Optical Module Drive Circuit Auto-Configuration Without DSP
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Solution Overview
Problem
Optical modules without a digital signal processor (DSP) face inefficiencies and high error likelihoods due to manual configuration of drive circuit parameters for different transmission links, as they cannot adaptively set configuration parameters like conventional modules with DSPs.
Innovation Solution
A configuration method and system that utilizes a motherboard to automatically determine and send target link configuration information to an optical module, enabling it to configure its drive circuit based on port number information and a pre-set link configuration list, thereby eliminating manual configuration and reducing errors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a DSP is disposed in the optical module to enable adaptive configuration of CTLE parameters, then the adaptability and reliability are improved, but the power consumption and cost increase
Solution Approach 1:
The patent extracts the configuration function from the optical module itself and relocates it to the motherboard. The motherboard's management circuit now performs the adaptive configuration of drive circuit parameters based on link characteristics, while the optical module only needs to provide port number information. This eliminates the need for a DSP in the optical module, reducing power consumption while maintaining adaptability.
Solution Approach 2:
The patent introduces an intermediary management circuit on the motherboard that mediates between the optical module and the drive circuit configuration. This management circuit receives port number information from the optical module, determines appropriate link configuration information from stored data, and sends configuration commands to the drive circuit, thereby enabling adaptive configuration without requiring a DSP in the optical module.
2Device complexity
If manual configuration of drive circuit parameters is used in optical modules without DSP, then the device complexity is reduced, but the productivity and reliability deteriorate due to low efficiency and high error likelihood
Solution Approach 1:
The system enables semi-automatic configuration where the optical module automatically provides its port number information, and the motherboard's management circuit automatically determines and applies the appropriate configuration parameters. This self-service mechanism eliminates manual configuration steps, improving productivity and reliability while keeping the device complexity low since no DSP is required in the optical module.
3Device complexity
If manual configuration of drive circuit parameters is used in optical modules without DSP, then the device complexity is reduced, but the reliability worsens due to high likelihood of errors
Solution Approach 1:
The patent implements a feedback mechanism where the optical module provides port number information to the motherboard, which then uses this feedback to automatically select and apply the correct link configuration parameters. This closed-loop feedback system ensures accurate configuration without manual intervention, improving reliability while maintaining low device complexity by avoiding DSP implementation.
Data Source
AI summary
This application relates to a configuration method and system for a drive circuit in an optical module. The method includes: A motherboard obtains port number information of the optical module; determines target link configuration information based on a link configuration information list in the motherboard and the port number information of the optical module, where the link configuration information list includes port numbers of a plurality of ports on the motherboard and link configuration information of the plurality of ports; and sends the target link configuration information to the optical module, so that the optical module configures the drive circuit in the optical module based on the target link configuration information. According to embodiments of this application, the drive circuit in the optical module can be automatically configured. This helps improve configuration efficiency of the drive circuit in the optical module.