TW201421246A - Method for transiting signals, system of transferring signals and expansion card - Google Patents

Abstract

A method for transiting signals is disclosed. The method for transiting signals allows a mother board to communicate with a control chip on an expansion card. The mother board includes at least one first transmit port header with a plurality of pins having different function definitions. The expansion card includes a second transmit port header used to electrically connect to the first transmit port header. The method for transiting signals includes the following steps: detecting whether the second transmit port header electrically connects to the first transmit port header; if the second transmit port header electrically connects to the first transmit port header, transferring the function definitions of the pins, such that the first transmit port header can be used to detect the expansion card and execute signals communication between the mother board and the control chip.

Description

Signal communication method, signal conversion system and expansion card

The invention relates to a method for signal communication, in particular to a method for signal communication between a motherboard and a Thunderbolt chip disposed on the expansion card.

One of the latest and fastest I/O high-speed transmission interfaces - the "Thunderbolt" transmission interface, because of its dedicated control chip (Thunderbolt chip), which has some control status signals and cannot pass through the traditional transmission interface (eg Peripheral Component Interconnect Express, PCI). -E) Communicate with the motherboard. Therefore, the traditional method is to solder the Thunderbolt chip directly to the motherboard and transfer the control status signals of these parts directly to the chip set. The practice is inelastic in its use, so the following practices have been adopted.

A new approach is to solder the Thunderbolt chip to an expansion card and insert the expansion card into the expansion slot of the motherboard in a conventional card; however, the above must be The special control status signal mentioned is additionally connected to a special slot on the motherboard, through which the control status signal is transferred. However, although the method can provide an extension of the function of the user by externally inserting the card, the method must additionally set a special slot mentioned above on the motherboard (not the slot of the existing general motherboard). As a result, the motherboard must be redesigned so that the expansion card with the "Thunderbolt" transmission interface cannot be applied to the existing motherboard without the special slot. on.

Therefore, it is necessary to invent a new method so that the Thunderbolt transmission interface can be supported by extending the card without changing the slot and circuit design of the existing motherboard.

SUMMARY OF THE INVENTION A primary object of the present invention is to provide a method for performing signal communication between a motherboard and a control chip disposed on an expansion card.

Another main object of the present invention is to provide a signal conversion system that allows a motherboard to perform signal communication with a control chip disposed on an expansion card.

Still another object of the present invention is to provide an expansion card that is provided with a control chip and that can communicate with the motherboard through a transmission port.

To achieve the above object, the signal communication method of the present invention is used to perform signal communication between a motherboard and a control chip disposed on an expansion card. The motherboard includes a first transmission port connector having at least one pin having a plurality of different function definitions, and the expansion card includes a second transmission port connector for electrically connecting the first transmission port connector. The signal communication method includes the following steps: detecting whether the second transmission port connector is electrically connected to the first transmission port connector; and if the second transmission port connector is electrically connected to the first transmission port connector, changing the first transmission port connector The function definition of the plurality of pins is such that the first port can be used to identify the expansion card and perform signal communication between the motherboard and the control chip.

According to another embodiment of the present invention, the signal communication method of the present invention includes the steps of: receiving a conversion instruction; and changing a function definition of the plurality of pins of the first transmission port according to the conversion instruction to make the first transmission The connector can be used to identify the expansion card and perform signal communication between the motherboard and the control chip.

The signal conversion system of the present invention is used to perform signal communication between a motherboard and a control chip disposed on an expansion card. The motherboard includes a first transmission port connector having at least one pin having a plurality of different function definitions, and the expansion card includes a second transmission port connector for electrically connecting the first transmission port connector. The signal conversion system includes a detection module and a conversion module. The detection module is configured to detect whether the second transmission port connector is electrically connected to the first transmission port connector, and the conversion module is used to be the second transmission port. When the connector is electrically connected to the first transmission port connector, the function definition of the plurality of pins of the first transmission port connector is changed, so that the first transmission port connector can be used to identify the expansion card and perform signal communication between the motherboard and the control chip. .

According to another embodiment of the present invention, the signal conversion system of the present invention includes a receiving module and a conversion module, wherein the receiving module is configured to receive a conversion command, and the conversion module is configured to change the first transmission according to the conversion instruction. The functional definition of the plurality of pins of the connector is such that the first port can be used to identify the expansion card and perform signal communication between the motherboard and the control chip.

The expansion card of the present invention is used for electrically connecting to a motherboard. The motherboard includes a first transmission port having a plurality of different function definitions. The expansion card includes a control chip and a second transmission port. The control chip system and the motherboard communicate with each other through a control status signal; the second transfer port is electrically connected to the control chip and is electrically connected to the first transfer port connector. When the definition of the plurality of pins of the first transmission port is changed, and can be used to identify the expansion card and perform signal communication between the motherboard and the control chip, the control The signal can be transmitted by the second transmission port and the first transmission port.

The above and other objects, features and advantages of the present invention will become more <

Please refer to Figures 1 to 3 below. 1 is a schematic diagram of the expansion card of the present invention inserted into the motherboard; FIG. 2 is a system architecture diagram of the first embodiment of the signal conversion system of the present invention; FIG. 3 is the first embodiment of the expansion card of the present invention. A schematic diagram of the corresponding connection between the second transmission port and the pin of the first transmission port on the motherboard.

As shown in FIG. 1 and FIG. 2, the expansion card 90 of the present invention is electrically connected to a motherboard 80. The motherboard 80 is provided with an expansion slot 81, a chip set 82, a central processing unit (CPU), a memory 84, and an input/output controller 85 (Super I/O). And a first transmission port connector 86 having at least one pin having a plurality of different function definitions. In an embodiment of the present invention, the first transmission port connector 86 includes a serial port connector (COM port header, hereinafter referred to as a first sequence port connector 861) and an infrared communication port connector 862 (IR header), but the present invention does not Limited. Since the functions of the components disposed on the motherboard 80 and the electrical connection between the components are not different from those of the existing motherboard, it is well known to those of ordinary skill in the art. I am not going to repeat them.

As shown in FIG. 3, the first serial 埠 joint 861 includes nine legs, each of which has a different functional definition, wherein the first sequence 埠 joint 861 It includes a transmission data pin (numbered pin 3), a clear send pin (number 8 pin) and a ring indicator pin (number 9 pin). Since the sequence is a common component in the field of computer technology, the functional definition and use of each pin are well known to those skilled in the art, and therefore will not be described herein.

The infrared communication port connector 862 includes five pins, each of which has a different function definition (and may also have no function), wherein the infrared communication port connector 862 includes a receiving data pin (numbered first pin). . Similarly, since infrared communication is a common component in the field of computer technology, the functional definition and use of each pin are well known to those skilled in the art, and therefore will not be described herein.

As shown in FIG. 1 , the expansion card 90 can be inserted into the expansion slot 81 of the motherboard 80 so that data between the expansion card 90 and the motherboard 80 can be transmitted through the expansion slot 81 . The expansion card 90 includes a control chip 91, a second transfer port 92, and a transport port 94.

The control chip 91 communicates with the motherboard 80 via control state signals; in a particular embodiment of the invention, the control wafer 91 is a Thunderbolt wafer. Since the lightning chip is an existing chip and is an element well known to those skilled in the art, it will not be described again.

The second transfer port 92 is electrically connected to the control chip 91 and can be electrically connected to the first transfer port 86 via the transmission line 93. In one embodiment of the present invention, the second transfer port joint 92 includes a serial port joint (hereinafter referred to as a second sequence port joint 921), but the invention is not limited thereto.

As shown in FIG. 3, the second serial port connector 921 also has nine pins, except that the function definition of the portion of the pin of the second sequence port connector 921 is set to other functions, rather than the general sequence. The function originally set by the foot of the 埠 connector. The function definition of each pin of the second serial port connector 921 of the expansion card 90 of the present invention is as follows:

Among them, the NC in the table means that the foot does not have any function. As shown in the above table and FIG. 3, in an embodiment of the present invention, the second serial port connector 921 includes a power receiving signal receiving pin (numbered pin 3) and a ground pin (number 5 pin). ), a start signal receiving pin (No. 7 pin), a reply signal output pin (No. 8 pin) and a notification signal output pin (No. 9 pin).

The power-on signal receiving pin is electrically connected to the transmission data pin of the first serial port connector 861. The start signal receiving pin of the second serial port connector 921 is used to electrically connect the data receiving pin of the infrared communication port connector 862. The reply signal output pin of the second serial port connector 921 is used to electrically connect the clear send pin of the first serial port connector 861. Second sequence 埠 joint 921 The notification signal output pin is used to electrically connect the bell indicator pin of the first serial port connector 861. The function of the second sequence 埠 joint 921, the first serial 埠 joint 861 and the infrared communication 埠 joint 862 will be described in more detail below.

The transmission port 94 is configured to provide an external device (not shown) and to insert the expansion card 90 into the expansion slot 81, so that the external device can perform data transmission with the motherboard 80.

As shown in FIG. 2, in the first embodiment of the present invention, the signal conversion system 1 of the present invention includes a detection module 10, a conversion module 20, a notification module 30, a response module 40, and a driving module 50. And event detection module 60. In the specific embodiment of the present invention, each of the above modules is implemented by a software program, and the signal conversion system 1 is stored in the memory 84 on the motherboard 80; when the computer is turned on, the central processing unit 83 is loaded. And the signal conversion system 1 is executed. Specifically, the signal conversion system 1 can perform a specific function described below by writing a specific function program command in a Basic Input Output System (BIOS), but the signal conversion system 1 of the present invention also It is not excluded that it can be achieved in other ways.

The detecting module 10 is configured to detect whether the second transfer port connector 92 is electrically connected to the first transfer port connector 86. In an embodiment of the present invention, when the second transmission port connector 92 is electrically connected to the first transmission port connector 86, the input/output controller 85 on the motherboard 80 generates an inductive signal; the detection module 10 can borrow Whether the second transmission port connector 92 is electrically connected to the first transmission port joint 86 is determined by detecting whether the sensing signal is generated.

The conversion module 20 is configured to change the plurality of pins of the first transfer port 86 when the second transfer port 92 is electrically connected to the first transfer port 86. Functional definition. The function definitions for changing the plural positions are described in more detail below.

The notification module 30 is configured to cause the motherboard 80 to transmit a power-on notification signal to the control chip 90 when the power of the motherboard 80 is turned on, thereby informing the control chip 90 that the power of the motherboard 80 is turned on.

The response module 40 is configured to cause the control chip 90 to return a reply signal after the control chip 90 receives the power-on notification signal, so that the motherboard 80 confirms the state of the control chip 90.

The driving module 50 is configured to cause the motherboard 80 to transmit a power-on signal to the control chip 90 to turn on the control chip 90.

The event detecting module 60 is configured to enable the control chip 91 to transmit a notification signal to the motherboard 80 when an external device (not shown) is electrically connected to the expansion card 90, thereby notifying the motherboard 80 that the external device has electrical properties. Connect the expansion card 90.

Referring next to Fig. 4, a system architecture diagram of a second embodiment of the signal conversion system of the present invention is shown.

As shown in FIG. 4, in the second embodiment of the present invention, the signal conversion system 1 includes a receiving module 70, a conversion module 20, a notification module 30, a response module 40, a driving module 50, and event detection. Module 60.

In the second embodiment of the present invention, the receiving module 70 is configured to receive a conversion instruction input by a user. The conversion module 20 is configured to change the function definition of the plurality of pins of the first transmission port 86 according to the conversion command. In a specific embodiment, a specific function program instruction can be written in the basic input/output system to provide a user to input a conversion instruction when entering the basic input/output system when the computer is turned on; when the signal conversion system 1 receives the transfer After the instruction is changed, the function definition of the plurality of pins of the first transfer port connector 86 is changed according to the conversion command. The function of the notification module 30, the response module 40, the driving module 50 and the event detecting module 60 of the signal conversion system 1 in the second embodiment is the same as that of the signal conversion system described in the first embodiment. 1 is no different, so I won't go into details here.

Please refer to FIG. 5 and FIG. 6 next. 5 is a first step flow chart of the first embodiment of the signal communication method of the present invention; and FIG. 6 is a flow chart of the second step of the first embodiment of the signal communication method of the present invention.

As shown in FIG. 5 and FIG. 6, which is a flow chart of the first embodiment of the signal communication method of the present invention, the steps of the signal communication method of the present invention will be described below with reference to FIGS. 1 to 3. It should be noted that although the signal conversion system 1 of the first embodiment of the present invention is taken as an example to describe the signal communication method of the present invention, the signal communication method of the present invention is not used in the foregoing signal conversion system 1 limit.

As shown in FIG. 5, step 501 is first performed to detect whether the second transmission port connector is electrically connected to the first transmission port joint.

As shown in FIG. 1 and FIG. 2, when the second serial port connector 921 is electrically connected to the first serial port connector 861 and the infrared communication port connector 862 by the transmission line 70, the input/output controller 85 generates an inductive signal; The detecting module 10 can determine whether the second serial port connector 921 is electrically connected to the first serial port connector 861 and the infrared communication port connector 862 by detecting whether the sensing signal is generated.

Then, step 502 is executed to change the function definition of the plurality of pins of the first transmission port.

When it is detected that the second sequence 埠 connector 921 has been electrically connected to the first sequence埠 When the connector 861 and the infrared communication port 862 are connected, the conversion module 20 defines the function of the plurality of pins of the infrared communication port 862, and is changed from the function of the original general infrared communication port to the function of inputting and outputting a specific signal. The definition is such that the infrared communication port connector 862 can be used to recognize the expansion card 90 and perform signal communication between the motherboard 80 and the control chip 91. The table below shows the difference between the function definitions of the multiple pins of the infrared communication port connector 862.

As can be seen from the above table, the receiving data pin (that is, the pin number 1) used to receive the data is converted into a pin that can be used to output the power-on signal by the conversion of the conversion module 20.

As mentioned above, the receiving data pin of the infrared communication port connector 862 (the pin number No. 1) is electrically connected to the starting signal receiving pin of the second serial port connector 921 (ie, the pin number 7). Therefore, when the function definition of the pin of the infrared communication port 862 is changed, the number 1 of the pin can be used as the start signal between the motherboard 80 and the control chip 91 (ie, one of the aforementioned control state signals). The output pin position, so that the boot signal sent by the motherboard 80 can be transmitted through the infrared communication port 862 when the device is turned on. The pin numbered 1 is transmitted to the pin 7 of the second serial port connector 921, and the power-on signal is transmitted to the control chip 91.

As shown in Fig. 1 and Fig. 3, due to the pin design of the serial port, only the pins numbered 3, 4 and 7 are the pin outputs. However, since the three pins are used as the pin for selecting the connector function at the end of the input/output controller 85 (commonly known as the strapping pin), if the three pins are used to output the boot signal, it will be caused when the computer is turned on. The voltage level of the output power-on signal is different from the voltage level originally set to be output, so that the external device of the transmission port 94 plugged into the expansion card 90 cannot be detected by the motherboard 80; When using the pin of the serial port as the power-on signal output pin, use the pin No. 1 of the infrared communication port connector 862 as the pin for the power-on signal output.

Similarly, when it is detected that the second serial port connector 921 has been electrically connected to the first sequence port connector 861 and the infrared communication port connector 862, the conversion module 20 also functions as a plurality of pins of the first sequence port connector 861. The definition, defined by the function of the original general serial port, is changed to a function definition that can be used to input and output a specific signal, so that the first serial port connector 861 can be used to recognize the expansion card 90 and execute between the motherboard 80 and the control chip 91. Signal communication. The table below is the difference between the functional definition of the plurality of feet of the first sequence 埠 joint 861 before and after the change.

It can be seen from the above table that the transmission data pin (that is, the number 3 pin) originally used to transmit data of the first serial port connector 861 is converted into a pin position for outputting the power signal by the conversion of the conversion module 20. The first sequence 埠 connector 861 originally clears the transmit pin (i.e., the pin number 7), and via the conversion of the conversion module 20, it becomes a pin that can be used to receive the reply signal. The original ringing indicator pin 861 of the first sequence 埠 connector 861 (i.e., the pin number 8) is converted to a pin position for receiving the notification signal via the conversion of the conversion module 20.

As mentioned above, since the transmission data pin of the original first serial port connector 861 (i.e., the pin number 3) is connected to the power receiving signal of the second sequence port connector 921 (i.e., the number 3 pin) Electrically connected, therefore, when the functional definition of the pin of the first serial port connector 861 is changed, the power-on signal (i.e., one of the aforementioned control state signals) sent by the motherboard 80 can be obtained by the first sequence. The third leg of the connector 861 and the third pin of the second serial connector 921 are transmitted to the control chip 91.

Since the pins of the serial port are only the pins of numbers 3, 4 and 7 are the pins for outputting the signal, and the control chip 91 can only recognize the signal of the low level, and the first sequence on the motherboard 80 The 埠 joint 861 only has the number 3 and 7 feet to generate a low level signal, so the first sequence is selected埠 The third pin of the connector 861 is used as a pin for outputting a power-on signal.

As mentioned above, the bell indicating pin of the first serial port connector 861 (i.e., the pin number 9) is connected to the notification signal output pin of the second serial port connector 921 (i.e., the pin number 9). The connection is made. Therefore, after the pin function definition is converted, the motherboard 80 can receive the notification signal transmitted by the control chip 91 through the pin 9 of the first serial port connector 861.

Since the notification signal generated by the control chip 91 must be connected to a pin that supports the System Management Interrupt (SMI), the only pin in the pin header of the sequence that supports the system management interrupt is the number 9 pin. Therefore, it is the only choice for receiving the notification signal pin.

Similarly, the clear transmission pin of the first serial port connector 861 (ie, the pin number 8) is electrically connected to the reply signal output pin of the second serial port connector 921 (ie, the pin number 8). Therefore, after the pin function definition is converted, the motherboard 80 can receive the reply signal transmitted by the control chip 91 through the pin 8 of the first serial port connector 861.

Since the reply signal is an input to the motherboard 80, and the pin of the serial port connector has the pin numbers 1, 2, 6, 8, and 9 as the input, the selection number is 8 The pin is used as the pin for receiving the reply signal.

Once the second serial port connector 921 is electrically connected to the first serial port connector 861 and the infrared communication port connector 862, and the functions of the first sequence port connector 861 and the infrared communication port connector 862 are defined by the signal conversion system 1 After the conversion described above, the motherboard 80 and the control chip 91 can be transmitted through the first serial port connector 861 and the infrared communication port 862. And the second serial port connector 921 performs the transmission of the control status signal (including the power-on signal, the reply signal, the power-on signal, and the notification signal) described below.

As shown in FIG. 6, step 601 is executed: after the power of the motherboard is turned on, the motherboard is caused to transmit a power-on notification signal to the control chip.

After the above steps are completed, if the user turns on the power of the motherboard 80, the motherboard 80 will send a power-on notification signal, and the power-on notification signal will be received by the infrared communication port 862 number 1 (ie, receiving) The data pin) and the start signal receiving pin of the second serial port connector 921 (i.e., the pin number 7) are transmitted to the control chip 91, thereby informing the control chip 90 that the power of the motherboard 80 is turned on.

Step 602 is executed to enable the control chip to return a reply signal to the motherboard.

When the control chip 91 receives the power-on notification signal transmitted from the motherboard 80, the control chip 91 sends a reply signal, and the reply signal is outputted by the second sequence connector 921. The pin 8 and the pin 8 of the first serial port connector 861 (ie, the clear pin) are transmitted back to the motherboard 80, so that the motherboard 80 confirms the state of the control chip 90.

Step 603 is executed to enable the motherboard to transmit a power-on signal to the control chip.

After the steps 601 and 602 are completed, the motherboard 80 sends a power-on signal, and receives the power-on signal of the third pin (ie, the data pin) and the second serial port 921 of the first serial port 861. The pin position (i.e., the numbered pin 3) transmits the power-on signal to the control chip 91, so that the control chip 90 performs the power-on action.

Step 604: When an external device is electrically connected to the expansion card, The control chip transmits a notification signal to the motherboard.

As shown in FIG. 1 and FIG. 3, once the control chip 91 is ready and the power is turned on, if an external device (not shown) is inserted into the transfer port 94 on the expansion card 90, the control chip 91 generates a notification. The signal, the notification signal will be output by the second serial port 921, the notification signal output pin (ie, the number 9 pin) and the first sequence 埠 connector number 9 pin (ie, the bell indicating pin). It is transmitted to the motherboard 80 to notify the motherboard 80 that the external device has been plugged into the transport port 94 on the expansion card 90.

Finally, please refer to FIG. 7 for a flow chart of the steps of the second embodiment of the signal communication method of the present invention.

First, step 701 is executed: receiving a conversion instruction.

In the second embodiment of the present invention, the user can perform the setting of the functions of the first serial port connector 861 and the infrared communication port connector 862 through the setting interface of the input/output system. When the user selects the function definition of switching the pin of the first serial port connector 861 and the infrared communication port connector 862, the signal conversion system 1 receives the conversion command input by the user.

Step 702 is executed to change the function definition of the pin of the first transmission port.

After receiving the conversion command input by the user, the signal conversion system 1 changes the function definition of the pin of the first serial port connector 861 and the infrared communication port connector 862 according to the conversion command. Since the function definition of the changed foot is the same as that described in the foregoing first embodiment, it will not be described herein. In addition, once the functional definition of the pin of the first serial port connector 861 and the infrared communication port connector 862 is changed, the first sequence port connector 861 and the infrared communication port connector 862 can be used to perform signals between the motherboard 80 and the control chip 91. Communication, also That is, as in the first embodiment, the signal conversion system 1 will then perform the aforementioned steps 601 to 604.

To sum up, the present invention, regardless of its purpose, means and efficacy, shows its distinctive features of the prior art. You are requested to review the examination and express the patent as soon as possible. It should be noted that the various embodiments described above are merely illustrative for ease of explanation, and the scope of the invention is intended to be limited by the scope of the claims.

1‧‧‧Signal Conversion System

10‧‧‧Detection module

20‧‧‧Transition module

30‧‧‧Notification module

40‧‧‧Response module

50‧‧‧Drive Module

60‧‧‧ Event Detection Module

70‧‧‧ receiving module

80‧‧‧ motherboard

81‧‧‧Expansion slot

82‧‧‧ chipsets

83‧‧‧Central processor

84‧‧‧ memory

85‧‧‧Input and output controller

86‧‧‧First transfer joint

861‧‧‧First sequence 埠 connector

862‧‧‧Infrared communication 埠 connector

90‧‧‧Extension card

91‧‧‧Control chip

92‧‧‧Second transfer joint

921‧‧‧Second serial 埠 connector

93‧‧‧ transmission line

94‧‧‧Transportation

1 is a schematic view of the expansion card of the present invention when it is inserted into a motherboard.

2 is a system architecture diagram of a first embodiment of a signal conversion system of the present invention.

3 is a schematic diagram showing the corresponding connection between the second transfer port connector on the expansion card of the present invention and the pin of the first transfer port connector on the motherboard.

4 is a system architecture diagram of a second embodiment of the signal conversion system of the present invention.

FIG. 5 is a flow chart of the first step of the first embodiment of the signal communication method of the present invention.

Figure 6 is a flow chart showing the second step of the first embodiment of the signal communication method of the present invention.

Figure 7 is a flow chart showing the steps of the second embodiment of the signal communication method of the present invention.

1‧‧‧Signal Conversion System

10‧‧‧Detection module

20‧‧‧Transition module

30‧‧‧Notification module

40‧‧‧Response module

50‧‧‧Drive Module

60‧‧‧ Event Detection Module

80‧‧‧ motherboard

81‧‧‧Expansion slot

82‧‧‧ chipsets

83‧‧‧Central processor

84‧‧‧ memory

85‧‧‧Input and output controller

86‧‧‧First transfer joint

861‧‧‧First sequence 埠 connector

862‧‧‧Infrared communication 埠 connector

90‧‧‧Extension card

91‧‧‧Control chip

92‧‧‧Second transfer joint

921‧‧‧Second serial 埠 connector

94‧‧‧Transportation

Claims (22)

A signal communication method for performing signal communication between a motherboard and a control chip disposed on an expansion card, the motherboard including at least one first transmission port having a plurality of different function definitions, and the expansion The card includes a second transmission port connector for electrically connecting the at least one first transmission port connector. The signal communication method includes the following steps: detecting whether the second transmission port connector is electrically connected The at least one first transfer port connector; and if so, changing a function definition of the plurality of pin positions such that the at least one first transfer port connector can be used to identify the expansion card and execute between the motherboard and the control chip Signal communication. The signal communication method of claim 1, wherein the motherboard is provided with an input/output controller, and when the second transmission connector is electrically connected to the at least one first transmission connector, the input/output controller An inductive signal is generated to detect whether the second transmission port is electrically connected to the at least one first transmission port connector by detecting whether the sensing signal is generated. The signal communication method of claim 1, wherein the at least one first transmission port joint comprises a first serial port connector and an infrared communication port connector, and the second transmission port connector comprises a second sequence. Connector. The method of signal communication as described in item 3 of the patent application scope includes the following steps: After the power of the motherboard is turned on, the motherboard sends a boot notification signal to the control chip, wherein the boot notification signal receives one of the data pin and the second serial port connector through one of the infrared communication port connectors. The boot signal receiving pin is transmitted to the control chip; after the control chip receives the boot notification signal, the control chip returns a reply signal to the motherboard, so that the motherboard confirms the state of the control chip, wherein the The reply signal is sent back to the motherboard by one of the second serial port connector and the one of the first serial port connector; the host board transmits a power signal to the control chip, In order to enable the control chip to be powered on, wherein the power-on signal is transmitted to the control chip by one of the first serial port connector and one of the second sequence connector; When the external device is electrically connected to the expansion card, the control chip transmits a notification signal to the motherboard, wherein the notification signal is transmitted by the second sequence. One of the first notification signal output pin serial port and one of the first joint pin ring indicated transmitted to the motherboard. The method of signal communication as described in claim 1, wherein the control wafer is a lightning chip (Thunderbolt wafer). A signal communication method for performing signal communication between a motherboard and a control chip disposed on an expansion card, the motherboard including at least one first transmission port having a plurality of different function definitions, and the expansion The card includes a second transmission port connector for electrically connecting the at least one first transmission port connector. The signal communication method includes the following steps: Receiving a conversion instruction; and changing a function definition of the plurality of pins according to the conversion instruction, so that the at least one first transmission connector can be used to identify the expansion card and perform signal communication between the motherboard and the control chip . The signal communication method of claim 6, wherein the at least one first transmission port joint comprises a first serial port connector and an infrared communication port connector, and the second transmission port connector comprises a second sequence. Connector. The method for signal communication as described in claim 7 further includes the following steps: when the power of the motherboard is turned on, causing the motherboard to transmit a power-on notification signal to the control chip, wherein the power-on notification signal is One of the infrared communication port connectors receives a data pin and one of the second serial port connectors transmits a signal to the control chip; and when the control chip receives the power-on notification signal, the control chip is returned to the control chip. Signaling to the motherboard, so that the motherboard confirms the state of the control chip, wherein the reply signal clears the sending leg by one of the second serial port connector and the one of the first serial port connector The bit is transmitted back to the motherboard; the host board transmits a power-on signal to the control chip to enable the control chip to be powered on, wherein the power-on signal transmits the data pin and the first by the first serial port connector One of the two serial port connectors transmits a power receiving signal to the control chip; When an external device is electrically connected to the expansion card, the control chip transmits a notification signal to the motherboard, wherein the notification signal informs the signal output pin and the first by one of the second serial port connectors One of the sequence 埠 connectors rings to indicate that the pin is transmitted to the motherboard. The method of signal communication as described in claim 6 wherein the control wafer is a lightning chip (Thunderbolt wafer). A signal conversion system for performing signal communication between a motherboard and a control chip disposed on an expansion card, the motherboard including at least one first transmission port having a plurality of different function definitions, and the expansion The card includes a second transmission port for electrically connecting the at least one first transmission port. The signal conversion system includes: a detection module for detecting the second transmission Whether the 埠 connector is electrically connected to the at least one first transmission 埠 connector; and a conversion module for changing the function of the plurality of pins when the second transmission 埠 connector is electrically connected to the at least one first transmission 埠 connector The method is such that the at least one first transmission port connector can be used to identify the expansion card and perform signal communication between the motherboard and the control chip. The signal conversion system of claim 10, wherein the motherboard is provided with an input/output controller, and the input/output controller is electrically connected to the at least one first transmission connector when the second transmission connector is electrically connected An inductive signal is generated to detect whether the second transmission port is electrically connected to the at least one first transmission port connector by detecting whether the sensing signal is generated. The signal conversion system of claim 10, wherein the at least one first transmission port joint comprises a first sequence port and an infrared communication port, and the second port includes a second sequence. Connector. The signal conversion system of claim 12, wherein one of the infrared communication port contacts is electrically connected to one of the second serial port connectors, and the second sequence is connected to the pin; A reply signal output pin is electrically connected to one of the first serial port connectors to clear the sending pin position; one of the first serial port connectors transmits a data pin to be electrically connected to one of the second serial port connectors, and the power receiving signal receiving pin One of the second serial port connectors informs that the signal output pin is electrically connected to one of the first sequence port connectors to indicate the pin position. The signal conversion system of claim 10, wherein the control wafer is a Thunderbolt wafer. A signal conversion system for performing signal communication between a motherboard and a control chip disposed on an expansion card, the motherboard including at least one first transmission port having a plurality of different function definitions, and the expansion The card includes a second transmission port connector for electrically connecting the at least one first transmission port connector, the signal conversion system includes: a receiving module for receiving a conversion command; and a a conversion module, configured to change a function definition of the plurality of pins according to the conversion instruction, so that the at least one first transmission connector can be used to identify the expansion card, and perform signal communication between the motherboard and the control chip . The signal conversion system of claim 15, wherein the at least one first transmission port joint comprises a first serial port connector and an infrared communication port connector, and the second transmission port connector comprises a second sequence. Connector. The signal conversion system of claim 16, wherein one of the infrared communication port contacts is electrically connected to one of the second serial port connectors, and the second sequence is connected to the pin; A reply signal output pin is electrically connected to one of the first serial port connectors to clear the sending pin position; one of the first serial port connectors transmits a data pin to be electrically connected to one of the second serial port connectors, and the power receiving signal receiving pin One of the second serial port connectors informs that the signal output pin is electrically connected to one of the first sequence port connectors to indicate the pin position. The signal conversion system of claim 15, wherein the control wafer is a lightning chip (Thunderbolt wafer). An expansion card for electrically connecting to a motherboard, the motherboard comprising at least one first transmission port having a plurality of different function definitions, the expansion card comprising: a control chip, a system and a host The board communicates through a control status signal; and a second transmission port is electrically connected to the control chip and electrically connected to the at least one first port; when the at least one first port is connected When the function definition of the plurality of pins is changed, and the expansion card can be identified, and the signal communication between the motherboard and the control chip is performed, the control status signal can be obtained by the second transmission port and the at least one A transfer port is used for transmission. The expansion card of claim 19, wherein the at least one first transmission port joint comprises a first serial port connector and an infrared communication port connector, and the second transmission port connector comprises a second sequence. Connector. The expansion card of claim 20, wherein the second serial port connector comprises: a power-on signal receiving pin for electrically connecting one of the infrared communication port connectors to receive the data pin; and a reply signal An output pin for electrically connecting one of the first serial port connectors to clear the transmitting pin; a power receiving signal receiving pin for electrically connecting one of the first serial port connectors to transmit the data pin; and a notification signal The output pin is electrically connected to one of the first serial port connectors to indicate the pin position. The expansion card of claim 19, wherein the control wafer is a Thunderbolt wafer.