Method for on-line identifying small packaged hot connecting and disconnecting module

An electrical module, hot-swappable technology, applied in electrical components, electromagnetic wave transmission systems, line transmission components and other directions, can solve the problems of increasing the processing difficulty of SFP electrical modules, reducing the reliability of SFP electrical modules, and increasing the cost of SFP electrical modules. , to achieve simple and reliable online identification, increase processing difficulty, and reduce reliability.
CN1889401AInactive Publication Date: 2007-01-03HUAWEI TECH CO LTD
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
HUAWEI TECH CO LTD
Publication Date
2007-01-03
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

This invention discloses a method for identifying on-line SFP electric modules, which connects the first and second test pins of a SFP module in short-circuit, when a control unit of a monoboard the SFP module places tests that the module has been plugged in the monoboard, said method includes the following steps: A, the control unit transmits a preset test signal to the first test pin of the SFP module by the pin of its own transmitting test signals, B, the control unit receives the fed back signals from the second test pin of the module by its pin receiving test signals and judges if said fed back signal is the preset signal, if so, it judges that the SFP module plugged in the monoboard current is an electric module, otherwise, it's not.
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Description

technical field

[0001] The invention relates to an interface module identification technology, in particular to a method for online identification of small-package hot-swappable (SFP) electrical modules. Background technique

[0002] In the field of high-speed optical interface and electrical interface transmission, SFP modules have been widely used as optical / electrical transceiver modules. SFP modules have the advantages of small size and support for hot swapping, including SFP electrical modules and SFP optical modules. Generally, the SFP module and the control unit are plugged into the same board, and the control unit controls the sending and receiving of the SFP module.

[0003] The SFP module provides a custom pin, the MOD-DEF0 pin, which is generally used to output the presence signal. The MOD-DEF0 pin is grounded inside the module, and a pull-up resistor, such as a 10K pull-up resistor, is connected outside the module. After the SFP module is inserted into a board,...

Claims

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