Optical Transceiver Controller Self-Testing via Internal Loopbacks
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Solution Overview
Problem
Existing optical transceiver microcontrollers lack efficient self-testing capabilities, requiring external devices and connections, which increases testing time and costs, and burdens host computing systems.
Innovation Solution
An optical transceiver control module with internalized loopbacks, featuring a processor, memory, and a configurable switch, allows for self-testing by coupling output terminals to input terminals, enabling diagnostics without external devices or connections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If external devices and connections are used for testing optical transceiver microcontrollers, then testing can be performed, but testing time increases and costs increase
Solution Approach 1:
The patent merges the testing function with the microcontroller itself by integrating loopback paths and test circuits within the control module. This allows the microcontroller to test itself without requiring separate external testing equipment, thereby reducing testing time while maintaining comprehensive testing capability.
Solution Approach 2:
The microcontroller is designed to perform self-testing through internal loopback mechanisms. The control module can autonomously route signals through internal paths and evaluate its own functionality without external intervention, eliminating the time required for external device setup and operation.
2Reliability
If external devices and connections are used for testing optical transceiver microcontrollers, then testing can be performed, but costs increase
Solution Approach 1:
The testing functionality is merged into the microcontroller design itself through integrated loopback paths and test circuits. This eliminates the need for expensive external testing equipment and specialized connections, thereby reducing manufacturing and testing costs while maintaining reliable testing capability.
Solution Approach 2:
By enabling the microcontroller to perform self-testing through internal mechanisms, the patent eliminates costs associated with external testing devices, setup, and operation. The self-service approach reduces both capital equipment costs and operational testing costs.
3Reliability
If external devices are used for testing, then diagnostics can be performed, but host computing system resources are burdened
Solution Approach 1:
The microcontroller performs self-diagnostics autonomously using internal loopback paths and test circuits. This self-service capability eliminates the need for host computing system involvement in the testing process, thereby reducing host system complexity and resource burden while maintaining comprehensive diagnostics capability.
4Reliability
If special external connections or wiring are implemented, then diagnostics can be performed, but device complexity increases
Solution Approach 1:
The patent merges the diagnostics functionality into the existing microcontroller architecture through internal loopback paths. This integration eliminates the need for special external connections or wiring, thereby reducing device complexity while maintaining full diagnostics capability through the use of existing internal signal paths.
Data Source
AI summary
An operational optical transceiver microcontroller configured to initiate a self-test using internalized loop backs. The microcontroller includes a memory, at least one processor and a number of input and output terminals. The output terminals are coupled to internally corresponding input terminals by a configurable switch. The memory receives microcode that, when executed by the processor, causes the microcontroller to close the switches so as to internally connect the output and input terminals. A signal is then asserted on the output terminal. This signal loops back and is received by the input terminal. The processor may then detect the microcontroller's response to the signal.