KR100227513B1 - Method of connecting computer peripheral component and its apparatus - Google Patents

Abstract

The present invention relates to a method and a device for connecting a computer peripheral device to a computer by inserting a PCI expansion card into a PCI slot, wherein the pins of the PCI slot is separated from the PC main board at the beginning of the insertion of the PCI slot, PCI expansion card Detects the fact that the PCI expansion card is inserted and the type by using the principle of voltage distribution between the second resistor and the first resistor in the PC main board so as to include a first resistor having a different resistance value according to the type. . According to the present invention, the PCI expansion card and the PC main board are separated through the cue switch or the power FET before the fact that the PCI expansion card is inserted and the type of the PCI expansion card to be inserted into the main controller of the computer are expanded even when the computer is in use. Not only can the card be inserted, it also protects the PC's main logic from the electrostatic discharge (ESD) that can enter through the slot, and also blocks the EMI (Electro-Magnetic Interface) and leakage current from the slot. There are advantages to it.

Description

How to connect peripheral device of computer and its device

The present invention relates to a method for connecting a peripheral device of a computer through a PCI expansion card and a PCI slot, and a device thereof.

Peripheral Component Interconnection (PCI) slots and cards are peripheral connectivity specifications that are local bus specifications for IBM-compatible PCs. IBM-compatible personal computers can't integrate all the features each user needs at the time of designing the computer, so they can use the expansion card and its connector slots to get the features they need even after they are assembled. I can add it.

Conventional PCI cards and slots for connecting them to a computer do not use logic to power on or off. Therefore, there is no way to protect the main logic of the PC from the electro-static discharge (ESD) that can enter through the slot, nor can it prevent the EMI (Electro-Magnetic Interface) and leakage current emitted from the slot. . Therefore, conventionally, an expansion card cannot be inserted into a PCI slot of a computer that is powered and operated. To insert an expansion card, the expansion card must be inserted with the computer turned off. This is only possible during the initial boot of the computer. Therefore, the user must restart the computer. This impedes the implementation of the complete form of Plug and Play (P & P), which is currently designed for the convenience of users.

The present invention is to solve the problems of the prior art as described above, an object of the present invention is to insert the expansion card even when the power is applied to the computer operating, it is possible to detect the type of the inserted card In addition, the present invention provides a method and a device for connecting peripheral devices of a computer that can partially apply or block power to an expansion card slot.

1 is a diagram illustrating a main board, a PCI slot, and a PCI expansion card of a computer;

Figure 2 is a block diagram of a PCI expansion card connection device according to the present invention.

* Explanation of symbols for the main parts of the drawings

10: PC main board 20: PCI slot

30: PCI expansion card 40: voltage level converter

50: A / D conversion unit 60: main control unit

70: Q-switch or power FET

In order to achieve the above object, the present invention provides a method for connecting a computer peripheral device to a computer by inserting a PCI expansion card into a PCI slot, the other pins except for two pins in the PCI slot from the PC main board The first resistor is located between two unassigned pins of the PCI expansion card and the main resistance of the computer connected to the first resistor when the PCI expansion card is inserted. Detecting the insertion of the PCI expansion card by increasing the potential applied to the second resistor among the input voltages through a second resistor in the board, and detecting the type of the PCI expansion card inserted from the value of the potential applied to the second resistor; And initializing by connecting the pins of the PCI slot into which the PCI expansion card is inserted from the information detected by the above steps with the PC main board. It provides a method for connecting a computer peripheral device, characterized in that it comprises a.

In addition, in order to achieve the above object, the present invention provides a device for connecting a peripheral device to a computer by inserting a PCI expansion card into the PCI slot, other pins other than the two pins of the PCI slot from the PC mainboard Means for blocking, a first resistor located between two unassigned pins of the PCI expansion card, the resistance of which is determined according to the type of PCI expansion card, and when the PCI expansion card is inserted, The voltage level converter which drives the second resistor in the main board according to the signal level of the main controller of the PC so that the insertion of the PCI expansion card can be detected by the rise of the potential applied to the second resistor, and the potential across the second resistor. An A / D converter for converting a value into a digital signal, and a fact that a PCI expansion card is inserted from a signal input from the voltage level converter and the A / D converter; If the type to provide a computer peripheral device connection, characterized in that including a main controller for controlling the cut-off means is a PCI expansion card to connect the pins of the inserted PCI slot and a PC motherboard.

Hereinafter, with reference to the accompanying drawings, a preferred embodiment of the present invention will be described in detail.

1 illustrates a main board, a PCI slot, and a PCI expansion card of a computer.

2 is a block diagram of a PCI expansion card connection device according to the present invention.

As shown in FIG. 2, the PCI expansion card 30 used in the PCI expansion card connection device according to the present invention further includes a first resistor R1 in addition to logic for a function unique to the expansion card. . The first resistor R1 has a unique value depending on the type of PCI expansion card. The first resistor R1 is connected to both ends of the unassigned two pins (Rsvd pins) P1 and P2. The PCI slot 20 has two corresponding pins P1 'and P2' connected to the two pins P1 and P2 of the PCI expansion card 30 to which the first resistor R1 is connected. Is separated from the PC main board 10 through a cue switch or power FET 70 so that the power and signal lines on the PCI slot 20 are separated from the PC main board 10.

The cue switch is one of the electronic logics for separating or connecting signals at both ends of a general electronic circuit. There is a low-capacity queue switch for separating / connecting signal lines and a large-capacity queue switch for separating / connecting power lines. The power FET may be used if the capacity exceeds. In the present invention, a cue switch or a power FET is used to separate signal and power lines connected to the main board 10 of the PC in the PCI slot 20.

The first pin P1 'of the two pins P1' and P2 'of the PCI slot 20 is a pin to which a power supply Vp is applied, and a PCI expansion card 30 is inserted into the PCI slot 20. In the state, when power Vp is applied to the first pin P1 ', the applied power Vp is a pin of the PCI expansion card 30 connected to the first pin P1' of the PCI slot 20 ( It passes through the first resistor (R1) through P1, and is connected to the second pin (P2 ') of the PCI slot 20 through the pin (P2) of the PCI expansion card (30).

The second pin P2 ′ of the PCI slot 20 is connected to the main board 10 having the main controller 60 of the computer.

The main controller 60 of the computer provides an interface for performing various control tasks between the computer and the peripheral device so that various peripheral devices connected to the computer can be connected to the computer system for use. With the development of integrated technology, a chipset that integrates interrupt control and direct memory access (DMA) control, previously implemented by individual logic or individual controllers, into a single IC, is the second most important chip in a computer after the central processing unit (CPU).

The apparatus according to the present invention checks the rise of the potential applied to the second resistor R2 and the second resistor R2 on the main board 10 by using the voltage division principle, and then the signal level of the main controller of the computer. And a voltage level converting section 40 for converting to? And an A / D converting section 50 for converting a potential value applied to the second resistor R2 into binary digits.

The second resistor R2 is connected to the second pin P2 'of the PCI slot 20 and the ground. In FIG. 2, the potential Vd at the point D corresponds to the voltage distribution according to the resistance values of the first and second resistors R1 and R2 when a power supply of Vp is applied through the first pin P1 '. The potential is determined by this.

When the PC is running, if any PCI expansion card is inserted, the potential at point D will rise momentarily. Therefore, by checking whether the potential at the point D rises, the insertion of the PCI expansion card can be known. In the present invention, the voltage level converter 40 is introduced.

The voltage level converter 40 checks whether the potential at the point D rises, and if the potential rises slightly, detects it and converts it to the signal level of the main controller 60. The converted signal level is input to the signal level according to whether the potential rises to a general purpose input (GPI) pin or a system management interrupt (SMI) pin among the input pins of the main controller 60.

When any PCI card is inserted during computer operation, the type of PCI expansion card to be inserted is determined from the potential value at point D. To this end, the present invention introduces an A / D conversion section 50 that converts the potential value at point D into binary bits.

According to the type of the PCI expansion card, the value of the first resistor R1 in the PCI expansion card can be varied, so that the voltage distributed between the first resistor R1 and the second resistor R2 varies. Therefore, by measuring the potential at point D, you can see the type of PCI expansion card inserted. Accordingly, the potential value measured by the A / D converter 50 as a digital signal is input to the main controller 60 through the serial communication channel.

The main control unit 60 receives the fact that a new PCI expansion card is inserted from the potential rising level signal from the voltage level converting unit 40, and the digital potential value at the point D from the A / D converting unit 50. The type of PCI expansion card inserted from the system is received. The main controller 60 turns on the power FET to apply power to the PCI main board 10 and the PCI slot 20 which is blocked from the above two pieces of information, and transmits and receives a signal through the PCI slot 20. Activate the cue switch.

Then, the PCI expansion card can be initialized to perform the functions of the PCI expansion card by initializing the inserted PCI expansion card through some hardware and software procedures during initial booting in order to enable the inserted PCI expansion card. have.

As described above, according to the method and device for connecting a peripheral device of the computer according to the present invention, before the fact that the PCI expansion card is inserted and the type of the PCI expansion card to be inserted into the main controller of the computer, the queue switch or the power FET is used. The PCI slot and PC motherboard are separated so that you can insert an expansion card while the computer is in use, as well as protect the main logic of the PC from electro-static discharge (ESD) that can enter through the slot. There is an advantage that can block the electromagnetic (Electro-Magnetic Interface) and leakage current emitted from the.

In addition, according to the method for connecting a peripheral device of a computer and the device according to the present invention, it is possible to know the type of PCI card to be inserted using voltage distribution, so that initialization can be effectively performed.

Claims (4)

A method of connecting a computer peripheral device to a computer by inserting a PCI expansion card into a PCI slot, the method comprising: disconnecting pins other than two pins from a PC main board in a PCI slot, and selecting a resistance value according to the type of PCI expansion card. A second resistor located between two non-assigned pins of the PCI expansion card and the second input voltage through a second resistor in the main board of the computer connected to the first resistor when the PCI expansion card is inserted. Detecting the insertion of the PCI expansion card by the rise of the potential applied to the resistance, detecting the type of the inserted PCI expansion card from the value of the potential applied to the second resistor, and the information from the information detected by the steps Connecting the computer peripheral device to the PCI expansion card by inserting the pins of the PCI slot into the PC main board Law. A device that connects peripherals to a computer by inserting a PCI expansion card into the PCI slot, the means for disconnecting the pins other than the two pins from the PCI slot from the PC motherboard, between two unassigned pins on the PCI expansion card. A first resistor whose resistance value is determined according to the type of the PCI expansion card, a second resistance in the main board of the computer connected to the first resistance when the PCI expansion card is inserted, and a potential applied to the second resistance. A voltage level converter which detects the insertion of the PCI expansion card by rising, an A / D converter which converts the value of the potential applied to the second resistor into a digital signal, and the voltage level converter and the A / D converter Recognizing the fact that the PCI expansion card is inserted from the signal input from the type and the type to control the blocking means to connect the pins of the PCI slot in which the PCI expansion card is inserted with the PC main board Computer peripherals apparatus as that characterized by comprising: a. 3. The device of claim 2, wherein said means for disconnecting pins other than the two pins of a PCI slot from the PC motherboard is a cue switch. 3. The device of claim 2, wherein said means for disconnecting pins other than the two pins of a PCI slot from the PC motherboard is a power FET.

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