Optical receiving and transmitting module, optical transmitting device and optical transmitting method

Abstract

The invention discloses an optical receiving and transmitting module, an optical transmitting device and an optical transmitting method, wherein the optical receiving and transmitting module is matched with a linking device and comprises a connecting unit, a drive unit, an optical transmitting unit and an optical receiving unit; the connecting unit is used for being coupled with the linking device and is provided with an indicating element; when the connecting unit is coupled with the linking device, the indicating element generates an indicating signal; the drive unit is coupled with the connecting unit so as to receive the indicating signal and output a control signal according to the indicating signal; the optical transmission unit is coupled with the drive unit so as to receive the control signal and is driven by the control signal to output a first optical signal; and the optical receiving unit is coupled with the drive unit and transmits the received second optical signal to the drive unit. Therefore, the linking training sequence can be carried out after the connecting unit is determined to be coupled with the linking device, and thereby a host can be prevented from entering into a failure mode due mistaken connection.

Description

technical field [0001] The present invention relates to an optical transceiver module, in particular to an optical transceiver module applied to a universal serial bus. Background technique [0002] With the development of optical transmission technology, the advantages of optical fiber transmission in transmission bandwidth, transmission distance and anti-interference ability have made optical transceiver modules more and more widely used. Due to the advantages of optical transmission technology, more and more applications now hope to replace traditional copper transmission lines with optical transceiver modules and optical cables to connect existing hosts (Host) and devices (Device), making traditional interfaces such as fast peripherals A host with a Component Interconnect Standard (PCIE) interface specification or a Universal Serial Bus version 3.0 (USB 3.0) interface specification can also perform optical fiber communication with the device through the optical transceiv...

AI Technical Summary

Problems solved by technology

When the host-side optical transceiver module has been connected to the host, but no device is connected to the connector of the device-side transceiver module, the device-side optical transceiver module has been powered by the optical cable, so it will drive the above steps S110 to S170, wherein, when the host When polling, it can be detected that there is a differential terminal impedance between the differential transmission signal terminals TX±, so the host will mistakenly recognize that a device is plugged in, and then initiate a link training sequence to establish a link with the device, but at this time the other end of the optical cable In fact, there is no device connected to the optical transceiver module of the device through the connector, so the host cannot receive any response, and the host enters the disable mode as a result.

In order to remove this failure mode, the user usually has to perform cumbersome settings or restart the host computer, causing inconvenience to the user.

[0007] Therefore, how to provide an optical transceiver module, an optical transmission device and an optical transmission method, which can prevent the host from performing a link training sequence due to misjudgment when the device is not connected to the equipment-side optical transceiver module, thereby causing the host to enter the failure mode, has become one of the important topics

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