Hitachi IC35L060AVV207 Datasheet Page 105
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9.14 Automatic Acoustic Management feature set (AAM)
This feature set allows the host to select an acoustic management level. The acoustic management level
may range from the lowest acoustic emanation setting of 01h to the maximum performance level of FEh.
Device performance and acoustic emanation may increase with increasing acoustic management levels.
The acoustic management levels may contain discrete bands. Automatic Acoustic Management levels
80h and higher do not permit the device to enter Standby mode as a result of the Automatic Acoustic
Management algorithm. The Automatic Acoustic Management feature set uses the following functions:
1. A SET FEATURES subcommand to enable Automatic Acoustic Management
2. A SET FEATURES subcommand to disable Automatic Acoustic Management
Advanced Power Management, Automatic Acoustic Management, and the Standby timer setting are
independent functions. The device shall enter Standby mode if any of the following are true:
1. The Standby timer has been set and times out.
2. Automatic Power Management is enabled and the associated algorithm indicates that the Standby
mode should be entered to save power.
3. Automatic Acoustic Management is enabled and the associated algorithm indicates that the
Standby mode should be entered to reduce acoustical emanations.
The IDENTIFY DEVICE response word 83, bit 9 indicates that Automatic Acoustic Management feature is
supported if set. Word 86, bit 9 indicates that Automatic Acoustic Management is enabled if set. Word 94,
bits 7-0s contains the current Automatic Acoustic Management level if Automatic Acoustic Management
is enabled, and bits 8-15 contain the Vendor's recommended AAM level.
9.15 Address Offset Feature
Computer systems perform initial code loading (booting) by reading from a predefined address on a drive.
To allow an alternate bootable operating system to exist in a system reserved area on a drive, this feature
provides a Set Features function to temporarily offset the drive address space. The offset address space
wraps around so that the entire drive address space remains addressable in offset mode. Max LBA in
offset mode is set to the end of the system reserved area to protect the data in the user area when
operating in offset mode. The Max LBA can be changed by a Set Max Address command to access the
user area. If the native MAX LBA is set, the whole user area can be accessed. But any commands which
access sectors across the original native maximum LBA are rejected with error, even if this protection is
removed by an Set Max Address command.
9.15.1 Enable/Disable Address Offset Mode
The Set Features subcommand code 09h Enable Address Offset Mode offsets address Cylinder 0,
Head 0, Sector 1, LBA 0, to the start of the nonvolatile protected area established using the Set Max
Address command. The offset condition is cleared by Subcommand 89h Disable Address Offset Mode,
Hardware reset, or Power on Reset. If Reverting to Power on Defaults has been enabled by Set Features
command, it is cleared by Soft reset as well. Upon entering offset mode the capacity of the drive returned
in the Identify Device data is the size of the former protected area. A subsequent Set Max Address com-
mand with the address returned by Read Max Address command allows access to the entire drive.
Addresses wrap so the entire drive remains addressable.
If a nonvolatile protected area has not been established before the device receives a Set Features
Enable Address Offset Mode command, the command fails with Abort error status.
Disable Address Offset Feature removes the address offset and sets the size of the drive reported by the
Identify Device command back to the size specified in the last nonvolatile Set Max Address command.
Deskstar 180GXP hard disk drive specifications
91
- Deskstar 180 GXP 1
- Table of contents 5
- List of figures 11
- 1.0 General 15
- 2.0 General features 17
- 3.1 Control Electronics 21
- 3.2 Head disk assembly 21
- 3.3 Actuator 21
- 4.0 Drive characteristics 23
- 4.2 Data sheet 24
- 4.3 Drive organization 25
- 4.4.1 Command overhead 26
- 4.4.2 Mechanical positioning 26
- Figure 7. Head switch time 27
- 4.4.3 Drive ready time 28
- 4.4.4 Data transfer speed 29
- 4.4.5 Throughput 30
- 4.4.6 Operating modes 30
- Operating mode descriptions 30
- 5.0 Defect flagging strategy 33
- 6.0 Specification 35
- 6.1.2 Signal definition 36
- 6.2 Signal timings 40
- 6.2.2 PIO timings 41
- 6.2.3 Multiword DMA timings 43
- 6.2.4 Ultra DMA timings 44
- HDMARDY– is negated 45
- 6.2.4.5 Initiating Write DMA 48
- DDMARDY– is negated 49
- 6.2.5 Addressing of registers 52
- 6.2.6 Cabling 52
- 6.3 Jumper settings 53
- 6.3.4.4 Power Up In Standby 58
- 6.4 Environment 59
- Nonoperating 60
- Operating 60
- 6.5 DC power requirements 61
- 6.6 Reliability 64
- 6.7 Mechanical specifications 65
- BREATHER HOLE 66
- 6.7.2 Hole locations 67
- 6.7.3Connector locations 68
- 6.7.4 Drive mounting 68
- 6.8 Vibration and shock 69
- 6.8.3 Operating shock 70
- 6.8.4 Nonoperating shock 70
- 6.9 Acoustics 71
- 6.10 Identification labels 72
- 6.11 Safety 73
- 6.12.1 CE Mark 74
- 6.12.2 C-Tick Mark 74
- 7.0 General 77
- Deviations from standard 77
- 8.0 Registers 79
- 8.2 Command Register 80
- 8.3 Cylinder High Register 80
- 8.4 Cylinder Low Register 80
- 8.5 Data Register 81
- 8.6 Device Control Register 81
- 8.7 Drive Address Register 81
- 8.8 Device/Head Register 82
- 8.9 Error Register 82
- 8.10 Features Register 83
- 8.11 Sector Count Register 83
- 8.12 Sector Number Register 83
- 8.13 Status Register 84
- 9.0 General operation 85
- 9.1.1 Register initialization 86
- 9.3 Sector Addressing Mode 88
- 9.5 Power management feature 90
- Figure 79. Power conditions 91
- 9.6 S.M.A.R.T. function 92
- 9.6.8 Self-test 93
- 9.7 Security Mode Feature Set 94
- 9.7.4 Operation example 95
- Figure 81. Usual Operation 96
- 9.7.4.4 User Password Lost 97
- 9.7.5 Command table 98
- 9.8.2 Security extensions 101
- 9.9 Seek Overlap 102
- 9.10 Write cache function 103
- 9.11 Reassign function 103
- 9.15 Address Offset Feature 105
- 9.15.2 Identify Device Data 106
- 10.0 Command Protocol 109
- 10.1 PIO Data In commands 110
- 10.2 PIO Data Out commands 112
- 10.3 Non-data commands 114
- 10.4 DMA commands 116
- 10.5 DMA queued commands 117
- 11.0 Command descriptions 119
- (subcommand C1h) 125
- 11.4 Flush Cache (E7h) 129
- 11.5 Flush Cache Ext (EAh) 130
- 11.6 Format Track (50h) 131
- 11.7 Format Unit (F7h) 133
- 11.8 Identify Device (ECh) 134
- 11.9 Idle (E3h/97h) 141
- 11.12 NOP (00h) 144
- 11.13 Read Buffer (E4h) 145
- 11.14 Read DMA (C8h/C9h) 146
- 11.15 Read DMA Ext (25h) 148
- Read DMA Ext Command (25h) 148
- 11.16 Read DMA Queued (C7h) 150
- 11.18 Read Log Ext (2Fh) 154
- BytesDescription 155
- 11.18.2.1 Error log version 156
- 11.18.2.2 Error log index 156
- 11.18.2.4 Device error count 158
- 11.19 Read Long (22h/23h) 161
- 11.20 Read Multiple (C4h) 163
- 11.21 Read Multiple Ext (29h) 165
- 11.28 Recalibrate (1xh) 177
- 11.34 Security Unlock (F2h) 185
- 11.35 Seek (7xh) 187
- 11.36 Service (A2h) 188
- 11.37 Set Features (EFh) 189
- 11.37.1 Set Transfer mode 190
- 11.37.2 Write Cache 190
- Software Resets 192
- 11.38 Set Max Address (F9h) 193
- Figure 151. Set Max Lock 196
- 11.40 Set Multiple (C6h) 201
- 11.41 Sleep (E6h/99h) 202
- 11.42.1 S.M.A.R.T. Subcommand 204
- ByteDescription 208
- 11.42.4 SMART Log Directory 213
- 11.42.5.2 Error log index 214
- 11.42.5.3 Device error count 214
- 11.42.7 Error reporting 218
- 11.43 Standby (E2h/96h) 219
- 11.45 Write Buffer (E8h) 222
- 11.46 Write DMA (CAh/CBh) 223
- 11.47 Write DMA Ext (35h) 225
- 11.50 Write Log Ext (3Fh) 231
- 11.51 Write Long (32h/33h) 233
- 11.52 Write Multiple (C5h) 235
- 12.0 Timings 243
- Addressing of registers, 38 245
- Technologies 247
- DeskstarTM is a trademark of 247
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