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High-speed serial channel pre-emphasis adjusting method and device

A technology of high-speed serialization and adjustment method, applied in the field of communication, can solve the problems of high cost input and complicated realization process of pre-emphasis adjustment, and achieve the effect of low cost input, good adjustment effect and simple realization.

Active Publication Date: 2010-03-17
ZTE CORP
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AI Technical Summary

Problems solved by technology

[0006] Embodiments of the present invention provide a high-speed serial channel pre-emphasis adjustment method and device to solve the problems in the prior art that the implementation process of pre-emphasis adjustment is complicated and the cost is high.

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  • High-speed serial channel pre-emphasis adjusting method and device
  • High-speed serial channel pre-emphasis adjusting method and device

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Embodiment Construction

[0029] In the method for adjusting the pre-emphasis of the high-speed serial channel provided by the embodiment of the present invention, first, the influencing factors affecting the quality of the transmission signal in the high-speed serial channel are summarized.

[0030] For example, factors that affect the quality of transmitted signals may include one or a combination of the following factors: trace length, trace mode, trace impedance, vias, connector usage, board material, signal rate, and so on.

[0031] in, figure 1 In the case that other influencing factors are determined, the influence of the length of the trace on the quality of the transmission signal. from figure 1 It can be seen from the figure that, when other influencing factors remain unchanged, the longer the trace length, the greater the loss of the transmitted signal. As shown in the figure, the abscissa is the frequency, and the ordinate is the signal loss. Under the same frequency state, the signal lo...

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Abstract

The invention discloses a high-speed serial channel pre-emphasis adjusting method and a device. The method comprises the following steps: determining the factors influencing the quality of transmission signal in a high-speed serial channel to be tested and parameter information corresponding to the influencing factors; inputting each influencing factor and the parameter information thereof to a pre-built circuit model to generate an analog circuit corresponding to the high-speed serial channel to be tested; determining the signal attenuation situation in the high-speed serial channel to be tested in accordance with the generated analog circuit; and determining corresponding pre-emphasis parameters according to the determined signal attenuation situation. The pre-emphasis adjusting method has simple implementation and low cost investment, can directly carry out pre-emphasis adjustment aiming at the influencing factors of each high-speed serial channel, and has good adjustment effect.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a pre-emphasis adjustment method and device for predicting and adjusting pre-emphasis parameters of a high-speed serial channel, which relate to high-speed serial bus technology. Background technique [0002] With the increasing demand for information flow, high-speed serial bus technology, with its advantages of high speed, low pin count, and low power consumption, gradually replaces traditional parallel bus and becomes the mainstream of high-speed interface technology, and is widely used in electronic and communication products. . For example: typical applications include Gigabit Ethernet serial / deserializer (Gigabit Ethernet SERializer / DESerializer, GE SERDES), serial high-speed input and output (Serial Rapid IO, SRIO) bus, 10 Gigabit connection unit interface ( 10 Gigabit AttachmentUnit Interface, XAUI), etc., its transmission rate varies from 1.25Gbps to 10Gbps. [...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
Inventor 叶凯
Owner ZTE CORP
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