TWI733614B - Communication interface control system and method thereof - Google Patents

Abstract

A communication interface control system and method are provided in the present invention. The communication interface control system includes an interface multiplexing module including a plurality of Inter-Integrated Circuit interfaces, a management control module and a logic processing module. Each of the Inter-Integrated Circuit interfaces has an Inter-Integrated Circuit information and are communicated to a data processing device which has a device information. When the management control module is configured to connect to the communication device, the management control module transmits a device selection communication command to the logic processing module for making the logic processing module figure out the data processing device which the management control module chooses according to a device selection comparison table, then the logic processing module make the Inter-Integrated Circuit interface which is communicated to the data processing device communicate to the management control module so that the data processing device is communicated to the management control module.

Description

Communication interface control system and method

The present invention relates to a communication interface control system and method, in particular to a communication interface control system and method for controlling a serial communication interface.

With the advancement of network technology, servers are playing an indispensable role in people’s lives. Generally speaking, in server systems, serial communication interfaces (Inter-Integrated Circuit, I ² C) are commonly used. In order to communicate with multiple data processing devices, the server’s system will usually be multiplexed through a serial communication interface that includes a serial communication interface. The module makes a communication connection.

Please refer to the first figure. The first figure shows a block diagram of the prior art communication interface system of the present invention. As shown in the first figure, the communication interface system PA1 includes a management control module PA11 and a serial communication interface multiplexing processing module PA12, wherein the serial communication interface multiplexing processing module PA12 includes a plurality of serial communications The interfaces PA121, PA122, PA123, and PA124 are connected to the management control module PA11. The serial communication interfaces PA121, PA122, PA123, and PA124 are correspondingly connected to the data processing devices PA2, PA3, PA4, and PA5. The serial communication interface multiplexing processing module PA12 can be a packaged chip of 74HC4052PW, for example.

Among them, when the management control module PA11 wants to connect to one of the data processing devices PA2, PA3, PA4, and PA5, it generally executes the switching of the serial communication interfaces PA121, PA122, PA123, and PA124 corresponding to the connection by itself. In order to achieve the purpose of establishing a connection. However, in practice, the data processing devices PA2, PA3, PA4, and PA5 are not only the four shown in the embodiment, and there may even be dozens of them. In the serial communication interface multiplex processing module PA12 series When the serial communication interfaces PA121, PA122, PA123 and PA124 are limited, if you need to add more connected data processing devices PA2, PA3, PA4, and PA5, you need to add more and the serial communication interface multiplex processing module PA12 Due to the limited number of pins of the management control module PA11, if the number of pins of the management control module PA11 is not enough, the number of serial communication interface multi-processing modules PA12 may not be smoothly increased, so it generally increases The problem of limited capacity of data processing devices. In addition, since the prior art only switches the connection through the management control module PA11, the switching under multiple data processing devices is prone to unstable and switching errors. Therefore, the existing technology still has room for improvement.

In view of the prior art, the management control module of the existing system generally has the problems of limited ability to increase the number of data processing devices and easy switching errors. One of the main objectives of the present invention is to provide a communication interface control system and method thereof, which solve the problems described in the prior art by further communicating the logic processing module to the serial communication interface multiplexing processing module.

In order to solve the problems of the prior art, the necessary technical means adopted by the present invention are to provide a communication interface control system, which includes a serial communication interface (Inter-Integrated Circuit, I ² C) multiplexing processing module, and a management control module. Group and a logic processing module. The serial communication interface multiplex processing module includes a multiplex processing unit and a plurality of serial communication interfaces. The serial communication interfaces are electrically connected to the multiplex processing unit, and each serial communication interface has a serial communication interface. Information, and are respectively connected to a data processing device with device connection information.

The management control module includes a first storage unit and a first processing unit. The first storage unit stores device connection information of the data processing devices communicatively connected with each serial communication interface. The first processing unit is electrically connected to the first storage unit, and is used to retrieve all data from the first storage unit when a connection is established with a data processing device that is communicatively connected to one of the serial communication interfaces. Corresponding device connection information, and send a device selection communication command containing the corresponding device connection information through an information transmission protocol.

The logic processing module includes a second storage unit and a second processing unit. The second storage unit stores a device selection comparison table containing the correspondence between each serial communication interface information and each device connection information. The second processing unit is electrically connected to the second storage unit, and is communicatively connected to the first processing unit and the multiplexing processing unit, and is used to analyze the corresponding device according to the device selection comparison table when receiving a device selection communication instruction The serial communication interface information corresponding to the connection information is transmitted, and a trigger signal including the above-mentioned corresponding device connection information and the corresponding serial communication interface information is sent to the multiplexing processing unit.

Wherein, when the multiplex processing unit receives the trigger signal, the serial communication interface corresponding to the corresponding serial communication interface information is switched to be communicatively connected to the first processing unit, and through the corresponding serial communication interface The data processing device that triggers the communication connection of the corresponding serial communication interface sends a connection signal to the first processing unit through the corresponding serial communication interface, so that the first processing unit establishes a connection with the data processing device .

On the basis of the above-mentioned necessary technical means, an auxiliary technical means derived from the present invention is that the serial communication interface multiplexer module is a serial communication interface multiplexer (I ² C Multiplexer, I ² C MUX), which manages The control module is a baseboard management controller (Baseboard Management Controller, BMC), the logic processing module is a complex programmable logic device (CPLD), and the information transmission protocol is a serial communication interface, serial universal One of the input/output interface and the Low Pin Count (LPC) interface.

In order to solve the problem of the prior art, the necessary technical means adopted by the present invention is to provide another communication interface control method, which is implemented by using the above-mentioned communication interface control system. In the communication interface control method, firstly use the first processing unit to the first storage unit of the management control module to retrieve the device connection information corresponding to the data processing device to be connected, and send it out through the information transmission protocol. The device selection communication command corresponding to the device connection information mentioned above. Then use the second processing unit of the logic processing module to receive the device selection communication command, so that the logic processing module parses out the serial communication interface information corresponding to the above corresponding device connection information according to the device selection comparison table, and sends out the serial communication interface information that contains There are trigger signals for the corresponding device connection information and the corresponding serial communication interface information.

Finally, a multiplex processing unit is used to receive the trigger signal, and the multiplex processing unit switches the serial communication interface corresponding to the corresponding serial communication interface information to be communicatively connected to the first processing unit, and passes through the corresponding serial communication interface. The communication interface triggers the data processing device communicatively connected to the corresponding serial communication interface to send a connection signal to the first processing unit through the corresponding serial communication interface, so that the first processing unit and the data processing device establish a connection Wire.

On the basis of the above-mentioned necessary technical means, an auxiliary technical means derived from the present invention is that the serial communication interface multiplexer module is a serial communication interface multiplexer (I ² C Multiplexer, I ² C MUX), which manages The control module is a Baseboard Management Controller (BMC), the logic processing module is a Complex Programmable Logic Device (CPLD), and the information transmission protocol is a serial communication interface, serial universal One of the input/output interface and the Low Pin Count (LPC) interface.

As mentioned above, the communication interface control system and method provided by the present invention utilize the logic processing module to communicate with the serial communication interface multiplex processing module, and switch the serial communication interface through the logic processing module. Therefore, the management control module can keep more pins for other functional devices to connect, and can effectively solve the problem of switching errors.

The specific embodiments of the present invention will be described in more detail below in conjunction with the schematic diagrams. According to the following description and the scope of patent application, the advantages and features of the present invention will be more clear. It should be noted that the drawings all adopt a very simplified form and all use imprecise proportions, which are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention.

Please refer to the second figure. The second figure shows a block diagram of the communication interface control system provided by the preferred embodiment of the present invention. As shown in the figure, the communication interface control system 1 provided by the present invention includes a serial communication interface (Inter-Integrated Circuit, I ² C) multiplexing processing module 11, a management control module 12, and a logic processing module. Group 13.

The serial communication interface multiplexing processing module 11 is, for example, a serial communication interface multiplexer (I ² C Multiplexer, I ² C MUX), and includes a multiplexing processing unit 111 and a plurality of serial communication interfaces 112, 113 , 114 and 115. The multiplexing processing unit 111 can be, for example, an existing processor. The serial communication interfaces 112, 113, 114, and 115 are electrically connected to the multiplexing processing unit 111. Each of the serial communication interfaces 112, 113, 114, and 115 respectively has A series of communication interface information are respectively connected to a data processing device 2, 3, 4, and 5 with a device connection information.

Among them, the data processing devices 2, 3, 4, and 5 are, for example, thermal sensors, connection slots, hard disks, processors (such as Central Processing Unit (CPU) and Microcontroller Unit (MCU)) and At least one of the Nanqiao chips, but not limited to this in other embodiments. In the preferred embodiment of the present invention, the serial communication interface 112 is communicatively connected to the data processing device 2, the serial communication interface 113 is communicatively connected to the data processing device 3, and the serial communication interface 114 is communicatively connected to the data processing device 4. The serial communication interface 115 is communicatively connected to the data processing device 5.

In addition, the communication connection referred to in the preferred embodiment of the present invention refers to a wired communication connection, but it may also be a wireless communication connection in other embodiments. In addition, the serial communication interface information is, for example, network address information, and the device connection information is, for example, the device device number, device name, and device model, but it is not limited to this.

The management control module 12 is, for example, a baseboard management controller (BMC), and includes a first storage unit 121 and a first processing unit 122. The first storage unit 121 is, for example, an existing memory, and stores device connection information of the data processing devices 2, 3, 4, and 5 that are communicatively connected to the serial communication interfaces 112, 113, 114, and 115. The first processing unit 122 may be an existing processor, for example, and is electrically connected to the first storage unit 121.

The logic processing module 13 is, for example, a complex programmable logic device (CPLD), and includes a second storage unit 131 and a second processing unit 132. The second storage unit 131 can be, for example, an existing memory, and stores a device selection comparison table 1311 containing the correspondence between each serial communication interface information and each device connection information, that is, the second storage unit 131 stores each string The serial communication interface information of the serial communication interfaces 112, 113, 114, and 115 and the device connection information of the data processing devices 2, 3, 4, and 5 are stored as a device selection comparison table 1311 in a corresponding manner.

Among them, in the preferred embodiment of the present invention, the serial communication interface information of the serial communication interface 112 can be defined as serial communication interface information A, for example, and the serial communication interface information of the serial communication interface 113 can be defined as serial communication, for example. Interface information B, serial communication interface information of serial communication interface 114 can be defined as serial communication interface information C, for example, serial communication interface information of serial communication interface 115 can be defined as serial communication interface information D, for example, data processing The device connection information of device 2 can be defined as device connection information 1211, the device connection information of data processing device 3 can be defined as device connection information 1212, and the device connection information of data processing device 4 can be defined as device connection Information 1213, the device connection information of the data processing device 5 can be defined as device connection information 1214, and the device selection comparison table 1311 can be, for example, the following table, but is not limited to this. Serial communication interface information Device connection information Serial communication interface information A Device connection information 1211 Serial communication interface information B Device connection information 1212 Serial communication interface information C Device connection information 1213 Serial communication interface information D Device connection information 1214

The second processing unit 132 may be an existing processor, and is electrically connected to the second storage unit 131, and communicatively connected to the first processing unit 122 and the multiplexing processing unit 111.

The first processing unit 122 of the management control module 12 is to communicate with the data processing device 2 connected to one of the serial communication interfaces 112, 113, 114, and 115 (the serial communication interface 112 is taken as an example below) When a connection is established, the corresponding device connection information 1211 is retrieved from the first storage unit 121, and a device selection communication command S1 containing the corresponding device connection information 1211 is sent through an information transmission protocol. Wherein, the information transmission protocol can be, for example, one of a serial communication interface, a serial universal input output interface, and a low pin count (LPC) interface, but it is not limited to this in other embodiments.

When the second processing unit 132 receives the device selection communication command S1, it parses out the serial communication interface information A corresponding to the above-mentioned corresponding device connection information 1211 according to the device selection comparison table 1311, and includes a corresponding serial communication interface information A corresponding to the above-mentioned corresponding device connection information 1211. The device connection information 1211 and the corresponding trigger signal S2 of the serial communication interface information A are sent to the multiplexing processing unit 111.

When the multiplexing processing unit 111 receives the trigger signal S2, it switches the serial communication interface 112 corresponding to the corresponding serial communication interface information A to be communicatively connected to the first processing unit 122, and through the corresponding serial communication interface 112. The communication interface 112 triggers the data processing device 2 communicatively connected to the corresponding serial communication interface 112 to send a connection signal S3 to the first processing unit 122 through the corresponding serial communication interface 112, so that the first processing The unit 122 establishes a connection with the data processing device 2.

For another example, if the first processing unit 122 wants to establish a connection with the data processing device 3 communicatively connected to the serial communication interface 113, it will retrieve the device connection corresponding to the data processing device 3 from the first storage unit 121 Information 1212, and send the device selection communication command S1 including the device connection information 1212 to the second processing unit 132 through the information transmission protocol.

After the second processing unit 132 receives the device selection communication command S1 containing the device connection information 1212, it will find in the device selection comparison table 1311 that the device connection information 1212 corresponds to the serial communication interface information B, and will further include The trigger signal S2 of the device connection information 1212 and the serial communication interface information B is sent to the multiplexing processing unit 111.

When the multiplex processing unit 111 receives the trigger signal S2, it switches the serial communication interface 113 corresponding to the serial communication interface information B to be communicatively connected to the first processing unit 122, and triggers the serial communication interface through the serial communication interface 113 The data processing device 3 communicatively connected with 113 sends the connection signal S3 to the first processing unit 122 through the serial communication interface 113 so as to establish a connection between the first processing unit 122 and the data processing device 3.

Please refer to the third figure. The third figure shows a flowchart of a communication interface control method provided by a preferred embodiment of the present invention. The preferred embodiment of the present invention also provides a communication interface control method, which is implemented by the communication interface control system shown in the second figure, and includes the following steps S101 to S103, and this embodiment further uses the first As an example, the processing unit 122 intends to connect with the data processing device 4.

Step S101: Use the first processing unit 122 to the first storage unit 121 of the management control module 12 to retrieve the device connection information 1213 corresponding to the data processing device 4, and send out the device including the above corresponding device through the information transmission protocol The device of the connection information 1213 selects the communication command S1.

Step S102: Use the second processing unit 132 of the logic processing module 13 to receive the device selection communication command S1, so that the logic processing module 13 parses out the series corresponding to the above-mentioned corresponding device connection information 1213 according to the device selection comparison table 1311 The communication interface information C, and a trigger signal S2 containing the above-mentioned corresponding device connection information 1213 and the corresponding serial communication interface information C is sent.

Step S103: Utilize the multiplex processing unit 111 to receive the trigger signal S2, and the multiplex processing unit 111 switches the serial communication interface 114 corresponding to the corresponding serial communication interface information C to be communicatively connected to the first processing unit 122, and Trigger the data processing device 4 communicatively connected to the corresponding serial communication interface 114 through the corresponding serial communication interface 114 and send the connection signal S3 to the first processing unit 122 through the corresponding serial communication interface 114 , So as to establish a connection between the first processing unit 122 and the data processing device 4.

Among them, other detailed descriptions of each step have been mentioned in the several paragraphs above, so it is not repeated here.

In summary, after using the communication interface control system and method provided by the present invention, the logic processing module 13 is directly used to communicate with the serial communication interface multiplex processing module 11, and through the logic processing module 13 Switching and connecting the serial communication interfaces 112, 113, 114, and 115, so the management control module 12 can keep more pins for other functional devices to connect, and can effectively solve the problem of switching errors.

Through the detailed description of the above preferred embodiments, it is hoped that the characteristics and spirit of the present invention can be described more clearly, and the scope of the present invention is not limited by the preferred embodiments disclosed above. On the contrary, the purpose is to cover various changes and equivalent arrangements within the scope of the patent for which the present invention is intended.

PA1: Communication interface system

PA11: Management control module

PA12: Serial communication interface multiplex processing module

PA121, PA122, PA123, PA124: serial communication interface

PA2, PA3, PA4, PA5: data processing device

1: Communication interface control system

11: Serial communication interface multiplex processing module

111: multiplex processing unit

112,113,114,115: serial communication interface

12: Management control module

121: The first storage unit

1211, 1212, 1213, 1214: device connection information

122: first processing unit

13: Logic processing module

131: second storage unit

1311: Device selection comparison table

132: second processing unit

2, 3, 4, 5: data processing device

S1: Device selection communication command

S2: Trigger signal

S3: connection signal

S101-S103: steps

The first figure is a block diagram showing the communication interface system of the prior art of the present invention; The second figure is a block diagram showing the communication interface control system provided by the preferred embodiment of the present invention; and The third figure is a flowchart of the communication interface control method provided by the preferred embodiment of the present invention.

1: Communication interface control system

11: Serial communication interface multiplex processing module

111: multiplex processing unit

112,113,114,115: serial communication interface

12: Management control module

121: The first storage unit

1211, 1212, 1213, 1214: device connection information

122: first processing unit

13: Logic processing module

131: second storage unit

1311: Device selection comparison table

132: second processing unit

2, 3, 4, 5: data processing device

S1: Device selection communication command

S2: Trigger signal

S3: connection signal

Claims (10)

A communication interface control system includes: a serial communication interface (Inter-Integrated Circuit, I ² C) multiplex processing module, including: a multiplex processing unit; and a plurality of serial communication interfaces, which are electrically connected In the multiplex processing unit, each serial communication interface respectively has a serial communication interface information, and is respectively communicatively connected to a data processing device with a device connection information; a management control module includes: a first The storage unit stores the device connection information of the data processing device communicatively connected with each serial communication interface; and a first processing unit is electrically connected to the first storage unit for communication with the data processing device. When the data processing device communicatively connected by one of the serial communication interfaces establishes a connection, the first storage unit retrieves the corresponding connection information of the device, and sends out an information transmission protocol including There is a device selection communication command corresponding to the device connection information; and a logic processing module, which includes: a second storage unit, which stores a serial communication interface information and each device connection information Correspondence of device selection comparison table; and a second processing unit, electrically connected to the second storage unit, communicatively connected to the first processing unit and the multiplex processing unit, for receiving the device selection communication When commanding, parse out the serial communication interface information corresponding to the above-mentioned corresponding device connection information according to the device selection comparison table, and include the above-mentioned corresponding device connection information and the corresponding serial communication interface information The trigger signal of serial communication interface information is sent to the multiplex processing unit; wherein, when the multiplex processing unit receives the trigger signal, the serial communication interface corresponding to the serial communication interface information corresponding to the above is switched In order to be communicatively connected to the first processing unit, and to trigger the corresponding serial communication interface through the corresponding serial communication interface, the data processing device communicatively connected through the corresponding serial communication interface will A connection signal is sent to the first processing unit, so that the first processing unit and the data processing device establish the connection. The communication interface control system according to claim 1, wherein the serial communication interface multiplexing processing module is a serial communication interface multiplexer (I ² C Multiplexer, I ² C MUX). The communication interface control system according to claim 1, wherein the management control module is a baseboard management controller (BMC). The communication interface control system according to claim 1, wherein the logic processing module is a complex programmable logic device (CPLD). The communication interface control system according to claim 1, wherein the information transmission protocol is one of a serial communication interface, a serial universal input output interface, and a low pin count (LPC) interface. A communication interface control method is implemented using the communication interface control system as described in claim 1, and includes the following steps: (a) Use the first processing unit to the first storage unit of the management control module to retrieve the device connection information corresponding to the data processing device for which the connection is to be established, and send it through the information transmission protocol Output the device selection communication command including the corresponding device connection information mentioned above; (b) Use the second processing unit of the logic processing module to receive the device selection communication command, so that the logic processing module parses the string corresponding to the device connection information according to the device selection comparison table. List communication interface information, and send out the trigger signal including the above-mentioned corresponding device connection information and the corresponding serial communication interface information; and (c) Use the multiplex processing unit to receive the trigger signal, and the multiplex processing unit switches the serial communication interface corresponding to the corresponding serial communication interface information to be communicatively connected to the first processing unit, and Trigger the data processing device communicatively connected to the corresponding serial communication interface through the corresponding serial communication interface and send the connection signal to the first processing unit through the corresponding serial communication interface , So that the first processing unit and the data processing device establish the connection. The communication interface control method according to claim 6, wherein the serial communication interface multiplexing processing module is a serial communication interface multiplexer (I ² C Multiplexer, I ² C MUX). The communication interface control method according to claim 6, wherein the management control module is a baseboard management controller (BMC). The communication interface control method according to claim 6, wherein the logic processing module is a complex programmable logic device (CPLD). The communication interface control method according to claim 6, wherein the information transmission protocol is one of a serial communication interface, a serial universal input output interface, and a low pin count (LPC) interface.

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