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C141-E106-01EN

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5.6.3

Ultra DMA data transfer

Figures 5.10 through 5.19 define the timings associated with all phases of Ultra DMA bursts.

Table 5.16 contains the values for the timings for each of the Ultra DMA Modes.

5.6.3.1 Initiating an Ultra DMA data in burst

5.6.3.2 contains the values for the timings for each of the Ultra DMA Modes.

Note:

The definitions for the STOP, HDMARDY-and DSTROBE signal lines are not in effect until
DMARQ and DMACK are asserted.

Figure 5.10 Initiating an Ultra DMA data in burst

Summary of Contents for MPF3204AH

Page 1: ...C141 E106 01EN MPF3xxxAH DISK DRIVES PRODUCT MANUAL ...

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Page 4: ...ES PRODUCT MANUAL C141 E106 This manual DEVICE OVERVIEW DEVICE CONFIGURATION INSTALLATION CONDITIONS THEORY OF DEVICE OPERATION INTERFACE OPERATIONS MPF3xxxAH DISK DRIVES MAINTENANCE MANUAL C141 F044 MAINTENANCE AND DIAGNOSIS REMOVAL AND REPLACEMENT PROCEDURE ...

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Page 6: ... drives into user systems This manual assumes that users have a basic knowledge of hard disk drives and their application in computer systems This manual consists of the following six chapters Chapter 1 DEVICE OVERVIEW Chapter 2 DEVICE CONFIGURATION Chapter 3 INSTALLATION CONDITIONS Chapter 4 THEORY OF DEVICE OPERATION Chapter 5 INTERFACE Chapter 6 OPERATIONS In this manual disk drives may be refe...

Page 7: ... situation could result in minor or moderate personal injury if the user does not perform the procedure correctly This alert signal also indicates that damages to the product or other property may occur if the user does not perform the procedure correctly This indicates information that could help the user use the product more efficiently In the text the alert signal is centered followed below by ...

Page 8: ...ve adjustment repair or replacement Fujitsu is not liable for any other disk drive defects such as those caused by user misoperation or mishandling inappropriate operating environments defects in the power supply or cable problems of the host system or other causes outside the disk drive ...

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Page 10: ...1 5 Acoustic Noise 1 8 1 6 Shock and Vibration 1 9 1 7 Reliability 1 9 1 8 Error Rate 1 10 1 9 Media Defects 1 10 CHAPTER 2 DEVICE CONFIGURATION 2 1 2 1 Device Configuration 2 1 2 2 System Configuration 2 3 2 2 1 ATA interface 2 3 2 2 2 1 drive connection 2 3 2 2 3 2 drives connection 2 3 CHAPTER 3 INSTALLATION CONDITIONS 3 1 3 1 Dimensions 3 1 3 2 Handling Cautions 3 3 3 2 1 General notes 3 3 3 2...

Page 11: ... 2 3 Spindle 4 2 4 2 4 Actuator 4 2 4 2 5 Air filter 4 3 4 3 Circuit Configuration 4 4 4 4 Power on Sequence 4 6 4 5 Self calibration 4 8 4 5 1 Self calibration contents 4 8 4 5 2 Execution timing of self calibration 4 9 4 5 3 Command processing during self calibration 4 9 4 6 Read write Circuit 4 10 4 6 1 Read write preamplifier PreAMP 4 10 4 6 2 Write circuit 4 10 4 6 3 Read circuit 4 11 4 6 4 S...

Page 12: ...71 5 4 4 Other commands 5 72 5 4 5 DMA data transfer commands 5 72 5 5 Ultra DMA feature set 5 74 5 5 1 Overview 5 74 5 5 2 Phases of operation 5 75 5 5 3 Ultra DMA data in commands 5 75 5 5 3 1 Initiating an Ultra DMA data in burst 5 75 5 5 3 2 The data in transfer 5 76 5 5 3 3 Pausing an Ultra DMA data in burst 5 76 5 5 3 4 Terminating an Ultra DMA data in burst 5 77 5 5 4 Ultra DMA data out com...

Page 13: ...0 Host terminating an Ultra DMA data out burst 5 97 5 6 3 11 Device terminating an Ultra DMA data in burst 5 98 5 6 4 Power on and reset 5 99 CHAPTER 6 OPERATIONS 6 1 6 1 Device Response to the Reset 6 1 6 1 1 Response to power on 6 2 6 1 2 Response to hardware reset 6 3 6 1 3 Response to software reset 6 4 6 1 4 Response to diagnostic command 6 5 6 2 Address Translation 6 6 6 2 1 Default paramete...

Page 14: ...ion using CBLID signal Host sensing the condition of the CBLID signal 3 12 3 13 Cable type detection using IDENTIFY DEVICE data Device sensing the condition of the CBLID signal 3 12 3 14 Jumper location 3 13 3 15 Factory default setting 3 14 3 16 Jumper setting of master or slave device 3 14 3 17 Jumper setting of Cable Select 3 15 3 18 Example 1 of Cable Select 3 15 3 19 Example 2 of Cable Select...

Page 15: ...tra DMA data in burst 5 92 5 14 Host terminating an Ultra DMA data in burst 5 93 5 15 Initiating an Ultra DMA data out burst 5 94 5 16 Sustained Ultra DMA data out burst 5 95 5 17 Device pausing an Ultra DMA data out burst 5 96 5 18 Host terminating an Ultra DMA data out burst 5 97 5 19 Device terminating an Ultra DMA data out burst 5 98 5 20 Power on Reset Timing 5 99 6 1 Response to power on 6 2...

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Page 19: ...he disk drive can be connected to an ATA interface of a personal computer 2 2MB data buffer The disk drive uses a 2MB data buffer to transfer data between the host and the disk media In combination with the read ahead cache system described in item 3 and the write cache described in item 6 the buffer contributes to efficient I O processing 3 Read ahead cache system After the execution of a disk re...

Page 20: ...ry The 40 bytes ECC has improved buffer error correction for correctable data errors 6 Write cache When the disk drive receives a write command the disk drive posts the command completion at completion of transferring data to the data buffer completion of writing to the disk media This feature reduces the access time at writing ...

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Page 22: ...s Model Name Capacity user area Mounting Screw Order No Remarks MPF3102AH 10 24 GB No 6 32UNC CA05431 B321 MPF3153AH 15 37 GB No 6 32UNC CA05431 B331 MPF3204AH 20 49 GB No 6 32UNC CA05431 B341 1 3 Power Requirements 1 Input Voltage 5 V 5 12 V 8 2 Ripple 12 V 5 V Maximum 200 mV peak to peak 100 mV peak to peak Frequency DC to 1 MHz DC to 1 MHz ...

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Page 25: ...um Wet Bulb 8 to 80 RH Non condensing 5 to 85 RH Non condensing 29 C Altitude relative to sea level Operating Non operating 60 to 3 000 m 200 to 10 000 ft 60 to 12 000 m 200 to 40 000 ft 1 5 Acoustic Noise Table 1 5 lists the acoustic noise specification Table 1 5 Acoustic noise specification Model MPF3102AH MPF3153AH MPF3204AH Idle mode DRIVE READY 3 7 bels Sound Power per ISO 7779 and ISO9296 Ty...

Page 26: ... mean time between failures MTBF is 500 000 POH power on hours or more operation 24 hours day 7 days week This does not include failures occurring during the first three months after installation MTBF is defined as follows MTBF H Disk drive defects refers to defects that involve repair readjustment or replacement Disk drive defects do not include failures caused by external factors such as damage ...

Page 27: ...ernative blocks can be assigned are not included in the error rate count below It is assumed that the data blocks to be accessed are evenly distributed on the disk media 1 Unrecoverable read error Read errors that cannot be recovered by read retries without user s retry and ECC corrections shall occur no more than 10 times when reading data of 1015 bits Read retries are executed according to the d...

Page 28: ...iguration 2 1 Device Configuration Figure 2 1 shows the disk drive The disk drive consists of a disk enclosure DE read write preamplifier and controller PCA The disk enclosure contains the disk media heads spindle motors actuators and a circulating air filter Figure 2 1 Disk drive outerview ...

Page 29: ...oned by feedback of the servo information read by the read write head If the power is not on or if the spindle motor is stopped the head assembly stays in the specific CSS zone on the disk and is fixed by a mechanical lock 5 Air circulation system The disk enclosure DE is sealed to prevent dust and dirt from entering The disk enclosure features a closed loop air circulation system that relies on t...

Page 30: ...A mode 2 and the ultra DMA transfer till 66 6 MB s Ultra DMA mode 4 2 2 2 1 drive connection ATA interface AT bus Host interface Disk drive HA Host adaptor Host Figure 2 2 1 drive system configuration 2 2 3 2 drives connection ATA interface AT bus Host interface Disk drive 1 Disk drive 0 HA Host adaptor Host Note When the drive that is not conformed to ATA is connected to the disk drive is above c...

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Page 32: ...N CONDITIONS 3 1 Dimensions 3 2 Handling Cautions 3 3 Mounting 3 4 Cable Connections 3 5 Jumper Settings 3 1 Dimensions Figure 3 1 illustrates the dimensions of the disk drive and positions of the mounting screw holes All dimensions are in mm ...

Page 33: ...C141 E106 01EN 3 2 Figure 3 1 Dimensions ...

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Page 35: ... is connected to signal ground SG and the mounting frame is also connected to signal ground These are electrically shorted Note Use No 6 32UNC screw for the mounting screw and the screw length should satisfy the specification in Figure 3 5 3 Limitation of side mounting When the disk drive is mounted using the screw holes on both side of the disk drive use two screw holes shown in Figure 3 4 Do not...

Page 36: ...e 3 5 Mounting frame structure 5 0 or less 4 5 or less 2 B Frame of system cabinet Details of B Details of A Frame of system cabinet Screw Screw PCA DE 2 5 2 5 2 5 A DE Side surface mounting Bottom surface mounting Do not use this screw holes Use these screw holes ...

Page 37: ... in the cabinet such that the PCA side in particular receives sufficient cooling To check the cooling efficiency measure the surface temperatures of the DE Regardless of the ambient temperature this surface temperature must meet the standards listed in Table 3 1 Figure 3 6 shows the temperature measurement point Figure 3 6 Surface temperature measurement points Table 3 1 Surface temperature measur...

Page 38: ...on Figure 3 7 Service area 6 External magnetic fields Avoid mounting the disk drive near strong magnetic sources such as loud speakers Ensure that the disk drive is not affected by external magnetic fields P side Cable connection Mode setting switches R side Mounting screw hole Mounting screw hole Q side Mounting screw hole ...

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Page 41: ...s a fine pitch cable to double the number of conductors available to the 40 pin connector The grounds assigned by the interface are common with the additional 40 conductors to provide a ground between each signal line and provide the effect of a common ground plane 2 The cable assembly may contain up to 3 connectors which shall be uniquely colored as follows All connectors shall have position 20 b...

Page 42: ...a DMA modes greater than mode 2 shall not connect to the PDIAG CBLID signal c Host system that do support Ultra DMA modes greater than mode 2 shall either connect directly to the device without using a cable assembly or determine the cable assembly type Determining the cable assembly type may be done either by the host sensing the condition of the PDIAG CBLID signal see Figure 3 12 or by relying o...

Page 43: ...sensing the condition of the CBLID signal open 0 047 µF 10 or 20 Host Device 0 Device 1 with 80 conductor cable with 40 conductor cable PDIAG CBLID conductor PDIAG CBLID conductor IDENTIFY DEVICE information word 93 bit13 1 Device detected CBLID above VIH IDENTIFY DEVICE information word 93 bit13 0 Device detected CBLID below VIL Host Device 0 Device 1 0 047 µF 10 or 20 Figure 3 13 Cable type dete...

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Page 45: ...elected 8 6 4 2 a Master device shorted b Slave device 9 7 5 3 1 8 6 4 2 9 7 5 3 1 Figure 3 16 Jumper setting of master or slave device Note When the device type is set by the jumper on the device the device should not be configured for cable selection 2 Cable Select CSEL In Cable Select mode the device can be configured either master device or slave device For use of Cable Select function Unique ...

Page 46: ...f the cable and connecting it to ground further the CSEL is set to low level The device is identified as a master device At this time the CSEL of the slave device does not have a conductor Thus since the slave device is not connected to the CSEL conductor the CSEL is set to high level The device is identified as a slave device Open CSEL conductor GND Slave device Master device Host system Figure 3...

Page 47: ...plied Slave Device Master Device Cable Select 8 6 4 2 9 7 5 3 1 8 6 4 2 9 7 5 3 1 8 6 4 2 9 7 5 3 1 Model No of cylinders No of heads No of sectors MPF3102AH 4 092 16 63 MPF3153AH 4 092 16 63 MPF3204AH 4 092 16 63 b Slave present If the slave device does not use the Device Active Slave Present DASP signal to indicate its presence the device is configured as a Master with slave present when the fol...

Page 48: ...e and drive control method 4 2 Subassemblies The disk drive consists of a disk enclosure DE and printed circuit assembly PCA The DE contains all movable parts in the disk drive including the disk spindle actuator read write head and air filter For details see Subsections 4 2 1 to 4 2 5 The PCA contains the control circuits for the disk drive The disk drive has one PCA For details see Sections 4 3 ...

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Page 50: ...around the spindle when the disk starts or stops rotating When disk drives are transported under conditions where the air pressure changes a lot filtered air is circulated in the DE The circulation filter cleans out dust and dirt from inside the DE The disk drive cycles air continuously through the circulation filter through an enclosed loop air cycle system operated by a blower on the rotating di...

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Page 53: ... read write test after enabling response to the ATA bus c After confirming that the spindle motor has reached rated speed the disk drive releases the heads from the actuator magnet lock mechanism by applying current to the VCM This unlocks the heads which are parked at the inner circumference of the disks d The disk drive positions the heads onto the SA area and reads out the system information e ...

Page 54: ...uffer write read test The spindle motor starts Self diagnosis 1 MPU bus test Inner register write read test Work RAM write read test Start Power on Drive ready state command waiting state Execute self calibration Initial on track and read out of system information f e d End Figure 4 3 Power on operation sequence ...

Page 55: ...ation The measured values are stored in the SA cylinder In the self calibration the compensating value is updated using the value in the SA cylinder 2 Compensating open loop gain Torque constant value of the VCM has a dispersion for each drive and varies depending on the cylinder that the head is positioned To realize the high speed seek operation the value that compensates torque constant value c...

Page 56: ...utes About 60 minutes 4 About 30 minutes About 90 minutes 5 About 30 minutes About 120 minutes 6 About 30 minutes About 150 minutes 7 9 Every about 30 minutes 4 5 3 Command processing during self calibration If the disk drive receives a command execution request from the host while executing self calibration according to the timechart the disk drive terminates self calibration and starts executing...

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Page 60: ...rvo control circuit 1 Microprocessor unit MPU The MPU includes DSP unit etc and the MPU starts the spindle motor moves the heads to the reference cylinders seeks the specified cylinder and executes calibration according to the internal operations of the MPU The major internal operations are listed below a Spindle motor start Starts the spindle motor and accelerates it to normal speed when power is...

Page 61: ...he head to the specified cylinder d Calibration Senses and stores the thermal offset between heads and the mechanical forces on the actuator and stores the calibration value Figure 4 5 Physical sector servo configuration on disk surface Servo frame 72 servo frames per revolution ...

Page 62: ...wer amplifier feeds currents corresponding to the DAC output signal voltage to the VCM 6 Spindle motor control circuit The spindle motor control circuit controls the sensor less spindle motor This circuit detects number of revolution of the motor by the interrupt generated periodically compares with the target revolution speed then flows the current into the motor coil according to the differentia...

Page 63: ...a is used as the user data area and SA area 3 Outer guard band This area is located at outer position of the user data area and the rotational speed of the spindle can be controlled on this cylinder area for head moving 4 7 3 Servo frame format As the servo information the drive uses the two phase servo generated from the gray code and Pos A to D This servo information is used for positioning oper...

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Page 65: ...pdates the VCM drive current The servo control of the actuator includes the operation to move the head to the reference cylinder the seek operation to move the head to the target cylinder to read or write data and the track following operation to position the head onto the target track 1 Operation to move the head to the reference cylinder The MPU moves the head to the reference cylinder when the ...

Page 66: ... motor and the 3 phase full half wave analog current control circuit is used as the spindle motor driver called SVC hereafter The firmware operates on the MPU manufactured by Fujitsu The spindle motor is controlled by sending several signals from the MPU to the SVC There are three modes for the spindle control start mode acceleration mode and stable rotation mode 1 Start mode When power is supplie...

Page 67: ...e motor based on the PHASE signal from the SVC The MPU takes a difference between the current time and a time for one revolution at 7 200 rpm that the MPU already recognized Then the MPU keeps the rotational speed to 7 200 rpm by charging or discharging the charge pump for the different time For example when the actual rotational speed is 7 400 rpm the time for one revolution is 8 108 ms And the t...

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Page 69: ... Data bus bit 12 DD12 Data bus bit 13 DD13 Data bus bit 14 DD14 Data bus bit 15 DD15 Device active or slave present see note DASP Device address bit 0 DA0 Device address bit 1 DA1 Device address bit 2 DA2 DMA acknowledge DMACK DMA request DMARQ Interrupt request INTRQ I O read DIOR DMA ready during Ultra DMA data in bursts HDMARDY Data strobe during Ultra DMA data out bursts HSTROBE I O ready IORD...

Page 70: ... GND GND CSEL GND reserved PDIAG CBLID DA2 CS1 GND signal I O Description RESET I Reset signal from the host This signal is low active and is asserted for a minimum of 25 µs during power on The device has a 10 kΩ pull up resistor on this signal DATA 0 15 I O Sixteen bit bi directional data bus between the host and the device These signals are used for data transfer DIOW STOP I DIOW is the strobe s...

Page 71: ...ster When the device is not selected or interrupt is disabled the INTRQ Signal shall be in a high impedance state CS0 I Chip select signal decoded from the host address bus This signal is used by the host to select the command block registers CS1 I Chip select signal decoded from the host address bus This signal is used by the host to select the control block registers DA 0 2 I Binary decoded addr...

Page 72: ...n the IDD is a slave device This signal is pulled up with 10 kΩ resistor DMACK I The host system asserts this signal as a response that the host system receive data or to indicate that data is valid DMARQ O This signal is used for DMA transfer between the host system and the device The device asserts this signal when the device completes the preparation of DMA data transfer to the host system at r...

Page 73: ...tor Number registers are LBA bits The sector No under the LBA mode proceeds in the ascending order with the start point of LBA0 defined as follows LBA0 Cylinder 0 Head 0 Sector 1 Even if the host system changes the assignment of the CHS mode by the INITIALIZE DEVICE PARAMETER command the sector LBA address is not changed LBA Cylinder No Number of head Head No Number of sector track Sector No 1 5 2...

Page 74: ...nd X 1F7 1 1 X X X Invalid Invalid Control block registers 0 1 1 1 0 Alternate Status Device Control X 3F6 0 1 1 1 1 X 3F7 Notes 1 The Data register for read or write operation can be accessed by 16 bit data bus DATA0 to DATA15 2 The registers for read or write operation other than the Data registers can be accessed by 8 bit data bus DATA0 to DATA7 3 When reading the Drive Address register bit 7 i...

Page 75: ... IDNF X ABRT TK0NF AMNF X Unused Bit 7 Interface CRC error ICRC This bit indicates that an interface CRC error has occurred during an Ultra DMA data transfer The content of this bit is not applicable for Multiword DMA transfers Bit 6 Uncorrectable Data Error UNC This bit indicates that an uncorrectable data error has been encountered Bit 5 Unused Bit 4 ID Not Found IDNF This bit indicates an error...

Page 76: ...ation between the host system and the device When the value in this register is X 00 the sector count is 256 When this register indicates X 00 at the completion of the command execution this indicates that the command is completed successfully If the command is not completed successfully this register indicates the number of sectors to be transferred to complete the request from the host system Th...

Page 77: ...h order 8 bits of the cylinder address are set to the Cylinder High register Under the LBA mode this register indicates LBA bits 23 to 16 8 Device Head register X 1F6 The contents of this register indicate the device and the head number When executing INITIALIZE DEVICE PARAMETERS command the contents of this register defines the number of heads minus 1 Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit...

Page 78: ... ns after RESET is negated or SRST is set in the Device Control register the BSY bit is set The BSY bit is cleared when the reset process is completed The BSY bit is set for no longer than 15 seconds after the IDD accepts reset b Within 400 ns from the host system starts writing to the Command register c Within 5 µs following transfer of 512 bytes data during execution of the READ SECTOR S WRITE S...

Page 79: ...us command was being executed The Error register indicates the additional information of the cause for the error 10 Command register X 1F7 The Command register contains a command code being sent to the device After this register is written the command execution starts immediately Table 5 3 lists the executable commands and their command codes This table also lists the necessary parameters for each...

Page 80: ...sets both device simultaneously The slave device is not required to execute the DASP handshake Bit 1 nIEN bit enables an interrupt INTRQ signal from the device to the host When this bit is 0 and the device is selected an interruption INTRQ signal can be enabled through a tri state buffer When this bit is 1 or the device is not selected the INTRQ signal is in the high impedance state 5 3 Host Comma...

Page 81: ...Y WRITE SECTOR S 0 0 1 1 0 0 0 R N Y Y Y Y RECALIBRATE 0 0 0 1 X X X X N N N N D SEEK 0 1 1 1 X X X X N N Y Y Y INITIALIZE DEVICE DIAGNOSTIC 1 0 0 1 0 0 0 1 N Y N N Y IDENTIFY DEVICE 1 1 1 0 1 1 0 0 N N N N D IDENTIFY DEVICE DMA 1 1 1 0 1 1 1 0 N N N N D SET FEATURES 1 1 1 0 1 1 1 1 Y N N N D SET MULTIPLE MODE 1 1 0 0 0 1 1 0 N Y N N D EXECUTE DEVICE DIAGNOSTIC 1 0 0 1 0 0 0 0 N N N N D FORMAT TRA...

Page 82: ... FREEZE LOCK 1 1 1 1 0 1 0 1 N N N N D SECURITY SET PASSWORD 1 1 1 1 0 0 0 1 N N N N D SECURITY UNLOCK 1 1 1 1 0 0 1 0 N N N N D SET MAX ADDRESS 1 1 1 1 1 0 0 1 N Y Y Y Y READ NATIVE MAX ADDRESS 1 1 1 1 1 0 0 0 N N N N D Notes FR Features Register CY Cylinder Registers SC Sector Count Register DH Drive Head Register SN Sector Number Register R R 0 or 1 Y Necessary to set parameters Y Necessary to ...

Page 83: ...A 1F3H SN Start sector No LBA LSB 1F2H SC Transfer sector count 1F1H FR xx At command completion I O registers contents to be read Bit 7 6 5 4 3 2 1 0 1F7H ST Error information 1F6H DH L DV End Head No LBA MSB 1F5H CH End cylinder address MSB LBA 1F4H CL End cylinder address LSB LBA 1F3H SN End sector No LBA LSB 1F2H SC X 00 1F1H ER Error information CM Command register FR Features register DH Dev...

Page 84: ... is not on the track specified by the host the device performs an implied seek After the head reaches to the specified track the device reads the target sector The DRQ bit of the Status register is always set prior to the data transfer regardless of an error condition Upon the completion of the command execution command block registers contain the cylinder head and sector addresses in the CHS mode...

Page 85: ...ULTIPLE MODE command should be executed prior to the READ MULTIPLE command When the READ MULTIPLE command is issued the Sector Count register contains the number of sectors requested not a number of the block count or a number of sectors in a block Upon receipt of this command the device executes this command even if the value of the Sector Count register is less than the defined block count the v...

Page 86: ...xecution example of READ MULTIPLE command At command issuance I O registers setting contents 1F7H CM 1 1 0 0 0 1 0 0 1F6H DH L DV Start head No LBA MSB 1F5H CH 1F4H CL 1F3H SN 1F2H SC 1F1H FR Start cylinder No MSB LBA Start cylinder No LSB LBA Start sector No LBA LSB Transfer sector count xx At command completion I O registers contents to be read 1F7H ST Status information 1F6H DH L DV End head No...

Page 87: ...rror information is the same as the READ SECTOR S command In LBA mode The logical block address is specified using the start head No start cylinder No and first sector No fields At command completion the logical block address of the last sector and remaining number of sectors of which data was not transferred like in the CHS mode are set The host system can select the DMA transfer mode by using th...

Page 88: ... BSY bit of the Status register and generates an interrupt Upon the completion of the command execution the command block registers contain the cylinder head and sector number of the last sector verified If an error occurs the verify operation is terminated at the sector where the error occurred The command block registers contain the cylinder the head and the sector addresses in the CHS mode or t...

Page 89: ...by the host the device performs a implied seek After the head reaches to the specified track the device writes the target sector The data stored in the buffer and CRC code and ECC bytes are written to the data field of the corresponding sector s Upon the completion of the command execution the command block registers contain the cylinder head and sector addresses of the last sector written If an e...

Page 90: ... MODE command should be executed prior to the WRITE MULTIPLE command When the WRITE MULTIPLE command is issued the Sector Count register contains the number of sectors requested not a number of the block count or a number of sectors in a block Upon receipt of this command the device executes this command even if the value of the Sector Count register is less than the defined block count the value ...

Page 91: ... Error information Note When the command terminates due to error only the DV bit and the error information field are valid 7 WRITE DMA X CA or X CB This command operates similarly to the WRITE SECTOR S command except for following events The data transfer starts at the timing of DMARQ signal assertion The device controls the assertion or negation timing of the DMARQ signal The device posts a statu...

Page 92: ... 1F4H CL 1F3H SN 1F2H SC 1F1H ER End cylinder No MSB LBA End cylinder No LSB LBA End sector No LBA LSB 00 1 Error information 1 If the command is terminated due to an error the remaining number of sectors of which data was not transferred is set in this register 8 WRITE VERIFY X 3C This command operates similarly to the WRITE SECTOR S command except that the device verifies each sector immediately...

Page 93: ...0 to X F This command performs the calibration Upon receipt of this command the device sets BSY bit of the Status register and performs a calibration When the device completes the calibration the device updates the Status register clears the BSY bit and generates an interrupt This command can be issued in the LBA mode At command issuance I O registers setting contents 1F7H CM 0 0 0 1 x x x x 1F6H ...

Page 94: ...e this command performs the seek operation to the cylinder and head position in which the sector is specified with the logical block address At command issuance I O registers setting contents 1F7H CM 0 1 1 1 x x x x 1F6H DH L DV Head No LBA MSB 1F5H CH 1F4H CL 1F3H SN 1F2H SC 1F1H FR Cylinder No MSB LBA Cylinder No LSB LBA Sector No LBA LSB xx xx At command completion I O registers contents to be ...

Page 95: ...thin a default area It is recommended that the host system refers the addressable user sectors total number of sectors in word 60 to 61 of the parameter information by the IDENTIFY DEVICE command At command issuance I O registers setting contents 1F7H CM 1 0 0 1 0 0 0 1 1F6H DH DV Max head No 1F5H CH 1F4H CL 1F3H SN 1F2H SC 1F1H FR xx xx xx Number of sectors track xx At command completion I O regi...

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Page 101: ...formation 14 SET FEATURES X EF The host system issues the SET FEATURES command to set parameters in the Features register for the purpose of changing the device features to be executed For the transfer mode Feature register 03 detail setting can be done using the Sector Count register Upon receipt of this command the device sets the BSY bit of the Status register and saves the parameters in the Fe...

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Page 103: ...e and lower 3 bits specifies the binary mode value However the IDD can operate with the PIO transfer mode 4 and multiword DMA transfer mode 2 regardless of reception of the SET FEATURES command for transfer mode setting The IDD supports following values in the Sector Count register value If other value than below is specified an ABORTED COMMAND error is posted PIO default transfer mode 00000 000 X...

Page 104: ... enabled If the value of the Sector Count register is not a supported block count an ABORTED COMMAND error is posted and the READ MULTIPLE and WRITE MULTIPLE commands are disabled If the contents of the Sector Count register is 0 when the SET MULTIPLE MODE command is issued the READ MULTIPLE and WRITE MULTIPLE commands are disabled When the SET MULTIPLE MODE command operation is completed the devi...

Page 105: ... DRV bit of the Drive Head register is to 0 however the DV bit is not checked If two devices are present both devices execute self diagnosis If device 1 is present Both devices shall execute self diagnosis The device 0 waits for up to 5 seconds until device 1 asserts the PDIAG signal If the device 1 does not assert the PDIAG signal but indicates an error the device 0 shall append X 80 to its own d...

Page 106: ...ompletion of 512 byte format parameter transfer from the host system After completion of transfer the device clears the DRQ bits sets the BSY bit However the device does not perform format operation but the drive clears the BYS bit and generates an interrupt soon When the command execution completes the device clears the BSY bit and generates an interrupt The drive supports this command for keep t...

Page 107: ...or No LBA LSB 00 1 Error information 1 If the command is terminated due to an error this register indicates 01 19 WRITE LONG X 32 or X 33 This command operates similarly to the READ SECTOR S command except that the device writes the data and the ECC bytes transferred from the host system to the disk medium The device does not generate ECC bytes by itself The WRITE LONG command supports only single...

Page 108: ...LBA LSB 00 1 Error information 1 If the command is terminated due to an error this register indicates 01 20 READ BUFFER X E4 The host system can read the current contents of the sector buffer of the device by issuing this command Upon receipt of this command the device sets the BSY bit of Status register and sets up the sector buffer for a read operation Then the device sets the DRQ bit of Status ...

Page 109: ...it of the Status register Then the device sets the DRQ bit of Status register and clears the BSY bit when the device is ready to receive the data After that 512 bytes of data is transferred from the host and the device writes the data to the sector buffer then generates an interrupt At command issuance I O registers setting contents 1F7H CM 1 1 1 0 1 0 0 0 1F6H DH DV xx 1F5H CH 1F4H CL 1F3H SN 1F2...

Page 110: ...wn function means that the device automatically enters the standby mode after a certain period of time When the device enters the idle mode the timer starts countdown If any command is not issued while the timer is counting down the device automatically enters the standby mode If any command is issued while the timer is counting down the timer is initialized and the command is executed The timer r...

Page 111: ... the Status register and enters the idle mode Then the device clears the BSY bit and generates an interrupt This command does not support the automatic power down function At command issuance I O registers setting contents 1F7H CM X 95 or X E1 1F6H DH DV xx 1F5H CH 1F4H CL 1F3H SN 1F2H SC 1F1H FR xx xx xx xx xx At command completion I O registers contents to be read 1F7H ST Status information 1F6H...

Page 112: ... the Sector Count register is 0 the automatic power down function is disabled Under the standby mode the spindle motor is stopped Thus when the command involving a seek such as the READ SECTOR s command is received the device processes the command after driving the spindle motor At command issuance I O registers setting contents 1F7H CM X 96 or X E2 1F6H DH DV xx 1F5H CH 1F4H CL 1F3H SN 1F2H SC 1F...

Page 113: ...ceipt of this command the device sets the BSY bit of the Status register and enters the sleep mode The device then clears the BSY bit and generates an interrupt The device generates an interrupt even if the device has not fully entered the sleep mode In the sleep mode the spindle motor is stopped and the ATA interface section is inactive All I O register outputs are in high impedance state The onl...

Page 114: ...is command The host system can confirm the power save mode of the device by analyzing the contents of the Sector Count and Sector Number registers The device sets the BSY bit and sets the following register value After that the device clears the BSY bit and generates an interrupt Power save mode Sector Count register Sector Number register During moving to standby mode Standby mode During returnin...

Page 115: ...pecified in the FR register is supported the Aborted Command error is posted It is necessary for the host to set the keys CL 4Fh and CH C2h in the CL and CH registers prior to issuing this command If the keys are set incorrectly the Aborted Command error is posted When the failure prediction feature is disabled the Aborted Command error is posted in response to subcommands other than SMART Enable ...

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Page 117: ...aring the end of it life In this case the host recommends that the user quickly backs up the data At command issuance I O registers setting contents 1F7H CM 1 0 1 1 0 0 0 0 1F6H DH DV xx 1F5H CH 1F4H CL 1F3H SN 1F2H SC 1F1H FR Key C2h Key 4Fh xx xx Subcommand At command completion I O registers setting contents 1F7H ST Status information 1F6H DH DV xx 1F5H CH 1F4H CL 1F3H SN 1F2H SC 1F1H ER Key fa...

Page 118: ...e SMART Read Attribute Thresholds subcommand FR register D1h Table 5 9 Format of device attribute value data Byte Item 00 01 Data format version number 02 Attribute 1 Attribute ID 03 04 Status flag 05 Current attribute value 06 Attribute value for worst case so far 07 to 0C Raw attribute value 0D Reserved 0E to 169 Attribute 2 to attribute 30 The format of each attribute value is the same as that ...

Page 119: ...ormat of each threshold value is the same as that of bytes 02 to 0D 16A to 17B Reserved 17C to 1FE Unique to vendor 1FF Check sum Data format version number The data format version number indicates the version number of the data format of the device attribute values or insurance failure thresholds The data format version numbers of the device attribute values and insurance failure thresholds are t...

Page 120: ...ttribute is within the insurance range of the device when the attribute exceeds the threshold If this bit is 0 the attribute is outside the insurance range of the device when the attribute exceeds the threshold Bits 1 to 15 Reserved bits Current attribute value The current attribute value is the normalized raw attribute data The value varies between 01h and 64h The closer the value gets to 01h the...

Page 121: ...e Bit 1 The device automatically saves the attribute value data to a medium after the previously set operation Bits 2 to 15 Reserved bits Check sum Two s complement of the lower byte obtained by adding 511 byte data one byte at a time from the beginning Insurance failure threshold The limit of a varying attribute value The host compares the attribute values with the thresholds to identify a failur...

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Page 123: ...ssword the master password is retained To recover the master password issue the SECURITY SET PASSWORD command and reset the user password If the user password or master password transferred from the host does not match the Aborted Command error is returned Issuing this command while in LOCKED MODE or FROZEN MODE returns the Aborted Command error The section about the SECURITY FREEZE LOCK command d...

Page 124: ...n 1F6H DH DV xx 1F5H CH 1F4H CL 1F3H SN 1F2H SC 1F1H ER xx xx xx xx Error information 31 SECURITY ERASE PREPARE F3h The SECURITY ERASE UNIT command feature is enabled by issuing the SECURITY ERASE PREPARE command and then the SECURITY ERASE UNIT command The SECURITY ERASE PREPARE command prevents data from being erased unnecessarily by the SECURITY ERASE UNIT command Issuing this command during FR...

Page 125: ... 512 byte data shown in Table 1 1 to the device The device compares the user password or master password in the transferred data with the user password or master password already set The device erases user data invalidates the user password and releases the lock function if the passwords are the same Although this command invalidates the user password the master password is retained To recover the...

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Page 128: ...ssword is saved as a new user password The lock function is enabled after the device is turned off and then on LOCKED MODE can be canceled using the user password or the master password already set Master High The specified password is saved as a new master password The lock function is not enabled User Maximum The specified password is saved as a new user password The lock function is enabled aft...

Page 129: ... set If the passwords are the same LOCKED MODE is canceled Otherwise the Aborted Command error is returned If the security level in LOCKED MODE is set to the highest level the Aborted Command error is always returned When the user password is selected The password is compared with the user password already set If the passwords are the same LOCKED MODE is canceled Otherwise the Aborted Command erro...

Page 130: ...nformation set by this command is reflected in Words 1 54 57 58 60 and 61 of IDENTIFY DEVICE information If an attempt is made to perform a read or write operation for an address beyond the new address space an ID Not Found error will result When SC register bit 0 VV Value Volatile is 1 the value set by this command is held even after power on and the occurrence of a hard reset When the VV bit is ...

Page 131: ... 1F3H SN Max cylinder MSB Max LBA Max cylinder LSB Max LBA Max sector Max LBA LSB 1F2H SC xx 1F1H ER Error information 37 READ NATIVE MAX ADDRESS F8 This command posts the maximum address intrinsic to the device which can be set by the SET MAX ADDRESS command Upon receipt of this command the device sets the BSY bit and indicates the maximum address in the DH CH CL and SN registers Then it clears B...

Page 132: ...completion I O registers contents to be read 1F7H ST Status information 1F6H DH DV Max head LBA MSB 1F5H CH 1F4H CL 1F3H SN 1F2H SC 1F1H ER Max cylinder MSB Max LBA Max cylinder LSB Max LBA Max sector Max LBA LSB xx Error information ...

Page 133: ...ERS V V V V IDENTIFY DEVICE V V V V IDENTIFY DEVICE DMA V V V V SET FEATURES V V V V SET MULTIPLE MODE V V V V EXECUTE DEVICE DIAGNOSTIC V FORMAT TRACK V V V V V READ LONG V V V V V WRITE LONG V V V V V READ BUFFER V V V V WRITE BUFFER V V V V IDLE V V V V IDLE IMMEDIATE V V V V STANDBY V V V V STANDBY IMMEDIATE V V V V SLEEP V V V V CHECK POWER MODE V V V V SMART V V V V V FLUSH CACHE V V V V V S...

Page 134: ...rameters to the Features Sector Count Sector Number Cylinder and Device Head registers b The host writes a command code to the Command register c The device sets the BSY bit of the Status register and prepares for data transfer d When one sector or block of data is available for transfer to the host the device sets DRQ bit and clears BSY bit The drive then asserts INTRQ signal e After detecting th...

Page 135: ...lection INTRQ DRQ Min 30 µs 1 Expanded Command f d d e e c b a Command BSY INTRQ DRDY Parameter write DRQ Data transfer Figure 5 2 Read Sector s command protocol Even if the error status exists the drive makes a preparation setting the DRQ bit of data transfer It is up to the host whether data is transferred In other words the host should receive the data of the sector 512 bytes of uninsured dummy...

Page 136: ...requests the data transfer setting in DRQ bit the correct device operation is not guaranteed Transfers dummy data The host should receive 512 byte dummy data or release the DRQ set state by resetting Status read Command BSY INTRQ DRDY Parameter write DRQ Data transfer Figure 5 3 Protocol for command abort 5 4 2 Data transferring commands from host to device The execution of the following commands ...

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Page 138: ...ansfer DRQ bit is set or when the host executes resetting the device correct operation is not guaranteed 5 4 3 Commands without data transfer Execution of the following commands does not involve data transfer between the host and the device RECALIBRATE SEEK READY VERIFY SECTOR S EXECUTE DEVICE DIAGNOSTIC INITIALIZE DEVICE PARAMETERS SET FEATURES SET MULTIPLE MODE IDLE IDLE IMMEDIATE STANDBY STANDB...

Page 139: ...ing for the DMA transfer differs the following point a The host writes any parameters to the Features Sector Count Sector Number Cylinder and Device Head register b The host initializes the DMA channel c The host writes a command code in the Command register d The device sets the BSY bit of the Status register e The device asserts the DMARQ signal after completing the preparation of data transfer ...

Page 140: ... E106 01EN 5 73 Status read Expanded g f e c d a Command BSY INTRQ DRDY Parameter write DRQ Data transfer DRQ Multiword DMA transfer DMACK DMARQ IOR or IOW 0 1 Word n 1 n Figure 5 6 Normal DMA data transfer ...

Page 141: ...s of STROBE are used for data transfers so that the frequency of STROBE is limited to the same frequency as the data The highest fundamental frequency on the cable shall be 16 67 million transitions per second or 8 33 MHz the same as the maximum frequency for PIO Mode 4 and DMA Mode 2 Words in the IDENTIFY DEVICE data indicate support of the Ultra DMA feature and the Ultra DMA Modes the device is ...

Page 142: ...ts 1 The host shall keep DMACK in the negated state before an Ultra DMA burst is initiated 2 The device shall assert DMARQ to initiate an Ultra DMA burst After assertion of DMARQ the device shall not negate DMARQ until after the first negation of DSTROBE 3 Steps 3 4 and 5 may occur in any order or at the same time The host shall assert STOP 4 The host shall negate HDMARDY 5 The host shall negate C...

Page 143: ... DD 15 0 until at least tDVH after generating a DSTROBE edge to latch the data 4 The device shall repeat steps 1 2 and 3 until the data transfer is complete or an Ultra DMA burst is paused whichever occurs first 5 5 3 3 Pausing an Ultra DMA data in burst The following steps shall occur in the order they are listed unless otherwise specifically allowed see 5 6 3 4 and 5 6 3 2 for specific timing re...

Page 144: ...ated 3 The device shall release DD 15 0 no later than tAZ after negating DMARQ 4 The host shall assert STOP within tLI after the device has negated DMARQ The host shall not negate STOP again until after the Ultra DMA burst is terminated 5 The host shall negate HDMARDY within tLI after the device has negated DMARQ The host shall continue to negate HDMARDY until the Ultra DMA burst is terminated Ste...

Page 145: ... device shall stop generating DSTROBE edges within tRFS of the host negating HDMARDY 4 If the host negates HDMARDY within tSR after the device has generated a DSTROBE edge then the host shall be prepared to receive zero or one additional data words If the host negates HDMARDY greater than tSR after the device has generated a DSTROBE edge then the host shall be prepared to receive zero one or two a...

Page 146: ...assert DIOR CS0 CS1 DA2 DA1 or DA0 until at least tACK after negating DMACK 5 5 4 Ultra DMA data out commands 5 5 4 1 Initiating an Ultra DMA data out burst The following steps shall occur in the order they are listed unless otherwise specifically allowed see 5 6 3 7 and 5 6 3 2 for specific timing requirements 1 The host shall keep DMACK in the negated state before an Ultra DMA burst is initiated...

Page 147: ...an tCYC for the selected Ultra DMA Mode The host shall not generate two rising or falling HSTROBE edges more frequently than 2 tCYC for the selected Ultra DMA mode 3 The host shall not change the state of DD 15 0 until at least tDVH after generating an HSTROBE edge to latch the data 4 The host shall repeat steps 1 2 and 3 until the data transfer is complete or an Ultra DMA burst is paused whicheve...

Page 148: ...c timing requirements 1 The host shall initiate termination of an Ultra DMA burst by not generating HSTROBE edges 2 The host shall assert STOP no sooner than tSS after it last generated an HSTROBE edge The host shall not negate STOP again until after the Ultra DMA burst is terminated 3 The device shall negate DMARQ within tLI after the host asserts STOP The device shall not assert DMARQ again unti...

Page 149: ...s generated an HSTROBE edge then the device shall be prepared to receive zero or one additional data words If the device negates DDMARDY greater than tSR after the host has generated an HSTROBE edge then the device shall be prepared to receive zero one or two additional data words The additional data words are a result of cable round trip delay and tRFS timing for the host 5 The device shall negat...

Page 150: ...lculated for the return of STROBE to the asserted state after the Ultra DMA burst termination request has been acknowledged e At the end of any Ultra DMA burst the host shall send the results of its CRC calculation function to the device on DD 15 0 with the negation of DMACK f The device shall then compare the CRC data from the host with the calculated value in its own CRC calculation function If ...

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Page 152: ...er selection setup time for DIOR DIOW 25 ns t2 Pulse width of DIOR DIOW 70 ns t2i Recovery time of DIOR DIOW 25 ns t3 Data setup time for DIOW 20 ns t4 Data hold time for DIOW 10 ns t5 Time from DIOR assertion to read data available 50 ns t6 Data hold time for DIOR 5 ns t9 Data register selection hold time for DIOR DIOW 10 ns t10 Time from DIOR DIOW assertion to IORDY low level 35 ns t11 Time from...

Page 153: ...parameter Min Max Unit t0 Cycle time 120 ns tC Delay time from DMACK assertion to DMARQ negation 35 ns tD Pulse width of DIOR DIOW 70 ns tE Data setup time for DIOR 30 ns tF Data hold time for DIOR 5 ns tG Data setup time for DIOW 20 ns tH Data hold time for DIOW 10 ns tI DMACK setup time for DIOR DIOW 0 ns tJ DMACK hold time for DIOR DIOW 5 ns tK Continuous time of high level for DIOR DIOW 25 ns ...

Page 154: ...ntains the values for the timings for each of the Ultra DMA Modes 5 6 3 1 Initiating an Ultra DMA data in burst 5 6 3 2 contains the values for the timings for each of the Ultra DMA Modes Note The definitions for the STOP HDMARDY and DSTROBE signal lines are not in effect until DMARQ and DMACK are asserted Figure 5 10 Initiating an Ultra DMA data in burst ...

Page 155: ...FS 0 230 0 200 0 170 0 130 0 120 First STROBE time for device to first negate DSTROBE from STOP during a data in burst tLI 0 150 0 150 0 150 0 100 0 100 Limited interlock time see Note 3 tMLI 20 20 20 20 20 Interlock time with minimum see Note 3 tUI 0 0 0 0 0 Unlimited interlock time see Note 3 tAZ 10 10 10 10 10 Maximum time allowed for output drivers to release from asserted or negated tZAH 20 2...

Page 156: ...shall stop generating STROBE edges tRFS after the negation of DMARDY Both STROBE and DMARDY timing measurements are taken at the connector of the sender 2 All timing measurement switching points low to high and high to low shall be taken at 1 5 V 3 tUI tMLI and tLI indicate sender to recipient or recipient to sender interlocks i e one agent either sender or recipient is waiting for the other agent...

Page 157: ... Ultra DMA Modes Note DD 15 0 and DSTROBE are shown at both the host and the device to emphasize that cable setting time as well as cable propagation delay shall not allow the data signals to be considered stable at the host until some time after they are driven by the device Figure 5 11 Sustained Ultra DMA data in burst ...

Page 158: ... for each of the Ultra DMA Modes Notes 1 The host may assert STOP to request termination of the Ultra DMA burst no sooner than tRP after HDMARDY is negated 2 If the tSR timing is not satisfied the host may receive zero one or two more data words from the device Figure 5 12 Host pausing an Ultra DMA data in burst ...

Page 159: ...in burst 5 6 3 2 contains the values for the timings for each of the Ultra DMA Modes Note The definitions for the STOP HDMARDY and DSTROBE signal lines are no longer in effect after DMARQ and DMACK are negated Figure 5 13 Device terminating an Ultra DMA data in burst ...

Page 160: ...in burst 5 6 3 2 contains the values for the timings for each of the Ultra DMA Modes Note The definitions for the STOP HDMARDY and DSTROBE signal lines are no longer in effect after DMARQ and DMACK are negated Figure 5 14 Host terminating an Ultra DMA data in burst ...

Page 161: ... out burst 5 6 3 2 contains the values for the timings for each of the Ultra DMA Modes Note The definitions for the STOP DDMARDY and HSTROBE signal lines are not in effect until DMARQ and DMACK are asserted Figure 5 15 Initiating an Ultra DMA data out burst ...

Page 162: ...ra DMA Modes Note DD 15 0 and HSTROBE signals are shown at both the device and the host to emphasize that cable setting time as well as cable propagation delay shall not allow the data signals to be considered stable at the device until some time after they are driven by the host Figure 5 16 Sustained Ultra DMA data out burst ...

Page 163: ...or each of the Ultra DMA Modes Notes 1 The device may negate DMARQ to request termination of the Ultra DMA burst no sooner than tRP after DDMARDY is negated 2 If the tSR timing is not satisfied the device may receive zero one or two more data words from the host Figure 5 17 Device pausing an Ultra DMA data out burst ...

Page 164: ...ut burst 5 6 3 2 contains the values for the timings for each of the Ultra DMA Modes Note The definitions for the STOP DDMARDY and HSTROBE signal lines are no longer in effect after DMARQ and DMACK are negated Figure 5 18 Host terminating an Ultra DMA data out burst ...

Page 165: ...in burst 5 6 3 2 contains the values for the timings for each of the Ultra DMA Modes Note The definitions for the STOP DDMARDY and HSTROBE signal lines are no longer in effect after DMARQ and DMACK are negated Figure 5 19 Device terminating an Ultra DMA data out burst ...

Page 166: ...et 2 Master and slave devices are present 2 drives configuration tP Clear Reset Slave device Master device tN DASP PDIAG BSY BSY DASP tQ tR tS Symbol Timing parameter Min Max Unit tM Pulse width of RESET 25 µs tN Time from RESET negation to BSY set 400 ns tP Time from RESET negation to DASP or DIAG negation 1 ms tQ Self diagnostics execution time 30 s tR Time from RESET negation to DASP assertion ...

Page 167: ...This page is intentionally left blank ...

Page 168: ...Address Translation 6 3 Power Save 6 4 Defect Management 6 5 Read Ahead Cache 6 6 Write Cache 6 1 Device Response to the Reset This section describes how the PDIAG and DASP signals responds when the power of the IDD is turned on or the IDD receives a reset or diagnostic command ...

Page 169: ...vice is connected After the slave device device 1 releases its own power on reset state the slave device shall report its presence and the result of power on diagnostics to the master device as described below DASP signal Asserted within 400 ms and negated after the first command is received from the host or within 31 seconds or after executing software reset which ever comes first PDIAG signal Ne...

Page 170: ...e master device recognizes that no slave device is connected After the slave device receives the hardware reset the slave device shall report its presence and the result of the self diagnostics to the master device as described below DASP signal Asserted within 400 ms and negated after the first command is received from the host or within 31 seconds or after executing software reset which ever com...

Page 171: ... presence and the result of the self diagnostics to the master device as described below PDIAG signal negated within 1 ms and asserted within 30 seconds then negated within 31 seconds When the IDD is set to a slave device the IDD asserts the DASP signal when negating the PDIAG signal and negates the DASP signal when asserting the PDIAG signal Max 31 sec Max 30 sec Max 1 ms If the slave device is p...

Page 172: ...CE DIAGNOSTIC command it shall report the result of the self diagnostics to the master device as described below PDIAG signal negated within 1 ms and asserted within 5 seconds then negated within 6 seconds When the IDD is set to a slave device the IDD asserts the DASP signal when negating the PDIAG signal and negates the DASP signal when asserting the PDIAG signal Max 6 sec Max 5 sec Max 1 ms If t...

Page 173: ...default translation mode The parameters in Table 6 1 are called BIOS specification Table 6 1 Default parameters MPF3102AH MPF3153AH MPF3204AH Number of cylinders 16 383 Number of head 16 Number of sectors track 63 Formatted capacity GB 10 24 15 37 20 49 As long as the formatted capacity of the IDD does not exceed the value shown on Table 6 1 the host can freely specify the number of cylinders head...

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Page 177: ...ion A SLEEP command is issued Issued commands are invalid ignored in this mode 6 3 2 Power commands The following commands are available as power commands IDLE IDLE IMMEDIATE STANDBY STANDBY IMMEDIATE SLEEP CHECK POWER MODE 6 4 Defect Management Defective sectors of which the medium defect location is registered in the system space are replaced with spare sectors in the formatting at the factory s...

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Page 181: ...bject of caching operation The following data are object of caching operation 1 Read ahead data read from the disk medium in the data buffer after completion of the command that are object of caching operation 2 Data transferred to the host system once by requesting with the command that are object of caching operation When the sector data requested by the host does not finish storing in the buffe...

Page 182: ...ment Segment only for read DAP HAP 2 Transfers the requested data that already read to the host system with reading the requested data from the disk media Read requested data Stores the read requested data upto this point Empty area DAP HAP 3 After reading the requested data and transferring the requested data to the host system had been completed the disk drive continues to read till a certain am...

Page 183: ... DAP and HAP to the sequential address of the last read command and reads the requested data Empty data Mis hit data 2 The disk drive transfers the requested data that is already read to the host system with reading the requested data Requested data DAP HAP Mis hit data Empty data 3 After completion of the reading and transferring the requested data to the host system the disk drive performs the r...

Page 184: ...sferring data to the host system 1 In the case that the contents of buffer is as follows at receiving a read command Start LBA Last LBA DAP HAP Completion of transferring requested data Hit data Read ahead data 2 The disk drive starts the read ahead operation to the empty area that becomes vacant by data transfer at the same time as the disk drive starts transferring hit data DAP HAP Hit data New ...

Page 185: ...ws for example and the previous command is a sequential read command the disk drive sets the HAP to the address of which the hit data is stored HAP set to hit position for data transfer Last position at previous read command Last position at previous read command Cache data Full hit data Cache data 2 The disk drive transfers the requested data but does not perform the read ahead operation stopped ...

Page 186: ...tored and sets the DAP to the address just after the partially hit data HAP DAP Partially hit data Lack data 2 The disk drive starts transferring partially hit data and reads lack data from the disk media at the same time stopped HAP Requested data to be transferred DAP Partially hit data Lack data ...

Page 187: ...vious command had been completed the latency time occurs to search the target sector If the received command is not a sequential write the drive receives data of sectors requested by the host system as same as sequential write The drive generates the interrupt of command complete after completion of data transfer requested by the host system Received data is processed after completion of the write...

Page 188: ...n is enabled the transferred data from the host by the WRITE SECTOR S is not completely written on the disk medium at the time that the interrupt of command complete is generated When the unrecoverable error occurs during the write operation the command execution is stopped Then when the drive receives the next command it generates an interrupt of abnormal end However an interrupt of abnormal end ...

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