Maxtor D740X-6L 20.0 AT Скачать руководство пользователя страница 58 | Manualshive

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Basic Principles of Operation

5-9

Maxtor D740X-6L 20.0/40.0/60.0/80.0GB AT

• PLL

• Serial Interface

• TA Detection and Correction

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The pre-compensator introduces pre-compensation to the write data received from
the sequencer module in the DCIIA. The pre-compensated data is then passed to the
R/W Pre-Amplifier and written to the disk. Pre-compensation reduces the write
interference from adjacent write bit.

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8$953894

Digital and analog controlled AGC function with input attenuator for extended range.

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Continuous time data filter which can be programmed for each zone rate.

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/63/564/

Digitally controlled and programmable filter for partial response signal conditioning.

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Provides very high speed digitization of the processed read signal.

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8$!

Decodes ADC result into binary bit stream.

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Provides 50/52 code conversion to NRZ. Includes preamble and sync mark
generation and detection.

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Servo processor with servo data recovery and burst demodulation.

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Provides programmable frequencies for each zone data rate.

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Provides digital read clock recovery.

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High speed interface for digital control of all internal blocks.

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Detects thermal asperities’ defective sectors and enables thermal asperity recoveries.

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Содержание D740X-6L 20.0 AT

Страница 1: ......

Страница 2: ...or licensed under one or more of the following U S Patents 4 419 701 4 538 193 4 625 109 4 639 798 4 647 769 4 647 997 4 661 696 4 669 004 4 675 652 4 703 176 4 730 321 4 772 974 4 783 705 4 819 153 4...

Страница 3: ...chnical Data and Computer Software clause at DFARS 252 227 7013 and FAR 52 227 19 THIS PUBLICATION IS PROVIDED AS IS WITHOUT WARRANTY OF ANY KIND EITHER EXPRESS OR IMPLIED INCLUDING BUT NOT LIMITED TO...

Страница 4: ...ment grounding Stand alone drives are sensitive to ESD damage 2 BEFORE removing drives from their packing material allow them to reach room temperature 3 During handling NEVER drop jar or bump a drive...

Страница 5: ...1 Cable Select CS Jumper 1 6 3 3 2 Drive Select DS Jumper 1 7 3 3 3 Master Jumper configuration 1 7 3 3 4 Jumper Parking PK Position 1 7 3 3 5 Alternate Capacity AC 1 8 3 4 ATA BUS ADAPTER 1 9 3 4 1 4...

Страница 6: ...1 5 4 1 3 Power Requirements 1 6 4 1 ACOUSTICS 1 7 4 1 MECHANICAL 1 8 4 1 ENVIRONMENTAL CONDITIONS 1 8 4 1 SHOCK AND VIBRATION 1 9 4 1 HANDLING THE DRIVE 1 10 4 1 RELIABILITY 1 10 4 1 ELECTROMAGNETIC...

Страница 7: ...REGISTER ADDRESS DECODING 6 2 6 5 COMMAND INTERFACE 6 2 6 5 1 General Feature Set 6 2 6 5 2 Multiword DMA 6 3 6 5 3 Ultra DMA Feature Set 6 3 6 5 4 Power Management Feature Set 6 3 6 5 5 Security Mode...

Страница 8: ...nnector and Jumper Location 1 8 Figure 3 7 Mounting Dimensions for the Maxtor D740X 6L Hard Disk Drives 1 10 Figure 3 8 Mounting Screw Clearance for the Maxtor Hard Disk Drives 1 11 Figure 3 9 J1 DC P...

Страница 9: ...es 1 11 Table 5 1 Cylinder Contents 1 3 Table 5 2 Skew Offsets 1 13 Table 6 1 Identify Device Parameters 6 5 Table 6 2 Supported Features 6 8 Table 6 3 READ DEFECT LIST LENGTH Command Bytes 6 9 Table...

Страница 10: ...Table of Contents ii Maxtor D540X 4K 20 0 40 0 60 0 80 0GB AT...

Страница 11: ...lementation and maintenance The Maxtor D740X 6L 20 0 40 0 60 0 80 0GB AT family of drives provide a high quality low cost market leading 40 GB per disk products to serve the consumer and mainstream co...

Страница 12: ...second MB s megabytes per second MHz megahertz ms milliseconds MSB most significant bit mV millivolts ns nanoseconds tpi tracks per inch s microseconds V volts The typographical and naming convention...

Страница 13: ...lowing the signal An example is RD Messages A message that is sent from the drive to the host is listed in all capitals An example is ILLEGAL COMMAND Naming Conventions Host In general the system in w...

Страница 14: ...About This Manual 1 4 Maxtor D740X 6L 20 0 40 0 60 0 80 0GB AT...

Страница 15: ...use the drive manages media defects and error recovery internally these operations are fully transparent to the user The innovative design of the Maxtor D740X 6L hard disk drives incorporate leading e...

Страница 16: ...transfer modes with PIO mode 4 and multiword DMA mode 2 and Ultra DMA modes 0 1 2 3 4 and 5 Adaptive cache segmentation Reliability 800 000 hours mean time between failure MTBF in the field Automatic...

Страница 17: ...cate is a category certification pertaining to all 3 5 inch series drives models CE Mark authorization is granted by TUV Rheinland in compliance with our qualifying under EN 55022 1994 and EN 50082 1...

Страница 18: ...General Description 2 4 Maxtor D740X 6L 20 0 40 0 60 0 80 0GB AT...

Страница 19: ...prior to operation It also explains how to start up and operate the drive The Maxtor D740X 6L hard disk drives are shipped without a faceplate Figure 3 1 shows the external dimensions of the Maxtor D...

Страница 20: ...y The maximum limits for physical shock can be exceeded if the drive is not handled properly Special care should be taken not to bump or drop the drive It is highly recommended that Maxtor D740X 6L dr...

Страница 21: ...y of a Polypropylene 20 Pack Container Note The 20 pack container should be shipped in the same way it was received from Maxtor When individual drives are shipped from the 20 pack container then it sh...

Страница 22: ...rd disk drive depends on the host system in which it is to be installed This section describes the hardware options that you must take into account prior to installation Figure 3 4 shows the printed c...

Страница 23: ...Alternate Capacity The AT PCB has two jumper locations provided to configure the drive in a system The default configuration for the drive as shipped from the factory is with a jumper across the DS l...

Страница 24: ...ose More than one function is allocated to CS according to the ATA CAM specification see reference to this specification in Chapter 1 If pin 28 is a 0 grounded the drive is configured as a Master If i...

Страница 25: ...ary as follows Note The CS position doubles as the Slave present on this drive When the drive is configured as a Master DS jumper installed or CS jumper installed and the Cable Select signal is set to...

Страница 26: ...ndicated by the maximum CHS requiring LBA addressing to use the full capacity A summary of these effects for the Maxtor D740X 6L drives is shown in the following table AT Connector and Jumper Location...

Страница 27: ...otherboard has an ATA connector simply connect a 40 pin ribbon cable between the drive and the motherboard You should also refer to the motherboard instruction manual and refer to Chapter 6 of this ma...

Страница 28: ...each side of the drive The drive can also be mounted using the four mounting hole locations on the PCB side of the drive Note It is highly recommended that the drive is hard mounted on to the chassis...

Страница 29: ...ing screws The specified screw length allows full use of the mounting hole threads while avoiding damaging or placing unwanted stress on the PCB Figure 3 8 specifies the minimum clearance between the...

Страница 30: ...air temperature does not exceed 131 F 55 C at any point along the drive form factor envelope J1 is a three in one combination connector The drive s DC power can be applied to section A The ATA bus int...

Страница 31: ...rd disk drives the ATA bus interface cable connector J1 section C is a 40 pin Universal Header as shown in Figure 3 9 To prevent the possibility of incorrect installation the connector has been keyed...

Страница 32: ...you need a third party IDE compatible adapter board 2 31 23 Carefully read the manual that accompanies your adapter board before installing it Make sure that all the jumpers are set properly and that...

Страница 33: ...matingconnector of the adapter board Makesurethatpin1oftheconnectormatcheswithpin1onthecable 2 Insert the other end of the cable into the header on the drive When inserting this end of the cable make...

Страница 34: ...reduce the effective capacity of the drive to 528Mbytes Whenever possible the Maxtor D740X 6L 20 0 40 0 60 0 80 0GB AT drive should be used on systems that support LBA translation to ensure the use o...

Страница 35: ...e the following are some techniques that can be used to overcome this barrier Use a third party software that supplements the BIOS and adds Int 13 extension support Obtain a BIOS upgrade from the syst...

Страница 36: ...u must enter the drive type for the Maxtor D740X 6L hard disk drives The drive supports the translation of its physical drive geometry parameters such as cylinders heads and sectors per track to a log...

Страница 37: ...number of cylinders heads and sectors for a particular drive type You must choose a drive type that meets the following requirements For the 10 2GB 20 0GB 30 0GB 40 0GB 60 0GB Logical Cylinders x Log...

Страница 38: ...Installation 3 20 Maxtor D740X 6L 20 0 40 0 60 0 80 0GB AT...

Страница 39: ...ization Zones per surface 15 15 15 15 Tracks per surface 58 970 58 970 58 970 58 970 Total tracks 58 970 117 940 176 910 235 880 Sectors per track Inside zone 481 481 481 481 Outside zone 882 882 882...

Страница 40: ...36Mb sec min 433Mb sec maximum 236Mb sec min 433Mb sec maximum 236Mb sec min 433Mb sec maximum Disk to Read Instantaneously1 257Mb sec minimum 472Mb sec maximum 257Mb sec minimum 472Mb sec maximum 257...

Страница 41: ...the physical capacity shown in Table 4 2 Formatted Capacity Note The AT capacity is artificially limited to a 2 1GB partition boundary Data is transferred from the disk to the read buffer at a rate o...

Страница 42: ...n the supply voltages reach operating range to when the drive is ready to accept any command 6 Drive Ready is the condition in which the disks are rotating at the rated speed and the drive is able to...

Страница 43: ...n either the power or power return line with no loss of data or damage to the disk drive However data may be lost in the sector being written at the time of power loss The drive can withstand transien...

Страница 44: ...Startup current is the typical peak current of the peaks greater than 10 ms in duration This power is required for less than 6 seconds 2 Power requirements reflect nominal for 12V and 5V power 2 0 1 0...

Страница 45: ...e leaves standby upon receipt of a command that requires disk access or upon receiving a spinup command 6 Read Write On Track is defined as 50 read operations and 50 write operations on a single physi...

Страница 46: ...used as needed to meet this requirement 2 The humidity range shown is applicable for temperatures whose combination does not result in condensation in violation of the wet bulb specifications 3 Altit...

Страница 47: ...ecovered error rate will not be exceeded over these conditions 8 Before handling the Maxtor hard disk drive some precautions must to be taken to ensure that the drive is not damaged Use both hands whi...

Страница 48: ...r or a customer would expect from the drive Component Life 5 years Preventive Maintenance PM Not required Start Stop 50 000 cycles at ambient temperature minimum Note CSS specification assumes a duty...

Страница 49: ...ecovered read errors are errors that are not correctable using ECC or retries The drive terminates retry reads either when a repeating error pattern occurs or after the programmed limit for unsuccessf...

Страница 50: ...ves consist of a mechanical assembly and a PCB as shown in Figure 5 1 The head disk assembly HDA contains the mechanical subassemblies of the drive which are sealed under a metal cover The HDA consist...

Страница 51: ...Basic Principles of Operation Maxtor D740X 6L 20 0 40 0 60 0 80 0GB AT 5 2 A Generic Hard Disk Drive Exploded View...

Страница 52: ...by a disk clamp The aluminum alloy disks have a sputtered thin film magnetic coating A carbon overcoat lubricates the disk surface This prevents head and media wear due to head contact with the disk s...

Страница 53: ...dle or off the disk surface Current from the power amplifier induces a magnetic field in the voice coil Fluctuations in the field around the permanent magnet cause the voice coil to move The movement...

Страница 54: ...pregnated breather filter Advanced circuit Very Large Scale Integration design and the use of miniature surface mounted devices and proprietary VLSI components enable the drive electronics including t...

Страница 55: ...xtor D740X 6L 20 0 40 0 60 0 80 0GB AT 5 6 3 5 C 2 112 16 23 2 3 3 4 23 1 The Processor Disk Controller and ATA Interface electronics are contained in a proprietary ASIC developed by Maxtor as shown b...

Страница 56: ...ion Code ECC Control block utilizes a Reed Solomon encoder decoder circuit that is used for disk read write operations It uses a total of 44 redundancy bytes organized as 40 ECC Error Correction Code...

Страница 57: ...Interface Controller portion of the ASIC provides data handling bus control and transfer management services for the ATA interface Configuration and control of the interface is accomplished by the Co...

Страница 58: ...range Continuous time data filter which can be programmed for each zone rate 6 3 5 6 4 Digitally controlled and programmable filter for partial response signal conditioning Provides very high speed di...

Страница 59: ...ead and write operations is dynamically allocated The cache can be flexibly divided into several segments under program control Each segment contains one cache entry A cache entry consists of the requ...

Страница 60: ...of data separated by disk access delays This is achieved by taking advantage of the ability to write blocks of data sequentially on a disk that is formatted with a 1 1 interleave This means that as th...

Страница 61: ...or of data that crosses a cylinder boundary is positioned on the drive such that after a single cylinder seek is performed and when the drive is ready to continue accessing data the sector to be acces...

Страница 62: ...ection codes Maxtor D740X 6L hard disk drive series implement 320 bit Reed Solomon error correction techniques to reduce the uncorrectable read block error rate to less than one bit in 1 x 1014 bits r...

Страница 63: ...mputed and appended to the user data when the sector is first written Sector Data Field with ECC Check Bytes Because the ECC check symbols follow the cross checking bytes errors found within the cross...

Страница 64: ...te message is transferred to the host system e g corrected data etc These features can be enabled or disabled through the ATA Set Con figuration command The EEC bit enables early firmware ECC cor rect...

Страница 65: ...pending defect will be added to the defect list Any subsequent read to the original logical block will return an error if the read is not successful A host command to over write the location will resu...

Страница 66: ...Basic Principles of Operation 5 17 MaxtorD740X 6L 20 0 40 0 60 0 80 0GB AT...

Страница 67: ...configuration jumpers The dimensions of the unitized connector comply with figure A 12 and table A 15 of the ATA ATAPI 6 standard 1 3 4 Signals on the ATA interface are assigned to connector pins acco...

Страница 68: ...loped by Maxtor as shown in Figure 5 3 The Maxtor D740X 6L hard disk drives support all the mandatory commands from the general feature set for non packet devices They are EXECUTE DEVICE DIAGNOSTIC FL...

Страница 69: ...support the Multiword DMA protocol The drives support the Ultra DMA feature set for the following commands READ DMA WRITE DMA 2 3 5 3 The drives support the following commands from the optional Power...

Страница 70: ...SMART feature set SMART DISABLE OPERATIONS SMART ENABLE DISABLE AUTOSAVE SMART ENABLE OPERATIONS SMART RETURN STATUS SMART EXECUTE OFF LINE IMMEDIATE SMART READ DATA SMART READ LOG SECTOR SMART WRITE...

Страница 71: ...045Ah 1 Obsolete 3FFFh 2 Specific configuration 0000h 3 Obsolete 0010h 4 5 Retired 7E00h 5332h 6 Obsolete 003Fh 7 8 Reserved for the CompactFlash Association 0000h 0000h 9 Retired 5154h 10 19 Serial n...

Страница 72: ...nimum 0 1 000h 0 0 51 52 Obsolete 0200h 0200h 53 15 3 2 1 0 Reserved the fields reported in word 88 are valid the fields reported in words 64 70 are valid the fields reported in words 54 58 are valid...

Страница 73: ...ture default 4003h 88 Ultra DMA mode 007Fh 89 Time required for security erase unit completion 0005h 1head 000Ah 2head 000Fh 3head 0014h 4head 90 Time required for Enhanced security erase completion 0...

Страница 74: ...ort the following Maxtor specific commands READ DEFECT LIST READ CONFIGURATION SET CONFIGURATION 6 The READ DEFECT LIST command enables the host to retrieve the drive s defect list Prior to issuing th...

Страница 75: ...list The host begins by writing to address 1F6h to select the drive Then the host writes to addresses 1F2h 1F5h using values indicated in Table 6 4 When the host subsequently writes the extended comma...

Страница 76: ...he bytes are not entered correctly Pending defects will be excluded from the list since no alternate sector is being used as their replacement and since they may be removed from the drive s internal p...

Страница 77: ...s the host to change DisCache and Error Recovery parameters The READ CONFIGURATION command which enables the host to read the current configuration status of the drive See Chapter 5 for more details a...

Страница 78: ...the configuration is to be read set register 1F6h For execution of the command to begin load register 1F7h with F0h A 512 byte data field is associated with the READ CONFIGURATION command A 512 byte r...

Страница 79: ...ve being reconfigured register 1F6h should be set For execution of the command to begin load register 1F7h with F0h 9 6 7 8 9 The SET CONFIGURATION WITHOUT SAVING TO DISK command is secured to prevent...

Страница 80: ...tes 36 through 38 control operation of the error recovery procedure The drive does not use bytes 40 through 511 which should be set to 0 9 8 Configuration Command Format All fields marked RESERVED or...

Страница 81: ...hat is erroneous When the drive ignores an error it does not post the error The RC bit set to 0 indicates that potentially time consuming operations for error recovery are acceptable during data trans...

Страница 82: ...Bit 1 When set to 1 this bit indicates that the Maxtor D740X 6L 20 0 40 0 60 0 80 0GB AT hard disk drives will automatically reallocate uncorrectable hard errors if the ARR bit byte 36 bit 6 is set to...

Страница 83: ...efines the twelve bytes that make up the information for each threshold entry in the device attribute thresholds data structure Attribute entries in the individual threshold data structure must be in...

Страница 84: ...ues from 0x00 to 0xFFh 1 binary Rd only 0x00 always passing threshold value to be used for code test purposes 0x01 minimum value for normal operation 0xFD maximum value for normal operation 0xFE inval...

Страница 85: ...attribute values of 0x00h and 0xFFh are reserved and should not be used by the device SMART capability Bit 0 Pre power mode attribute saving capability If the value of this bit equals one the device w...

Страница 86: ...ed DESCRIPTION This command is used to communicate the reliability status of the device to the host at the host s request Upon receipt of this command the device sets BSY saves any updated attribute v...

Страница 87: ...device to immediately save any updated attribute values to the device s non volatile memory regardless of the state of the attribute autosave timer Upon receipt of this command from the host the devi...

Страница 88: ...ATA Bus Interface and ATA Commands 6 22 Maxtor D740X 6L 20 0 40 0 60 0 80 0GB AT...

Страница 89: ...zone A park utility is not required to park the heads on drives equipped with AIRLOCK all Maxtor drives ALLOCATION The process of assigning particular areas of the disk to particular files See also al...

Страница 90: ...the disk drive CONTROLLER CARD An adapter holding the control electronics for one or more hard disks usually installed in a slot in the computer CPU Acronym for Central Processing Unit The microproce...

Страница 91: ...on the outer edge of a disk that tells the operating system which sectors are allocated to each file and in what order FCI Acronym for flux changes per inch See also BPI FILE SERVER A computer that p...

Страница 92: ...outer track track 0 HOST ADAPTER A plug in board that forms the interface between a particular type of computer system bus and the disk drive I INITIALIZE See low level formatting INITIATOR A SCSI dev...

Страница 93: ...rives are shipped with the low level formatting already done LOW PROFILE Describes drives built to the 3 1 2 inch form factor which are only 1 inch high M MB See megabyte MEDIA The magnetic film that...

Страница 94: ...r rigid material that is mounted inside a fixed disk drive Most drives use more than one platter mounted on a single spindle shaft to provide more data storage surfaces in a small package The platter...

Страница 95: ...that is stored in that section Hard disks most often have sectors that are 512 data bytes long plus several bytes overhead for error correcting codes Each sector is preceded by ID data known as a hea...

Страница 96: ...d seeks U UNFORMATTED CAPACITY The total number of bytes of data that could be fit onto a disk Formatting the disk requires some of this space to record location boundary definitions and timing inform...

Страница 97: ...3 cooling fan requirements 1 12 crash stops 1 4 cross checking XC 1 13 daisy chain 1 3 daisy chained 1 6 Data Synchronizer 1 9 Data transfer operations 1 8 DATA TRANSFER RATE 1 3 Data transfer Rates 1...

Страница 98: ...14 Motor Controller 1 8 mounting 1 10 mounting dimensions 1 10 mounting holes 1 10 mounting screw clearance 1 11 mounting screws 1 11 MS DOS 1 19 MTBF 1 10 noise 1 5 Nominal conditions 1 4 Non repeat...

Страница 99: ...ing to disk 6 13 shipping container 1 2 SHOCK 1 9 Slave Present 1 7 slave present SP jumper 1 7 Specifications 1 9 sputtered thin film coating 1 3 supply voltages 1 4 syndrome values 1 14 tampering wi...

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