Light-off protection circuit and light-off protection method of optical transmission equipment
A technology for protecting circuits and optical transmission, applied in the field of Ethernet, which can solve the problems of not turning off the light in time and unable to turn off the light in the protection circuit, and achieve the effect of timely, rapid and effective light-off protection
Active Publication Date: 2020-09-18
深圳市恒扬数据股份有限公司
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Problems solved by technology
[0006] The purpose of the present invention is to provide a light-off protection circuit and a light-off protection method of an optical transmission device, aiming to solve the problem that the light-off protection circuit of an existing QSFP28 interface optical transmission device is not turned off in time, even when the CPU is abnormal , the problem of not being able to turn off the light
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[0051] Further, as a preferred embodiment of the present invention, the light-off protection method further includes the following steps:
[0052] When the level state of the light-off protection pin is the second level, the second control module controls the first protection module to close the path between the first control module and the optical transmission device, and controlling the second protection module to disconnect the path between the second control module and the optical transmission device;
[0053] The first control module accesses the optical transmission device through the first protection module.
[0054] Further, as a preferred embodiment of the present invention, the light-off protection method further includes the following steps:
[0055] When the level state of the light-off protection pin is a second level, the second control module directly accesses the optical transmission device.
[0056] It should be noted that, in the embodiment of the present i...
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The invention is applicable to the technical field of the Ethernet, and provides a light-off protection circuit and light-off protection method of optical transmission equipment. The light-off protection circuit of the optical transmission equipment includes a first control module, a second control module, a first protection module and a second protection module; by means of the light-off protection circuit of the optical transmission equipment, when the first control module and / or the optical transmission equipment are abnormal, the second control module can controls the first protection module to cut off the path between the first control module and the optical transmission equipment and controls the second protection module to make the path between the second control module and the optical transmission equipment closed, the second protection module sends a light-off command to the optical transmission equipment, the optical transmission equipment can thus conduct light-off operation according to the light-off command, the effective light-off protection of the optical transmission equipment is thus achieved, the light-off protection is rapidly and timely achieved, and the problems that light-off operation of the light-off protection circuit of the optical transmission equipment of an existing QSFP28 interface is not timely conducted and even can not be conducted when CPU abnormity occurs are solved.
Description
technical field [0001] The invention belongs to the technical field of Ethernet, and in particular relates to a light-off protection circuit of optical transmission equipment and a light-off protection method thereof. Background technique [0002] In the existing 100GE Ethernet link environment, the interface of the optical transmission equipment mainly adopts the CFP series interface (CFP / CFP2 / CFP4). Because in the optical transmission equipment composed of CFP series interfaces, the CFP series optical interface module itself has a launch enabling pin (TX-DISABLE), so under normal circumstances, the central processing unit (Central Processing Unit, CPU) can pass The MDIO bus accesses the optical transmission equipment, and when the CPU or the optical transmission equipment is abnormal, the complex programmable logic device (Complex Programmable Logic Device, CPLD) can control the optical transmission equipment to quickly turn off the light (such as figure 1 shown), so as t...
Claims
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IPC IPC(8): G06F11/07
CPCG06F11/0796
Inventor 魏星平
Owner 深圳市恒扬数据股份有限公司