ユーザーズマニュアル目次1.0 Interface requirements 171.1 How to use this interface manual 171.1.1 Scope of SCSI standards 271.1.2 Applicable standards 371.2 General interface description 371.2.1 Glossary 471.2.2 Keywords 1171.3 Physical interface characteristics 1271.4 Summary of SCSI messages 1272.0 SCSI bus 1372.1 SCSI bus signals overview 1572.1.1 Drive select 1772.1.2 Signal values 1772.2 Signal states 1772.2.1 SE signals 1772.2.2 LVD signals 1772.3 OR-tied signals 1872.4 Signal sources 1972.5 SCSI bus timing 2072.5.1 Arbitration delay 2672.5.2 ATN transmit setup time 2672.5.3 ATN receive setup time 2672.5.4 Bus clear delay 2772.5.5 Bus free delay 2772.5.6 Bus set delay 2772.5.7 Bus settle delay 2772.5.8 Cable skew delay 2772.5.9 Chip noise in receiver 2772.5.10 Clock jitter 2772.5.11 Crosstalk time shift 2772.5.12 De-skewed data valid window 2872.5.13 Flow control receive hold time 2872.5.14 Flow control receive setup time 2872.5.15 Flow control transmit hold time 2872.5.16 Flow control transmit setup time 2872.5.17 pCRC receive hold time 2872.5.18 pCRC receive setup time 2872.5.19 pCRC transmit hold time 2872.5.20 pCRC transmit setup time 2872.5.21 Data release delay 2972.5.22 DIFFSENS voltage filter time 2972.5.23 Offset induced time asymmetry 2972.5.24 Physical disconnection delay 2972.5.25 Power on to selection 2972.5.26 QAS arbitration delay 2972.5.27 QAS assertion delay 2972.5.28 QAS release delay 2972.5.29 QAS non-data phase REQ(ACK) period 2972.5.30 Receive assertion period 2972.5.31 Receive hold time 2972.5.32 Receive internal hold time 3072.5.33 Receive internal setup time 3072.5.34 Receive negation period 3072.5.35 Receive setup time 3082.5.36 Receive REQ(ACK) period tolerance 3082.5.37 Receive REQ assertion period with P_CRCA transitioning 3082.5.38 Receive REQ negation period with P_CRCA transitioning 3082.5.39 Receive skew compensation 3082.5.40 Receiver amplitude time skew 3182.5.41 REQ(ACK) period 3182.5.42 Reset delay 3182.5.43 Reset hold time 3182.5.44 Reset to selection 3182.5.45 Residual skew error 3182.5.46 Selection abort time 3182.5.47 Selection timeout delay 3182.5.48 Signal timing skew 3182.5.49 Skew correction range 3282.5.50 Strobe offset tolerance 3282.5.51 System deskew delay 3282.5.52 System noise at launch 3282.5.53 System noise at receiver 3282.5.54 Time asymmetry 3282.5.55 Transmit assertion period 3282.5.56 Transmit hold time 3282.5.57 Transmit ISI compensation 3282.5.58 Transmit negation period 3282.5.59 Transmit setup time 3382.5.60 Transmit REQ(ACK) period tolerance 3382.5.61 Transmit REQ assertion period with P_CRCA transitioning 3382.5.62 Transmit REQ negation period with P_CRCA transitioning 3382.5.63 Transmitter skew 3382.5.64 Transmitter time asymmetry 3382.6 Measurement points 3382.6.1 SE Fast-5 and Fast-10 measurement points 3382.6.2 SE Fast-20 measurement points 3382.6.3 LVD measurement points 3482.7 Clocking methods for data transfers 3482.8 Paced transfer on a SCSI bus 3682.9 Data transfer modes 3782.9.1 Asynchronous transfers 3782.9.2 Synchronous transfers 3782.9.3 Paced transfers 3782.10 ST DATA phase parallel transfers 3882.11 DT DATA phase parallel transfers 3882.11.1 Data group transfers 3882.11.2 Information unit transfers 3882.12 Negotiation 3982.12.1 Negotiation algorithm 3982.12.2 When to negotiate 4082.12.3 Negotiable fields 4082.12.4 Transfer agreements 4282.12.5 Transfer period factor 4382.12.6 REQ/ACK offset 4482.12.7 Transfer width exponent 4482.12.8 Protocol options 4582.12.8.1 IU_REQ 4582.12.8.2 DT_REQ 4682.12.8.3 QAS_REQ 4692.12.8.4 HOLD_MCS 4692.12.8.5 WR_FLOW 4792.12.8.6 RD_STRM 4792.12.8.7 RTI (Retain Training Information) 4792.12.8.8 PCOMP_EN 4792.12.9 Negotiable field combinations 4892.12.10 Message restrictions 4992.12.11 Negotiation message sequences 4993.0 Logical characteristics 5193.1 SCSI bus phases overview 5193.1.1 BUS FREE phase 5193.1.1.1 Unexpected and expected bus free phases 5193.1.1.2 Expected bus free phases 5293.1.2 Arbitration and QAS overview 5293.1.2.1 Normal ARBITRATION phase 5393.1.2.2 QAS protocol 5493.1.2.3 QAS phase overview 5493.2 SELECTION phase 5593.2.1 Selection overview 5693.2.1.1 Selection using attention condition 5693.2.1.1.1 Starting the SELECTION phase when using attention condition 5693.2.1.1.2 Information unit transfers disabled 5693.2.1.1.3 Information unit transfers enabled 5693.2.1.1.4 Selection using attention condition timeout procedure 5793.2.1.2 Selection without using attention condition 5793.2.1.2.1 Information unit transfers disabled or enabled 5793.2.1.2.2 Selection without using attention condition time-out procedure 5793.3 RESELECTION phase 5893.3.1 RESELECTION phase overview 5893.3.2 Physical reconnection 5893.3.3 Physical reconnection timeout procedure 5993.4 SCSI bus fairness 5993.5 Information transfer phases 6093.5.1 Asynchronous transfer 6193.5.2 Synchronous transfer 6193.5.2.1 ST synchronous data transfer 6193.5.2.2 DT synchronous transfer 6293.5.2.2.1 Information unit transfer 6293.5.2.2.2 Data group data field transfer 6493.5.3 Paced transfer 6893.5.3.1 Paced transfer training pattern 6893.5.3.1.1 DT DATA IN phase training pattern 6993.5.3.1.2 DT DATA OUT phase training pattern 7093.5.3.2 P1 data valid/invalid state transitions 7193.5.3.2.1 Starting pacing transfers at end of training pattern 7293.5.3.2.2 Starting pacing transfers with no training pattern 7293.5.3.2.3 Ending pacing transfers 7393.5.3.3 Paced information unit transfer 7393.5.3.4 Deskewing 7493.5.4 Wide transfer 7493.6 COMMAND phase 7593.6.1 COMMAND phase description 7593.6.2 COMMAND phase exception condition handling 7593.7 DATA phase 7593.7.1 DATA phase overview 75103.7.2 DT DATA IN phase 75103.7.3 DT DATA OUT phase 76103.7.4 ST DATA IN phase 76103.7.5 ST DATA OUT phase 76103.8 STATUS phase 76103.8.1 STATUS phase description 76103.8.2 STATUS phase exception condition handling 76103.9 MESSAGE phase 76103.9.1 MESSAGE phase overview 76103.9.2 MESSAGE IN phase 76103.9.2.1 MESSAGE IN phase exception condition handling 77103.9.3 MESSAGE OUT phase 77103.9.3.1 MESSAGE OUT phase exception condition handling 77103.10 Signal restrictions between phases 77103.11 SCSI bus phase sequences 78103.11.1 SCSI bus phase sequences overview 78103.11.2 Phase sequences for physical reconnection and selection using attention condition with information unit transfers disabled 78103.11.3 Phase sequences for selection without using attention condition with information unit transfers disabled 79103.11.4 Phase sequences for physical reconnection or selection without using attention condition with information unit transfers enabled 80103.11.5 Phase sequences for physical selection using attention condition with information unit transfers enabled 81103.12 Data bus protection 81103.12.1 Data bus protection overview 81103.12.2 ST data bus protection using parity 81103.12.3 DT data bus protection using CRC 82103.12.3.1 DT data bus protection using CRC overview 82103.12.3.2 Error detection capabilities 82103.12.3.3 Order of bytes in the CRC field 82104.0 Message system specification 83104.1 General message protocols and formats 83104.2 Message formats 83104.2.1 One-byte messages 84104.2.2 Two-byte messages 84104.2.3 Extended messages 84104.3 Message categories 85104.3.1 LINK CONTROL MESSAGES 85104.3.2 DISCONNECT 87104.3.3 IDENTIFY 87104.3.4 IGNORE WIDE RESIDUE 88104.3.5 INITIATOR DETECTED ERROR 89104.3.6 LINKED COMMAND COMPLETE 89104.3.7 MESSAGE PARITY ERROR 89104.3.8 MESSAGE REJECT 89104.3.9 MODIFY DATA POINTER 89104.3.10 MODIFY BIDIRECTIONAL DATA POINTER 90104.3.11 NO OPERATION 91104.3.12 PARALLEL PROTOCOL REQUEST 92104.3.12.1 PARALLEL PROTOCOL REQUEST 95104.3.13 QAS REQUEST 96104.3.14 RESTORE POINTERS 96104.3.15 SAVE DATA POINTERS 96104.3.16 SYNCHRONOUS DATA TRANSFER REQUEST 97114.3.16.1 Target initiated SDTR negotiation 99114.3.16.2 Initiator initiated SDTR negotiation 99114.3.17 TASK COMPLETE 99114.3.18 WIDE DATA TRANSFER REQUEST 100114.3.18.1 Target initiated WDTR negotiation 101114.3.18.2 Initiator initiated Wide Data Transfer Request (WDTR) negotiation 102114.4 Task attribute messages 102114.4.1 Task attribute message overview and codes 102114.4.2 ACA (AUTO CONTINGENT ALLEGIANCE) 103114.4.3 HEAD OF QUEUE 104114.4.4 ORDERED 104114.4.5 SIMPLE 104114.5 Task management messages 105114.5.1 Task management message codes 105114.5.2 ABORT TASK 105114.5.3 ABORT TASK SET 106114.5.4 CLEAR ACA 106114.5.5 CLEAR TASK SET 106114.5.6 LOGICAL UNIT RESET 106114.5.7 TARGET RESET 106115.0 Miscellaneous SCSI bus characteristics 107115.1 Attention condition 107115.2 Bus reset condition 108115.3 Hard reset 108115.4 Reset events 109115.4.1 Bus reset event 109115.4.2 Power on reset event 109115.4.3 Target reset event 109115.4.4 Transceiver mode change reset event 109115.5 Asynchronous condition recovery 109115.5.1 SCSI pointers 109115.5.2 Active pointers 110115.5.3 Saved pointers 110115.6 Command processing considerations and exception conditions 111115.6.1 Command processing considerations and exception conditions overview 111115.6.2 Asynchronous event notification 111115.6.3 Incorrect initiator connection 111115.6.4 Unexpected RESELECTION phase 112116.0 SPI information units 113116.1 Information unit transfer logical operations 113116.2 SPI information units 118116.2.1 SPI command information unit 118116.2.2 SPI L_Q information unit 121116.2.3 SPI data information unit 125116.2.4 SPI data stream information unit 125116.2.5 SPI status information unit 127117.0 SCSI commands 131117.1 Command implementation requirements 131117.1.1 Reserved 131117.2 Command Descriptor Block (CDB) 131117.2.1 Fixed and variable length Command Descriptor Block formats 133117.3 Status 138117.3.1 Status precedence 139127.4 Command examples 140127.4.1 Single command example 140127.4.2 Disconnect example 141127.5 Timing examples 142127.6 Command processing considerations and exception conditions 142127.6.1 Auto Contingent Allegiance or Contingent Allegiance 142127.6.1.1 Logical Unit response to Auto Contingent Allegiance or Contingent Allegiance 142127.6.1.2 Clearing an Auto Contingent Allegiance condition 143127.6.2 Overlapped commands 143127.6.3 Incorrect logical unit selection 144127.6.4 Sense data 144127.6.4.1 Asynchronous Event Reporting 144127.6.4.2 Autosense 145127.6.5 Unexpected RESELECTION phase 145127.6.6 Unit Attention condition 146127.6.7 Target hard reset 147127.6.8 Logical unit reset 147127.7 Queued tasks (formerly “queued I/O processes”) 147127.7.1 Untagged task queuing 147127.7.2 Tagged task queuing 148127.8 Parameter rounding 149127.9 Programmable operating definition 149127.10 Incorrect initiator connection 150128.0 Drive features 151128.1 S.M.A.R.T. system 151128.2 Self-test operations 151128.2.1 Default self-test 151128.2.2 The short and extended self-tests 151128.2.3 Self-test modes 152128.2.3.1 Foreground mode 152128.2.3.2 Background mode 152128.2.3.3 Elements common to foreground and background self-test modes 153128.3 Alternate error detection for the asynchronous information phases (AIP)-Command, Message, and Status 154128.3.1 Error detection for asynchronous information phases 154128.3.2 Protection code 154128.3.2.1 Covered signals 155128.3.2.2 Code description 157128.3.2.3 Error detection properties 157128.3.3 Protection code usage 157128.3.3.1 Protection code transmission 158128.3.3.2 Enabling protection code checking 158128.3.3.3 Disabling protection code checking 158128.3.4 Parity 158128.3.5 Error handling 158128.4 Removal and insertion of SCSI devices (popularly known as “hot plugging”) 158128.4.1 Removal and insertion of SCSI devices overview 158128.4.2 Case 1-Power off during removal or insertion 159128.4.3 Case 2-RST signal asserted continuously during removal or insertion 159128.4.4 Case 3-Current I/O processes not allowed during insertion or removal 159128.4.5 Case 4-Current I/O process allowed during insertion or removal 159128.5 SPI-3 to SCSI-2 terminology mapping 16012Figure 1. SCSI client-server model 413Figure 2. Voltage and current definitions 1813Figure 3. LVD Signaling sense 1813Figure 4. ST latching data vs. DT latching data 3513Figure 5. ST synchronous transfer example 3513Figure 6. DT synchronous transfer example 3613Figure 7. Paced transfer example 3613Figure 8. Example of a SCSI bus with paced transfers 3713Figure 9. Use of P1 to establish data valid and data invalid states 7213Figure 10. Phase sequences for physical reconnection and selection using attention condition with information unit transfers disabled 7913Figure 11. Phase sequences for selection without using attention condition with information unit transfers disabled 7913Figure 12. Phase sequences for physical reconnection or selection without using attention condition/ with information unit transfers enabled 8013Figure 13. Phase sequences for selection with attention condition/physical reconnection and information unit transfers enabled 8113Figure 14. SPI information unit sequence during initial connection 11513Figure 15. SPI information unit sequence during data type transfers 11613Figure 16. SPI information unit sequence during data stream type transfers 11713Figure 17. SPI information unit sequence during status transfers 11813Figure 18. Single command example 14013Figure 19. Disconnect example 14113Figure 20. Protection code generator 157131.0 Interface requirements151.1 How to use this interface manual151.1.1 Scope of SCSI standards161.1.2 Applicable standards171.2 General interface description171.2.1 Glossary181.2.2 Keywords251.3 Physical interface characteristics261.4 Summary of SCSI messages262.0 SCSI bus272.1 SCSI bus signals overview292.1.1 Drive select312.1.2 Signal values312.2 Signal states312.2.1 SE signals312.2.2 LVD signals312.3 OR-tied signals322.4 Signal sources332.5 SCSI bus timing342.5.1 Arbitration delay402.5.2 ATN transmit setup time402.5.3 ATN receive setup time402.5.4 Bus clear delay412.5.5 Bus free delay412.5.6 Bus set delay412.5.7 Bus settle delay412.5.8 Cable skew delay412.5.9 Chip noise in receiver412.5.10 Clock jitter412.5.11 Crosstalk time shift412.5.12 De-skewed data valid window422.5.13 Flow control receive hold time422.5.14 Flow control receive setup time422.5.15 Flow control transmit hold time422.5.16 Flow control transmit setup time422.5.17 pCRC receive hold time422.5.18 pCRC receive setup time422.5.19 pCRC transmit hold time422.5.20 pCRC transmit setup time422.5.21 Data release delay432.5.22 DIFFSENS voltage filter time432.5.23 Offset induced time asymmetry432.5.24 Physical disconnection delay432.5.25 Power on to selection432.5.26 QAS arbitration delay432.5.27 QAS assertion delay432.5.28 QAS release delay432.5.29 QAS non-data phase REQ(ACK) period432.5.30 Receive assertion period432.5.31 Receive hold time432.5.32 Receive internal hold time442.5.33 Receive internal setup time442.5.34 Receive negation period442.5.35 Receive setup time442.5.36 Receive REQ(ACK) period tolerance442.5.37 Receive REQ assertion period with P_CRCA transitioning442.5.38 Receive REQ negation period with P_CRCA transitioning442.5.39 Receive skew compensation442.5.40 Receiver amplitude time skew452.5.41 REQ(ACK) period452.5.42 Reset delay452.5.43 Reset hold time452.5.44 Reset to selection452.5.45 Residual skew error452.5.46 Selection abort time452.5.47 Selection timeout delay452.5.48 Signal timing skew452.5.49 Skew correction range462.5.50 Strobe offset tolerance462.5.51 System deskew delay462.5.52 System noise at launch462.5.53 System noise at receiver462.5.54 Time asymmetry462.5.55 Transmit assertion period462.5.56 Transmit hold time462.5.57 Transmit ISI compensation462.5.58 Transmit negation period462.5.59 Transmit setup time472.5.60 Transmit REQ(ACK) period tolerance472.5.61 Transmit REQ assertion period with P_CRCA transitioning472.5.62 Transmit REQ negation period with P_CRCA transitioning472.5.63 Transmitter skew472.5.64 Transmitter time asymmetry472.6 Measurement points472.6.1 SE Fast-5 and Fast-10 measurement points472.6.2 SE Fast-20 measurement points472.6.3 LVD measurement points482.7 Clocking methods for data transfers482.8 Paced transfer on a SCSI bus502.9 Data transfer modes512.9.1 Asynchronous transfers512.9.2 Synchronous transfers512.9.3 Paced transfers512.10 ST DATA phase parallel transfers522.11 DT DATA phase parallel transfers522.11.1 Data group transfers522.11.2 Information unit transfers522.12 Negotiation532.12.1 Negotiation algorithm532.12.2 When to negotiate542.12.3 Negotiable fields542.12.4 Transfer agreements562.12.5 Transfer period factor572.12.6 REQ/ACK offset582.12.7 Transfer width exponent582.12.8 Protocol options592.12.8.1 IU_REQ592.12.8.2 DT_REQ602.12.8.3 QAS_REQ602.12.8.4 HOLD_MCS602.12.8.5 WR_FLOW612.12.8.6 RD_STRM612.12.8.7 RTI (Retain Training Information)612.12.8.8 PCOMP_EN612.12.9 Negotiable field combinations622.12.10 Message restrictions632.12.11 Negotiation message sequences633.0 Logical characteristics653.1 SCSI bus phases overview653.1.1 BUS FREE phase653.1.1.1 Unexpected and expected bus free phases653.1.1.2 Expected bus free phases663.1.2 Arbitration and QAS overview663.1.2.1 Normal ARBITRATION phase673.1.2.2 QAS protocol683.1.2.3 QAS phase overview683.2 SELECTION phase693.2.1 Selection overview703.2.1.1 Selection using attention condition703.2.1.1.1 Starting the SELECTION phase when using attention condition703.2.1.1.2 Information unit transfers disabled703.2.1.1.3 Information unit transfers enabled703.2.1.1.4 Selection using attention condition timeout procedure713.2.1.2 Selection without using attention condition713.2.1.2.1 Information unit transfers disabled or enabled713.2.1.2.2 Selection without using attention condition time-out procedure713.3 RESELECTION phase723.3.1 RESELECTION phase overview723.3.2 Physical reconnection723.3.3 Physical reconnection timeout procedure733.4 SCSI bus fairness733.5 Information transfer phases743.5.1 Asynchronous transfer753.5.2 Synchronous transfer753.5.2.1 ST synchronous data transfer753.5.2.2 DT synchronous transfer763.5.2.2.1 Information unit transfer763.5.2.2.1.1 DT DATA IN phase information unit transfer exception condition handling773.5.2.2.1.2 DT DATA OUT phase information unit transfer exception condition handling783.5.2.2.2 Data group data field transfer783.5.2.2.2.1 Data group pad field and pCRC field transfer to SCSI initiator port793.5.2.2.2.2 Data group pad field and pCRC field transfer to SCSI target port803.5.3 Paced transfer823.5.3.1 Paced transfer training pattern823.5.3.1.1 DT DATA IN phase training pattern833.5.3.1.2 DT DATA OUT phase training pattern843.5.3.2 P1 data valid/invalid state transitions853.5.3.2.1 Starting pacing transfers at end of training pattern863.5.3.2.2 Starting pacing transfers with no training pattern863.5.3.2.3 Ending pacing transfers873.5.3.3 Paced information unit transfer873.5.3.4 Deskewing883.5.4 Wide transfer883.6 COMMAND phase893.6.1 COMMAND phase description893.6.2 COMMAND phase exception condition handling893.7 DATA phase893.7.1 DATA phase overview893.7.2 DT DATA IN phase893.7.3 DT DATA OUT phase903.7.4 ST DATA IN phase903.7.5 ST DATA OUT phase903.8 STATUS phase903.8.1 STATUS phase description903.8.2 STATUS phase exception condition handling903.9 MESSAGE phase903.9.1 MESSAGE phase overview903.9.2 MESSAGE IN phase903.9.2.1 MESSAGE IN phase exception condition handling913.9.3 MESSAGE OUT phase913.9.3.1 MESSAGE OUT phase exception condition handling913.10 Signal restrictions between phases913.11 SCSI bus phase sequences923.11.1 SCSI bus phase sequences overview923.11.2 Phase sequences for physical reconnection and selection using attention condition with information unit transfers disabled923.11.3 Phase sequences for selection without using attention condition with information unit transfers disabled933.11.4 Phase sequences for physical reconnection or selection without using attention condition with information unit transfers enabled943.11.5 Phase sequences for physical selection using attention condition with information unit transfers enabled953.12 Data bus protection953.12.1 Data bus protection overview953.12.2 ST data bus protection using parity953.12.3 DT data bus protection using CRC963.12.3.1 DT data bus protection using CRC overview963.12.3.2 Error detection capabilities963.12.3.3 Order of bytes in the CRC field964.0 Message system specification974.1 General message protocols and formats974.2 Message formats974.2.1 One-byte messages984.2.2 Two-byte messages984.2.3 Extended messages984.3 Message categories994.3.1 LINK CONTROL MESSAGES994.3.2 DISCONNECT1014.3.3 IDENTIFY1014.3.4 IGNORE WIDE RESIDUE1024.3.5 INITIATOR DETECTED ERROR1034.3.6 LINKED COMMAND COMPLETE1034.3.7 MESSAGE PARITY ERROR1034.3.8 MESSAGE REJECT1034.3.9 MODIFY DATA POINTER1034.3.10 MODIFY BIDIRECTIONAL DATA POINTER1044.3.11 NO OPERATION1054.3.12 PARALLEL PROTOCOL REQUEST1064.3.12.1 PARALLEL PROTOCOL REQUEST1094.3.13 QAS REQUEST1104.3.14 RESTORE POINTERS1104.3.15 SAVE DATA POINTERS1104.3.16 SYNCHRONOUS DATA TRANSFER REQUEST1114.3.16.1 Target initiated SDTR negotiation1134.3.16.2 Initiator initiated SDTR negotiation1134.3.17 TASK COMPLETE1134.3.18 WIDE DATA TRANSFER REQUEST1144.3.18.1 Target initiated WDTR negotiation1154.3.18.2 Initiator initiated Wide Data Transfer Request (WDTR) negotiation1164.4 Task attribute messages1164.4.1 Task attribute message overview and codes1164.4.2 ACA (AUTO CONTINGENT ALLEGIANCE)1174.4.3 HEAD OF QUEUE1184.4.4 ORDERED1184.4.5 SIMPLE1184.5 Task management messages1194.5.1 Task management message codes1194.5.2 ABORT TASK1194.5.3 ABORT TASK SET1204.5.4 CLEAR ACA1204.5.5 CLEAR TASK SET1204.5.6 LOGICAL UNIT RESET1204.5.7 TARGET RESET1205.0 Miscellaneous SCSI bus characteristics1215.1 Attention condition1215.2 Bus reset condition1225.3 Hard reset1225.4 Reset events1235.4.1 Bus reset event1235.4.2 Power on reset event1235.4.3 Target reset event1235.4.4 Transceiver mode change reset event1235.5 Asynchronous condition recovery1235.5.1 SCSI pointers1235.5.2 Active pointers1245.5.3 Saved pointers1245.6 Command processing considerations and exception conditions1255.6.1 Command processing considerations and exception conditions overview1255.6.2 Asynchronous event notification1255.6.3 Incorrect initiator connection1255.6.4 Unexpected RESELECTION phase1266.0 SPI information units1276.1 Information unit transfer logical operations1276.2 SPI information units1326.2.1 SPI command information unit1326.2.2 SPI L_Q information unit1356.2.3 SPI data information unit1396.2.4 SPI data stream information unit1396.2.5 SPI status information unit1417.0 SCSI commands1457.1 Command implementation requirements1457.1.1 Reserved1457.2 Command Descriptor Block (CDB)1457.2.1 Fixed and variable length Command Descriptor Block formats1477.3 Status1527.3.1 Status precedence1537.4 Command examples1547.4.1 Single command example1547.4.2 Disconnect example1557.5 Timing examples1567.6 Command processing considerations and exception conditions1567.6.1 Auto Contingent Allegiance or Contingent Allegiance1567.6.1.1 Logical Unit response to Auto Contingent Allegiance or Contingent Allegiance1567.6.1.2 Clearing an Auto Contingent Allegiance condition1577.6.2 Overlapped commands1577.6.3 Incorrect logical unit selection1587.6.4 Sense data1587.6.4.1 Asynchronous Event Reporting1587.6.4.2 Autosense1597.6.5 Unexpected RESELECTION phase1597.6.6 Unit Attention condition1607.6.7 Target hard reset1617.6.8 Logical unit reset1617.7 Queued tasks (formerly “queued I/O processes”)1617.7.1 Untagged task queuing1617.7.2 Tagged task queuing1627.8 Parameter rounding1637.9 Programmable operating definition1637.10 Incorrect initiator connection1648.0 Drive features1658.1 S.M.A.R.T. system1658.2 Self-test operations1658.2.1 Default self-test1658.2.2 The short and extended self-tests1658.2.3 Self-test modes1668.2.3.1 Foreground mode1668.2.3.2 Background mode1668.2.3.3 Elements common to foreground and background self-test modes1678.3 Alternate error detection for the asynchronous information phases (AIP)- Command, Message, and Status1688.3.1 Error detection for asynchronous information phases1688.3.2 Protection code1688.3.2.1 Covered signals1698.3.2.2 Code description1718.3.2.3 Error detection properties1718.3.3 Protection code usage1718.3.3.1 Protection code transmission1728.3.3.2 Enabling protection code checking1728.3.3.3 Disabling protection code checking1728.3.4 Parity1728.3.5 Error handling1728.4 Removal and insertion of SCSI devices (popularly known as “hot plugging”)1728.4.1 Removal and insertion of SCSI devices overview1728.4.2 Case 1-Power off during removal or insertion1738.4.3 Case 2-RST signal asserted continuously during removal or insertion1738.4.4 Case 3-Current I/O processes not allowed during insertion or removal1738.4.5 Case 4-Current I/O process allowed during insertion or removal1738.5 SPI-3 to SCSI-2 terminology mapping174A175B175C175D176E177F177G177H177I177K178L178M178N179O179P179Q180R180S181T182U183V183W183サイズ: 5.13MBページ数: 186Language: Englishマニュアルを開く