Device for switching universal serial bus (USB) interface and standard serial port

A technology of USB interface and standard serial port, which is applied in the field of interface conversion devices, can solve the problems of difficult on-site debugging for operators and the lack of configuration of traditional serial ports, etc., and achieve the effect of convenient operation and maintenance

Inactive Publication Date: 2013-05-01
PHICOMM (SHANGHAI) CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, notebook computers are generally only equipped with USB ports and not traditi

Method used

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  • Device for switching universal serial bus (USB) interface and standard serial port

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Embodiment Construction

[0020] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but not as a limitation of the present invention.

[0021] Such as figure 1 As shown, it is a schematic structural diagram of an embodiment of a device for switching a USB interface and a standard serial port in the present invention, wherein,

[0022] The device includes a main control board, a programmable logic device, a serial port to USB module, a front panel USB connector and a power detection module; the serial port to USB module is respectively connected to the front panel USB connector and the programmable logic device; the power supply The detection modules are respectively connected to the programmable logic device and the USB connector on the front panel; the programmable logic device is connected to the main control board and / or the CPU module of each service board; the device is connected to the external USB interface through the US...

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Abstract

The invention discloses a device for switching a universal serial bus (USB) interface and a standard serial port, which belongs to an interface switching device, and the device comprises a main control panel, a programmable logic device, a serial port transform USB module, a front panel USB connector and a power supply detection module; the serial port transform USB module is respectively connected with the front panel USB connector and the programmable logic device; the power supply detection module is respectively connected with the programmable logic device and the front panel USB connector; the programmable logic device is connected with a central processing unit (CPU) module of the main control panel; the device is connected with an external USB interface through the front panel USB connector; the conversion of a transistor-transistor logic (TTL) signal and a USB signal can be realized through the serial port transform USB module; and the programmable logic device detects whether the front panel USB connector is connected with the external USB interface or not through the power supply detection module. The device has the beneficial effects that flexibility for switching the USB interface and the serial port can be realized, the function of a traditional device such as Ethernet passive optical network (EPON) rack equipment can be expanded, and the equipment can be convenient to operate and maintain.

Description

technical field [0001] The invention relates to an interface conversion device, in particular to a device for switching a USB interface and a standard serial port. Background technique [0002] The EPON rack equipment has the complete functions and characteristics of a large-capacity carrier-grade optical line terminal platform and an aggregation switch. It can be applied to all application scenarios of the aggregation switch. It has complete two-layer and three-layer switching functions and can provide various telecommunications services. The main control single board in the EPON rack equipment mainly completes the data aggregation and distribution of each service card, and at the same time collects and manages the routing information from each service card, and can monitor the status of the fan and power supply in real time. [0003] The main control single board and each service single board in the EPON rack equipment contain CPU modules, and the main control single board...

Claims

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Application Information

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IPC IPC(8): G06F13/40
Inventor 甘文斌
Owner PHICOMM (SHANGHAI) CO LTD
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