Fujitsu MHW2040AC User Manual Page 6
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Preface
Conventions for Alert Messages
This manual uses the following conventions to show the alert messages. An alert
message consists of an alert signal and alert statements. The alert signal consists
of an alert symbol and a signal word or just a signal word.
The following are the alert signals and their meanings:
This indicates a hazardous 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 the indented message.
A wider line space precedes and follows the alert message to show where the alert
message begins and ends. The following is an example:
(Example)
Data corruption: 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.
The main alert messages in the text are also listed in the “Important Alert Items.”
Operating Environment
This product is designed considering its application in car navigation systems.
Conventions
An MHW series device is sometimes simply referred to as a "hard disk drive,"
"HDD," "drive," or "device" in this document.
Decimal numbers are represented normally.
Hexadecimal numbers are represented as shown in the following examples:
X'17B9', 17B9h, 17B9
H
, or 17B9H.
Binary numbers are represented as shown in the following examples: 010 or 010b.
ii C141-E258
- MHW2060AC, MHW2040AC 1
- DISK DRIVES 1
- PRODUCT MANUAL 1
- FOR SAFE OPERATION 2
- Revision History 3
- Preface 5
- Operating Environment 6
- Conventions 6
- Attention 7
- Liability Exception 7
- Important Alert Items 9
- Manual Organization 11
- Contents 13
- Illustrations 19
- CHAPTER 1 Device Overview 23
- 1.1 Features 24
- 1.1.3 Interface 25
- 1.2 Device Specifications 26
- 1.3 Power Requirements 29
- 1.5 Acoustic Noise 33
- 1.6 Shock and Vibration 33
- 1.7 Reliability 34
- 1.8 Error Rate 35
- 1.9 Media Defects 35
- 1.10 Load/Unload Function 35
- 2.1 Device Configuration 40
- 2.2 System Configuration 41
- 2.2.3 2 drives connection 42
- 3.1 Dimensions 44
- 3.2 Mounting 45
- Connector 50
- 3.3.3 Device connection 51
- 3.4 Jumper Settings 52
- 3.4.4 CSEL setting 54
- 4.1 Outline 58
- 4.2 Subassemblies 58
- 4.3 Circuit Configuration 59
- C141-E258 4-5 61
- 4.4 Power-on Sequence 62
- 4.5 Self-calibration 63
- 4.6 Read/write Circuit 65
- 4.6.3 Read circuit 66
- 4.6.4 Digital PLL circuit 67
- 4.7 Servo Control 68
- Theory of Device Operation 72
- 4-16 C141-E258 72
- 4.7.3 Servo frame format 73
- 4.7.5 Spindle motor control 75
- CHAPTER 5 Interface 77
- 5.1 Physical Interface 78
- 5.2 Logical Interface 82
- 5.2.1 I/O registers 83
- 5.3 Host Commands 90
- 5.3.2 Command descriptions 94
- • Default function 110
- • Unload Feature: 110
- • Attribute ID 123
- • Raw attribute value 124
- • Status Flag 124
- • Current attribute value 124
- • Error logging capability 127
- • Check sum 127
- • SMART error logging 128
- • Command data structure 130
- • Error data structure 130
- • Status 130
- • SMART self-test 131
- • Self-test number 131
- • Self-test index 131
- • Test span 132
- • Current LBA under test 132
- • Current span under test 132
- • Feature Flags 133
- (CM) 1 1 1 0 0 1 0 0 149
- • SET MAX ADDRESS 180
- Password information 182
- • SET MAX SET PASSWORD 184
- • SET MAX LOCK 184
- • SET MAX UNLOCK 184
- • Description 186
- 5.3.3 Error posting 203
- Interface 204
- 5-128 C141-E258 204
- 5.4 Command Protocol 205
- (*) Transfers dummy data 207
- 5.4.4 Other commands 211
- 5.5 Ultra DMA Feature Set 213
- 5.5.2 Phases of operation 214
- 5.5.5 Ultra DMA CRC rules 223
- 5.6 Timing 225
- 5.6.4 Power-on and reset 240
- CHAPTER 6 Operations 241
- 6.1.1 Response to power-on 242
- 6.2 Power Save 247
- 6.3 Defect Processing 249
- Sector (physical) 250
- Cylinder 0 250
- (Not used) 250
- 779 780 251
- 6.4 Read-ahead Cache 252
- For MPU work For R/W command 252
- 8,388,608 bytes 252
- 6.4.2 Caching operation 253
- 256
- 6.5 Write Cache 258
- Glossary 261
- Acronyms and Abbreviations 265
- Comment Form 273
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