KR100604832B1 - Method for setting mater/slave mode in data storage unit and disk drive using the same - Google Patents

Abstract

The present invention relates to a method for setting a master / slave for a data storage device, and more particularly, to a method for setting a master / slave for a data storage device for changing a master / slave / cable select mode of a drive using software and a disk drive using the same. It is about.

In the method of setting a master / slave in a data storage device according to the present invention, the method of setting a master / slave of a drive includes the steps of: (a) determining whether a command of changing a master / slave / cable select mode of a drive is received from a host device; (b) when the master / slave / cable select mode change command is received as a result of the determination of step (a), corresponding to each mode of the master / slave / cable select stored in a predetermined area of the storage medium of the drive; And selecting a file of a mode to be changed from the file and downloading it to the memory.

Description

Method for setting mater / slave mode in data storage unit and disk drive using the same}

1 is a block diagram of a master / slave setting interface device in a conventional drive.

FIG. 2 is a table summarizing the master / slave recognition results at the main terminals according to the shunt pin position in FIG. 1.

3 is a structural diagram of a disk drive to which the present invention is applied.

4 is an electrical circuit diagram of a disk drive to which the present invention is applied.

5 is a flowchart illustrating a master / slave setting method in a data storage device according to the present invention.

The present invention relates to a method for setting a master / slave for a data storage device, and more particularly, to a method for setting a master / slave for a data storage device for changing a master / slave / cable select mode of a drive using software and a disk drive using the same. It is about.

In general, a computer uses a peripheral storage device such as a hard disk drive or a CD-ROM drive as a peripheral storage device. In addition, IDE (Integrated Drive Electronics) is mainly used as an interface for such peripheral storage devices. If you connect more than two disk drives to your computer, you need to set whether the connected device will act as a master drive or a slave drive.

Typically, the master or slave configuration of disk drives connected to a computer is set using a method of connecting jumpers to pin ports that determine the master / slave of the interface connector.

As shown in FIG. 1, in the master / slave setting interface device of the conventional drive, the master terminal (pin 41) of the connector 100 is connected to ground, and the slave terminal (pin 42) is connected to the ground. It is open and a CSEL (Cable Select) signal, which is input from the host computer, is input to the cable select terminal (pin 45). In addition, a pull-up resistor is connected to the master / slave decision terminal (DEVSEL) input to the digital signal processor chip of the drive.

Then, look at the master / slave setting operation according to the pin connection of the connector 100 as follows.

When the pins 41 and 42 of the connector are connected with jumpers, the drive operates as a master. When the pins 43 and 44 are connected as shunt pins, the drive operates as a slave. 45 If pins 46 and 46 are connected as shunt pins, the drive is determined as master or slave by CSEL (Cable Select).

That is, according to the shunt pin connection state, the drive recognizes the slave when the state of the master / slave decision terminal DEVSEL is high, and the master when the state of the master / slave decision terminal DEVSEL is high. 2 shows the master / slave setting result according to the connection state of the shunt pin.

Therefore, according to the conventional technology, there is a problem in that it is inconvenient to use the manual connection state of the shunt pin after opening the case of the drive to change the mode of the drive. In addition, a hardware circuit for determining a master / slave is required, resulting in a material cost increase.

SUMMARY OF THE INVENTION The present invention has been made in an effort to provide a master / slave setting method and a disk drive using the same in a data storage device for executing a master / slave / cable select mode selection of a drive in order to solve the above problems. have.

In order to achieve the above technical problem, in the master / slave setting method of the data storage device according to the present invention, in the master / slave setting method of the drive, (a) the command of changing the master / slave / cable select mode of the drive from the host device is (B) when the master / slave / cable select mode change command is received as a result of the determination of step (a), the master / slave / cable stored in a predetermined area of the storage medium of the drive. And selecting a file of a mode to be changed from among files corresponding to each of the select modes and downloading the file to a memory.

In order to achieve the above technical problem, a disk drive is a data storage device comprising: a disk storing firmware corresponding to each mode of a master / slave / cable select in a predetermined area in a file form, and transmitting / receiving data with a host device. A host interface for executing processing, a memory for storing firmware for controlling a disk drive in accordance with a set mode, a control operation corresponding to a command received from a host device using firmware stored in the memory, and executing a master / slave A controller for controlling to update the firmware of the memory by reading a file of a mode to be changed from the disk when a cable select mode change command is received, or writing data received through the host interface to the disk or Or a write / read circuit for performing data processing for reading data from the disc.

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

3 shows a configuration of a disk drive 10 to which the present invention is applied. The drive 10 includes at least one magnetic disk 12 that is rotated by a spindle motor 14. The disk drive 10 also includes a transducer 16 located adjacent to the disk surface 18.

The transducer 16 can read or write information on the rotating disk 12 by sensing and magnetizing the magnetic field of each disk 12. Typically transducer 16 is coupled to each disk surface 18. Although illustrated and described as a single transducer 16, it should be understood that this consists of a write transducer for magnetizing the disc 12 and a separate read transducer for sensing the magnetic field of the disc 12. Read transducers are constructed from Magneto-Resistive (MR) devices. The transducer 16 is also commonly referred to as a head.

The transducer 16 can be integrated into the slider 20. The slider 20 is structured to create an air bearing between the transducer 16 and the disk surface 18. The slider 20 is coupled to the head gimbal assembly 22. The head gimbal assembly 22 is attached to an actuator arm 24 having a voice coil 26. The voice coil 26 is located adjacent to the magnetic assembly 28 that specifies the voice coil motor 30 (VCM). The current supplied to the voice coil 26 generates a torque for rotating the actuator arm 24 relative to the bearing assembly 32. Rotation of the actuator arm 24 moves the transducer 16 across the disk surface 18.

The information is typically stored in an annular track of the disc 12. Each track 34 generally includes a plurality of sectors. Each sector includes a data field and an identification field. The identification field is composed of a gray code identifying a sector and a track (cylinder). The transducer 16 is moved across the disk surface 18 to read or write information on other tracks.

4 shows an electrical circuit of a disk drive to which the present invention is applied.

As shown in FIG. 4, the disc drive according to the present invention includes a disc 12, a converter 16, a preamplifier 210, a write / read channel 220, a buffer 230, a controller 240, a ROM. 250, a RAM 260, a voice coil motor driver 270, and a host interface 280.

The disk 12 stores user data and data related to hard disk drive operations, and data related to hard disk drive operations are stored in a maintenance cylinder area, which is a disk area inaccessible to the general user.

In particular, in the present invention, the firmware corresponding to each mode of the master / slave / cable select is stored in the form of a file in the maintenance cylinder area of the disk 12.

In the above, the cable select mode refers to a mode in which the drive operates as a master or a slave according to a logic state input to a cable select terminal of a connector (not shown).

The ROM 250 stores firmware for controlling the disk drive corresponding to a mode selected from a master / slave / cable select mode, and it is effective to design a flash ROM device.

The RAM 260 is loaded with data necessary for the disk drive operation read in the maintenance area of the disk 12 at every boot.

The buffer 230 sequentially stores data received from the host device through the host interface 280 in the write mode, and sequentially stores data read from the disc 12 in the read mode.

The preamplifier 210 includes an amplifier circuit for amplifying a signal sensed by the converter 16 and a read current control circuit for supplying an optimal read current to the converter 16. Of course, a write current control circuit for supplying write current is also built in.

First, the operation of a general disk drive will be described.

In the data read mode, the disc drive amplifies the electrical signal sensed by the transducer 16 (also called a head) from the disc 12 to facilitate signal processing in the preamplifier 210. Then, in the recording / reading channel 220, the amplified analog signal is encoded into a digital signal that can be read by a host device (not shown), converted into stream data, and temporarily stored in the buffer 230, and then the host. It transmits to the host device through the interface 280.

In the data write mode, the disk drive receives data from the host device through the host interface 280 and temporarily stores the data in the buffer 230, and then outputs data from the buffer 230 to the write / read channel 220. After the conversion into a binary data stream suitable for the recording channel, the write current amplified by the preamplifier 210 is recorded on the disc 12 through the converter 16.

The controller 240 controls the disk drive as a whole and analyzes the command received through the host interface 280 to execute the command. The controller 240 is also coupled to the VCM driver 270 for supplying a drive current to the voice coil 26 and to the VCM driver 270 to control the excitation of the VCM and the movement of the transducer 16. Supply the control signal.

In particular, when the controller 240 receives a master / slave mode change command from the host device, the controller 240 reads a file of a mode to be changed from the maintenance cylinder area of the disk 12 to update the firmware stored in the ROM 250. To control.

Next, a master / slave setting method in the data storage device according to the present invention will be described with reference to the flowchart of FIG.

First, the controller 240 determines whether a drive master / slave / cable select mode change command is received from the host device through the host interface 280 (S501). The master / slave / cable select mode change command is effective to design in the form of vendor unique command.

As a result of the determination in step 501 (S501), when the drive master / slave / cable select mode change command is received, the controller 240 controls each master / slave / cable select stored in the maintenance cylinder area of the disc 12. The file of the mode selected to be changed is read from the file of the firmware corresponding to the mode and updated in the firmware stored in the ROM 250 (S502).

Accordingly, the controller 240 controls the disk drive in the mode of the firmware stored in the ROM 250 (S503).

In this way, the disk drive master / slave / cable connector mode selection can be performed in software.

The invention can be practiced as a method, apparatus, system, or the like. When implemented in software, the constituent means of the present invention are code segments that necessarily perform the necessary work. The program or code segments may be stored in a processor readable medium or transmitted by a computer data signal coupled with a carrier on a transmission medium or network. Processor readable media includes any medium that can store or transmit information. Examples of processor-readable media include electronic circuits, semiconductor memory devices, ROMs, flash memory, erasable ROM (EROM), floppy disks, optical disks, hard disks, optical fiber media, radio frequency (RF) networks, Etc. Computer data signals include any signal that can propagate over transmission media such as electronic network channels, optical fibers, air, electromagnetic fields, RF networks, and the like.

Specific embodiments shown and described in the accompanying drawings are only to be understood as an example of the present invention, not to limit the scope of the invention, but also within the scope of the technical spirit described in the present invention in the technical field to which the present invention belongs As various other changes may occur, it is obvious that the invention is not limited to the specific constructions and arrangements shown or described.

As described above, according to the present invention, by controlling the drive to perform master / slave / cable select mode switching of the drive, there is no need to open the case and change the position of the shunt pin to change the mode of the drive as compared to the conventional technology. As a result, a user-friendly effect is generated, and a hardware circuit configuration for mode change is unnecessary, thereby reducing the material cost.

Claims (6)

delete delete In the drive master / slave setup method, (a) determining whether a drive master / slave / cable select mode change command is received from the host device; And (b) when the master / slave / cable select mode change command is received as a result of the determination of step (a), corresponding to the respective modes of the master / slave / cable select stored in the maintenance cylinder area of the disc embedded in the drive; Selecting a file of the mode to be changed among the files to be downloaded to the memory, characterized in that the master / slave setting method for a data storage device. delete delete In the data storage device, A disk for storing firmware corresponding to each mode of the master / slave / cable select in the maintenance cylinder region in the form of a file; A host interface for performing data transmission / reception processing with the host device; A memory for storing firmware for controlling the disk drive in accordance with the set mode; A file of a mode to be changed from the maintenance cylinder area of the disk when a control operation corresponding to a command received from a host device is executed using the firmware stored in the memory and a master / slave / cable select mode change command is received. A controller which controls reading of the memory and updating the firmware of the memory; And And a write / read circuit for writing data received through the host interface to the disc or performing data processing for reading data from the disc.

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