Fujitsu MHT2060AT User Manual Page 17
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Contents
C141-E192-01EN xiii
6.2 Power Save.............................................................................................. 6-7
6.2.1 Power save mode .................................................................................. 6-7
6.2.2 Power commands.................................................................................. 6-9
6.3 Defect Processing ................................................................................... 6-9
6.3.1 Spare area.............................................................................................. 6-9
6.3.2 Alternating processing for defective sectors ...................................... 6-10
6.4 Read-ahead Cache................................................................................. 6-12
6.4.1 DATA buffer structure ....................................................................... 6-12
6.4.2 Caching operation............................................................................... 6-13
6.4.3 Using the read segment buffer............................................................ 6-15
6.4.3.1 Miss-hit............................................................................................. 6-15
6.4.3.2 Sequential Hit ................................................................................... 6-16
6.4.3.3 Full hit............................................................................................... 6-17
6.4.3.4 Partial hit........................................................................................... 6-18
6.5 Write Cache .......................................................................................... 6-19
6.5.1 Cache operation .................................................................................. 6-19
Glossary............................................................................................................GL-1
Acronyms and Abbreviations ........................................................................ AB-1
Index ..................................................................................................................IN-1
- MHT2030AT, MHT2020AT 1
- DISK DRIVES 1
- PRODUCT MANUAL 1
- FOR SAFE OPERATION 2
- Revision History 3
- Overview of Manual 5
- Operating Environment 6
- Conventions 6
- Attention 7
- Liability Exception 7
- Important Alert Items 9
- Manual Organization 11
- Contents 13
- Illustrations 18
- CHAPTER 1 Device Overview 21
- 1.1 Features 22
- 1.1.3 Interface 23
- 1.2 Device Specifications 24
- 1.3 Power Requirements 25
- 1.5 Acoustic Noise 29
- 1.6 Shock and Vibration 29
- 1.7 Reliability 30
- 1.8 Error Rate 31
- 1.9 Media Defects 31
- 1.10Load/Unload Function 31
- 1.11Advanced Power Management 32
- C141-E192-01EN 2-1 35
- 2.1 Device Configuration 35
- 2.2 System Configuration 35
- 2.2.3 2 drives connection 38
- 3.1 Dimensions 40
- 3.2 Mounting 41
- Installation Conditions 46
- 3-8 C141-E192-01EN 46
- Figure 3.7 Handling cautions 46
- 3.3 Cable Connections 47
- 3.3.3 Device connection 48
- 3.4 Jumper Settings 49
- 3.4.2 Factory default setting 50
- 3.4.4 CSEL setting 51
- 3-14 C141-E192-01EN 52
- 4.1 Outline 54
- 4.2 Subassemblies 54
- 4.3 Circuit Configuration 55
- 4.3 Circuit Configuration 57
- C141-E192-01EN 4-5 57
- 4.4 Power-on Sequence 58
- 4.5 Self-calibration 59
- 4.6 Read/write Circuit 61
- Theory of Device Operation 62
- 4-10 C141-E192-01EN 62
- 4.6.3 Read circuit 63
- 4.6.4 Digital PLL circuit 64
- 4.7 Servo Control 65
- 4.7.3 Servo frame format 70
- 4.7.4 Actuator motor control 71
- 4.7.5 Spindle motor control 72
- CHAPTER 5 Interface 75
- 5.1 Physical Interface 76
- 5.2 Logical Interface 80
- 5.2.1 I/O registers 81
- 5.2.2 Command block registers 82
- 5.2.3 Control block registers 87
- 5.3 Host Commands 88
- 5.3.2 Command descriptions 92
- Password information 125
- (CM) 11110100 133
- Description Initial 155
- 5.3.3 Error posting 181
- Interface 182
- 5-108 C141-E192-01EN 182
- 5.4 Command Protocol 183
- IMPORTANT 184
- 5.4.4 Other commands 189
- 5.4 Command Protocol 191
- C141-E192-01EN 5-117 191
- 5.5 Ultra DMA Feature Set 192
- 5.5.2 Phases of operation 193
- 5.5.5 Ultra DMA CRC rules 202
- 5.6 Timing 204
- 5.6.2 Multiword data transfer 205
- 5.6.3 Ultra DMA data transfer 206
- (host) 218
- DA0, DA1, DA2 218
- CS0-, CS1 218
- 5.6.4 Power-on and reset 219
- CHAPTER 6 Operations 221
- 6.1.1 Response to power-on 222
- 6.2 Power Save 227
- 6.3 Defect Processing 229
- Sector (physical) 230
- Cylinder 0 230
- (Not used) 230
- 6.4 Read-ahead Cache 232
- 6.4.2 Caching operation 233
- 6.5 Write Cache 239
- Glossary 243
- Acronyms and Abbreviations 247
- Comment Form 251
- DISK DRIVES PRODUCT MANUAL 253
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