KR100460488B1 - Apparatus and method for management subscriber board in communication system - Google Patents

Abstract

The present invention provides a subscriber board management apparatus and method thereof of a communication switching system, comprising: a processor unit controlling a switching system and managing a state of a subscriber unit; A back board connected to the processor unit via a CPU bus and having a memory configured to store initialization information of the subscriber unit; By including the subscriber unit connected to the processor unit and the CPU bus to process the subscriber signal, by implementing the inventory of the various types of subscriber board in the switching system to minimize the time and effort required to find out the type of subscriber board, By using the version, you can prevent errors and smoothly manage hardware and software.

Description

Apparatus and method for management subscriber board in communication system

The present invention relates to an apparatus and a method for managing a subscriber board of a switching system, and in particular, implements an inventory of various types of subscriber boards in a switching system to minimize the time and effort required to find out the type of the subscriber board, and a wrong version. The present invention relates to an apparatus and a method for managing a subscriber board of an exchange system, which is suitable for preventing an error generated by using and smoothly performing hardware and software management.

In the past, the hardware board management was performed as follows. In other words, it was only marked with PBA (Print Board Assembly) silk in the board, and the software management of the board could confirm only the board type through the CPU interface.

Therefore, the processor unit equipped with the CPU cannot know the type of the subscriber board, the hardware version, the checksum value of the field programmable gate array (FPGA) or the programmable logic device (PLD), and only the status information of the subscriber board. there was.

1 is a block diagram of a conventional exchange system.

Here, reference numeral 1 denotes a processor unit incorporating a CPU, and 2 (2A to 2H) is a subscriber unit which is a subscriber board equipped with an FPGA or a PLD and mounted to an exchange system.

2 is a flowchart illustrating a subscriber board management method of a conventional exchange system.

As shown in the figure, when the subscriber unit 2 is mounted in the switching system, a step (ST1) of transmitting a PRESENT signal indicating that the subscriber unit 2 has been mounted; The processor unit (1) reads the register of the mounted subscriber unit (2) to determine the type of the subscriber unit (ST2); The processor unit 1 performs the step ST3 of initializing the subscriber unit 2 with data suitable for the identified type of the subscriber unit 2.

Thus, the conventional apparatus can control the subscriber unit 2, which is the eight subscriber board, with the processor unit 1 equipped with the CPU.

An 8-bit CPU bus exists between the processor unit 1 and the subscriber unit 2, and when the subscriber unit 2 is mounted in the switching system, a signal indicating that a board named PRESENT is mounted is transmitted to the processor unit 1.

The PRESENT signal is present in each subscriber slot individually, and the CS signal given by the processor unit 1 is also present in each slot.

At this time, the processor unit 1 knows that the subscriber unit 2 is mounted and exists in the register (in the FPGA or PLD of the subscriber board) of the subscriber unit 2 mounted through the CPU bus to check what kind of subscriber board. The type of the subscriber unit 2, which is mounted, is determined, and the initialization of the subscriber unit 2 is performed with the data suitable for the subscriber unit 2.

However, in the conventional technology, the processor unit can check only the type of the subscriber board, so that the hardware version of the subscriber board, the version of the logic designed on the subscriber board, the checksum value, or the version of the content to be initialized cannot be known. Therefore, even if the boards are the same type but the boards have different versions, the boards cannot be initialized differently according to each version, and it takes considerable time and effort to find out the type of the subscriber board. There were problems that could not be solved.

Accordingly, the present invention has been proposed to solve the above-mentioned conventional problems, and the present invention implements an inventory of various types of subscriber boards in an exchange system, and it takes time and effort to find out the types of subscriber boards. The present invention provides a subscriber board management apparatus and method for an exchange system capable of minimizing, preventing errors caused by using an incorrect version, and smoothly performing hardware and software management.

In order to achieve the above object, an apparatus for managing a subscriber board of an exchange system according to an embodiment of the present invention includes: a processor unit controlling a switching system and managing a state of a subscriber unit; through the processor unit and a CPU bus; A back board having a memory connected with the memory to store initialization information of the subscriber unit; a chip selection unit connected to the processor unit through a CPU bus to allow the subscriber unit to select what kind of subscriber unit; A connector which transmits and receives a synchronization signal and a serial data signal and connects the processor unit to recognize initialization information of the subscriber unit; the processor unit is controlled by the synchronization signal and a serial data signal and is controlled by the subscriber unit. An EPROM for storing initialization information of the;

When the data of the EPROM is changed through the connector is characterized in that it comprises a diode that separates the power supply of the board and the EPROM.

Subscriber board management method of the exchange system according to an embodiment of the present invention to achieve the above object,

Installing a memory storing initialization contents in the subscriber unit, and reading the initialization contents stored in the memory of the subscriber unit and storing them in the memory of the backboard; When the subscriber unit is mounted in the switching system, the technical configuration includes performing a second step of performing initialization of the subscriber unit by reading a memory in which the initialization contents of the mounted subscriber unit are stored.

1 is a block diagram of a conventional exchange system,

2 is a flowchart illustrating a subscriber board management method of a conventional exchange system;

3 is a block diagram of an apparatus for managing a subscriber board of an exchange system according to the present invention;

4 is a detailed configuration diagram of the subscriber unit in FIG.

FIG. 5 is a view illustrating an example of an address book of a subscriber in FIG. 3.

6 is a flowchart illustrating a subscriber board management method of an exchange system according to the present invention.

Explanation of symbols on the main parts of the drawings

10: processor unit 11: CPU

20: Backboard 21: EPROM

30: subscriber unit 31: chip selector

32: connector 33: EPROM

34: diode

Hereinafter, an embodiment of a subscriber board management apparatus and method of the exchange system of the present invention will be described with reference to the accompanying drawings.

3 is a block diagram of the subscriber board management apparatus of the switching system according to the present invention, FIG. 4 is a detailed block diagram of the subscriber unit in FIG. 3, and FIG. to be.

As shown therein, the processor unit 10 controls the switching system and manages the state of the subscriber unit 30; A back board 20 connected to the processor unit 10 via a CPU bus and having a memory 21 for storing initialization information of the subscriber unit 30; It is configured to include a subscriber unit 30 is connected to the processor unit 10 and the CPU bus to process the subscriber signal.

The subscriber unit 30 includes a chip selector 31 which enables the subscriber unit 30 to select what kind of subscriber unit; A connector 32 which transmits and receives a signal SCL and a serial data signal SDA for synchronization with the processor unit 10 so as to connect the processor unit 10 to grasp initialization information of the subscriber unit 30. ; An EPROM (33) which is controlled by the signal (SCL) and serial data signal (SDA) for synchronization in the processor unit (10) and stores initialization information of the subscriber unit (30); And a diode 34 separating the board power supply and the power supply of the EPROM 33 when the data of the EPROM 33 is changed through the connector 32.

In the above, the EPROM 33 stores the PBA name, production date and time, PBA version (Version), PBA serial number (Serial Number) of the produced subscriber unit 30, and the like.

6 is a flowchart illustrating a subscriber board management method of an exchange system according to the present invention.

A first step of mounting a memory 33 storing the initialization contents in the subscriber unit 30 and then reading the initialization contents stored in the memory 33 of the subscriber unit 30 and storing them in the memory 20 of the back board 20. (ST12); When the subscriber unit 30 is mounted in the switching system, a second step (ST13) (ST14) of performing initialization of the subscriber unit is performed by reading the memory 33 in which the initialization contents of the mounted subscriber unit 30 are stored. Do it.

Operation of the subscriber board management apparatus and method of the exchange system according to the present invention will be described in detail with reference to the accompanying drawings.

The present invention can be configured by inserting a circuit and logic for an inventory function between the processor unit 10 and the subscriber unit 30, and a memory 33 configured with a serial EPROM in the subscriber unit 30. And a chip selector 31 composed of an FPGA and a circuit may be configured.

In this case, the inventory function is to install a small serial EPROM on each board and store the necessary data in this memory so that it can be read when needed.

The EPROM 33 has a capacity of 1 Kbyte or less, and can store data for history management such as PBA name, production date, PBA version, and PBA serial number of the produced product (PBA).

Thus, when each subscriber unit 30 is open, data can be fusing into memory using a separate EPROM Read / Write tool, and when mounted in an exchange system, You can read and search inventory information.

This operation of the present invention will be described in more detail.

First, in the present invention, the processor unit 10 accesses the inventory chip of all the subscriber units 30, the backboards, and the power boards (which are not shown in the drawings). Can read data

Serial EPROM (21) (33) is added to each board 20, 30, and each EPROM (21) (33) is initialized to know the PBA name of the board, the version of logic and the checksum value. Put it in.

The EPROM is powered from a PC or board and has Address (0: 2), VCC, GND, WP, SCL and SDA signals.

A0 receives signal from PLD and decides whether to enable or disable subscriber chip. A1 / A2 is connected to GND.

Synchronous Clock (SCL) is a signal for CLK synchronization, and SDA (Serial Data) is used to receive data from a PC during fusing or to exchange data with a CPU during board operation.

Therefore, EPROM can be serially accessed using only SDA and SCL signals.

In addition, WP (Write Protection) is a signal for write protection, which is normally high for EPROM data write protection and assigned to low when fusing.

The diode 34 of the VCC stage is required to prevent a collision with the VCC supplied to the board since power is input from the PC at the time of fusing the EPROM 33. That is, when the EPROM data is changed through the connector 32 in the board-mounted state (Power-off), the board power and the EPROM power are separated through the diode 34.

The EPROM 33 receives power from the PC through the connector 32. The serial EPROM that can be accessed has the addresses A0 to A2 (0, 0, 0). You should make 2) zero. As such, all boards have a connector to which the EPROM Writer can be connected to write data to the EPROM.

Since there are three basic addresses, up to eight EPROMs can be mounted. If more than nine are connected, more EPROMs can be added by adding data lines controlled by the processor.

The backboard 20 is provided only with the EPROM 21. If the board needs to be modified due to modifications, the board 20 can be removed from the EPROM socket and modified using a fusing tool. Afterwards it is mounted on the EPROM socket of the backboard 20. Thus, the EPROM 21 used for the back board 20 is in the form of a dual in-line package. The allocated addresses A0 to A2 have differently assigned values.

Since inventory chips have only 8 chip select addresses, access to each inventory chip is inaccessible. Therefore, whenever a specific inventory chip is read, a board whose subscriber board does not have a CPU bus on the chip to be read is assigned a specific address to make it accessible.

An example of an assigned chip select address is shown in FIG. 5.

The subscriber board selects a chip by using a chip selector 31 composed of an FPGA or a PLD to set a chip select address through a CPU bus. In other words, two or more inventory chips (a subscriber front board assembly (FA) board and a subscriber rear board assembly (RA) board) are common to one subscriber slot, and the chip is enabled in a specific register through the CPU bus. (Chip Enable), the A0 pin of the inventory chip is made high by the chip selector 31 which is an FPGA so that the chip is selected by setting the address to binary "001". will be.

After chip select, access the data through SDA and SCL and set it back to binary "000".

As such, the present invention implements an inventory of various types of subscriber boards in a switching system, minimizes the time and effort required to find out the type of subscriber boards, prevents errors caused by using the wrong version, and facilitates hardware and software management. It will be done.

Although the preferred embodiment of the present invention has been described above, the present invention may use various changes, modifications, and equivalents. It is clear that the present invention can be applied in the same manner by appropriately modifying the above embodiments. Accordingly, the above description does not limit the scope of the invention as defined by the limitations of the following claims.

As described above, the subscriber board management apparatus and method of the switching system according to the present invention implements an inventory of various types of subscriber boards in the switching system and minimizes the time and effort required to find out the type of the subscriber board. It prevents errors caused by using the wrong version and smoothly manages hardware and software.

Claims (4)

A processor unit controlling a switching system and managing a state of a subscriber unit; A back board connected to the processor unit via a CPU bus and having a memory configured to store initialization information of the subscriber unit; A chip selection unit connected to the processor unit via a CPU bus to allow the subscriber unit to select what kind of subscriber unit; A connector for transmitting and receiving a signal for synchronizing with the processor unit and a serial data signal to connect the processor unit to recognize initialization information of the subscriber unit; An EPROM under the control of the synchronization signal and the serial data signal in the processor unit, and storing initialization information of the subscriber unit; And a diode separating the board power supply and the power supply of the EPROM when the data of the EPROM is changed through the connector. delete The method of claim 1, wherein the EPROM, Subscriber board management device of the exchange system characterized in that it stores the data necessary for history management, such as PBA name, production date, PBA version, PBA serial number produced subscriber. Installing a memory storing initialization contents in the subscriber unit, and reading the initialization contents stored in the memory of the subscriber unit and storing them in the memory of the backboard; And when the subscriber unit is mounted in the switching system, performing the initialization of the subscriber unit by reading a memory in which initialization contents of the mounted subscriber unit are stored.