SerDes link parameter automatic debugging method

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

Active Publication Date: 2018-12-04
SANECHIPS TECH CO LTD
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  • 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 exp

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  • SerDes link parameter automatic debugging method
  • SerDes link parameter automatic debugging method
  • SerDes link parameter automatic debugging method

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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

Provided is a SerDes link parameter automatic debugging method. The method includes steps: selecting corresponding coding and decoding modes, a forward error correction method and a check code for a link clock and a channel characteristic, then determining a pre-emphasis parameter of a TX side of a link through a backtracking method, experiencing a code stream learning process, and determining anadaptive configuration parameter through training at an RX side of the link. According to the method, strict sequential control of the training of the TX side and the RX side is performed, the link parameter configuration deviation caused by interference generated by bidirectional communication of the link is avoided, and the accuracy of the set parameter of the link can be effectively guaranteed;furthermore, the TX side performs backtracking training on the pre-emphasis parameter currently selected by the link according to an error reporting condition of the FEC decoding of the RX side link,the parameter configuration selected by each time of training can be determined according to the characteristic of the link, and the training efficiency is improved. The method is applicable to various router backboards, and automatic debugging of various link parameters is realized for high-rate 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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IPC IPC(8): H03M9/00
CPCH03M9/00H03M13/3707
Inventor 李强
Owner SANECHIPS TECH CO LTD
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