Multi-channel signal detection system and optical module
By directly connecting the signal level output port of the digital signal processor and the interrupt input interface of the control module in the optical module, simultaneous detection of multi-channel signals is achieved, solving the problem of excessively long response time in RxLOSL mode and improving the level response efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DONGGUAN LUXSHARE TECH CO LTD
- Filing Date
- 2025-06-30
- Publication Date
- 2026-07-21
AI Technical Summary
In the four-channel small pluggable 112 multi-source protocol and the dual-density four-channel small pluggable multi-source protocol, the response time required by the fast optical response mode in the RxLOSL operating mode is difficult to meet the protocol requirements by software reading, resulting in an excessively long level response time.
By directly connecting multiple signal level output ports in the digital signal processor to multiple interrupt input interfaces in the control module, multi-channel signal detection is achieved, reducing circuit complexity, supporting simultaneous detection of multiple channels of signals, and outputting indicator signals at the open-drain output interface.
It improves the speed and level response efficiency of optical module status determination, enabling the identification of the optical module's working status in a shorter time without the need for multiple one-to-one software reads.
Smart Images
Figure CN224538204U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of communication technology, and in particular to a multi-channel signal detection system and optical module. Background Technology
[0002] In the Quad Small Form Factor Pluggable 112 Multi Source Agreement (QSFP112 MSA) and the Quad Small Form Factor Pluggable-Double Density MultiSource Agreement (QSFP-DD MSA), the Interrupt (IntL) / Receiver Loss of Signal-Low (RxLOSL) is a functionally multiplexed active-low indicator using an open-drain output level to indicate changes in the optical module's status or a fault condition. This signal is pulled high to the positive supply voltage (Vcc) when the optical module is inserted into the motherboard.
[0003] In RxLOSL operating mode, most applications only require a response time of no more than 100ms, meaning the digital signal processor (DSP) register status can be read via the integrated circuit bus for monitoring. However, in the fast optical response mode within RxLOSL, a response time of 1ms is required, and the time required for software reading is insufficient to meet protocol requirements. Utility Model Content
[0004] This invention provides a multi-channel signal detection system and optical module, enabling the optical module to simultaneously support multi-channel signal detection, determine the working state of the optical module at a higher speed, and improve level response efficiency.
[0005] In a first aspect, this utility model provides a multi-channel signal detection system, including: a digital signal processor and a control module; the digital signal processor includes: at least two signal level output ports; the control module includes at least two interrupt input interfaces and an open-drain output interface; wherein, the signal level output ports correspond one-to-one with the interrupt input interfaces;
[0006] Each signal level output port is connected to the corresponding interrupt input interface, and configured to use the output level of each signal level output port as the input level of each interrupt input interface;
[0007] The control module is configured to output an indicator signal at the open-drain output interface that corresponds to the input level of each interrupt input interface.
[0008] Secondly, this utility model embodiment also provides an optical module, including a multi-channel signal detection system as described in any of the above embodiments.
[0009] This utility model provides a multi-channel signal detection system and optical module, including: a digital signal processor and a control module; the digital signal processor includes: at least two signal level output ports; the control module includes at least two interrupt input interfaces and an open-drain output interface; wherein, the signal level output ports correspond one-to-one with the interrupt input interfaces; each signal level output port is connected to its corresponding interrupt input interface and configured to use the output level of each signal level output port as the input level of each interrupt input interface; the control module is configured to output an indication signal at the open-drain output interface corresponding to the input level of each interrupt input interface. By adopting the above technical solution, multiple signal level output ports in the digital signal processor are directly connected to multiple interrupt input interfaces in the control module, allowing the control module to simultaneously output an indication signal at the open-drain output interface based on the received input levels of multiple interrupt input interfaces. This reduces circuit complexity, enables simultaneous multi-channel signal detection without requiring multiple one-to-one software reads, and allows for faster determination of the operating state of the optical module, improving level response efficiency.
[0010] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of this utility model, nor is it intended to limit the scope of this utility model. Other features of this utility model will become readily apparent from the following description. Attached Figure Description
[0011] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0012] Figure 1 A schematic diagram of the structure of a multi-channel signal detection system provided in an embodiment of this utility model;
[0013] Figure 2 Example circuit structure diagram of the multi-channel signal detection system provided in this embodiment of the utility model;
[0014] Figure 3 An example circuit structure diagram of another multi-channel signal detection system provided in this embodiment of the present invention. Detailed Implementation
[0015] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.
[0016] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the utility model described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.
[0017] In one embodiment, Figure 1 This is a schematic diagram of a multi-channel signal detection system provided in an embodiment of the present invention. This multi-channel signal detection system is applicable to situations requiring rapid response signal status detection for optical modules using multi-channel protocols. The multi-channel signal detection system 1 includes a digital signal processor 11 and a control module 12.
[0018] The digital signal processor 11 includes at least two signal level output ports 111; the control module 12 includes at least two interrupt input interfaces 121 and an open-drain output interface 122.
[0019] Among them, the signal level output port 111 corresponds one-to-one with the interrupt input port 121.
[0020] Each signal level output port 111 is connected to the corresponding interrupt input interface 121, and is configured to use the output level of each signal level output port 111 as the input level of each interrupt input interface 121.
[0021] The control module 12 is configured to output an indication signal at the open-drain output interface 122 that corresponds to the input level of each interrupt input interface 121.
[0022] The control module 12 is used to output an indication signal at the open-drain output interface 122 according to the input level of each interrupt input interface 121.
[0023] In this embodiment, the multi-channel signal detection system 1 can be specifically understood as a system used to simultaneously detect signals acquired from multiple channels in a DSP, and to promptly output a prompt signal when any channel malfunctions. In some examples, the multi-channel signal detection system can be installed in optical modules used in data centers and high-performance computing networks to quickly detect the operating status of the optical modules and promptly issue an indication signal when a fault is detected, prompting personnel to check and modify the system.
[0024] In this embodiment, the digital signal processor 11 can be specifically understood as an electronic device in the multi-channel signal detection system 1 used to process high-speed digital signals, compensate for damage during signal transmission, and improve the performance and reliability of the optical communication system. In some examples, the digital signal processor 11 may include at least two signal level output ports 111, which are respectively used to output a Loss of Lock (LOL) signal or an Interrupt (INTR) signal for the optical signal in one channel. It should be noted that the digital signal processor 11 includes multiple signal level output ports 111 for outputting LOL signals.
[0025] In this embodiment, the control module 12 can be specifically understood as an electronic device in the multi-channel signal detection system 1 used to interact with external devices and to control, monitor and communicate internally. It can be used to process and detect the signals input from the digital signal processor 11 in order to determine the working state of the multi-channel signal detection system 1.
[0026] In this embodiment, the signal level output port 111 can be specifically understood as the output interface in the digital signal processor 11 used to output the LOL state of a certain channel optical signal, or the output interface used to output the interrupt state of the digital signal processor 11. The interrupt input interface 121 can be specifically understood as the input interface in the control module 12 used to receive the working status signal of the digital signal processor 11, and the type of signal received is related to the type of signal output by its corresponding signal level output port 111. The open-drain output interface 122 can be specifically understood as the output interface in the control module 12 used to output the IntL / RxLOSL state, which can be understood as the indicator signal in this embodiment of the present invention. In some examples, the open-drain output interface 122 can be connected to a gold finger to output the indicator signal externally through the gold finger.
[0027] Specifically, the multi-channel signal detection system 1 includes at least a digital signal processor 11 and a control module 12. The digital signal processor 11 includes at least two signal level output ports 111, each corresponding to one channel on the digital signal processor 11. That is, the digital signal processor 11 can simultaneously output multi-channel point signals through multiple signal level output ports 111. The control module 12 includes at least two interrupt input interfaces 121, each with a one-to-one correspondence to a signal level output port 111. This allows the control module to simultaneously receive output levels from different channels of the digital signal processor 11 through multiple interrupt input interfaces 121 and use them as its own input levels. The control module 12 then performs corresponding internal logic processing based on the input levels received from each interrupt input interface 121, and outputs the processed signal as an indication signal through an open-drain output interface 122.
[0028] It is understood that the indication signal in the embodiments of this utility model can be understood as a signal used to issue an alarm to the outside world, and the embodiments of this utility model do not limit it in this way.
[0029] The technical solution of this utility model embodiment provides a multi-channel signal detection system, including: a digital signal processor and a control module; the digital signal processor includes: at least two signal level output ports; the control module includes at least two interrupt input interfaces and an open-drain output interface; wherein, the signal level output ports correspond one-to-one with the interrupt input interfaces; each signal level output port is connected to the corresponding interrupt input interface, and is used to use the output level of each signal level output port as the input level of each interrupt input interface; the control module is used to output an indication signal at the open-drain output interface according to the input level of each interrupt input interface. By adopting the above technical solution, multiple signal level output ports in the digital signal processor are directly connected to multiple interrupt input interfaces in the control module, so that the control module can simultaneously output an indication signal at the open-drain output interface according to the input levels received from multiple interrupt input interfaces, reducing circuit complexity, enabling multi-channel signal detection to be supported simultaneously without the need for one-to-one multiple software reads, and determining the working state of the optical module at a higher speed, thus improving the level response efficiency.
[0030] In some examples, control module 12 is specifically used for:
[0031] When the input level of each interrupt input interface 121 is high, a high-level indication signal is output at the open-drain output interface 122; when the input level of any interrupt input interface 121 is low, a low-level indication signal is output at the open-drain output interface 122.
[0032] Specifically, for both IntL and RxLOSL modes, the control module 12 uses the same signal conversion logic between the interrupt input interface 121 and the open-drain output interface 122. When any channel output of the digital signal processor 11 is low, an abnormal state is considered to exist in the multi-channel signal detection system 1. That is, when the output levels of all interrupt input interfaces 121 are high, a high-level indicator signal will be output to the open-drain output interface 122 to indicate that the multi-channel signal detection system 1 is functioning normally; when any one of the interrupt input interfaces 121 has a low input level, a low-level indicator signal will be output to the open-drain output interface 122 to indicate that the multi-channel signal detection system 1 is in an abnormal operating state.
[0033] In some examples, the multi-channel signal detection system 1 has two different operating modes: a first operating mode and a second operating mode. The first operating mode can be specifically understood as the RxLOSL operating mode, and the second operating mode can be specifically understood as the IntL operating mode.
[0034] Accordingly, based on different operating modes, the signal level output port 111 may include at least two first signal level output ports 1111 and one second signal level output port 1112.
[0035] The first signal level output port 1111 is used to output a first output level in the first working mode; the first output level represents the signal loss status of the channel corresponding to the first signal level output port 1111.
[0036] The second signal level output port 1112 is used to output a second output level in the second operating mode; the second output level represents the fault condition of the digital signal processor 11.
[0037] In this embodiment, the first signal level output port 1111 can be specifically understood as the output port of the digital signal processor 11 used to output the LOL status signal of a certain channel. The second signal level output port 1112 can be specifically understood as the output port of the digital signal processor 11 used to output the interrupt (INTR) status signal.
[0038] Corresponding to the signal level output port 111 mentioned above, the interrupt input interface 121 includes:
[0039] The first interrupt input interface 1211, which corresponds to the first signal level output port 1111, is used to receive the first output level output by the corresponding first signal level output port 1111 as the first input level.
[0040] The second interrupt input interface 1212, which corresponds to the second signal level output port 1112, is used to receive the second output level output by the corresponding second signal level output port 1112 as the second input level.
[0041] In some examples, the control module 12 is specifically configured to output an indication signal corresponding to the first input level of each first interrupt input interface 1211 at the open-drain output interface 122 in the first operating mode.
[0042] In some examples, the control module 12 is specifically configured to: in a first operating mode, output an indication signal at the open-drain output interface 122 according to the first input level of each first interrupt input interface 1211; wherein, when all first input levels are high, the indication signal is a high-level signal; and when any first input level is low, the indication signal is a low-level signal.
[0043] Specifically, in the first operating mode, the control module 12 receives multiple first input levels from multiple first interrupt input interfaces 1211 corresponding to the first signal level output port 1111 in the digital signal processor 11, and analyzes the multiple first input levels to determine the indication signal output at the open-drain output interface 122. The logic for determining the indication signal is as follows: if any input level is low, a low-level indication signal is output; otherwise, a high-level indication signal is output.
[0044] In some examples, the control module 12 is specifically configured to output an indication signal corresponding to the second input level of the second interrupt input interface 1212 at the open-drain output interface 122 in the second operating mode.
[0045] The level of the indicator signal is consistent with the level of the second input level.
[0046] In some examples, the control module 12 is specifically used to: in the second operating mode, output an indication signal at the open-drain output interface 122 that is consistent with the level state of the second input level, based on the second input level of the second interrupt input interface 1212.
[0047] Specifically, in the second operating mode, the control module 12 receives the second input level from the second interrupt input interface 1212 corresponding to the second signal level output port 1112 in the digital signal processor 11, and determines the indicator signal output at the open-drain output interface 122 based on the second input level. The determination logic is to ensure that the level of the indicator signal output by the open-drain output interface 122 is consistent with the level of the second input level. That is, when the second input level is high, the indicator signal output by the open-drain output interface 122 is a high-level signal, indicating that the multi-channel signal detection system 1 is in a normal state; while when the second input level is low, the indicator signal output by the open-drain output interface 122 is a low-level signal, indicating that the multi-channel signal detection system 1 has an interrupt abnormality.
[0048] In some examples, Figure 2 A circuit structure example diagram of the multi-channel signal detection system provided in this embodiment of the utility model is shown below. Figure 2 As shown, taking an example where the number of signal level output ports 111 is 5, including 4 first signal level output ports 1111 and 1112 second signal level output ports 1112, the number of interrupt input interfaces 121 is also 5, including 4 first interrupt input interfaces 1211 and 1212 second interrupt input interfaces 1212. Since each first signal level output port 1111 is used to output the LOL signal and the second signal level output port 1112 is used to output the INTR signal, for ease of description, in... Figure 2 In this context, LOL1N-LOL4N represent the four first signal level output ports 1111, LOL_1N-LOL_4N represent the four first interrupt input interfaces 1211, INTRN, located in the digital signal processor 11 and the control module 12 respectively, represents the second signal level output port 1112 and the second interrupt input interface 1212, and RXLOSL represents the open-drain output interface 122.
[0049] In some examples, the power supply voltage (VDDIO) of the digital signal processor 11 is the same as the power supply voltage (VCCIO) of the control module 12.
[0050] Understandably, to ensure circuit safety, each signal level output port 111 and interrupt input interface 121, and the power supply (VDDIO) of the digital signal processor 11 or the power supply (VCCIO) of the control module 12, can be connected via resistors. In this scheme, R1-R4 represent the resistors corresponding to LOL1N-LOL4N, and R5 represents the resistor corresponding to INTRN. Figure 2 The example shown is that R1-R5 are connected to the power supply (VDDIO) of the digital signal processor 11.
[0051] Specifically, when the open-drain output interface 122 of the control module 12 is configured to operate in the first operating mode, i.e., in RxLOSL mode, LOL1N-LOL4N of the digital signal processor 11 correspond to the signal status outputs of channels 1-4, respectively. When all four channels of the digital signal processor 11 are operating normally, the output level of the first signal level output port 1111 corresponding to LOL1N-LOL4N is high, and at this time, the input level of the first interrupt input interface 1211 corresponding to LOL_1N-LOL_4N is... When the signal is high, the control module 12 outputs a high-level indicator signal to the open-drain output interface 122 to indicate that no fault has occurred in the first operating mode. However, when any one or more of the four channels of the digital signal processor 11 LOLNx (x=1,2,3,4) experience signal loss, the faulty channel will output a low level, and the corresponding LOL_Nx input signal will be in a low-level state. At this time, the control module 12 outputs a low-level indicator signal to the open-drain output interface 122 to indicate that a fault has occurred in the first operating mode.
[0052] Specifically, when the open-drain output interface 122 of the control module 12 is configured to operate in the second operating mode, i.e., in IntL mode, when the digital signal processor 11 is in normal working state, the output level of INTRN in the digital signal processor 11, i.e., the second signal level output port 1112, is high, and the corresponding input level of INTRN in the control module 12, i.e., the second interrupt input interface 1212, is high. At this time, the control module 12 outputs a high-level indication signal to the open-drain output interface 122 to indicate that no fault has occurred in the second operating mode. However, when the digital signal processor 11 is in an abnormal operating state, the output level of INTRN in the digital signal processor 11, i.e., the second signal level output port 1112, is low, and the corresponding input level of INTRN in the control module 12, i.e., the second interrupt input interface 1212, is low. At this time, the control module 12 outputs a low-level indication signal to the open-drain output interface 122 to indicate that an abnormal operating state has occurred in the second operating mode.
[0053] In some examples, Figure 3 This is an example circuit structure diagram of another multi-channel signal detection system provided in an embodiment of the present invention, which is as follows: Figure 2 The circuit structure of the multi-channel signal detection system shown is further enriched, such as... Figure 3 As shown, the digital signal processor 11 further includes: a first integrated circuit bus interface 112; the control module 12 further includes: a second integrated circuit bus interface 123.
[0054] For ease of description, in Figure 3 In this text, I2C1 refers to the first integrated circuit bus interface 112, and I2C2 refers to the second integrated circuit bus interface 123.
[0055] The first integrated circuit bus interface 112 is connected to the second integrated circuit bus interface 123 via an integrated circuit bus.
[0056] The control module 12 is also used to read the register status of the digital signal processor 11 through the second integrated circuit bus interface 123, and output an indication signal at the open-drain output interface 122 according to the register status.
[0057] It should be clarified that, in the above embodiments, the control module 12 may include at least one of the following:
[0058] Microcontroller Unit (MCU); Digital Signal Processing Chip; Programmable Logic Controller (PLC); Field-Programmable Gate Array (FPGA); System of Chip (SOC).
[0059] In one embodiment, the present invention also provides an optical module, including a multi-channel signal detection system 1 as provided in any of the above embodiments.
[0060] The specific embodiments described above do not constitute a limitation on the scope of protection of this utility model. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.
Claims
1. A multi-channel signal detection system, characterized in that, include: Digital signal processors and control modules; The digital signal processor includes at least two signal level output ports; the control module includes at least two interrupt input interfaces and an open-drain output interface; wherein, the signal level output ports correspond one-to-one with the interrupt input interfaces; Each of the signal level output ports is connected to the corresponding interrupt input interface, and is configured to use the output level of each of the signal level output ports as the input level of each of the interrupt input interfaces; The control module is configured to output an indication signal at the open-drain output interface that corresponds to the input level of each of the interrupt input interfaces.
2. The multi-channel signal detection system according to claim 1, characterized in that, The control module is specifically configured as follows: When the input levels of all the interrupt input interfaces are high, a high-level indication signal is output at the open-drain output interface; When the input level of any of the interrupt input interfaces is low, a low-level indication signal is output at the open-drain output interface.
3. The multi-channel signal detection system according to claim 1, characterized in that, The signal level output port includes: at least two first signal level output ports and one second signal level output port; The first signal level output port is configured to output a first output level in a first operating mode; wherein, the first output level represents the signal loss status of the channel corresponding to the first signal level output port; The second signal level output port is configured to output a second output level in the second operating mode; wherein the second output level represents the fault condition of the digital signal processor.
4. The multi-channel signal detection system according to claim 3, characterized in that, The interrupt input interface includes: The first interrupt input interface corresponding to the first signal level output port is configured to receive the first output level output by the corresponding first signal level output port as the first input level; The second interrupt input interface corresponding to the second signal level output port is configured to receive the second output level output from the corresponding second signal level output port as the second input level.
5. The multi-channel signal detection system according to claim 4, characterized in that, The control module is specifically configured as follows: In the first operating mode, the open-drain output interface outputs an indication signal corresponding to the first input level of each of the first interrupt input interfaces; Wherein, when all of the first input levels are high, the indication signal is a high-level signal; when any of the first input levels is low, the indication signal is a low-level signal.
6. The multi-channel signal detection system according to claim 4, characterized in that, The control module is specifically used for: In the second operating mode, an indication signal corresponding to the second input level of the second interrupt input interface is output at the open-drain output interface; The level of the indication signal is consistent with the level of the second input level.
7. The multi-channel signal detection system according to any one of claims 1-6, characterized in that, The power supply voltage of the digital signal processor is the same as that of the control module.
8. The multi-channel signal detection system according to any one of claims 1-6, characterized in that, The control module includes at least one of the following: microcontroller; Digital signal processing chip; Programmable logic controller; Field-programmable gate arrays (FPGAs); System-on-a-chip.
9. The multi-channel signal detection system according to any one of claims 1-6, characterized in that, The digital signal processor further includes: a first integrated circuit bus interface; the control module further includes: a second integrated bus interface; The first integrated circuit bus interface is connected to the second integrated bus interface via an integrated circuit bus.
10. An optical module, characterized in that, include: The multi-channel signal detection system as described in any one of claims 1-9.