Seagate Ultra160 Manuals

Manuals and User Guides for Seagate Ultra160. We have 1 Seagate Ultra160 manual available for free PDF download: Product Manual

Seagate Ultra160 Product Manual

Seagate Ultra160 Product Manual (384 pages)

SCSI Interface

Brand: Seagate | Category: Storage | Size: 6.44 MB

Table of Contents

Table of Contents
7
List of Figures
17
1 Interface Requirements

19
- How to Use this Interface Manual
  19
- General Interface Description
  20
  - Glossary
    21
  - Figure 2. SCSI Client-Server Model
    21
  - Keywords
    27
- Physical Interface Characteristics
  28
- Summary of SCSI Commands and Messages
  29
2 SCSI Bus

31
- SCSI Bus Signals Overview
  32
  - Drive Select
    34
  - Signal Values
    34
- Signal States
  34
  - SE Signals
    34
  - LVD Signals
    34
- OR-Tied Signals
  35
- Signal Sources
  35
- Figure 3. Voltage and Current Definitions
  35
- Figure 4. LVD Signaling Sense
  35
- SCSI Bus Timing
  37
  - Arbitration Delay
    41
  - ATN Transmit Setup Time
    41
  - ATN Receive Setup Time
    41
  - Bus Clear Delay
    41
  - Bus Free Delay
    41
  - Bus Set Delay
    41
  - Bus Settle Delay
    41
  - Cable Skew Delay
    42
  - Chip Noise in Receiver
    42
  - Clock Jitter
    42
  - De-Skewed Data Valid Window
    42
  - Flow Control Receive Hold Time
    42
  - Flow Control Receive Setup Time
    42
  - Flow Control Transmit Hold Time
    42
  - Flow Control Transmit Setup Time
    42
  - Pcrc Receive Hold Time
    42
  - Pcrc Receive Setup Time
    42
  - Pcrc Transmit Hold Time
    43
  - Pcrc Transmit Setup Time
    43
  - Data Release Delay
    43
  - DIFFSENS Voltage Filter Time
    43
  - Physical Disconnection Delay
    43
  - Power on to Selection
    43
  - QAS Arbitration Delay
    43
  - QAS Assertion Delay
    43
  - QAS Release Delay
    43
  - QAS Non-Data Phase REQ(ACK) Period
    43
  - Receive Internal Hold Time
    44
  - Receive Internal Setup Time
    44
  - Receive Negation Period
    44
  - Receive Setup Time
    44
  - Receive REQ(ACK) Period Tolerance
    44
  - Receive REQ Assertion Period with P_CRCA Transitioning
    44
  - Receive REQ Negation Period with P_CRCA Transitioning
    44
- Receive Skew Compensation
  44
- Receiver Amplitude Time Skew
  44
- REQ(ACK) Period
  44
- Reset Delay
  45
- Reset Hold Time
  45
- Reset to Selection
  45
- Residual Skew Error
  45
- Selection Abort Time
  45
- Selection Timeout Delay
  45
- Signal Timing Skew
  45
- Skew Correction Range
  45
- Strobe Offset Tolerance
  45
- System Deskew Delay
  46
- System Noise at Launch
  46
- System Noise at Receiver
  46
- Time Asymmetry
  46
- Transmit Assertion Period
  46
- Transmit Hold Time
  46
- Transmit ISI Compensation
  46
- Transmit Negation Period
  46
- Transmit Setup Time
  46
- Transmit REQ(ACK) Period Tolerance
  46
- Transmit REQ Negation Period with P_CRCA Transitioning
  47
- Transmitter Skew
  47
- Transmitter Time Asymmetry
  47
- Measurement Points
  47
- Clocking Methods for Data Transfers
  47
- Figure 5. ST Latching Data Vs. DT Latching Data
  49
- Figure 6. ST Synchronous Transfer Example
  49
- Paced Transfer on a SCSI Bus
  50
- Figure 7. DT Synchronous Transfer Example
  50
- Figure 8. Paced Transfer Example
  50
- Data Transfer Modes
  51
  - Asynchronous Transfers
    51
  - Synchronous Transfers
    51
  - Paced Transfers
    51
- ST DATA Phase Parallel Transfers
  51
- DT DATA Phase Parallel Transfers
  51
- Negotiation
  53
  - Negotiation Algorithm
    53
  - When to Negotiate
    53
  - Negotiable Fields
    54
  - Transfer Agreements
    55
  - Transfer Period Factor
    56
  - REQ/ACK Offset
    56
  - Transfer Width Exponent
    57
  - Protocol Options
    58
    
    Iu_Req
    58
    
    Dt_Req
    59
    
    Hold_Mcs
    59
    
    Qas_Req
    59
    
    Pcomp_En
    60
    
    Rd_Strm
    60
    
    RTI (Retain Training Information)
    60
    
    Wr_Flow
    60
  - Negotiable Field Combinations
    61
    
    Message Restrictions
    61
    
    Negotiation Message Sequences
    62
3 Logical Characteristics

63
4 Message System Specification

93
- General Message Protocols and Formats
  93
- Message Formats
  93
  - One-Byte Messages
    94
  - Two-Byte Messages
    94
  - Extended Messages
    94
- Message Categories
  94
  - Link Control Messages
    95
  - Disconnect
    96
  - Identify
    96
  - Ignore Wide Residue
    97
  - Initiator Detected Error
    97
  - Linked Command Complete
    98
  - Message Parity Error
    98
  - Message Reject
    98
  - Modify Data Pointer
    98
  - Modify Bidirectional Data Pointer
    99
  - No Operation
    99
  - Parallel Protocol Request
    100
    
    Parallel Protocol Request
    103
  - Qas Request
    104
  - Restore Pointers
    104
  - Save Data Pointers
    104
  - Synchronous Data Transfer Request
    104
    
    Initiator Initiated SDTR Negotiation
    106
    
    Target Initiated SDTR Negotiation
    106
  - Task Complete
    107
  - Wide Data Transfer Request
    107
    
    Target Initiated WDTR Negotiation
    108
    
    Initiator Initiated Wide Data Transfer Request (WDTR) Negotiation
    109
- Task Attribute Messages
  109
  - Task Attribute Message Overview and Codes
    109
  - Aca (Auto Contingent Allegiance)
    110
  - Head of Queue
    111
  - Ordered
    111
  - Simple
    111
- Task Management Messages
  112
  - Task Management Message Codes
    112
  - Abort Task
    112
  - Abort Task Set
    113
  - Clear Aca
    113
  - Clear Task Set
    113
  - Logical Unit Reset
    113
  - Target Reset
    113
5 Miscellaneous SCSI Bus Characteristics

115
- Attention Condition
  115
- Bus Reset Condition
  116
- Hard Reset
  116
- Reset Events
  116
  - Bus Reset Event
    116
  - Power on Reset Event
    116
  - Target Reset Event
    117
  - Transceiver Mode Change Reset Event
    117
- Asynchronous Condition Recovery
  117
6 SPI Information Units

121
7 SCSI Commands

135
- Command Implementation Requirements
  135
  - Reserved
    135
- Command Descriptor Block (CDB)
  135
  - Fixed and Variable Length Command Descriptor Block Formats
    136
- Status
  141
  - Status Precedence
    142
- Command Examples
  143
  - Single Command Example
    143
  - Figure 19. Single Command Example
    143
  - Disconnect Example
    144
  - Figure 20. Disconnect Example
    144
- Timing Examples
  145
- Command Processing Considerations and Exception Conditions
  145
  - Auto Contingent Allegiance or Contingent Allegiance
    145
    
    Logical Unit Response to Auto Contingent Allegiance or Contingent Allegiance
    145
    
    Clearing an Auto Contingent Allegiance Condition
    146
  - Overlapped Commands
    146
  - Incorrect Logical Unit Selection
    146
  - Sense Data
    147
    
    Asynchronous Event Reporting
    147
    
    Unexpected RESELECTION Phase
    148
  - Unit Attention Condition
    148
  - Target Hard Reset
    149
  - Logical Unit Reset
    149
  - Queued Tasks (Formerly "Queued I/O Processes")
    150
  - Untagged Task Queuing
    150
  - Tagged Task Queuing
    150
- Parameter Rounding
  151
- Programmable Operating Definition
  151
- Incorrect Initiator Connection
  152
8 Command Descriptions

153
- CHANGE DEFINITION Command (40H)
  157
- COMPARE Command (39H)
  158
- COPY Command (18H)
  158
- COPY and VERIFY Command (3Ah)
  158
- FORMAT UNIT Command (04H)
  159
  - FORMAT UNIT Parameter Definition
    160
  - FORMAT UNIT Parameter List
    162
    
    Defect List Header
    162
    
    Initialization Pattern Descriptor
    163
    
    Defect List Formats
    164
- INQUIRY Command (12H)
  166
  - Drive Standard INQUIRY Data
    168
  - SCSI Parallel Interface (SPI) Specific INQUIRY Data
    173
  - Vital Product Data
    173
  - Command Support Data
    174
  - Vital Product Data Parameters
    176
    
    ASCII Implemented Operating Definition Page
    176
    
    ASCII Information Page
    177
    
    Device Identification Page
    178
    
    Supported Vital Product Data
    181
    
    Unit Serial Number Page
    182
  - Firmware Numbers Page (C0H)
    182
  - Date Code Page (C1H)
    185
  - Jumper Settings Page (C2H)
    186
  - Device Behavior Page (C3H)
    188
- LOCK-UNLOCK CACHE Command (36H)
  188
- LOG SELECT Command (4Ch)
  189
- LOG SENSE Command (4Dh)
  191
  - Application Client Page (0Fh)
    197
  - Buffer Over-Run/Under-Run Page (01H)
    198
  - Cache Statistics Page (37H)
    199
  - Error Counter
    200
    
    04H, and 05H)
    200
  - Factory Log Page (3Eh)
    201
  - Last N Deferred Errors or Asynchronous Events Page (0Bh)
    201
  - Last N Error Events Page (07H)
    201
  - Non-Medium Error Page (06H)
    201
  - Self-Test Results Log Page (10H)
    201
  - Start-Stop Cycle Counter Page (0Eh)
    204
  - Supported Log Pages (00H)
    206
  - Temperature Page (0Dh)
    207
- MODE SELECT (6) Command (15H)
  209
  - MODE SELECT Parameter List
    209
  - Mode Select
    212
- MODE SELECT (10) Command (55H)
  213
  - MODE SELECT (10) Parameter List
    213
- MODE SENSE (6) Command (1Ah)
  216
  - MODE SENSE Page Descriptor Header
    219
  - REUNIT ATTENTION Parameters Page (00H)
    220
  - Error Recovery Page (01H)
    222
  - Disconnect/Reconnect Control Page (02H)
    225
  - Format Parameters Page (03H)
    228
  - Rigid Drive Geometry Parameters Page (04H)
    230
  - Verify Error Recovery Page (07H)
    232
  - Caching Parameters Page (08H)
    234
  - Control Mode Page (0Ah)
    237
  - Notch Page (0Ch)
    240
  - Power Condition Page (0Dh or 1Ah)
    242
  - Xor Control Mode Page (10H)
    243
  - Port Control Mode Page (19H)
    245
    
    Margin Control Subpage
    246
    
    Saved Training Configuration Values Subpage
    248
    
    Negotiated Settings Subpage
    249
    
    Report Transfer Capabilities Subpage
    249
  - Informational Exceptions Control Page (1Ch)
    251
- MODE SENSE (10) Command (5Ah)
  254
- MOVE MEDIUM Command (A7H)
  257
- PERSISTENT RESERVE in Command (5Eh)
  258
  - PERSISTENT RESERVE in Parameter Data for Read Keys
    259
  - PERSISTENT RESERVE in Parameter Data for Read Reservations
    260
- PERSISTENT RESERVE out Command (5Fh)
  263
  - PERSISTENT RESERVE out Parameter List
    264
- PREFETCH Command (34H)
  266
- PRVENT/ALLOW MEDIUM REMOVAL Command (1Eh)
  266
- Read Command (08H)
  267
- READ 10 Command (28H)
  269
- Read 12 Command (A8H)
  271
- READ 16 Command (28H)
  273
- READ BUFFER Command (3Ch)
  275
- READ CAPACITY Command (25H)
  278
- READ DEFECT DATA (10) Command (37H)
  280
- READ DEFECT DATA (12) Command (B7H)
  282
- READ ELEMENT STATUS Command (B4H)
  283
- READ EXTENDED Command
  284
- READ LONG Command (3Eh)
  284
- REASSIGN BLOCKS Command (07H)
  286
  - REASSIGN BLOCKS Defect List
    287
- REBUILD Command (81H)
  288
  - REBUILD and REGENERATE Parameter Data
    289
- RECEIVE DIAGNOSTIC RESULTS Command (1Ch)
  291
  - Supported Diagnostic
    293
  - Translate Address Page (40H)
    293
- REGENERATE Command (82H)
  295
- RELEASE (6) Command (17H)
  297
  - Logical Unit Release
    297
  - Extent Release
    297
  - Third Party Release
    297
- RELEASE (10) Command (57H)
  298
- REPORT DEVICE IDENTIFIER Command (A3)
  299
- REPORT LUNS Command (A0H)
  301
- REQUEST SENSE Command (03H)
  303
  - Sense Key Specific Field
    306
    
    Current Errors
    307
    
    Deferred Errors
    308
  - Sense Key and Sense Code Descriptions
    309
  - Additional Sense and Additional Sense Qualifier Codes
    310
- RESERVE (6) Command (16H)
  314
  - Logical Unit Reservation
    314
  - Extent Reservation
    314
  - Third Party Reservation
    315
  - Superseding Reservations
    315
  - Reservations
    315
- RESERVE (10) Command (56H)
  316
- REZERO UNIT Command (01H)
  317
- SEARCH DATA EQUAL Command (31H)
  317
- SEARCH DATA HIGH Command (30H)
  317
- SEARCH DATA LOW Command (32H)
  317
- SEEK Command (0Bh)
  318
- SEEK EXTENDED Command (2Bh)
  319
- SEND DIAGNOSTIC Command (1Dh)
  320
  - Supported Diagnostic Page-SEND DIAGNOSTIC
    322
  - Translate Address Page-SEND DIAGNOSTIC
    322
- SET DEVICE IDENTIFIER Command (A4H)
  324
- SET LIMITS Command (33H)
  325
- START/STOP UNIT Command (1Bh)
  326
- SYNCHRONIZE CACHE 10 Command (35H)
  327
- SYNCHRONIZE CACHE 16 Command (91H)
  328
- TEST UNIT READY Command (00H)
  329
- VERIFY Command (2Fh)
  330
- Write Command (0Ah)
  331
- WRITE 10 Command (2Ah)
  332
- WRITE and VERIFY Command (2Eh)
  334
- WRITE BUFFER Command (3Bh)
  335
- WRITE LONG Command (3Fh)
  339
- WRITE same Command (41H)
  340
- XDREAD Command (52H)
  341
  - Xor Commands
    341
- XDWRITE Command (50H)
  343
- XDWRITE EXTENDED Command (80H)
  344
- XPWRITE Command (51H)
  346
9 Drive Features

347

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