Fujitsu MHZ2250BJ Manuel d'utilisateur Page 271
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- Table des matières
- MARQUE LIVRES
Noté. / 5. Basé sur avis des utilisateurs
6.2 Power Save
• Upon receipt of a COMRESET
• Upon receipt of Idle/Idle Intermediate
(4) Standby mode
In this mode, the spindle motor has stopped from the low power idle state.
The device can receive commands through the interface. However if a command
with disk access is issued, response time to the command under the standby mode
takes longer than the active, active idle, or low power idle mode because the
access to the disk medium cannot be made immediately.
The drive enters the standby mode under the following conditions:
• A STANDBY or STANDBY IMMEDIATE command is issued.
• A certain amount of time has elapsed in the low power idle state.
(APM Mode 2)
• The time specified by the STANDBY or IDLE command has elapsed after
completion of the command.
• A reset is issued in the sleep mode.
When one of following commands is issued, the command is executed normally
and the device is still stayed in the standby mode.
• Reset (hardware or software)
• STANDBY command
• STANDBY IMMEDIATE command
• INITIALIZE DEVICE PARAMETERS command
• CHECK POWER MODE command
(5) Sleep mode
Sleep mode is the minimal of power consumption. The only method that returns
from Sleep mode is to execute Software Reset (SRST) or COMRESET. The
device enters to Standby mode after it returns from Sleep mode.
The drive enters the sleep mode under the following condition:
• A SLEEP command is issued.
In this mode, the device does not accept the command. (It is ignored.)
C141-E280 6-9
- FOR SAFE OPERATION 2
- Revision History 3
- Preface 5
- Operating Environment 6
- Conventions 7
- Attention 7
- Liability Exception 7
- Hot Plug 8
- 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 27
- 1.3 Power Requirements 30
- 1.5 Acoustic Noise 34
- 1.6 Shock and Vibration 34
- 1.7 Reliability 35
- (2) Positioning error 36
- 2.1 Device Configuration 42
- 2.2 System Configuration 43
- This page is intentionally 44
- blank 44
- 3.1 Dimensions 46
- 3.2 Mounting 47
- Mounting screw hole 51
- Cable connection 51
- 3.3.1 Device connector 53
- Installation Conditions 54
- 3-10 C141-E280 54
- 4.1 Outline 58
- 4.2 Subassemblies 58
- 4.3 Circuit Configuration 59
- 4.4 Power-on Sequence 62
- Power-on 63
- 4.5 Self-calibration 64
- 4.6 Read/write Circuit 66
- 4.6.3 Read circuit 67
- 4.6.4 Digital PLL circuit 67
- 4.7 Servo Control 68
- Diameter 71
- 4.7.3 Servo frame format 72
- 4.7.5 Spindle motor control 74
- CHAPTER 5 Interface 75
- 5.1 Physical Interface 76
- COMRESET/COMINIT 78
- 106.7 ns 78
- 106.7 ns 106.7 ns 78
- 5.1.4 Connector pinouts 81
- 5.1.5 P11 function 82
- 5.1.6 Hot Plug 84
- 5.2 Logical Interface 85
- 5.2.1 Communication layers 86
- 5.3 Host Commands 101
- Interface 102
- 5-28 C141-E280 102
- 5.3.2 Command descriptions 104
- SN Sector count (15-8) 117
- FR Field = 03 (Mode3) 118
- 5-90 C141-E280 164
- 5.3 Host Commands 165
- Bit 0: Reserved 185
- Setup FIS 185
- → Low Power Idle 197
- → Low Power Idle → Standby 197
- 01h (*1) 198
- • SET MAX ADDRESS 212
- • Description 218
- Sector offset (7-0) 223
- • SCT WRITE DATA (SN = E1h) 237
- Table 5.43 Operation mode 240
- 5.3.3 Error posting 247
- 5.4 Command Protocol 249
- 5.4 Command Protocol 251
- PIO Setup 253
- 5-186 C141-E280 260
- C141-E280 5-187 261
- 5-188 C141-E280 262
- CHAPTER 6 Operations 263
- 6.1 Reset and Diagnosis 264
- earlier than the host) 265
- C141-E280 6-3 265
- 6.1.2 Response to COMRESET 266
- • Security mode state 267
- • SECURITY FREEZE LOCK 267
- • SECURITY UNLOCK 267
- 6.2 Power Save 270
- 6.2.2 Power commands 272
- 6.4 Read-ahead Cache 275
- 6.4.2 Caching operation 276
- 279
- Cache valid data 281
- START LBA 281
- LAST LBA 281
- 6.5 Write Cache 282
- IMPORTANT 283
- 7.1 Maintenance 286
- 7.1.3 Maintenance levels 289
- Disk drive 290
- Firmware 290
- A2 Revision 291
- A3 Revision 291
- 7.1.6 Self-diagnostics 292
- 7.1.7 Test 292
- Figure 7.3 Test flowchart 293
- C141-E280 7-9 293
- 7.2 Operation Confirmation 295
- 7.5 Spare Disk Drive 299
- Glossary 301
- Acronyms and Abbreviations 305
- Comment Form 315
- C141-E280-01EN 317
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