KR100419255B1 - Collection Method Of System Information In Master/Slave System - Google Patents

Abstract

The present invention relates to a method for collecting system information in a master / slave system that enables a more efficient collection of system information and signal utilization by simplifying a signal interface between a master and a slave in a master / slave system. In the related art, in order to collect system information, there is a problem in that signal utilization between a master and a slave is not good as a plurality of signal interfaces are required.

Therefore, in the present invention, when collecting system information in a master / slave system, a master control signal such as a reset, a clock, a master frame, and a slave frame transmitted from the master to the slave side, and the slave side to the master system according to the master control signal By using only slave data signals to provide information, system information and system ID and alarm information can be selectively collected, thereby improving signal utilization between the master and the slave.

Description

Collection method of system information in master / slave system

The present invention relates to system information collection in a master / slave system. In particular, a method for collecting system information in a master / slave system by simplifying a signal interface between a master and a slave enables more efficient system information collection and signal utilization. It is about.

In general, in a system having a master / slave structure (hereinafter, referred to as a “master / slave system”), in order for a master to collect system information of a slave side, corresponding system information The collection interface must be configured between the master and the slave.

At this time, the master collects the system information of the slave side, N collection method ('N' is the number of signals), N / X + X collection method ('N' is the number of signals, 'X' is the selection signal Number).

Referring to this system information collection method, first, the N collection method, as shown in the accompanying drawings, Figure 1, in order to collect the system information on the slave 12 side from the master 11, the master 11 and the slave ( 12) As many as system information and number of alarms, that is, N signal interfaces (Signal Interfaces) are required, and system information is collected by mapping one-to-one (1: 1) through each signal interface. That's the way it is.

Referring to the operation sequence of the aforementioned N collection method, first, the master 11 maps as many signal information as the number of system information to the slave 12 in order to collect system information on the slave 12 side, and then registers. ) And store system information collected from the slave 12 through a one-to-one mapped signal interface in a register.

Subsequently, when there is a request for system information from an upper processor (not shown), the master 11 transmits system information collected from the slave 12 and stored in a register to the upper processor, and then initializes the register again. It returns to the procedure to collect the system information of the slave (12) side.

Secondly, the N / X + X collection scheme is provided between the master 21 and the slave 22 in order to collect system information of the slave 22 side from the master 21, as shown in FIG. By reading system information distributed by the number of selection signals 'X' from the system ID and the number of alarms, which are system information at once, the system repeatedly reads the number of selection signals by 'X' to collect all the system information. In this case, the number of signals 'N / X + X' is required between the master 21 and the slave 22.

Referring to the operation sequence of the aforementioned N / X + X acquisition method, first, the master 21 maps N / X + X signal interfaces with the slave 22 for collecting system information on the slave 22 side. Initialize a register and store the system information collected from the slave 22 through the signal interface according to the selection signal. In this case, system information corresponding to the selection signal is collected and stored in the register.

Thereafter, the procedure of collecting system information from the slave 22 as many times as the number of the selection signal is repeated, thereby collecting system information corresponding to each selection signal from the slave 22 and storing the system information in the register.

If there is a request for system information from an upper processor (not shown), the master 21 transmits the system information collected from the slave 22 and stored in the register to the upper processor, and then initializes the register again. It returns to the procedure to collect the system information of the slave 22 side.

However, in the above-described conventional master / slave system, a plurality of signal interfaces are required for the master to collect system information of the slave side, that is, in the case of the N collection method, the number of system information to be collected between the master and the slave. For N / X + X acquisition method, N / X + X (where N is the number of signals and X is the number of selection signals) is required. There was a problem of poor signal utilization between slaves.

The present invention is to solve the problems as described above, the purpose of the master control, such as reset, clock, master frame, slave frame to send the system ID and alarm information, which is system information in the master / slave system from the master to the slave side It is possible to collect using only slave data signal to provide system information from slave side to master according to signal and master control signal.

In addition, another object of the present invention is to simplify the signal interface for collecting system information, thereby improving the signal utilization between the master and the slave.

1 is a diagram showing a system information collection structure according to N collection method in a conventional master / slave system.

2 is a diagram illustrating a system information collection structure according to N / X + X collection scheme in a conventional master / slave system.

3 is a diagram illustrating a system information collection structure in a master / slave system according to the present invention.

3 is a timing diagram for a signal interface on the master side.

FIG. 5 is a timing diagram of a signal interface on the slave side in FIG. 3; FIG.

A feature of the present invention for achieving the object as described above, in the method for collecting system information in the master / slave system, the reset signal, the clock signal, the master to send out to collect the system information of the slave side from the master A signal interface structure including a frame, a master control signal including a slave frame, and a slave data signal for providing system information from the slave side to the master according to the master control signal; The master transmits the master control signal to the slave side, and the slave performs the operation of transmitting the slave data signal to the master side, so that the master side collects system information from the slave side.

Here, when the reset signal is switched from the inactive state to the active level, the master frame is switched from the inactive to the active level at one periodic clock in synchronization with the clock signal, and the slave frame is synchronized with the master frame. According to the present invention, the sub-slave frame unit is configured to switch from inactive to active level.

When the master wants to selectively collect system information, the master transmits information on each sub-slave frame to which the system information to be collected belongs to the slave side, and simultaneously activates the corresponding sub-slave frame to selectively select system information from the slave side. Characterized in that the collection.

According to another aspect of the present invention, in a method of collecting system information in a master / slave system, when the system information is to be collected from the master, a master frame and a sub slave frame are generated to generate a system ID and the number of sub slave frames to be activated. Reading and collecting information from the slave; After collecting the information on the number of sub-slave frames, the next master frame is generated, and a plurality of sub-slave frames are generated to collect the corresponding system information. It is.

In this case, the collecting of the system ID and the number of sub-slave frames includes: transitioning to a get ID state after converting a reset signal to an active level in a master; Generating a first master frame synchronized with the clock and generating a first sub slave frame synchronized with the first master frame when the clock transitions to the getID state; Reading and collecting a system ID from a slave side during the first slave frame period; Generating a second sub-slave frame after collecting the system ID and collecting the number of information of the number of sub-slave frames to be activated during a corresponding period; collecting the system ID from the slave side; The method may further include activating an ID selection signal during a first sub slave frame period according to a master control signal at the slave side, and sending a system ID to the master.

In addition, the process of generating the sub-slave frame to collect the corresponding system information, after collecting the number information of the sub-slave frame transition to the get alarm state to generate the next master frame synchronized to the clock; Generating as many sub-slave frames as the number of sub-slave frames, and reading and collecting the corresponding system information from the slaves.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

In the master / slave system according to the present invention, the signal interface for collecting system information of the slave side is transmitted to collect system information of the slave 32 side from the master 31, as shown in FIG. The master control signal such as a reset signal (RESET), a clock signal (CLOCK), a master frame (MFRAME *), and a slave frame (SFRAME *), and the master 31 from the slave 32 side to the master 31 according to the master control signal. It has a signal interface structure that contains slave data (SD) signals to provide information.

At this time, when the master 31 describes the master control signal transmitted to collect the system information on the slave 32 side, when the reset signal RESET is switched from the inactive state to the active level, the master frame MFRAME * Synchronize with the clock signal (CLOCK) once every 256 clocks from '1' to '0', ie from inactive to active level, slave frame (SFRAME *) once every 16 clocks in synchronization with the master frame Switch from '1' to '0', ie from inactive to active level.

In addition, the slave 32 may transmit slave data SD according to a master control signal provided from the master 31, that is, a reset signal RESET, a clock signal CLOCK, a master frame MFRAME *, and a slave frame SFRAME *. Provides system information through the signal interface.

For example, when the alarm information, which is the system information on the slave 32 side, is 256, the slave 32 configures 16 sub slave frame data by combining 16 units, and each sub slave frame data. In order to control the internal control signal is activated in each sub-slave frame period.

At this time, the master frame (MFRAME *) occurs once every 256 clocks, and the slave frame (SFRAME *) occurs once every 16 clocks in synchronization with the master frame (MFRAME *), the master frame (MFRAME *) and slave frames It occurs 16 times between (SFRAME *).

In addition, when there is no need to collect 256 alarm information, which is system information on the slave 32 side, the master 31 assigns each sub slave frame information (# of Sub-Frames) to which the alarm information actually needed belongs. 32) side, and simultaneously activate the slave frame (SFRAME *) to selectively collect the alarm information of the slave (32) side.

Referring to the master interface timing diagram of FIG. 4 and the slave interface timing diagram of FIG. 5, the procedure of collecting system information on the slave 32 side in the master / slave system configured as described above is as follows.

First, when the master 31 looks at a state for collecting alarm information, which is system information on the slave 32 side, initially transitions from the idle state IDLE to the get alarm state GETALM through the get ID state GETID. In the idle state IDLE, the reset signal RESET maintains an inactive level, and when a transition is made to an active level at any moment (from high level to low level), the get ID state ( GETID).

Then, when the transition to the getID state GETID occurs, the first master frame (MFRAME *) synchronized with the clock after the first one clock has elapsed (that is, the master frame transitions from the high level to the low level for one clock). While maintaining the high level and generating the first sub-slave frame that is the slave frame (SFRAME *) that is synchronized to the first master frame (MFRAME *) (that is, during one clock from high level to low level every 16 clock cycles). Switching and maintaining a high level), and during the first slave frame period, the system ID is read and collected from the slave 32 side. At this time, the slave 32 side receives a control signal transmitted from the master 31, that is, a reset signal. First sub-slave frame section according to (RESET), clock signal (CLOCK), master frame (MFRAME *), slave frame (SFRAME *) In activating the ID selection signal (IDSEL *) from '1' to '0', it sends the ID to the master system (31).

Subsequently, when the second sub slave frame is generated, the number of sub-frames (# of Sub-Frames) to be activated during the corresponding period is read and collected. At this time, the slave 32 receives a frame number signal (#FRAME). It activates and sends the information (# of Sub-Frames) of the number of sub-slave frames to be activated to the master 31.

Next, after collecting the number of sub-slave frames (# of Sub-Frames), the transition to the get alarm state (GETALM), the next master frame (MFRAME *) synchronized to the clock in the get alarm state (GETALM) ) And simultaneously generate (activate) the first sub-slave frame (SUB-FRAME 0) synchronized with the master frame (MFRAME *), from which the alarm information, which is system information on the slave 32 side, is read. Will be collected.

In addition, the master 31 generates sub-slave frames SUB-FRAME N as many as the number of sub-slave frames to be activated by the slave 32 in the get alarm state GETALM to collect corresponding alarm information. After collecting all the activated alarm information, the master frame (MFRAME *) is generated again and the sub slave frame is generated to read and collect the alarm information sequentially.

At this time, the slave 32 corresponds to each sub slave frame SUB-FRAME 0 to 15 during a period in which the sub slave frames SUB-FRAME 0 to 15 occur in the get alarm state GETALM of the master 31. The buffer selection signal BSEL * (N) is activated to send the corresponding alarm information.

Here, when the alarm information is read and collected, 256 sub-slave frames (SUB-FRAME 0 to 15) are repeatedly generated in 16 cycles and 256 master frames (MFRAME *) are generated when the alarm information is 256 system information. It will be generated repeatedly once per clock.

In addition, in the present invention, the master 31 controls the generation of the master frame MFRAME * and the slave frame SFRAME * to selectively read and collect system ID and alarm information, which are system information on the slave 32 side. It becomes possible.

In addition, the embodiments according to the present invention are not limited to the above-described embodiments, and various alternatives, modifications, and changes can be made within the scope apparent to those skilled in the art.

As described above, the present invention provides a master control signal such as a reset, a clock, a master frame, and a slave frame transmitted from the master to the slave when collecting system information in the master / slave system, and the master on the slave according to the master control signal. By using only slave data signals to provide system information, system ID and alarm information, which are system information, can be selectively collected, thereby improving signal utilization between the master and the slave.

Claims (7)

In a method for collecting system information in a master / slave system, A master control signal including a reset signal, a clock signal, a master frame, and a slave frame, which are sent from the master to collect system information of a slave side; A signal interface structure including a slave data signal for providing system information from the slave side to a master according to the master control signal; The master transmits the master control signal to the slave side, the slave performs the operation of transmitting the slave data signal to the master side, the master side to collect system information from the slave side To collect system information from a disk / slave system The method of claim 1, When the reset signal is switched from the inactive state to the active level, the master control signal is switched from the inactive to the active level at one periodic clock in synchronization with the clock signal, and the slave frame is synchronized with the master frame. A method for collecting system information in a master / slave system, characterized in that switching from inactive to active level in units of slave frames. The method of claim 1, When the master wants to collect system information selectively, the master transmits each sub-slave frame information belonging to the system information to be collected to the slave side, and simultaneously collects system information from the slave side by activating the corresponding sub slave frame. System information collection method in the master / slave system, characterized in that the. In a method for collecting system information in a master / slave system, Generating a master frame and a sub-slave frame when the master wants to collect system information, and reading and collecting system ID and information on the number of sub-slave frames to be activated from the slave; After collecting the information on the number of sub-slave frames, a next master frame is generated, and a plurality of sub-slave frames are generated to collect corresponding system information. Collection method. The method of claim 4, wherein The process of collecting the system ID and the number of sub-slave frames includes: transitioning to a get ID state after the master converts the reset signal to an active level; Generating a first master frame synchronized with the clock and generating a first sub slave frame synchronized with the first master frame when the clock transitions to the getID state; Reading and collecting a system ID from a slave side during the first slave frame period; And collecting information about the number of sub-slave frames to be activated during a corresponding period by generating a second sub-slave frame after collecting the system ID. The method of claim 5, The collecting of the system ID from the slave side includes: activating an ID selection signal during a first sub slave frame period according to a master control signal at the slave side and sending a system ID to the master. How to collect system information on slave system. The method of claim 4, wherein The generating of the sub slave frame and collecting corresponding system information may include: generating a master frame synchronized with a clock by shifting to a get alarm state after collecting the number of sub slave frame information; Generating as many sub-slave frames as the number of sub-slave frames, and reading and collecting system information corresponding to the sub-slave frames.