Method for achieving automatic adjustment of parameters of Ethernet based on PRBS
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A parameter adjustment, Ethernet technology, applied in digital transmission systems, data exchange networks, electrical components, etc., can solve the problems of time-consuming and unreliable results, and achieve the effect of simple design logic, convenient transplantation, and strong applicability
Inactive Publication Date: 2016-05-25
SHANGHAI GONGJIN COMM TECH
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[0036] In order to describe the technical content of the present invention more clearly, further description will be given below in conjunction with specific embodiments.
[0037] The present invention proposes a PRBS (Pseudo-Random Binary Sequence, pseudo-random binary sequence) automatic parameter adjustment method for an Ethernet port, and provides a solution. The pre-emphasis parameters of the port PHY (PhysicalLayer, physical layer) can be traversed by software to automatically test and select the best transmission parameters of the current link. This method does not need other test tools, and can flexibly change and configure the parameters of the Ethernet port according to different application scenarios and networking, so as to achieve the optimal transmission effect.
[0038] The main method is to detect and record the bit error rate under each parameter node through the PRBS transmitter and receiver that comes with the PHY, select the best parameter value, and option...
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Abstract
The invention relates to a method for achieving automatic adjustment of parameters of the Ethernet based on a PRBS, and the method comprises the steps: enabling PHY chips of a receiving end and a transmitting end to start a function of PRBS, and enabling the code patterns of the PRBS of the two PHY chips to remain the same; enabling the transmitting end to transmit a PRBS code stream to the receiving end; reading the error rate of the PRBS of the receiving end, and generating an error rate graph; analyzing the generated error rate graph, and selecting an optimal parameter; and enabling the optimal parameter to be stored and written in a register. The method can achieve the parameter adjustment of an Ethernet port in different application situations, and the function of parameter adjustment can be integrated in application layer software. Moreover, there is no need for other testing tools. The parameter selection of all ports can be achieved through the built-in PRBS transmitters and receivers in the PHY chips. In addition, the method is simple in operation, and the whole process of parameter selection can be completed through one instruction or key. Therefore, the method is flexible and convenient, is simple in software design logic, is convenient to transplant, is high in applicability, and is wider in application range.
Description
technical field [0001] The invention relates to the technical field of Ethernet, in particular to the field of high-speed DerDes link transmission system above Gbit, and specifically refers to a method for realizing automatic parameter adjustment of Ethernet based on PRBS. Background technique [0002] The life of modern people is increasingly inseparable from the Internet. Therefore, the requirements for network bandwidth and network speed are getting higher and higher. Especially for the deployment of data centers such as backbone networks and core networks, the rate of Ethernet ports has been gradually upgraded to 10,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000. Serial interface, so the SerDes technology originally used for optical fiber communication has become the mainstream of high-speed serial interface. [0003] The improvement of Ethernet transmission rate reduces the cost of backbone network deployment such as data centers, and further incr...
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