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Fujitsu MHA2032AT, MHA2021AT manual Read/write circuit block diagram

Models: MHA2032AT MHA2021AT

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Specification Install Interface signals Error Rate Rotational delay Dimension Device Configuration Power-on and reset Diagnostic code Command block registers

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4.6 Read/write Circuit

Figure 4.4 Read/write circuit block diagram

C141-E042-01EN

4-11

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Fujitsu MHA2032AT, MHA2021AT manual Read/write circuit block diagram

Page 50 Page 52

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Contents

Disk Drives Product Manual MHA2021AT, MHA2032AT Handling of This Manual For Safe Operation Revision History Overview of Manual Preface Conventions for Alert Messages Operating EnvironmentAbbreviation Liability Exception Important Alert Messages Important Alert Items Contents Contents Interface GL-1 AB-1IN-1 Figures Illustrations Tables C141-E042-01EN Xiii Device Overview Interface FeaturesFunctions and performance Adaptability Features MHA2021AT MHA2032AT Device SpecificationsSpecifications summary Specifications Model names and product numbers Power RequirementsModel and product number MHA2021AT Current fluctuation Typ. at +5V when power is turned on Current and power dissipation Acoustic Noise Environmental SpecificationsEnvironmental specifications Acoustic noise specification MTBF= Shock and vibration specificationShock and Vibration Reliability Media Defects Error Rate Device Configuration Disk drive outerview Device Configuration MHA2021ATMHA2032AT System Configuration ATA interface2 1 drive connection 3 2 drives connection 2 drives configuration Installation Conditions Dimensions Dimensions Orientation Mounting Mounting frame structure PCA Measurement point Temperature DE cover Service area Cable Connections Device connector Berg Cable connector specificationsCable connector specifications Device connection Jumper Settings Power supply connector CN1Location of setting jumpers Master drive-slave drive setting Factory default setting 13 Example 1 of Cable Select Csel setting 14 Example 2 of Cable Select Theory of Device Operation Head OutlineSubassemblies Disk Spindle ActuatorAir filter Circuit Configuration Circuit Configuration Power-on Sequence Self-calibration Self-calibration contents Execution timing of self-calibration Read/write preamplifier PreAMP Command processing during self-calibrationSelf-calibration execution timechart Read/write Circuit Write precompensation algorithm Write circuit Read/write circuit block diagram Read circuit Frequency characteristic of programmable filter Write clock freqeuncy and recording density BPI of each zone Time base generator circuit Servo control circuit Servo Control Servo Control Physical sector servo configuration on disk surface Servo Control Servo frame format Data-surface servo format Actuator motor control Spindle motor control Servo Control Interface Interface signals Signal assignment on the connectorPhysical Interface Signal assignment on the interface connector Dasp GNDEncsel MSTR, I, Master/slave setting Dasp Pidag 1 I/O registers Logical Interface DA2 DA1 DA0 I/O registers Icrc UNC Command block registers Logical Interface DEV HS3 HS2 HS1 HS0 BSY DSC DRQERR Interface Host Commands Control block registersSrst Command code and parameters 1 Command code and parameters Command code and parameters 2 Command descriptions Host Commands Read Multiple X’C4’ MSB Host Commands Execution example of Read Multiple command Host Commands Interface Host Commands 1F7 HCM 1F6 HDH Start head No. /LBA Write Multiple X’C5’ Start head No. /LBA Write Verify X’3C’ Interface Host Commands Initialize Device Parameters X’91’ Identify Device X’EC’ Information to be read by Identify Device command 1 Word Value Description Information to be read by Identify Device Command 2 Host Commands Information to be read by Identify Device Command 3 Identify Device DMA X’EE’ Features register values and settable modes SET Features X’EF’ Host Commands SET Multiple Mode X’C6’ Host Commands Execute Device Diagnostic X’90’ Diagnostic code Interface Host Commands Write Buffer X’E8’ Host Commands ’97’ or X’E3’ ’95’ or X’E1’ ’96’ or X’E2’ At command issuance I/O registers setting contents 1F7 HCM ’FF’ ’98’ or X’E5’ Features Register values subcommands and functions Smart Return Status 1FF Format of device attribute value data Format of insurance failure threshold value data Interface 10 Contents of security password Interface Host Commands Interface ∙ Read Sectors ∙ Write Sectors ∙ Write Vetif 11 Contents of Security SET Password data Cancel Locked Mode Interface 13 Command code and parameters 1 Error posting 13 Command code and parameters 2 Command Protocol Data transferring commands from device to hostExecute Device Diagnostic Initialize Device Parameters Read Sectors command protocol Protocol for command abort Data transferring commands from host to device Write Sectors command protocol Protocol for the command execution without data transfer Commands without data transfer Read DMA Write DMA Other commandsDMA data transfer commands Read Multiple Sleep Write Multiple Normal DMA data transfer PIO data transfer Timing Data transfer timing Single word DMA data transfer Single word DMA data transfer timing mode Multiword DMA data transfer Power-on and reset 11 Power on Reset Timing Operations Response to power-on Device Response to the Reset Response to power-on Response to hardware reset Response to hardware reset Response to software reset Response to software reset Response to diagnostic command Response to diagnostic command Default parameters Default parametersAddress Translation Logical address Address translation example in CHS mode Power save mode Power Save Operations Defect Management Power commands Alternating defective sectors Spare area Alternate cylinder assignment Data buffer configuration Read-Ahead CacheCaching operation Read Sector S Read Multiple Read DMA − Write Sectors − Write DMA − Write Multiple− Read Sector S − Read DMA Usage of read segment Following shows the cache enabled data for next read command DAP HAP Read-ahead data New read-ahead data Hit data Finally, the cache data in the buffer is as follows Last LBA Write Cache Write Cache Glossary Positioning Power save modeRotational delay PIO Programmed input-output VCM Status Acronyms and Abbreviations Index Index Initialize Device Parameters Index SET Features IN-6 C141-E042-01EN Comment Form MHA2021AT, MHA2032AT Disk Drives Product ManualJapan C141-E042-01EN

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