CN203338238U

CN203338238U - Multifunctional pin circuit device

Info

Publication number: CN203338238U
Application number: CN2013201501215U
Authority: CN
Inventors: 黄仲达; 黄逸杰; 邹国彦
Original assignee: Kunda Computer Technology Kunshan Co Ltd; Mitac International Corp
Current assignee: Kunda Computer Technology Kunshan Co Ltd; Mitac International Corp
Priority date: 2013-03-29
Filing date: 2013-03-29
Publication date: 2013-12-11
Anticipated expiration: 2023-03-29

Abstract

The utility model provides a multifunctional pin circuit device which comprises a detecting module, a delay module and a power supply control module. The detecting module is used for detecting the connecting state of periphery elements on the outer portion of a system, judging whether the system needs to provide power for the periphery elements and deciding the output type of a pin. The delay module is electrically connected with the detecting module and is used for delay power supply for the periphery elements. The power supply control module and the delay module are electrically connected. When the detecting module determines that the system needs to provide power for the periphery elements, the power supply control module provides power for the periphery elements.

Description

Multi-functional pin circuitry device

[Ji Intraoperative field]

The utility model relates to a kind of circuit arrangement, relates in particular to a kind of circuit arrangement of realizing multi-functional pin.

[Bei Jing Ji Intraoperative]

Along with scientific and technological progress, the expandability of PC day by day increases.The user can add extra interface card or equipment again according to demand separately.The motherboard of the PC of prior art (main board) can obtain corresponding numbering pin to peripheral element, to confirm its state.

The existing flow process that detects the numbering pin can be divided into software aspect and hardware aspect.At first the operation workflow of software is described, motherboard, when off-position, can not supply the electric power of operation because the element on motherboard receives, and motherboard does not now possess operating capability.When motherboard, during at power supply state, motherboard moves basic input/output system (Basic Input/Output System is called for short BIOS), in order to the pin that obtains each peripheral element and analyzed, next illustrates the function mode of hardware, motherboard is when "on" position, BIOS can obtain pin to connected peripheral element by the south bridge wafer on motherboard, and an output terminal is all arranged in each peripheral element, one end of output terminal and the multi-usage output and input pins on the south bridge wafer (General Purpose Input Output Pin, be called for short the GPIO pin) be connected, the south bridge wafer is accepted the pin of each peripheral element by the GPIO pin, yet, a GPIO pin can only mean two states, therefore in order to learn the state of all peripheral elements, except basic pin demand, also need the extra detecting pin and that increases to select pin, wherein detect pin for detection of peripheral element insertion system and whether need power supply whether, select pin for select this pin output USB or 12C for system, because the pin setting is more, contact more unstable, cost is high simultaneously, area occupied is large, if during a plurality of peripheral element fault that motherboard connects simultaneously, will be seriatim the pin of peripheral element be detected, comparatively inconvenience.

[summary of the invention]

In view of the above problems, the utility model provides a kind of circuit arrangement of multi-functional pin, a pin of electric connection system, by detecting module, Postponement module and energy supply control module, formed, wherein, detecting module is in order to detect the connection status of this system outer periphery element, and then judges whether this system needs power and determine the output type of this pin to this peripheral element; Postponement module and described detecting module are electrically connected, in order to postpone power supply; Energy supply control module and described Postponement module are electrically connected, and when described detecting module judges that this system need to be powered to this peripheral element, this energy supply control module is to this peripheral element power supply.

Especially, when described detecting module detects that system is outside connects peripheral element, judge that this system need to power to peripheral element; Otherwise, when described detecting module does not detect the outside connection of system peripheral element, judge that this system does not need to power to peripheral element.

Especially, described detecting module comprises a P type metal-oxide half field effect transistor, when described system during in power supply state, and this P type metal-oxide half field effect transistor conducting, when described system during in power supply state not, this not conducting of P type metal-oxide half field effect transistor.

Compared to prior art, the circuit arrangement of multi-functional pin of the present utility model, by Reduced Design, realize the function that in the past needed two pins to realize by a pin, reduced the quantity of peripheral element pin, both cost-saving, again convenient the detection.

[accompanying drawing explanation]

The connection block diagram that Fig. 1 is multi-functional pin circuitry device of the present utility model;

The circuit diagram of the detecting module that Fig. 2 is multi-functional pin circuitry device of the present utility model.

[embodiment]

Multi-functional pin circuitry device of the present utility model, be electrically connected the pin of a system, purpose is to realize detecting function and selection function by this pin, refer to Fig. 1, multi-functional pin circuitry device 2 of the present utility model is comprised of detecting module 11, Postponement module 12 and energy supply control module 13, wherein said detecting module 11 is in order to detect the connection status of this system 1 outside, and then judges whether this system 1 needs power and determine the output type of this pin to this peripheral element; Postponement module 12 is electrically connected with described detecting module 11, in order to delay system 1, to this peripheral element, powers; Energy supply control module 13 is electrically connected with described Postponement module 12, and when described detecting module 11 these peripheral elements of judgement need to be powered, this energy supply control module 13 is to this peripheral element power supply.

In the present embodiment, described peripheral element comprises IDE device, SATA device, USB device, interface card etc., when described detecting module 11 detects system 1 connection outer periphery element, judges that this system 1 need to be to this peripheral element power supply; When described detecting module 11 does not detect system 1 connection outer periphery element, judge that this system 1 does not need to this peripheral element power supply.

Refer to Fig. 2, circuit diagram for the detecting module of multi-functional pin circuitry device of the present utility model, its detecting function and selection function are realized by this detecting module, as described in Figure, described detecting module 11 comprises a P type metal-oxide half field effect transistor 111(and is called for short p-MOS), utilize the characteristic of the suitable pressure reduction of p-MOS, set up middle voltage quasi position (3.3V) between high voltage level (12V) and low-voltage level (0V), when detecting module 11 judgement systems 1 do not connect peripheral element, VDD_ADP end voltage-to-ground is 12V, now the V of p-MOS _gS>=0, these P type metal-oxide half field effect transistor 111 not conductings; When detecting module 11 judgement systems 1 connect peripheral element, this multi-functional pin arrangement monitors this peripheral element, and now VDD_ADP end voltage-to-ground is 12V, if the GPIO end is 3.3V, the V of p-MOS _gS<0, this P type metal-oxide half field effect transistor is in conducting state, and now the peripheral element of connecting system 1 is the USB device, and the output type of this pin is USB; If the GPIO end is 0V, the V of p-MOS _gS<0, this P type metal-oxide half field effect transistor 111 is in conducting state, and the peripheral element of now connecting system 1 access is the 12C device, and the output type of this pin is 12C.

Multi-functional pin circuitry device of the present utility model, utilize the suitable differential pressure characteristics of p-MOS, the detecting function of system (determine and whether power) and selection function (output USB or 12C) realize by a pin, use a pin to realize the function that in the past needed two pins to realize, effectively reduced the quantity of pin.

The above describes in detail embodiment of the present utility model and embodiment by reference to the accompanying drawings, but the utility model is not limited to the above-described embodiment and examples, in the ken possessed those skilled in the art, can also make a variety of changes without departing from the concept of the premise utility.

Claims

1. multi-functional pin circuitry device, be electrically connected the pin of a system, it is characterized in that,

Detecting module, in order to the connection status of the peripheral element of detecting this system outside, and then judge whether this system needs power and determine the output type of this pin to this peripheral element;

Postponement module, be electrically connected with described detecting module, in order to postpone to this peripheral element power supply;

Energy supply control module, be electrically connected with described Postponement module, and when described detecting module judges that this peripheral element need to be powered, this energy supply control module is to this peripheral element power supply.

2. multi-functional pin circuitry device according to claim 1, is characterized in that, when described detecting module detects system connection outer periphery element, this system need to be to this peripheral element power supply; When described detecting module does not detect system connection outer periphery element, this system does not need to this peripheral element power supply.

3. multi-functional pin circuitry device according to claim 1, it is characterized in that, described detecting module comprises a P type metal-oxide half field effect transistor, when described system during in power supply state, this P type metal-oxide half field effect transistor conducting, when described system during in power supply state not, this not conducting of P type metal-oxide half field effect transistor.

4. multi-functional pin circuitry device according to claim 3, is characterized in that, when described P type metal-oxide half field effect transistor conducting, the suitable differential pressure characteristics of system based on P type metal-oxide half field effect transistor selected this pin output USB or I2C.