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A method for automatic debugging of serdes link parameters

A link parameter and automatic debugging technology, applied in the field of SerDes communication, can solve the problems of high debugging cost, unsatisfactory effect and low debugging efficiency, and achieve the effect of improving training efficiency

Active Publication Date: 2020-11-06
SANECHIPS TECH CO LTD
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  • Claims
  • Application Information

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Problems solved by technology

The efficiency of purely relying on experience debugging is very low, and it needs to rely on expensive oscilloscopes, the debugging cost is too high, and the effect is not ideal at the same time

Method used

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  • A method for automatic debugging of serdes link parameters
  • A method for automatic debugging of serdes link parameters
  • A method for automatic debugging of serdes link parameters

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Embodiment Construction

[0035] The preferred embodiments of the present invention will be described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0036] figure 1 A flow chart for debugging SerDes link parameters according to the present invention.

[0037] After connecting the test equipment and the high-speed serial-parallel / parallel-serial converter to be debugged, debug the SerDes link parameters according to the following steps:

[0038] Step 1, determine the codec mode based on the link clock and channel characteristics; determine the forward error correction method and check code;

[0039] Step 2, determine the pre-emphasis parameter range, and train the transmitting side (TX side) of the high-speed serial-to-parallel / parallel-serial converter to be debugged according to the pre-emphasis parameter rang...

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Abstract

A SerDes link parameter automatic debugging method, selects the corresponding encoding and decoding mode, forward error correction method and check code according to the link clock and channel characteristics, and then determines the pre-emphasis parameters suitable for the TX side of the link through a backtracking method, After the above code stream learning process, the adaptive configuration parameters are determined through training on the RX side of the link. Since the method implements strict timing control on the training of the TX side and the RX side, the link parameter configuration deviation caused by the interference generated during the two-way communication of the link is avoided, and the accuracy of the set link parameters can be effectively guaranteed. At the same time, since the TX side performs backtracking training on the currently selected pre-emphasis parameters of the link according to the error reported by the FEC decoding of the link on the RX side, the parameter configuration selected for each training can be determined according to the link characteristics, and the training efficiency is improved. The method is applicable to various router backplanes, and realizes automatic debugging of each link parameter for high-speed SerDes links.

Description

technical field [0001] The invention relates to the technical field of SerDes communication, in particular to an automatic debugging method for link parameters of high-speed SerDes. Background technique [0002] With the increase in broadband demand and business scale, the industry has put forward higher requirements for efficient data transmission, and in data transmission under high-speed channels, ensuring data stability is the key to achieving efficient data transmission. [0003] SerDes is the abbreviation of English SERializer (serializer) / DESerializer (deserializer) (that is, serial-parallel / parallel-serial converter). It is a mainstream time-division multiplexing (TDM), point-to-point (P2P) serial communication technology. That is, at the sending end, multiple low-speed parallel signals are converted into high-speed serial signals, passed through the transmission medium (optical cable or copper wire), and finally the high-speed serial signals are re-converted into l...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03M9/00
CPCH03M9/00H03M13/3707
Inventor 李强
Owner SANECHIPS TECH CO LTD
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