CN2816925Y

CN2816925Y - General bus detecting module

Info

Publication number: CN2816925Y
Application number: CN 200520008442
Authority: CN
Inventors: 赖嘉德
Original assignee: LAIJIADE INDUSTRY Co Ltd
Current assignee: LAIJIADE INDUSTRY Co Ltd
Priority date: 2005-03-22
Filing date: 2005-03-22
Publication date: 2006-09-13
Anticipated expiration: 2015-03-22

Abstract

The utility model provides a test module of a general bus. The utility model mainly comprises a circuit board which is provided with a peripheral connector of a universal bus (USB), a switchover circuit for the selection and the control of speeds, a low speed signal processor, a high speed signal processor, a voltage sampling and digital conversion circuit, a voltage stabilizing circuit of a power supply and a display control circuit for lamp numbers. According to the structure of the utility model, after the utility model is connected to a USB port of a PC main board to be tested, whether the functions of a USB host controller of the PC main board are normal can be detected. The utility model has the advantages of simple design and operation, setting and operating time saving in a large amount for engineering personnel and reduced waste in use owing to the capability of tandem connection of a plurality of groups of the test module of a general bus.

Description

The versabus test module

Technical field

Whether normal the utility model relates to a kind of versabus test module, relate in particular to a kind of USB master controller (Host controller) function test module of the PC of detection mainboard, detects especially for the PC mainboard of streamline.

Background technology

Because computing machine science and technology is maked rapid progress, no matter government bodies, private organization, still individual employed computing machine is all along with quick progress, correspondingly, computing machine with also more and more stress being connected of every peripheral equipment simple and fast, therefore, various connection specifications are arisen at the historic moment, at present more common connection specification have following several, it is respectively: versabus (USB:Universal Serial Bus), live wire (IEEE1394), infrared transmission (IrDA:Infrared Data Association) and blue bud wireless transmission (Bluetooth) or the like.Wherein, USB connects specification because of having plug and play (Plug﹠amp; Play), speed is fast, cost is low, support advantages such as real-time sound and image data transmission, after the USB2.0 specification is delivered, its transmission speed more can reach 480Mbs, compare with USB1.1 transmission speed 12Mbs and to have improved 40 times fully, more make USB interface become the popular standard interface of being accepted apace, certainly, also occur the peripheral equipment of many use USB interface as transmission interface on the market, it certainly also must be earlier through test before selling.Therefore, the utility model has designed and has been with the installation of a USB test module on the common computer, it supports UHCI (Universal Host Controller lnterface), OHCI (OpenHost Controller lnterface), EHCI three kinds of communications protocol such as (Enhanced Host Controller lnterface), and can be to low speed, full speed and three kinds of different transmission speeds of high speed are tested, and can learn voluntarily and produce one the cover selftest program, save the time that the engineering staff sets significantly, it not only designs and operates all quite simple, saved and set and time of operation, and can be connected in series many groups on demand and use and reduce waste on using.

The utility model content

The utility model purpose is to provide a kind of test module structure of versabus, and it not only designs and does all quite simply, has saved and has set and time of operation, and can be connected in series many groups on demand and use and reduce waste on using.

For reaching above-mentioned purpose, the utility model versabus test module mainly comprises a circuit board; This circuit board is provided with two groups of circuits that independently separate, can independently or simultaneously use, and comprise separately: USB neighboring connector, speed selected control commutation circuit, low speed signal processor, high-speed digital signal processor, voltage sample circuit, digital conversion circuit, power supply stabilization circuit and cresset display control circuit; In addition, between USB neighboring connector and speed selected control commutation circuit, be provided with a protection loop;

Described USB neighboring connector connects the input end of described speed selected control commutation circuit, the output terminal of described speed selected control commutation circuit is connected with the input end of low speed signal processor and high-speed digital signal processor respectively, described voltage sampling and digital conversion circuit are connected with the USB neighboring connector, after the voltage transitions of PC mainboard input to be measured becomes numerical data, importing described low speed signal processor and high-speed digital signal processor tests, and described low speed signal processor and high-speed digital signal processor also can be tested the data of other input, in the time of its processing, can export a signal to the cresset display control circuit, show the project of test at present, at last again with described test module gained data result, the testing software that is back to computer-internal is stored and is shown, and described test module is connected with external power source by a power supply stabilization circuit;

Described USB neighboring connector, the function that is used to test 6 PORT of USB1.1 specification, or the function of 10 PORT of test USB2.0 specification; Described protection loop is used to prevent the overtension of PC mainboard input to be measured, causes burning out inner other circuit and signal processor;

Described speed selected control commutation circuit is used to differentiate the speed of input signal, and low speed signal is directly imported in the low speed signal processor, and high speed signal changes high speed signal being input in the high-speed digital signal processor earlier behind input one control circuit again;

Described low speed signal processor is used for the integrated circuit that the USB1.1 signal is tested in decipher;

Described high-speed digital signal processor is used for the control correlation function of the conversion of access decipher, voltage signal of decipher test USB2.0 signal and test, peripheral circuit;

Described voltage sampling and digital conversion circuit are connected with described USB neighboring connector, after the voltage transitions of PC mainboard input to be measured becomes numerical data, import low speed signal processor or high-speed digital signal processor again;

Described power supply stabilization circuit has a protection loop and a voltage voltage division processing loop, and the security of protection internal circuit is avoided because of the excessive problem that causes circuit to damage of the voltage of external power source input;

Described cresset display control circuit has the LED bulbs of organizing different colours more, can be used to show the project of being tested at present, as low speed, full speed or high speed.

According to above-mentioned structure, earlier a versabus test module of the present utility model is connected with a computing machine, test procedure is imported in this computing machine, and utilize a USB cable that the USB port of USB neighboring connector with PC mainboard to be measured is connected, and with a transformer with after the joint of power supply stabilization circuit is connected, set up the test archives with automated manner or manual mode again, can carry out detection to PC mainboard to be measured, it not only designs and operates all quite simple, saved the time of setting and operating, and can be according to the quantity demand of determinand, constantly be connected in series and increase the quantity of U S B neighboring connector, reduce waste in the use; In addition, when its protection loop can be used to avoid by USB neighboring connector input external voltage, the chip that surging caused damaged.

Description of drawings

Fig. 1 is a circuit block diagram of the present utility model;

Fig. 2 is a use synoptic diagram of the present utility model;

Fig. 3 is a circuit diagram of the present utility model.

The figure number explanation:

Circuit board 1 external power source 2

USB neighboring connector 10 speed selected control commutation circuits 20

Low speed signal processor 30 high-speed digital signal processors 40

Voltage sampling and digital conversion circuit 50 power supply stabilization circuits 60

Cresset display control circuit 70 control circuits 21

Protection 11 voltage voltage division processing loops 61, loop

Embodiment

Describe preferred embodiment of the present utility model in detail with reference to accompanying

drawing

1,2,3.

The utility model versabus test module mainly comprises a circuit board 1;

This circuit board 1 is provided with two groups of circuits that independently separate, and can independently or simultaneously use, and include USB neighboring connector 10, speed selected control commutation circuit 20, low speed signal processor 30 separately; High-speed digital signal processor 40, voltage sampling and digital conversion circuit 50, power supply stabilization circuit 60 and cresset display control circuit 70 etc.;

Described USB neighboring connector 10 is connected to the input end of speed selected control commutation circuit 20, and speed is far controlled the output terminal of commutation circuit 20 and is connected with the input end of low speed signal processor 30 and high-speed digital signal processor 40 respectively, its voltage sampling and digital conversion circuit 50 are connected with USB neighboring connector 10, can be to be measured after the voltage transitions of PC mainboard input becomes numerical data, input low speed signal processor 30 and high-speed digital signal processor 40 are tested, and low speed signal processor 30 and high-speed digital signal processor 40 also can be tested the data of other input, in the time of its processing, can export a signal to cresset display control circuit 70, show the project of test at present, at last again with above-mentioned test module gained data result, the testing software that is back to computer-internal is stored and is shown, and above-mentioned test module is connected with external power source 2 by a power supply stabilization circuit 60;

Described USB neighboring connector 10, the function that is used to test 6 PORT of USB1.1 specification, or the function of 10 PORT of test USB2.0 specification; And have a protection loop 11, when being used to avoid by USB neighboring connector 10 input external voltages, the chip that surging caused damages;

Described speed selected control commutation circuit 20 is used for differentiating the speed of input signal, and its low speed signal is directly imported in the low speed signal processor 30, and high speed signal changes high speed signal being input in the high-speed digital signal processor 40 earlier behind input one control circuit 21 again;

Described low speed signal processor 30 is used for the integrated circuit that the USB1.1 signal is tested in decipher;

Described high-speed digital signal processor 40 is used for the correlation functions such as control of the conversion of access decipher, voltage signal of decipher test USB2.0 signal and test, peripheral circuit;

Described voltage sampling and digital conversion circuit 50 are connected with USB neighboring connector 10, can be to be measured after the voltage transitions of PC mainboard input becomes numerical data, import low speed signal processor 30 or high-speed digital signal processor 40 again;

Described power supply stabilization circuit 60 has a voltage voltage division processing loop 61, except that power supply is provided, also can protect the security of internal circuit, avoids the problem that causes circuit to damage because of voltage is excessive;

Described cresset display control circuit 70 has the LED bulbs of organizing different colours more, can be used to show the project of being tested at present, as low speed, full speed and high speed etc.

In sum, the utility model versabus test module, the design of its internal circuit not only designs and operates all quite simple, has saved the time of design and operation, and can be connected in series many groups on demand and use and reduce waste on using.

The foregoing description only is used to illustrate the utility model, and is not to be used to limit the utility model.

Claims

1. a versabus test module comprises a circuit board; It is characterized in that:

This circuit board is provided with two groups of circuits that independently separate, independently or simultaneously use, and comprise separately: USB neighboring connector, speed selected control commutation circuit, low speed signal processor, high-speed digital signal processor, voltage sample circuit, digital conversion circuit, power supply stabilization circuit and cresset display control circuit; Wherein,

Described USB neighboring connector, the function that is used to test 6 ports of USB1.1 specification, or the function of 10 ports of test USB2.0 specification; Also comprise a protection loop, this protection loop is used to prevent the overtension of PC mainboard input to be measured, causes burning out internal circuit and signal processor;

Described power supply stabilization circuit has a protection loop and a voltage voltage division processing loop, the security of protection internal circuit;

Described cresset display control circuit has the LED bulbs of organizing different colours more, can be used to show the project of being tested at present.