k3, and the fourth switching element k4 can be turned on or off by a field-programmable gate array or an application-specific integrated circuit to select whether the input of coupling capacitor module 130 is the output of driver 110 (second burst transmission signal) or the output common-mode voltage Vcom. Specifically, in the idle state, the first switching element k1 and the second switching element k2 can be turned on, and the third switching element k3 and the fourth switching element k4 can be turned off, so that the second burst transmission signal is input to coupling capacitor module 130. In the burst state, the first switching element k1 and the second switching element k2 can be turned off, and the third switching element k3 and the fourth switching element k4 can be turned on, so that the output common-mode voltage Vcom is input to coupling capacitor module 130.
[0058] In one specific embodiment, the first switching element k1, the second switching element k2, the third switching element k3, and the fourth switching element k4 can be analog switches, RF (Radio Frequency) switches, MEMS (Micro Electromechanical System) switches, or other switching devices capable of meeting signal insertion loss requirements. The timing of the second burst transmission signal can be determined by the internal time slot allocation of a field-programmable gate array or application-specific integrated circuit, or the burst transmission signal conditioning circuit can be determined to be in a burst state or an idle state via the SD (Signal Detect) function within the driver 110.
[0059] In existing technologies, for serial receivers, after AC coupling, the differential mode of the input signal is generally of concern. However, because the voltage changes at the P and N terminals of driver 110 are inversely related, the baseline of the differential signal slowly changes from Vpp to 0V. A schematic diagram of the voltage change before the AC coupling capacitor is shown below. Figure 7 As shown in the diagram, this illustrates the voltage change after the AC coupling capacitor. Figure 8 As shown in the diagram, this illustrates the change in the differential-mode signal after the AC coupling capacitor. Figure 9 As shown, where, Figure 7 , Figure 8 The two line types in the diagram represent the voltage at terminal P and the voltage at terminal N, respectively. It is not necessary to specify which line type corresponds to which terminal voltage. Figures 7-9In the graph, the horizontal axis represents time in microseconds (µs), and the vertical axis represents voltage in volts (V). From the idle state to the burst state, signal distortion caused by AC coupling capacitance renders part of the preamble of the burst transmission signal (second burst transmission signal) unusable, creating hard overhead on the link. For example, AC coupling capacitance above 4.7 nF can render part of the preamble of the burst transmission signal (second burst transmission signal) almost unusable. Small AC coupling capacitance can shorten charging and discharging time, but excessively small capacitance can cause bit errors.
[0060] After processing by the burst transmission signal conditioning circuit provided in this embodiment of the invention, a single-ended (N-end and P-end) waveform diagram after conditioning module 120 is obtained, as shown below. Figure 10 As shown in the diagram, this is a schematic of the single-ended waveform after passing through the coupling capacitor module 130. Figure 11 As shown, this is a schematic diagram of the differential mode signal after passing through the coupling capacitor module 130. Figure 12 As shown in the diagram, this is a partial detail of the differential-mode signal after passing through the coupling capacitor module 130. Figure 13 As shown, where, Figure 10 , Figure 11 The two line types in the diagram represent the voltage at terminal P and the voltage at terminal N, respectively. It is not necessary to specify which line type corresponds to which terminal voltage. Figures 10-13 In the graph, the horizontal axis represents time, in microseconds (µs), and the vertical axis represents voltage, in volts (V). From... Figures 10-13 It can be seen that the distortion of burst transmission signals during transmission has been effectively controlled.
[0061] The burst transmission signal conditioning circuit provided in this embodiment of the invention receives a first burst transmission signal through the driver 110, processes the first burst transmission signal to obtain a second burst transmission signal, and then, through the conditioning module 120, inputs the second burst transmission signal to the coupling capacitor module 130 upon receiving it. During the guard interval between every two second burst transmission signals, the driver 110 and the coupling capacitor module 130 are not connected. After receiving the second burst transmission signal, the coupling capacitor module 130 performs common-mode matching processing on the second burst transmission signal to obtain a common-mode matched burst transmission signal. This avoids distortion and bit errors in the burst transmission signal during transmission, improving the accuracy of burst transmission signal transmission. This embodiment of the invention solves the problem of signal distortion and bit errors in the uplink serial receiver signal of a passive optical network optical module or optical transceiver after passing through an AC coupling capacitor in burst mode.
[0062] In this embodiment of the invention, since bit errors can be avoided, the length of the preamble of the burst transmission signal can be significantly compressed, thereby improving the transmission speed of the burst transmission signal. In addition, in this embodiment of the invention, the size of the capacitor of the coupling capacitor module 130 does not affect the length of the preamble, and a larger capacitor can be used to improve the performance of the PRBS31 code pattern (a general code pattern).
[0063] Figure 14 This is a flowchart illustrating the burst transmission signal modulation method according to an embodiment of the present invention. Figure 14 As shown, the burst transmission signal conditioning method includes:
[0064] S101, the first burst transmission signal is limited by the driver to obtain the second burst transmission signal;
[0065] S102, the second burst transmission signal is input to the coupling capacitor module, and during the protection interval between every two second burst transmission signals, the driver and the coupling capacitor module are not connected.
[0066] S103: After receiving the second burst transmission signal, common mode matching processing is performed on the second burst transmission signal to obtain the burst transmission signal after common mode matching processing.
[0067] This invention provides a burst transmission signal conditioning device, including the burst transmission signal conditioning circuit described in the above embodiments. The burst transmission signal conditioning device may further include an optical line terminal and an optical network unit, etc.
[0068] This invention provides a chip including the burst transmission signal conditioning circuit as described in the above embodiments.
[0069] This invention provides an electronic device, including the burst transmission signal conditioning circuit as described in the above embodiments.
[0070] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0071] The above embodiments merely illustrate preferred implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention should be determined by the appended claims.
Claims
1. A burst transmission signal conditioning circuit, characterized in that, It includes a driver, an adjustment module, and a coupling capacitor module, wherein the adjustment module is composed of a switching circuit; The driver is used to receive a first burst transmission signal, drive the first burst transmission signal to obtain a second burst transmission signal; The adjustment module is used to input the second burst transmission signal to the coupling capacitor module when the second burst transmission signal is received, and is also used to prevent the driver from conducting with the coupling capacitor module during the protection interval between every two second burst transmission signals. The coupling capacitor module is used to perform common-mode matching processing on the second burst transmission signal after receiving the second burst transmission signal, so as to obtain the burst transmission signal after common-mode matching processing.
2. The burst transmission signal conditioning circuit according to claim 1, characterized in that, The burst transmission signal conditioning circuit also includes a serial receiver, which is used to receive the burst transmission signal after the common-mode matching processing.
3. The burst transmission signal conditioning circuit according to claim 1, characterized in that, The adjustment module includes a first switching circuit, which is connected to the driver and the coupling capacitor module respectively. The first switching circuit is used to turn on the driver and the coupling capacitor module when a second burst transmission signal is received, so that the second burst transmission signal is input to the coupling capacitor module. It is also used to turn off the driver and the coupling capacitor module during the protection interval between every two second burst transmission signals.
4. The burst transmission signal conditioning circuit according to claim 3, characterized in that, The first switching circuit includes a first switching element and a second switching element. The first end of the first switching element is connected to the first end of the driver, the second end of the first switching element is connected to the first end of the coupling capacitor module, the first end of the second switching element is connected to the second end of the driver, and the second end of the second switching element is connected to the second end of the coupling capacitor module.
5. The burst transmission signal conditioning circuit according to claim 3, characterized in that, The adjustment module further includes a second switching circuit, which receives the output common-mode voltage of the driver and is also connected to the coupling capacitor module. The second switching circuit is used to prevent the output common-mode voltage from being input to the coupling capacitor module when the first switching circuit receives a second burst transmission signal, and is also used to allow the output common-mode voltage to be input to the coupling capacitor module during the protection interval between every two second burst transmission signals.
6. The burst transmission signal conditioning circuit according to claim 5, characterized in that, The second switching circuit further includes a third switching element and a fourth switching element. The first terminal of the third switching element and the first terminal of the fourth switching element are respectively connected to the output common-mode voltage, and the second terminal of the third switching element and the second terminal of the fourth switching element are respectively connected to the coupling capacitor module.
7. A method for regulating burst transmission signals, applied to the burst transmission signal regulation circuit as described in any one of claims 1 to 6, characterized in that, include: The first burst transmission signal is driven and processed by the driver to obtain the second burst transmission signal; The second burst transmission signal is input to the coupling capacitor module, and during the protection interval between every two second burst transmission signals, the driver and the coupling capacitor module are not connected. After receiving the second burst transmission signal, common-mode matching processing is performed on the second burst transmission signal to obtain the common-mode matching processed burst transmission signal.
8. A burst transmission signal conditioning device, characterized in that, Includes the burst transmission signal conditioning circuit as described in any one of claims 1 to 6.
9. A chip, characterized in that, Includes the burst transmission signal conditioning circuit as described in any one of claims 1 to 6.