Fujitsu MHZ2250BJ Manuel d'utilisateur Page 106
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Noté. / 5. Basé sur avis des utilisateurs
Interface
(2) READ SECTOR(S) (X '20' or X '21')
This command reads data of sectors specified in the Sector Count field from the
address specified in the Device/Head, Cylinder High, Cylinder Low and Sector
Number fields. Number of sectors can be specified from 1 to 256 sectors. To
specify 256 sectors reading, '00' is specified. For the protocols related to data
transfer, see Subsection 5.4.1.
If the head is not on the track specified by the host, the device performs an implied
seek. After the head reaches to the specified track, the device reads the target
sector.
If an error occurs, retry reads are attempted to read the target sector before
reporting an error, irrespective of the R bit setting.
If an error does not occur, PIO Setup is always transferred prior to the data
transfer.
Upon the completion of the command execution, shadow block registers contain
the cylinder, head, and sector addresses (in the CHS mode) or logical block
address (in the LBA mode) of the last sector read.
If an unrecoverable disk read error occurs in a sector, the read operation is terminated
at the sector where the error occurred. Shadow block registers contain the cylinder,
the head, and the sector addresses of the sector (in the CHS mode) or the logical
block address (in the LBA mode) where the error occurred, and remaining number
of sectors of which data was not transferred (including sector when the error
occurred).
• Error reporting conditions
(1) A specified address exceeds the range where read operations are allowed
(ST = 51h, ER = 10h).
(2) The range where read operations are allowed will be exceeded by an address
during a read operation (ST = 51h, ER = 10h).
(3) An uncorrectable disk read error occurred (ST = 51h, ER = 40h).
(4) The sync byte indicating the beginning of a sector was not found
(ST = 51h, ER = 01h).
(5) A communication error occurred (ST = 51h, ER = 0Ch).
(6) An error other than the above errors occurred (ST = 51h, ER = 04h).
5-32 C141-E280
- 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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