SEAGATE Ultra 320 - Manual

SEAGATE Ultra 320

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Table of Contents:

  • Page 3 – Parallel SCSI Interface
  • Page 4 – ©2006, Seagate Technology LLC All rights reserved
  • Page 5 – Revision status summary sheet; Revision
  • Page 7 – Parallel SCSI Interface Product Manual, Rev. A; Table of Contents
  • Page 13 – List of Figures
  • Page 15 – Interface requirements; How to use this interface manual; Unless required for clarity, “SCSI” is now used instead of “SCSI-3.”
  • Page 16 – Scope of SCSI standards; Functional scope of SCSI
  • Page 17 – Applicable standards; General interface description
  • Page 18 – SCSI client-server model
  • Page 19 – See
  • Page 26 – Message Name
  • Page 27 – Parallel SCSI Interface Product Manual, Rev. A ); SCSI bus
  • Page 28 – SCSI IDs and associated SCSI bus arbitration priorities
  • Page 29 – SCSI bus signals overview; Multimode—SE or LVD alternative
  • Page 30 – P_CRC signal usage requirements; DT Data phase
  • Page 31 – Drive select; Signal states; SE signals
  • Page 32 – DIFFERENTIAL B
  • Page 33 – Signal sources; SCSI bus phase
  • Page 34 – SCSI bus timing; SCSI bus control timing values in nanoseconds; This is a recommended time. It is not mandatory.
  • Page 35 – SCSI bus data and information phase ST timing values
  • Page 37 – Transmit SCSI bus data and information phase DT timing values; Timing description
  • Page 38 – Receive SCSI bus data and information phase DT timing values; Calculated assuming timing budget shown in Table 9.
  • Page 40 – Arbitration delay; Item; from table 6; Transmitter and receiver errors:; Cable skew; Crosstalk time shift; Time impact; ISI of data; Worse case pattern; Total interconnect budget
  • Page 47 – Measurement points
  • Page 48 – LVD measurement points; Clocking methods for data transfers
  • Page 50 – Paced transfer on a SCSI bus; transfer period = 25 ns
  • Page 51 – Data transfer modes; Asynchronous transfers; SCSI device ports default to 8-bit asynchronous transfers.; Synchronous transfers; Optional
  • Page 52 – ST DATA phase parallel transfers; Data group transfers; The value of the pad bytes within the pad field is vendor specific.; Information unit transfers; The value of the pad bytes is vendor-specific.
  • Page 53 – Negotiation; Negotiation algorithm
  • Page 54 – When to negotiate; Field name
  • Page 55 – Responding message requirements
  • Page 56 – Transfer agreements
  • Page 57 – Table abbreviations are defined as follows:; Transfer period factor
  • Page 58 – Value; Value; Obsolete
  • Page 59 – Protocol options; Table 18 lists the protocol options bits.; Protocol options bits; Name
  • Page 60 – Bus phases resulting from IU_REQ changes; or BUS FREE phase; a. PPR negotiation keeping IU_REQ set to one; BUS FREE phase
  • Page 62 – Negotiable field combinations
  • Page 63 – Message restrictions
  • Page 65 – Logical characteristics; SCSI bus phases overview; The drive responds to the following phases:
  • Page 66 – Expected bus free phases
  • Page 67 – Normal ARBITRATION phase; examine the Data Bus.
  • Page 68 – QAS protocol; to enter selection phase; QAS phase overview; then wait for ACK to be true.
  • Page 69 – SELECTION phase
  • Page 70 – Selection overview
  • Page 71 – Selection using attention condition timeout procedure
  • Page 72 – RESELECTION phase; RESELECTION phase overview
  • Page 73 – Physical reconnection timeout procedure; SCSI bus fairness
  • Page 74 – Information transfer phases; Signal
  • Page 75 – Asynchronous transfer
  • Page 76 – DT synchronous transfer; and
  • Page 78 – Data group data field transfer; P_CRCA signal for a minimum of a pCRC transmit hold time
  • Page 80 – Data group pad field and pCRC field transfer to SCSI target port
  • Page 82 – Paced transfer
  • Page 83 – DT DATA IN phase training pattern
  • Page 84 – Start of section C
  • Page 85 – P1 data valid/invalid state transitions
  • Page 86 – Starting pacing transfers at end of training pattern; X X X X X X O O O O O O O O O O X X X X X X X X X X X X O O O O O O X X X X O O O O O O; X X X X X X O O O O O O O O O O X X X X O O X X X X X X O O O O O O X X X X O O O O O O
  • Page 87 – Ending pacing transfers
  • Page 88 – Deskewing; All SCSI devices shall support 8-bit narrow data transfers.
  • Page 89 – Wide SCSI byte order; COMMAND phase; COMMAND phase description; DATA phase; DATA phase overview
  • Page 90 – STATUS phase
  • Page 91 – MESSAGE IN phase exception condition handling; code to Message Error or; Signal restrictions between phases
  • Page 92 – SCSI bus phase sequences; SCSI bus phase sequences overview
  • Page 95 – Data bus protection; Data bus protection overview; Action
  • Page 96 – DT data bus protection using CRC
  • Page 97 – Message system specification; General message protocols and formats
  • Page 98 – Message format; The EXTENDED MESSAGE LENGTH field
  • Page 99 – Extended Message Codes; in Paragraphs referenced in Table 27.; Message categories; LINK CONTROL MESSAGES
  • Page 101 – DISCONNECT; current task may be completed.; IDENTIFY
  • Page 102 – IGNORE WIDE RESIDUE; The NUMBER OF BYTES TO IGNORE; Ignore field definition; Bit; Reserved
  • Page 103 – INITIATOR DETECTED ERROR
  • Page 104 – MODIFY DATA POINTER message format; ARGUMENT
  • Page 105 – MODIFY BIDIRECTIONAL DATA POINTER message format
  • Page 106 – PARALLEL PROTOCOL REQUEST; Transfer period equals the period factor x 4.; Fast-5 data is latched using a transfer period of less than; TRANSFER PERIOD FACTOR
  • Page 107 – Asynch; FFh; Synchronous or paced transfers with unlimited offset.
  • Page 108 – Valid protocol options bit combinations; Description; Use ST DATA IN and ST DATA OUT phases to transfer data
  • Page 109 – Target’s Parallel Protocol
  • Page 110 – QAS REQUEST
  • Page 111 – SYNCHRONOUS DATA TRANSFER REQUEST; The TRANSFER PERIOD FACTOR field values are defined below.
  • Page 112 – SDTR messages implied agreements; Implied agreement
  • Page 113 – Target initiated SDTR negotiation
  • Page 114 – WIDE DATA TRANSFER REQUEST; TRANSFER WIDTH EXPONENT
  • Page 115 – WDTR message implied agreement; the target shall switch to a
  • Page 116 – Task attribute messages; field is an 8-bit unsigned integer; Task attribute message overview and codes
  • Page 117 – Out
  • Page 119 – Task management messages; Task management message codes
  • Page 120 – ABORT TASK SET
  • Page 121 – Miscellaneous SCSI bus characteristics; Attention condition
  • Page 122 – Bus reset condition
  • Page 123 – Reset events; Bus reset event; Asynchronous condition recovery; SCSI pointers; Of these three-pointer sets there are two types:
  • Page 124 – Active pointers
  • Page 125 – Command processing considerations and exception conditions; Asynchronous event notification
  • Page 126 – Unexpected RESELECTION phase
  • Page 127 – SPI information units; Information unit transfer logical operations
  • Page 129 – or
  • Page 130 – Attention
  • Page 132 – SPI command information unit
  • Page 134 – Indicates no task management requests for the current task.
  • Page 135 – SPI L_Q information unit
  • Page 139 – SPI data information unit; SPI data stream information unit; The SPI data stream information unit (see Table 53) contains data.; MSB
  • Page 141 – SPI status information unit; If a task completes with a Good status, a SNSVALID
  • Page 145 – SCSI commands; Command implementation requirements
  • Page 147 – Fixed and variable length Command Descriptor Block formats; See notes following Table 61.
  • Page 152 – Status; A description of the status byte codes is given below.
  • Page 153 – Intermediate–Condition Met.; mode page TAS bit is set to one.; Status precedence
  • Page 154 – Command examples; Single command example; Figure 19. Single command example
  • Page 155 – Disconnect example; Figure 20. Disconnect example
  • Page 156 – Timing examples; Auto Contingent Allegiance or Contingent Allegiance
  • Page 157 – Clearing an Auto Contingent Allegiance condition
  • Page 158 – Incorrect logical unit selection; The logical unit identifier may be incorrect because:; Sense data; The following clauses describe the last two transfer methods.; Asynchronous Event Reporting
  • Page 159 – Autosense
  • Page 160 – Unit Attention condition; could affect one or more of the other initiators).
  • Page 161 – Target hard reset; To execute a logical unit reset the logical unit shall:; Untagged task queuing
  • Page 162 – Tagged task queuing
  • Page 163 – Parameter rounding
  • Page 164 – Incorrect initiator connection; An incorrect initiator connection occurs on a reconnection if:
  • Page 165 – Drive features; The short and extended self-tests; The following are examples of segments:
  • Page 166 – Foreground mode; field in the log page. The Self-Test Results field shall be set to
  • Page 167 – Exception commands for background self-tests; tests, other than those listed above for all device types.; Elements common to foreground and background self-test modes; Command; WRITE BUFFER (with the mode set to any download microcode option; Direct access; FORMAT UNIT
  • Page 168 – Self-test mode summary; Foreground After the
  • Page 169 – Covered signals; functions in a future standard.
  • Page 171 – Code description; The protection code (see Table 68) is a cyclic binary BCH code.; Protection code; signs represent an; Error detection properties; Data In
  • Page 173 – Case 1—Power off during removal or insertion; the completion of the insertion or removal event.; Case 4—Current I/O process allowed during insertion or removal
  • Page 175 – Index
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Summary

Page 3 - Parallel SCSI Interface
Page 4 - ©2006, Seagate Technology LLC All rights reserved

©2006, Seagate Technology LLC All rights reserved Publication number: 100293069, Rev. A March 2006 Seagate and Seagate Technology are registered trademarks of Seagate Technology LLC. SeaTools, SeaFONE, SeaBOARD, SeaTDD, and the Wave logo are either registered trade-marks or trademarks of Seagate Tec...

Page 5 - Revision status summary sheet; Revision

Parallel SCSI Interface Product Manual, Rev. A iii Revision status summary sheet Revision Date Writer/Engineer Sheets Affected Rev. A 03/27/06 C. Chalupa/G. Houlder All.

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