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PRODUCT DESCRIPTION

2 – 5

Major HDA Components

Drive Mechanism

A brush-less DC direct drive motor rotates the spindle at 5,400 RPM (±0.1%). The dynamically balanced
motor/spindle assembly ensures minimal mechanical run-out to the disks. A dynamic brake provides a fast
stop to the spindle motor upon power removal. The speed tolerance includes motor performance and motor
circuit tolerances.

Rotary Actuator

All DiamondMax VL 20 drives employ a rotary voice coil actuator which consists of a moving coil, an
actuator arm assembly and stationary magnets. The actuator moves on a low-mass, low-friction center shaft.
The low friction contributes to fast access times and low power consumption.

Read/Write Electronics

An integrated circuit mounted within the sealed head disk assembly (near the read/write heads) provides up
to eight head selection (depending on the model), read pre-amplification and write drive circuitry.

Read/Write Heads and Media

Low mass, low force giant magneto-resistive read/write heads record data on 3.5-inch diameter disks. Maxtor
uses a sputtered thin film medium on all disks for DiamondMax VL 20 drives.

Air Filtration System

All DiamondMax VL 20 drives are assembled in a Class 100 controlled environment. Over the life of the
drive, a 0.1 micron filter and breather filter located within the sealed head disk assembly (HDA) maintain a
clean environment to the heads and disks. DiamondMax VL 20 drives are designed to operate in a typical
office environment with minimum environmental control.

Microprocessor

The microprocessor controls the following functions for the drive electronics:

Command execution

Cache management

Data correction and error recovery

Diagnostic execution

Data sequencing

Head positioning (including error recovery)

Host interface

Index detection

Spin speed control

Seeks

Servo

S.M.A.R.T.

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Содержание 91021U2

Страница 1: ...tor Corporation Other brands or products are trademarks or registered trademarks of their respective holders Contents and specifications subject to change without notice All rights reserved Corporate Headquarters 510 Cottonwood Drive Milpitas California 95035 Tel 408 432 1700 Fax 408 432 4510 Research and Development Engineering Center 2190 Miller Drive Longmont Colorado 80501 Tel 303 651 6000 Fax...

Страница 2: ...ad to product failure damage and invalidation of all warranties 1 BEFOREunpackingorhandlingadrive takeallproperelectro staticdischarge ESD precautions includingpersonnelandequipmentgrounding Stand alonedrivesaresensitiveto ESDdamage 2 BEFOREremovingdrivesfromtheirpackingmaterial allowthemtoreachroom temperature 3 Duringhandling NEVERdrop jar orbumpadrive 4 OnceadriveisremovedfromtheMaxtorshippingc...

Страница 3: ...Sector Address Translation 2 2 Logical Block Addressing 2 3 Defect Management Zone 2 3 On the Fly Hardware Error Correction Code ECC 2 3 Software ECC Correction 2 3 Automatic Head Park and Lock Operation 2 3 Cache Management 2 4 Buffer Segmentation 2 4 Read Ahead Mode 2 4 Automatic Write Reallocation AWR 2 4 Write Cache Stacking 2 4 Major HDA Components 2 5 Drive Mechanism 2 5 Rotary Actuator 2 5 ...

Страница 4: ...3 4 Start Stop Cycles 3 4 Data Reliability 3 4 Component Design Life 3 4 EMC EMI 3 5 EMC Compliance 3 5 Canadian Emissions Statement 3 5 Safety Regulatory Compliance 3 5 Section 4 Handling and Installation Pre formatted Drive 4 1 Important Notice 4 1 Hard Drive Handling Precautions 4 1 Electro Static Discharge ESD 4 1 Unpacking and Inspection 4 2 Repacking 4 3 Physical Installation 4 3 Before You ...

Страница 5: ...oot 4 12 Section 5 AT Interface Description Interface Connector 5 1 Pin Description Summary 5 1 Pin Description Table 5 2 PIO Timing 5 3 DMA Timing 5 4 Ultra DMA Timing Parameters 5 5 Section 6 Host Software Interface Task File Registers 6 1 Data Register 6 1 Error Register 6 1 Features Register 6 1 Sector Count Register 6 2 Sector Number Register 6 2 Cylinder Number Registers 6 2 Device Head Regi...

Страница 6: ...Verify Sector s 7 4 Write Sector Buffer 7 4 Write DMA 7 5 Write Multiple 7 5 Ultra DMA 7 5 Set Feature Commands 7 5 Set Features Mode 7 5 Power Mode Commands 7 7 Standby Immediate 7 7 Idle Immediate 7 7 Standby 7 7 Idle 7 7 Check Power Mode 7 7 Set Sleep Mode 7 7 Default Power on Condition 7 7 Initialization Commands 7 9 Identify Drive 7 9 Initialize Drive Parameters 7 12 Seek Format and Diagnosti...

Страница 7: ...Slave and Cable Select Settings 4 10 5 1 Data Connector 5 1 5 2 PIO Data Transfer to from Device 5 3 5 3 Multi word DMA Data Transfer 5 4 5 4 Initiating an Ultra DMA Data In Burst 5 5 5 5 Sustained Ultra DMA Data In Burst 5 6 5 6 Host Pausing an Ultra DMA Data In Burst 5 6 5 7 Device Terminating an Ultra DMA Data In Burst 5 7 5 8 Host Terminating an Ultra DMA Data In Burst 5 7 5 9 Initiating an Ul...

Страница 8: ... accurately and in the form you prefer a fax a downloaded file or a conversation with a representative Manual Organization This hard disk drive reference manual is organized in the following method Section 1 Introduction Section 2 Description Section 3 Specifications Section 4 Installation Section 5 AT Interface Section 6 Host Software Interface Section 7 Interface Commands Section 8 Service and S...

Страница 9: ... are shown in all uppercase type All signals are either high active or low active signals A dash character at the end of a signal name indicates that the signal is low active A low active signal is true when it is below ViL and is false when it is above ViH A signal without a dash at the end indicates that the signal is high active A high active signal is true when it is above ViH and is false whe...

Страница 10: ...cations where disk storage value is paramount Available in capacities up to 20 GB the VL series provides the proven quality and reliability of the original DiamondMax products and includes an UltraDMA 66 interface 512 KB buffer and 9 5 ms seek performance DiamondMax VL 20 Key Features ANSI ATA 5 compliant PIO Mode 4 interface Enhanced IDE Supports Ultra DMA Mode 4 for up to 66 7 MB sec data transf...

Страница 11: ...mproving host performance UltraDMA Mode 4 Maxtor DiamondMax VL 20 hard drives fully comply with the new ANSI Ultra DMA protocol which greatly improves overall AT interface performance by significantly improving burst and sustained data throughput Multi word DMA EISA Type B Mode 2 Supports multi word Direct Memory Access DMA EISA Type B mode transfers Sector Address Translation All DiamondMax VL 20...

Страница 12: ...der head and sector values The physical address is then used to access or store the data on the disk and for other drive related operations Defect Management Zone DMZ Each drive model has a fixed number of spare sectors per drive all of which are located at the end of the drive Upon detection of a bad sector that has been reassigned the next sequential sector is used For example if sector 3 is fla...

Страница 13: ...sfer begins immediately Automatic Write Reallocation AWR This feature is part of the write cache and reduces the risk of data loss during deferred write operations If a disk error occurs during the disk write process the disk task stops and the suspect sector is reallocated to a pool of alternate sectors located at the end of the drive Following reallocation the disk write task continues until it ...

Страница 14: ...p to eight head selection depending on the model read pre amplification and write drive circuitry Read Write Heads and Media Low mass low force giant magneto resistive read write heads record data on 3 5 inch diameter disks Maxtor uses a sputtered thin film medium on all disks for DiamondMax VL 20 drives Air Filtration System All DiamondMax VL 20 drives are assembled in a Class 100 controlled envi...

Страница 15: ...nship exists between the two drives device 0 is the master and device 1 the slave When J50 is closed factory default figure 2 1 the drive assumes the role of master when open the drive acts as a slave In single drive configurations J50 must be closed Cable Select Option CSEL cable select is an optional feature per ANSI ATA specification Drives configured in a multiple drive system are identified b...

Страница 16: ...D r e p s r o t c e S 4 2 6 0 2 0 0 4 6 1 2 5 1 0 0 3 6 1 8 0 1 0 0 2 L E D O M 4 U 1 4 0 2 9 3 U 1 3 5 1 9 2 U 1 2 0 1 9 s e m i T k e e S l a c i p y t k c a r T o t k c a r T s m 0 1 e g a r e v A s m 5 9 m u m i x a M s m 0 0 2 y c n e t a L e g a r e v A s m 5 5 5 d e e p S l a n o i t a t o R 1 0 M P R 0 0 4 5 d a e h r e v O r e l l o r t n o C s m 3 0 e t a R r e f s n a r T a t a D e c a ...

Страница 17: ...C Tap 4 x 6 32 UNC Tap 4 00 01 102 1 mm 3 75 01 95 25 mm Figure 3 1 Outline and Mounting Dimensions R E T E M A R A P D R A D N A T S C I R T E M t h g i e H s e h c n i 2 0 1 s r e t e m i l l i m 9 5 2 h t g n e L s e h c n i 8 7 5 s r e t e m i l l i m 6 6 4 1 h t d i W s e h c n i 0 0 4 s r e t e m i l l i m 1 2 0 1 t h g i e W s d n u o p 3 1 s m a r g o l i k 9 5 0 ...

Страница 18: ...Environmental Protection Agency s Energy Star program to reduce the electrical power consumption of computer equipment Environmental Limits R E T E M A R A P G N I T A R E P O E G A R O T S G N I T A R E P O N O N e r u t a r e p m e T C 5 5 o t C 5 C 0 4 e r u t a r e p m e t w o l 3 1 0 5 d o h t e m E 0 1 8 D T S L I M r e p C 1 7 e r u t a r e p m e t h g i h s n o i t i d n o c d e c u d n i ...

Страница 19: ...allowed with all error recovery features activated Component Design Life 5 years minimum Component design life is defined as a the time period before identified wear out mechanisms impact the failure rate or b the time period up to the wear out point when useful component life expires Shock and Vibration R E T E M A R A P G N I T A R E P O G N I T A R E P O N O N k c o h S l a c i n a h c e M s r ...

Страница 20: ...pical personal computer Maxtor recommends that testing and analysis for EMC compliance be performed with the disk mechanism installed within the user s end use application Canadian Emissions Statement This digital apparatus does not exceed the Class B limits for radio noise emissions from digital apparatus as set out in the radio interference regulations of the Canadian department of communication...

Страница 21: ...s associated with ESD Maxtor advises that anyone handling a disk drive use a wrist strap with an attached wire connected to an earth ground Failure to observe these precautions voids the product warranty Manufacturers frequently experience unsolved component hardware malfunctions often caused by ESD To reduce the incidence of ESD related problems Maxtor recommends that any electronics manufacturin...

Страница 22: ...of damage in transit Notify the carrier immediately in case of damage to the shipping container As they are removed inspect drives for evidence of shipping damage or loose hardware If a drive is damaged and no container damage is evident notify Maxtor immediately for drive disposition Figure 4 1 Multi pack Shipping Container ...

Страница 23: ...tistatic bag Physical Installation Recommended Mounting Configuration The DiamondMax drive design allows greater shock tolerance than that afforded by larger heavier drives The drive may be mounted in any attitude using four size 6 32 screws with 1 8 inch maximum penetration and a maximum torque of 5 inch pounds See Figure 3 1 for mounting dimensions Allow adequate ventilation to the drive to ensu...

Страница 24: ...larger than 8 4 GB The Microsoft Windows 95 operating system or equivalent full installation NOT a Windows 95 upgrade from DOS Windows 3 1 or 3 11 is required to obtain the full capacity of any hard drive larger than 8 4 GB Protecting Your Existing Data Periodicbackupofimportantdataisalwaysagoodidea Wheneveryourcomputerison thereisthepotentialforlosingdataonyourharddrive Thisisespeciallytruewhenru...

Страница 25: ... the Master Slave identification of the device Each manufacturer may have its own jumpering scheme to identify the device as a Master or Slave and its relationship to other IDE devices attached to the same cable Jumper Settings A jumper is a small piece of plastic that slides over a pair of configuration pins on the drive to activate a specific function The jumper illustration below shows three va...

Страница 26: ...ter you must determine how the jumpers on the Maxtor hard drive are to be set for your system based upon the use of the Maxtor hard drive as either a Master or Slave device Maxtor hard drives are shipped with the Master jumper setting enabled IMPORTANT If a Maxtor hard drive is being added to a system on the same cable with an existing IDE device it may be necessary to re configure the jumpers on ...

Страница 27: ...n of the IDE interface connectors on the mother board and or interface card and the orientation of pin one is determined by the manufacturer Also older systems and interface cards may have only a single IDE interface connection limiting the system to two IDE devices Refer to the system or interface card user s manual for cable connection and orientation instructions Attach the 40 pin IDE interface...

Страница 28: ...the other IDE devices connected to the system and recorded in the BIOS Most newer BIOS provide the descriptions of Primary Master Primary Slave Secondary Master and Secondary Slave see section 2 which identify the device configuration and location on an IDE interface and its relationship to the other IDE devices on the same interface or ribbon cable Some older BIOS versions do not use this termino...

Страница 29: ... by the operating system and not by the BIOS or MaxBlast The operating system assigns drive letters to all devices as follows 1 to all hard drives and their partitions 2 to all other devices like CD ROM s and tape drives When adding an additional hard drive to the system the drive letters will be automatically changed by the operating system A Preparing the hard drive using the operating system so...

Страница 30: ...hard drive either before or after setting the system BIOS the system many have a BIOS with a cylinder limitation This may occur for hard drives that exceed 2 1 GB If this happens do the following 1 Turn the system OFF 2 Install the cylinder limitation jumper J46 on the drive The figure below shows the Maxtor hard drive configured as a Master or Slave device with the cylinderlimitationjumperinstall...

Страница 31: ...ry N I P L A N G I S N I P L A N G I S 1 0 t e s e R 2 0 d n u o r G 3 0 7 D D 4 0 8 D D 5 0 6 D D 6 0 9 D D 7 0 5 D D 8 0 0 1 D D 9 0 4 D D 0 1 1 1 D D 1 1 3 D D 2 1 2 1 D D 3 1 2 D D 4 1 3 1 D D 5 1 1 D D 6 1 4 1 D D 7 1 0 D D 8 1 5 1 D D 9 1 d n u o r G 0 2 n i p y e k 1 2 Q R A M D 2 2 d n u o r G 3 2 P O T S W O I D 4 2 d n u o r G 5 2 E B O R T S H Y D R A M D H R O I D 6 2 d n u o r G 7 2 E...

Страница 32: ... a r t l U g n i r u d e b o r t s a t a D L E S C 8 2 t c e l e S e l b a C m e t s y s t s o h n o g n i l b a c l a i c e p s s e r i u q e R e l b a c a i v n o i t c e l e s e v a l S r e t s a M r o f d e s U r e p m u j t c e l e S e l b a C f o n o i t a l l a t s n i d n a K C A M D 9 2 I e g d e l w o n k c A A M D e h t l a n g i s s i h t g n i t r e s s a y B s r e f s n a r t A M D r...

Страница 33: ... s n 0 2 4 t n i m d l o h a t a d W O I D s n 0 3 s n 0 2 s n 5 1 s n 0 1 s n 0 1 5 t n i m p u t e s a t a d R O I D s n 0 5 s n 5 3 s n 0 2 s n 0 2 s n 0 2 6 t n i m d l o h a t a d W O I D s n 5 s n 5 s n 5 s n 5 s n 5 Z 6 t x a m e t a t s i r t a t a d R O I D s n 0 3 s n 0 3 s n 0 3 s n 0 3 s n 0 3 9 t n i m d l o h d i l a v s s e r d d a o t W O I D R O I D s n 0 2 s n 5 1 s n 0 1 s n 0 1...

Страница 34: ... 0 0 1 s n 0 3 s n 0 2 H t n i m d l o h a t a d W O I D s n 0 2 s n 5 1 s n 0 1 I t n i m p u t e s W O I D R O I D o t K C A M D 0 0 0 J t n i m d l o h K C A M D o t W O I D R O I D s n 0 2 s n 5 s n 5 r K t n i m h t d i w e s l u p d e t a g e n R O I D s n 0 5 s n 0 5 s n 5 2 w K t n i m h t d i w e s l u p d e t a g e n W O I D s n 5 1 2 s n 0 5 s n 5 2 r L t x a m y a l e d Q R A M D o t R...

Страница 35: ... f d e w o l l a e m i t m u m i x a M 0 1 0 1 0 1 0 1 0 1 t H A Z n o g n i n r u t s r e v i r d t u p t u o r o f d e r i u q e r e m i t y a l e d m u m i n i M e t a t s d e s a e l e r m o r f 0 2 0 2 0 2 0 2 0 2 t D A Z 0 0 0 0 0 t V N E e m i t e p o l e v n E e h t n i h t i w e r a s n o i t i s n a r t l a n g i s l o r t n o c l l a e m i t h c u m s i h t y b e p o l e v n e K C A M D...

Страница 36: ...DVH DSTROBE at device DD 15 0 at device DSTROBE at host DD 15 0 at host tDVH tCYC tCYC tDVS tDVS tDH tDS tDH tDS t2CYC tDH tDVH t2CYC DMARQ device DMACK host STOP host HDMARDY host DSTROBE device DD 15 0 device tSR tRFS tRP Figure 5 6 Host Pausing an Ultra DMA Data In Burst ...

Страница 37: ... CS1 tACK tLI tMLI tDVS tLI tACK tACK tZAH tDVH tSS tLI Figure 5 7 Device Terminating an Ultra DMA Data In Burst tDVH CRC tAZ DMARQ device DMACK host STOP host HDMARDY host DSTROBE device DD 15 0 DA0 DA1 DA2 CS0 CS1 tACK tMLI tLI tLI tIORDYZ tACK tACK tZAH tMLI tDVS tRFS tRP Figure 5 8 Host Terminating an Ultra DMA Data In Burst ...

Страница 38: ...device tDVH tCYC tCYC tDVS tDVS tDS tDH t2CYC tDH tDVH t2CYC DMARQ device DMACK host STOP host DDMARDY device HSTROBE host DD 15 0 host DA0 DA1 DA2 CS0 CS1 tUI tACK tENV tZIORDY tLI tDVS tDVH tACK tACK tUI Figure 5 9 Initiating an Ultra DMA Data Out Burst Figure 5 10 Sustained Ultra DMA Data Out Burst ...

Страница 39: ...DD 15 0 host tSR tRFS tRP Figure 5 11 Device Pausing an Ultra DMA Data Out Burst DMARQ device DMACK host STOP host DDMARDY device HSTROBE host DD 15 0 host DA0 DA1 DA2 CS0 CS1 tACK tLI tMLI tDVS tLI tLI tACK tIORDYZ tACK CRC tDVH tSS Figure 5 12 Host Terminating an Ultra DMA Data Out Burst ...

Страница 40: ... 5 10 DMARQ device DMACK host STOP host DDMARDY device HSTROBE host DD 15 0 host DA0 DA1 DA2 CS0 CS1 tACK tMLI tDVS tLI tLI tACK CRC tDVH tACK tIORDYZ tMLI tRP tRFS Figure 5 13 Device Terminating an Ultra DMA Data Out Burst ...

Страница 41: ...ific information regarding the previous command Data interpretation differs depending on whether the controller is in operational or diagnostic mode A power up reset software reset or receipt of a diagnostic command sets the controller into diagnostic mode This mode invalidates contents of the Status register The contents of the Error register reflect a completion code Issuing any command apart fr...

Страница 42: ...slate command S T N E T N O C S T I B A B L r e b m u N r o t c e S 7 0 w o L r e d n i l y C 5 1 8 h g i H r e d n i l y C 3 2 6 1 d a e H e v i r D 7 2 4 2 Drive Select Set to 0 to select the master drive set to 1 to select the slave drive Head Select Specifies the binary coded address of the head to be selected Status Register Contains results of the last command executed and the drive s status...

Страница 43: ...iple C4h Read DMA C8h C9h No retries Write Commands Write Sector s 30h Normal writes retries enabled 31h Normal writes retries disabled 32h Write Long retries enabled 33h Write Long retries disabled Write Verify Sector s 3Ch Write Sector Buffer E8h Write Multiple C5h Write DMA CAh CBh No retries Mode Set Check Commands Set Features EFh Set Multiple Mode C6h Power Mode Commands Standby Immediate 94...

Страница 44: ... i D e t u c e x E 1 0 0 1 0 0 0 0 N N N N D s r e t e m a r a P e z i l a i t i n I 1 0 0 1 0 0 0 1 N Y N N Y r e f f u B r o t c e S d a e R 1 1 1 0 0 1 0 0 N N N N D r e f f u B r o t c e S e t i r W 1 1 1 0 1 0 0 0 N N N N D e v i r D y f i t n e d I 1 1 1 0 1 1 0 0 N N N N D s e r u t a e F t e S 1 1 1 0 1 1 1 1 Y N N N D e l p i t l u M d a e R 1 1 0 0 0 1 0 0 N Y Y Y Y e l p i t l u M e t i...

Страница 45: ...active for a minimum of 5 µsec IRQ Enable Setting the Interrupt Request Enable to 0 enables the IRQ 14 signal to the host When this bit is set to 1 IRQ14 is tri stated and interrupts to the host are disabled Any pending interrupt occurs when the bit is set to 0 The default state of this bit after power up is 0 interrupt enabled Digital Input Register Contains information about the state of the dri...

Страница 46: ...t clears and the drive completes initialization Completion of a reset operation does not generate a host interrupt Task File registers are initialized as follows Error 1 Sector Count 1 Sector Number 1 Cylinder Low 0 Cylinder High 0 Drive Head 0 Interrupt Handling The drive requests data transfers to and from the host by asserting its IRQ 14 signal This signal interrupts the host if enabled by bit ...

Страница 47: ...or s Read Sector Buffer Read DMA Multi word DMA Ultra DMA Read Multiple Set Multiple Write Commands Write Sector s Write Verify Sector s Write Sector Buffer Write DMA Multi word DMA Ultra DMA Write Multiple Set Feature Commands Set Features Mode Power Mode Commands Standby Immediate Idle Immediate Standby Idle Check Power Mode Set Sleep Mode Default Power on Condition Initialization Commands Ident...

Страница 48: ...contain the numbers of the cylinder head and sector of the last sector read Back to back sector read commands set DRQ and generate an interrupt when the sector buffer is filled at the completion of each sector The drive is then ready for the data to be read by the host DRQ is reset and BSY is set immediately when the host empties the sector buffer If an error occurs during Read Sector commands the...

Страница 49: ...CTOR S command except that 1 Several sectors are transferred to the host as a block without intervening interrupts 2 DRQ qualification of the transfer is required only at the start of each block not of each sector The block count consists of the number of sectors to be transferred as a block The block count is programmed by the Set Multiple Mode command which must be executed prior to the Read Mul...

Страница 50: ...mber of the last sector written The next time the buffer is ready to be filled during back to back Write Sector commands DRQ is set and an interrupt is generated After the host fills the buffer DRQ is reset and BSY is set If an error occurs Write Sector operations terminate at the sector containing the error The Command Block registers then contain the numbers of the cylinder head and sector where...

Страница 51: ...commands report after the attempted disk write of the block or partial block in which the error occurred The write operation ends with the sector in error even if it was in the middle of a block When an error occurs subsequent blocks are not transferred When DRQ is set at the beginning of each full and partial block interrupts are generated Write DMA Multi word DMA Identical to the Write Sector s ...

Страница 52: ...o t c e S n i e u l a v n o d e s a b e d o m r e f s n a r t t e S h 4 4 e h t n i d e i f i c e p s s d n a m m o c g n o L e t i r W g n o L d a e R n o d e d n e p p a a t a d f o h t g n e L n o i t a m r o f n i e c i v e D y f i t n e d I h 5 5 e r u t a e f d a e h a k o o l d a e r e l b a s i D h 6 6 s t l u a f e d n o r e w o p o t g n i t r e v e r e l b a s i D h 2 8 e h c a c e t i ...

Страница 53: ...uence is not executed A non zero value placed in the Sector Count register will enable the Automatic Power Down sequence and their timer will begin counting down immediately A value of zero placed in the Sector Count register will disable the Automatic Power Down sequence The actuator is parked and some circuits are powered off Check Power Mode 98h E5h This command returns a code in the Sector Cou...

Страница 54: ...2 3 5 2 0 1 d o i r e p e u q i n u r o d n e V s r u o h 4 5 2 d e v r e s e R 5 5 2 s d n o c e s 5 1 s e t u n i m 1 2 While the drive is in STANDBY MODE any commands received from the host are accepted and executed as they would in normal operation except that the spin motor is started if required to execute a disk command Under these conditions the drive will set BSY when command processing w...

Страница 55: ... e p s r o t c e s l a c i g o l f o r e b m u N 8 7 d e v r e s e R 9 d e r i t e R 9 1 0 1 s r e t c a r a h c I I C S A 0 2 r e b m u n l a i r e s e v i r D 0 2 d e s u t o N 1 2 d e i f i c e p s t o n h 0 0 0 0 s t n e m e r c n i e t y b 2 1 5 n i e z i s r e f f u B 2 2 s d n a m m o c g n o L e t i r W d a e R n o e l b a l i a v a s e t y b c i f i c e p s r o t x a M f o r e b m u N 6 2...

Страница 56: ... t l u m m u m i n i M 6 6 s d n o c e s o n a n n i e m i t e l c y c 0 5 1 e m i t e l c y c r e f s n a r t A M D d r o w i t l u m d e d e m m o c e r s r e r u t c a f u n a M 7 6 s d n o c e s o n a n n i e m i t e l c y c 0 5 1 l o r t n o c w o l f t u o h t i w e m i t e l c y c r e f s n a r t O I P m u m i n i M 8 6 s d n o c e s o n a n n i e m i t e l c y c 0 5 1 l o r t n o c w o l f...

Страница 57: ... 8 d n a 6 8 5 8 s d r o w f I d e l b a n e s t e s d n a m m o C d e t r o p p u s o r e z o t d e r a e l c e b l l a h s 5 1 e n o o t t e s e b l l a h s 4 1 d e v r e s e r 1 3 1 d n a m m o c e d o c o r c i M d a o l n w o D s t r o p p u s 1 0 7 8 t o n n o i t a c i f i t o n t e s d n a m m o c h F F F F r o h 0 0 0 0 7 8 d n a 6 8 5 8 s d r o w f I d e l b a n e s t e s d n a m m o C d...

Страница 58: ...and the drive 1 Sets BSY 2 Saves the parameters 3 Resets BSY and 4 Generates an interrupt To specify maximum heads write 1 less than the maximum e g write 4 for a 5 head drive To specify maximum sectors specify the actual number of sectors e g 17 for a maximum of 17 sectors track The sector count and head values are not checked for validity by this command If they are invalid no error will be post...

Страница 59: ...eady on the desired track an implied seek is performed Once at the desired track the data fields are written with all zeroes Execute Drive Diagnostic Commands the drive to implement the internal diagnostic tests These tests are executed only upon command receipt they do not run automatically at power up or after a reset The drive sets BSY immediately upon receiving this command The following table...

Страница 60: ...ands and their respective codes are D0h S M A R T Read Attribute Value This feature returns 512 bytes of attribute information to the host D1h S M A R T Read Attribute Thresholds This feature returns 512 bytes of warranty failure thresholds to the host D2h Enable Disable Autosave To enable this feature set the sector count register to F1h enable or 0 disable Attribute values are automatically save...

Страница 61: ... Maxtor s No Quibble Service policy By minimizing paperwork and processing No Quibble Service dramatically cuts the turnaround time normally required for repairs and returns Here s how it works 1 Customer visits www maxtor com or calls 1 800 2MAXTOR for a Return Material Authorization RMA number and provides a credit card number 2 Maxtor ships a replacement drive within 2 business days and 3 Custo...

Страница 62: ...tone phone to listen to technical information about Maxtor products and the top Q A s from our 24 hour automated voice system Continental USA 800 2MAXTOR 800 262 9867 Press 1 wait for announcement listen for option Outside Continental USA 303 678 2015 listen for option MaxFax MaxFax MaxFax MaxFax MaxFax Service Service Service Service Service Use a touch tone phone to order technical reference she...

Страница 63: ...cess time The average time to make all possible length accesses seeks average seek time The average time to make all possible length seeks A typical measure of performance B B B B B bad block A block that cannot store data because of a media flaw bit An abbreviation for binary digit of which there are two 0 and 1 A bit is the basic data unit of most digital computers A bit is usually part of a dat...

Страница 64: ...e simultaneously under the set of read write heads This three dimensional storage volume can be accessed after a single seek cylinder zero The outermost cylinder in a drive that can be used for data storage D D D D D data An ordered collection of information In a specific case it is the information processed by a computer data separator An electronic circuit which decodes playback data and produce...

Страница 65: ...rection code ECC A mathematical algorithm that can detect and correct errors in a data field This is accomplished with the aid of Check Bits added to the raw data error free A recording surface that has no defects error rate The number of errors type must be specified that occur in a specified number of bits read error recovery procedure The process that occurs in response to a data error In a dri...

Страница 66: ...eference Used to update the physical disk address tracks and sectors of files and to expedite accesses inside diameter The smallest radial position used for the recording and playback of flux reversals on a magnetic disk surface initialization Applying input patterns or instructions to a device so that all operational parameters are at a known value input Data entering the computer to be processed...

Страница 67: ...processor It is usually but not necessarily desktop size microprocessor A central processing unit CPU manufactured as a chip or a small number of chips missing pulse A term used in surface certification It is when a prerecorded signal is reduced in amplitude by a certain specified percentage modified frequency modulation MFM A method of encoding digital data signals for recording on magnetic media...

Страница 68: ...are performed by the host processor using PIO register accesses to the data register plated thin film media Magnetic disk memory media having its surface plated with a thin coating of a metallic alloy instead of being coated with oxide processing The process of the computer handling manipulating and modifying data such as arithmetic calculation file lookup and updating and word pressing pulse crow...

Страница 69: ...e read write head on track can be either open loop quasi closed loop or closed loop servo track A track on a servo surface The prerecorded reference track on the dedicated servo surface of a disk drive All data track positions are compared to their corresponding servo track to determine off track on track position settling time The time it takes a head to stop vibrating within specified limits aft...

Страница 70: ... in question with or without repositioning the head V V V V V voice coil motor A positioning motor that uses the same principle as a voice coil in a loudspeaker The motor has no detent positions The mechanical motion output of it can be either rotary or linear W W W W W Whitney head A successor to the original Winchester read write head design The primary change was to make the flexure smaller and...

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