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Text File | 1990-03-09 | 83KB | 1,591 lines

.RR--!--!--!--!--!--!--!--!--!--!--!--!--!--!--!--!--!--!--!--!--!--!--!--!--!--! .PL 62 .LM 1 .RM 78 .MT3 .MB4 .HM1 .FM1 .PO10 .CW10 .SR2 .UJ0 .OJ0 .UL1 .heOptical Memory Devices 3/9/90 .foSCSI-2 draft proposed American National Standard 15-# Revision 10c .pn 1 .cp 30 .aw off .pm 0 15. Optica∞ Memor∙ Devices .aw on .pm 3 .cp 20 .aw off .pm 0 15.1. Model fo≥ Optica∞ Memor∙ Devices .aw on .pm 3 ááAε optica∞ memor∙ devicσ i≤ ß i≤ onσ tha⌠ caε potentiall∙ suppor⌠ ß variet∙ ì oµ optica∞ media¼ (e.g.¼ reaΣ-only¼ writσ-once¼ erasable¼ o≥ reversible)« Iε ì severa∞ respect≤ aε optica∞ memor∙ devicσ i≤ simila≥ t∩ ß direc⌠-acces≤ ì device« Howeve≥ optica∞ memor∙ device≤ typicall∙ offe≥ feature≤ tha⌠ arσ no⌠ ì availablσ witΦ othe≥ devices¼ includinτ ver∙ largσ capacit∙ removablσ media« ááThesσ device≤ ofteε requirσ thσ function≤ whicΦ arσ no⌠ founΣ iε direc⌠-ì acces≤ device≤ sucΦ a≤ logica∞ blocδ update¼ prσ-erasurσ beforσ writing¼ o≥ ì scanninτ fo≥ blanδ mediuφ anΣ twelvσ-bytσ commanΣ descripto≥ blocks« ááThi≤ standarΣ ha≤ specifiπ devicσ type≤ fo≥ writσ-oncσ anΣ C─-RO═ device≤ ì whicΦ als∩ usσ optica∞ media¼ bu⌠ arσ no⌠ capablσ oµ supportinτ ß severa∞ ì type≤ oµ optica∞ media« I⌠ i≤ possiblσ t∩ implemen⌠ device≤ usinτ writσ-oncσ ì mediß a≤ optica∞ memor∙ devices« I⌠ i≤ possiblσ t∩ implemen⌠ device≤ usinτ ì reaΣ-onl∙ mediß a≤ optica∞ memor∙ devices¼ howeve≥ device≤ usinτ C─-RO═ mediß ì havσ certaiε uniquσ characteristic≤ anΣ shoulΣ no⌠ bσ implementeΣ a≤ optica∞ ì memor∙ devices. áá┴ mode∞ oµ optica∞ memor∙ device≤ i≤ complicateΣ b∙ thσ naturσ oµ onσ oµ it≤ ì potentia∞ advantages¼ tha⌠ i⌠ caε suppor⌠ mediß whicΦ ha≤ differen⌠ ì characteristics« Therσ arσ threσ type≤ oµ optica∞ mediß iε genera∞ use¼ reaΣ-ì only¼ writσ-oncσ anΣ reversible« ReaΣ-onl∙ mediß i≤ typicall∙ useΣ a≤ fo≥ ì publishinτ application≤ requirinτ disseminatioε oµ largσ amount≤ oµ data¼ ì sincσ thσ datß caε bσ replicateΣ oε ß disδ a⌠ lo≈ cost« Writσ-oncσ mediß i≤ ì useΣ iε application≤ tha⌠ havσ largσ backu≡ o≥ archivinτ requirements« I⌠ i≤ ì als∩ useΣ iε application≤ tha⌠ havσ ß neeΣ fo≥ largσ amount≤ oµ oε-linσ ì referencσ information« Reversiblσ mediß i≤ typicall∙ useΣ iε application≤ ì tha⌠ neeΣ largσ amount≤ oµ temporar∙ storagσ (e.g.¼ graphic≤ workstations⌐ anΣ ì caε takσ advantagσ oµ removablσ media« Iε somσ application≤ reversiblσ mediß ì drive≤ arσ useΣ iε placσ oµ direc⌠-acces≤ devices. ááReversiblσ mediß usuall∙ need≤ t∩ bσ reverseΣ (erased¼ blanked⌐ beforσ ne≈ ì datß caε bσ written« Iε sucΦ case≤ aε erasσ operatioε i≤ requireΣ beforσ datß ì caε bσ written« Somσ optica∞ memor∙ device≤ perforφ thi≤ erasσ operatioε ì implici⌠ witΦ eacΦ writσ operatioε whicΦ typicall∙ wil∞ impac⌠ thσ datß ì throughput« Somσ device≤ caε perforφ thσ erasσ a≤ ß separately« Thσ ERAS┼ ì commanΣ ma∙ bσ useΣ t∩ erasσ area≤ oµ thσ mediuφ witΦ ß correspondinτ ì increasσ iε datß throughpu⌠ oε subsequen⌠ writσ operations« Product≤ usinτ ì optica∞ mediß shoulΣ no⌠ bσ implementeΣ a≤ direc⌠-acces≤ device≤ duσ t∩ thσ ì overheaΣ penalt∙ oε performancσ froφ thσ emulatioε anΣ lacδ oµ suppor⌠ iε ì direc⌠-acces≤ device≤ t∩ takσ advantagσ oµ thσ sophisticateΣ feature≤ ì availablσ iε witΦ optica∞ memor∙ devices« .cp 8 ááThσ typσ oµ mediuφ supporteΣ b∙ thσ devicσ anΣ thσ typσ oµ mediuφ currentl∙ ì loadeΣ caε bσ determineΣ b∙ examininτ thσ MOD┼ SENS┼ data« Onσ uniquσ featurσ ì oµ optica∞ memor∙ device≤ i≤ suppor⌠ oµ mediß witΦ mixeΣ type≤ (e.g.¼ mediß ì witΦ reaΣ-onl∙ anΣ writσ-oncσ areas)« Thσ INQUIR┘ commanΣ inform≤ thσ ì initiato≥ tha⌠ thσ targe⌠ i≤ aε optica∞ memor∙ device╗ thσ initiato≥ shoulΣ ì theε determinσ thσ mediuφ typσ froφ thσ MOD┼ SENS┼ data« Thσ initiato≥ need≤ ì t∩ bσ cognizan⌠ oµ mediuφ typσ sincσ thσ device≤ characteristic≤ caε changσ ì wheε thσ mediß i≤ changed. è.cp 7 ááWritσ-oncσ mediß caε havσ valiΣ datß writteε t∩ ß logica∞ blocδ once« Thi≤ ì i≤ aε importan⌠ featurσ wherσ audi⌠ trail≤ anΣ permanen⌠ archive≤ arσ needed« ì Man∙ optica∞ memor∙ device≤ supportinτ writσ-oncσ mediß havσ thσ abilit∙ t∩ ì updatσ ß logica∞ block¼ preservinτ thσ previou≤ generatioε oµ data« Thesσ ì device≤ usuall∙ providσ ß mean≤ t∩ recove≥ thσ previou≤ datß througΦ usσ oµ ì command≤ tha⌠ allo≈ reaΣ acces≤ t∩ thσ differen⌠ generation≤ oµ datß tha⌠ arσ ì storeΣ a⌠ thσ samσ logica∞ blocδ address. ááAε importan⌠ requiremen⌠ iε dealinτ witΦ optica∞ mediß i≤ determininτ thσ ì whicΦ logica∞ block≤ arσ contaiε writteε datß anΣ whicΦ arσ blank« ┴ blanδ ì logica∞ blocδ i≤ onσ tha⌠ i≤ properl∙ initializeΣ s∩ tha⌠ datß writteε t∩ i⌠ ì caε bσ recovered« Thσ logica∞ block≤ usuall∙ havσ ß flaτ associateΣ witΦ eacΦ ì tha⌠ indicate≤ whethe≥ the∙ havσ beeε writteε o≥ not« ááMan∙ oµ thσ strategie≤ useΣ t∩ managσ writσ oncσ anΣ erasablσ mediß depenΣ ì oε beinτ ablσ t∩ determinσ thσ boundar∙ betweeε writteε anΣ blanδ area≤ oµ thσ ì medium« Thσ MEDIU═ SCA╬ commanΣ i≤ usefu∞ iε findinτ blanδ area≤ fo≥ ì subsequen⌠ writσ operations. .cp 10 .aw off .pm 0 15.1.1. Defec⌠ Management .aw on .pm 3 ááDefec⌠ managemen⌠ caε als∩ bσ performeΣ b∙ usσ oµ logica∞ blocδ caε bσ ì updatinτ iε ß manne≥ simila≥ t∩ tha⌠ useΣ b∙ direc⌠-acces≤ device≤ witΦ thσ ì REASSIG╬ BLOCK╙ command« Thσ advantagσ oµ usinτ thσ updatinτ (whicΦ i≤ no⌠ ì supporteΣ b∙ direc⌠-acces≤ devices⌐ i≤ acces≤ t∩ thσ previou≤ data. ááThσ updatσ operatioε assign≤ aε alternatσ physica∞ blocδ t∩ thσ logica∞ ì blocδ whilσ simultaneousl∙ writinτ thσ datß t∩ thσ block« Command≤ arσ ì provideΣ t∩ allo≈ thσ recover∙ oµ previou≤ generation≤ oµ updateΣ blocks. ááDefec⌠ managemen⌠ oε optica∞-memor∙ device≤ i≤ usuall∙ vendo≥ specific« ì Howeve≥ therσ arσ standard≤ fo≥ somσ type≤ oµ optica∞-memor∙ mediß tha⌠ ì specif∙ defec⌠ managemen⌠ techniques« Thesσ standards¼ wherσ the∙ exist¼ ma∙ ì supersedσ thσ implementatioε requirement≤ pertaininτ t∩ erro≥ anΣ defec⌠ ì reportinτ iε thi≤ standard. .cp 10 .aw off .pm 0 15.1.2. Erro≥ Reporting .aw on .pm 3 ááIµ an∙ oµ thσ followinτ condition≤ occu≥ durinτ thσ executioε oµ ß commanΣ ì thσ targe⌠ shal∞ returε CHEC╦ CONDITIO╬ status« Thσ appropriatσ sensσ ke∙ anΣ ì additiona∞ sensσ codσ shoulΣ bσ set« Thσ followinτ tablσ illustrate≤ somσ ì erro≥ condition≤ anΣ thσ applicablσ sensσ keys« Thσ tablσ doe≤ no⌠ providσ aε ì exhaustivσ enumeratioε oµ al∞ condition≤ tha⌠ ma∙ causσ thσ CHEC╦ CONDITIO╬ ì status. .cp 25è.pm 0 .aw off Condition Sense Key ---------------------------------------------- ---------------------------- Invalid logical block address ILLEGAL REQUEST UnsupporteΣ optioε requesteΣ ILLEGA╠ REQUEST Target reset or medium change since last command from this initiator UNIT ATTENTION Selµ diagnostiπ faileΣ HARDWAR┼ ERROR Unrecovered read error MEDIUM ERROR HARDWAR┼ ERROR Recovered read error RECOVERED ERROR Overrun or other error that might be resolved by repeating the command ABORTED COMMAND Attempt to write on write protected mediuφ DAT┴ PROTECT Attemp⌠ t∩ reaΣ ß blanδ o≥ previously unwritteε blocδ« BLAN╦ CHEC╦ Attemp⌠ t∩ writσ ß previousl∙ writteε blocδ anΣ blanδ checkinτ i≤ enableΣ« BLAN╦ CHEC╦ Attemp⌠ t∩ writσ oε reaΣ-onl∙ mediuφ« DAT┴ PROTECT ááIε thσ casσ oµ aε invaliΣ logica∞ blocδ address¼ thσ sensσ datß informatioε ì fielΣ shal∞ bσ se⌠ t∩ thσ logica∞ blocδ addres≤ oµ thσ firs⌠ invaliΣ address. ááIε thσ casσ oµ aε attemp⌠ t∩ reaΣ ß blanδ o≥ previousl∙ unwritteε block¼ thσ ì sensσ datß informatioε fielΣ shal∞ bσ se⌠ t∩ thσ logica∞ blocδ addres≤ oµ thσ ì firs⌠ blanδ blocδ encountered« Thσ datß reaΣ u≡ t∩ tha⌠ blocδ shal∞ bσ ì transferred. ááIε thσ casσ oµ aε attemp⌠ t∩ writσ ß previousl∙ writteε blocδ anΣ blanδ ì checkinτ i≤ enabled¼ thσ sensσ informatioε fielΣ shal∞ bσ se⌠ t∩ thσ logica∞ ì blocδ addres≤ oµ thσ firs⌠ noε-blanδ blocδ encountered. .cp 54è.aw off .pm 0 15.2. Command≤ fo≥ Optica∞ Memor∙ Devices .aw on .pm 3 ááThσ command≤ fo≥ optica∞ memor∙ device≤ shal∞ bσ a≤ showε iε Table1╡-▒ anΣ ì 1╡-2. .aw off .pm 0 .cp 40 Table 15-1: Commands for Optica∞ Memor∙ Devices(1) ============================================================================== Operation Command Name Code Type Section Pagσ ------------------------------------------------------------------------------ CHANG┼ DEFINITIO╬ 40h ╧ 7.2.1 COMPARE 39h O 7.2.2 COPY 18h O 7.2.3 COPY AND VERIFY 3Ah O 7.2.4 ERAS┼(10) 2CΦ ╧ 15.2.1 ERAS┼(12) ACΦ ╧ 15.2.2 FORMAT UNIT 04h O 8.2.1 INQUIRY 12h M 7.2.5 LOC╦ UNLOCK CACHE 36h O 8.2.2 LOG SELEC╘ 4Ch O 7.2.6 LOG SENSE 4Dh O 7.2.7 MEDIUM SCA╬ 38Φ ╧ 15.2.3 MODE SELECT(6) 15h O 7.2.8 MODE SELECT(10) 55h O 7.2.9 MODE SENSE(6) 1Ah O 7.2.10 MODE SENSE(10) 5Ah O 7.2.11 PRE-FETCH 34h O 8.2.3 PREVEN╘ ALLOW MEDIUM REMOVAL 1Eh O 8.2.4 READ(6) 08h O 8.2.5 READ(10) 28h M 8.2.6 READ(12) A8h O 15.2.4 READ BUFFER 3Ch O 7.2.12 READ CAPACITY 25h M 8.2.7 READ DEFECT DATA(10) 37h O 8.2.8 READ DEFECT DATA(12⌐ B7h O 15.2.5 REA─ GENERATIO╬ 29Φ ╧ 15.2.6 READ LONG 3Eh O 8.2.9 REA─ UPDAT┼D BLOC╦ 2DΦ ╧ 15.2.7 REASSIGN BLOCKS 07h O 8.2.10 RECEIVE DIAGNOSTIC RESULTS 1Ch O 7.2.13 RELEASE 17h M 8.2.11 REQUEST SENSE 03h M 7.2.14 RESERVE 16h M 8.2.12 REZERO UNIT 01h O 8.2.13 ============================================================================= .aw on .pm 3 .aw off .pm 0 .cp 40è Table 15-2: Commands for Optica∞ Memor∙ Device≤(2) ============================================================================== Operation Command Name Code Type Section Page ------------------------------------------------------------------------------ SEARCH DATA EQUAL(10⌐ 31h O 8.2.14.1 SEARCH DATA EQUAL(12⌐ B1h O 15.2.8 SEARCH DATA HIGH(10⌐ 30h O 8.2.14.2 SEARCH DATA HIGH(12⌐ B0h O 15.2.8 SEARCH DATA LOW(10⌐ 32h O 8.2.14.3 SEARCH DATA LOW(12⌐ B2h O 15.2.8 SEEK(6) 0Bh O 8.2.15 SEEK(10) 2Bh O 8.2.15 SEND DIAGNOSTIC 1Dh M 7.2.15 SET LIMITS(10) 33h O 8.2.16 SET LIMITS(12) B3h O 15.2.9 STAR╘ STOP UNIT 1Bh O 8.2.17 SYNCHRONIZ┼ CACHE 35h O 8.2.18 TEST UNIT READY 00h M 7.2.16 UPDAT┼ BLOC╦ 3DΦ ╧ 15.2.10 VERIFY(10) 2Fh O 15.2.11 VERIFY(12) AFh O 15.2.12 WRITE(6) 0Ah O 8.2.20 WRITE(10) 2Ah M 15.2.13 WRITE(12) AAh O 15.2.14 WRITE AN─ VERIFY(10⌐ 2Eh O 15.2.15 WRITE AND VERIFY(12⌐ AEh O 15.2.16 WRITE BUFFER 3Bh O 7.2.17 WRITE LONG 3Fh O 8.2.23 ============================================================================= .aw on .pm 3 ááKey║ ═ ╜ CommanΣ implementatioε i≤ mandatory. áá ╧ ╜ CommanΣ implementatioε i≤ optional. .cp6 ááThσ followinτ code≤ arσ vendo≥ specific║ 20h¼ 21h¼ 22h¼ 23h¼ anΣ C0Φ througΦ ì FFh« Al∞ remaininτ code≤ fo≥ optica∞ memor∙ device≤ arσ reserveΣ fo≥ futurσ ì standardization. .cp 35è.aw off 15.2.1. ERASE(10) Command Table 15-3: ERASE(10) Command ============================================================================== Bit| 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | Byte | | | | | | | | | ============================================================================== 0 | Operation Code (2Ch) | -----|-----------------------------------------------------------------------| 1 | Logical Unit Number | ReserveΣ | ERA ⁿReserveΣ| RelAdr | -----|-----------------------------------------------------------------------| 2 | (MSB) | -----|--- ---| 3 | | -----|--- Logical Block Address ---| 4 | | -----|--- ---| 5 | (LSB) | -----|-----------------------------------------------------------------------| ╢ | Reserved | -----|-----------------------------------------------------------------------| 7 | (MSB) | -----|--- Transfer LengtΦ ---| 8 ⁿ (LSB⌐ | -----|-----------------------------------------------------------------------| ╣ | Control | ============================================================================== .aw on .pm 3 ááThσ ERASE(10⌐ commanΣ (Tablσ 1╡-3⌐ request≤ tha⌠ thσ targe⌠ erasσ thσ ì specifieΣ numbe≥ oµ block≤ startinτ a⌠ thσ specifieΣ logica∞ blocδ addres≤ oε ì thσ medium« A≤ useΣ here¼ "erasedó mean≤ eithe≥ thσ mediuφ shal∞ bσ erased¼ ì o≥ ß patterε shal∞ bσ writteε oε thσ mediuφ tha⌠ appear≤ t∩ thσ targe⌠ a≤ n∩ ì datß present« Thσ block≤ eraseΣ shal∞ bσ considereΣ blanδ fo≥ purpose≤ oµ ì blanδ checkinτ (seσ 15.1)« Thσ previou≤ datß recordeΣ oε thσ medium¼ iµ any¼ ì shal∞ no⌠ bσ recoverable. ááThσ erasσ al∞ (ERA⌐ bi⌠ se⌠ t∩ onσ indicate≤ tha⌠ al∞ remaininτ block≤ oε ì thσ mediuφ shal∞ bσ erased« Iµ thσ ER┴ bi⌠ i≤ se⌠ t∩ onσ anΣ iµ thσ numbe≥ oµ ì block≤ i≤ no⌠ zero¼ thσ targe⌠ shal∞ returε CHEC╦ CONDITION¼ anΣ thσ sensσ ke∙ ì shal∞ bσ se⌠ t∩ ILLEGA╠ REQUEST¼ witΦ aε additiona∞ sensσ codσ oµ INVALI─ ì FIEL─ I╬ CDB. ááSeσ 8.2.▓ fo≥ ß descriptioε oµ thσ RelAd≥ bi⌠ anΣ logica∞ blocδ addres≤ ì field. .cp 5 ááThσ transfe≥ lengtΦ specifie≤ thσ numbe≥ oµ contiguou≤ logica∞ block≤ tha⌠ ì shal∞ bσ eraseΣ wheε thσ ER┴ bi⌠ i≤ zero« Iµ thσ ER┴ bi⌠ i≤ zer∩ ß transfe≥ ì lengtΦ oµ zer∩ indicate≤ tha⌠ n∩ block≤ shal∞ bσ erased« Thi≤ conditioε shal∞ ì no⌠ bσ considereΣ a≤ aε erro≥ anΣ n∩ datß shal∞ bσ erased« An∙ othe≥ valuσ ì indicate≤ thσ numbe≥ oµ logica∞ block≤ tha⌠ shal∞ bσ erased« .cp 3èááThi≤ commanΣ shal∞ bσ terminateΣ witΦ ß statu≤ oµ RESERVATIO╬ CONFLIC╘ iµ ì an∙ reservatioε acces≤ conflic⌠ (seσ 8.2.12⌐ exist≤ anΣ n∩ datß shal∞ bσ ì erased. .cp 3 .pm 0 .lm 3 ááIMPLEMENTOR╙ NOTE║ Thi≤ commanΣ allow≤ thσ use≥ t∩ separatσ thσ erasσ anΣ ì ááwritσ operations« Thi≤ ma∙ increasσ systeφ performancσ iε certaiε ì ááapplications« .pm 3 .lm 1 .cp 35 .aw off .pm 0 15.2.2. ERASE(12) Command Table 15-4: ERASE(12) Command ============================================================================== Bit| 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | Byte | | | | | | | | | ============================================================================== 0 | Operation Code (ACh) | -----|-----------------------------------------------------------------------| 1 | Logical Unit Number | ReserveΣ | ERA ⁿReserveΣ| RelAdr | -----|-----------------------------------------------------------------------| 2 | (MSB) | -----|--- ---| 3 | | -----|--- Logical Block Address ---| 4 | | -----|--- ---| 5 | (LSB) | -----|-----------------------------------------------------------------------| 6 | (MSB) | -----|--¡ ---| 7 ⁿ | -----|--- Transfer LengtΦ ---| 8 | | -----|--¡ ---| ╣ | (LSB) | -----|-----------------------------------------------------------------------| 10 | Reserved | -----|-----------------------------------------------------------------------| 11 | Control | ============================================================================== .aw on .pm 3 .cp 2 ááThσ ERASE(12⌐ commanΣ (Tablσ 1╡-4⌐ request≤ tha⌠ thσ targe⌠ erasσ thσ ì specifieΣ numbe≥ oµ block≤ startinτ a⌠ thσ specifieΣ logica∞ blocδ addres≤ oε ì thσ medium. .cp 2 ááSeσ thσ ERASE(10⌐ commanΣ (15.2.1⌐ fo≥ ß descriptioε oµ thσ field≤ iε thi≤ ì command. .cp 35è.aw off .pm 0 15.2.3. MEDIUM SCAN Command Table 15-5: MEDIUM SCAN Command ============================================================================== Bit | 7 | 6 | 5 | ┤ | 3 | 2 | 1 | 0 | Byte ⁿ | ⁿ ⁿ | | | | | ============================================================================== ░ ⁿ Operation Code (38h) | ------|----------------------------------------------------------------------| 1 | Logica∞ Uni⌠ Numbe≥ ⁿ WBS ⁿ ASA ⁿ RS─ ⁿ PRA ⁿ RelAd≥ | ------|----------------------------------------------------------------------| 2 | (MSB) | ------|--- ---| 3 | | ------|--- Logica∞ Blocδ Address ---| 4 | | ------|--- ---| 5 | (LSB) | ------|----------------------------------------------------------------------| 6 | Reserved | ------|----------------------------------------------------------------------| 7 | Reserved | ------|----------------------------------------------------------------------| 8 | Parameter List Length | ------|----------------------------------------------------------------------| 9 ⁿ Control | ============================================================================== .aw on .pm 3 ááThσ MEDIU═ SCA╬ commanΣ (Tablσ 1╡-5⌐ request≤ thσ targe⌠ t∩ scaε thσ mediuφ ì fo≥ ß contiguou≤ se⌠ oµ writteε o≥ blanδ logica∞ blocks« áá┴ writteε blocδ searcΦ (WBS⌐ bi⌠ oµ zer∩ indicate≤ tha⌠ thσ scaε i≤ fo≥ ì blanδ blocks« ┴ WB╙ bi⌠ oµ onσ indicate≤ tha⌠ thσ scaε i≤ fo≥ writteε blocks. ááAε advanceΣ scaε algorithφ (ASA⌐ bi⌠ oµ zer∩ indicate≤ tha⌠ thσ scaε areß i≤ ì scanneΣ iε sequentia∞ orde≥ (a≤ selecteΣ b∙ thσ RS─ bit)« Aε AS┴ bi⌠ oµ onσ ì indicate≤ t∩ thσ targe⌠ tha⌠ thσ writteε anΣ blanδ area≤ withiε thσ scaε areß ì forφ contiguou≤ extent≤ (a≤ opposeΣ t∩ scattereΣ blocks)« Thi≤ indicatioε i≤ ì advisor∙ t∩ thσ target. .lm 3 ááIMPLEMENTOR╙ NOTE║ Thσ purposσ oµ thi≤ bi⌠ i≤ t∩ allo≈ thσ targe⌠ t∩ usσ ß ì áámorσ advanceΣ algorithφ (sucΦ a≤ ß binar∙ search⌐ t∩ locatσ thσ requesteΣ ì ááblocks. .lm 1 .cp 3 áá┴ reversσ scaε directioε (RSD⌐ bi⌠ oµ zer∩ indicate≤ thσ scaε shal∞ begiε ì witΦ thσ firs⌠ logica∞ blocδ oµ thσ scaε area« ┴ RS─ bi⌠ oµ onσ indicate≤ thσ ì scaε shal∞ begiε witΦ thσ las⌠ logica∞ blocδ oµ thσ scaε area. .cp 10èáá┴ partia∞ result≤ acceptablσ (PRA⌐ bi⌠ oµ zer∩ indicate≤ tha⌠ thσ scaε shal∞ ì no⌠ bσ considereΣ satisfieΣ unti∞ ß contiguou≤ se⌠ oµ block≤ i≤ founΣ withiε ì thσ scaε areß whicΦ i≤ greate≥ thaε o≥ equa∞ iε sizσ t∩ thσ numbe≥ oµ block≤ ì requested¼ anΣ meet≤ thσ othe≥ criteriß specifieΣ iε thσ commanΣ descripto≥ ì block« ┴ PR┴ bi⌠ oµ onσ indicate≤ tha⌠ thσ scaε ma∙ bσ satisfieΣ b∙ ß ì contiguou≤ se⌠ oµ block≤ withiε thσ scaε areß whicΦ i≤ les≤ thaε thσ numbe≥ oµ ì block≤ requested¼ anΣ meet≤ thσ othe≥ criteriß specifieΣ iε thσ commanΣ ì descripto≥ block« Iε thi≤ case¼ thσ targe⌠ shal∞ determinσ thσ larges⌠ ì contiguou≤ se⌠ oµ block≤ iε thσ scaε areß fo≥ reportinτ t∩ thσ initiator. ááSeσ 8.2.▓ fo≥ ß descriptioε oµ thσ RelAd≥ bi⌠ anΣ logica∞ blocδ addres≤ ì field. ááThσ paramete≥ lis⌠ lengtΦ specifie≤ thσ lengtΦ iε byte≤ oµ thσ paramete≥ ì lis⌠ tha⌠ shal∞ bσ transferreΣ durinτ thσ DAT┴ OU╘ phase« ┴ paramete≥ lis⌠ ì lengtΦ oµ zer∩ indicate≤ tha⌠ thσ numbe≥ oµ block≤ requesteΣ fielΣ ha≤ ß valuσ ì oµ one¼ anΣ thσ numbe≥ oµ block≤ t∩ scaε fielΣ ha≤ ß valuσ oµ zero« Thi≤ ì conditioε shal∞ no⌠ bσ considereΣ aε error« Thσ content≤ oµ thσ paramete≥ ì lis⌠ arσ specifieΣ iε Tablσ 1╡-6. áá┴ linδ bi⌠ oµ zer∩ indicate≤ ß noε-linkeΣ commanΣ anΣ iµ thσ scaε i≤ ì satisfied¼ thσ commanΣ shal∞ bσ terminateΣ witΦ ß CONDITIO╬ ME╘ status« ┴ ì REQUES╘ SENS┼ commanΣ caε theε bσ issueΣ t∩ determinσ thσ startinτ logica∞ ì blocδ addres≤ oµ thσ areß tha⌠ meet≤ thσ request« Iµ thσ scaε i≤ no⌠ ì satisfieΣ anΣ n∩ erro≥ occurs¼ thσ commanΣ shal∞ bσ terminateΣ witΦ GOO─ ì status. áá┴ linδ bi⌠ oµ onσ indicate≤ ß commanΣ i≤ linkeΣ t∩ thσ MEDIU═ SCA╬ commanΣ ì anΣ iµ thσ searcΦ i≤ satisfied¼ CONDITIO╬ ME╘ statu≤ i≤ returneΣ anΣ thσ nex⌠ ì commanΣ i≤ executed« Iµ thσ RelAd≥ bi⌠ iε thσ nex⌠ commanΣ i≤ one¼ thσ ì logica∞ blocδ addres≤ oµ thσ nex⌠ commanΣ i≤ useΣ a≤ ß displacemen⌠ froφ thσ ì logica∞ blocδ addres≤ a⌠ whicΦ thσ searcΦ wa≤ satisfied« Iµ ß linkeΣ scaε ì i≤ no⌠ satisfied¼ thσ commanΣ i≤ terminateΣ witΦ ß CHEC╦ CONDITIO╬ status« ┴ ì REQUES╘ SENS┼ commanΣ ma∙ theε bσ issued. .cp 15 áá┴ REQUES╘ SENS┼ commanΣ followinτ ß satisfieΣ MEDIU═ SCA╬ commanΣ shall: áá(1⌐ Returε ß sensσ ke∙ oµ EQUA╠ iµ thσ scaε wa≤ satisfieΣ b∙ ß contiguou≤ ì se⌠ oµ block≤ equa∞ iε sizσ t∩ thσ numbe≥ oµ block≤ requested« Iµ thσ scaε wa≤ ì satisfieΣ b∙ ß contiguou≤ se⌠ oµ block≤ no⌠ equa∞ iε sizσ t∩ thσ numbe≥ oµ ì block≤ requested¼ theε ß sensσ ke∙ oµ N╧ SENS┼ shal∞ bσ returned. áá(2⌐ Returε thσ valiΣ bi⌠ se⌠ t∩ one. áá(3⌐ Returε thσ logica∞ blocδ addres≤ oµ thσ firs⌠ logica∞ blocδ oµ thσ ì contiguou≤ se⌠ oµ block≤ tha⌠ satisfieΣ thσ scaε criteriß iε thσ informatioε ì bytes. áá(4⌐ Returε thσ numbe≥ oµ contiguou≤ logica∞ block≤ meetinτ thσ scaε criteriß ì iε thσ commanΣ specifiπ informatioε bytes. .lm 1 .cp 7 áá┴ REQUES╘ SENS┼ commanΣ followinτ aε unsatisfieΣ MEDIU═ SCA╬ commanΣ shall: áá(1⌐ Returε ß sensσ ke∙ oµ N╧ SENS┼ iµ n∩ error≤ occurreΣ durinτ thσ commanΣ ì execution. áá(2⌐ Returε thσ valiΣ bi⌠ se⌠ t∩ zero. .lm 1 .cp 25è.aw off .pm 0 Table 15-6: MEDIUM SCA╬ Parameter List ============================================================================== Bit | 7 | 6 | 5 | ┤ | 3 | 2 | 1 | 0 | Byte ⁿ | ⁿ ⁿ | | | | | ============================================================================== 0 | (MSB) | ------|--- ---| 1 | | ------|--- Numbe≥ oµ Block≤ Requested ---| 2 | | ------|--- ---| 3 | (LSB) | ------|----------------------------------------------------------------------| 4 | (MSB) | ------|--- ---| 5 | | ------|--- Numbe≥ oµ Block≤ t∩ Scaε ---| 6 | | ------|--- ---| 7 | (LSB) | ============================================================================== .aw on .pm 3 ááThσ numbe≥ oµ block≤ requesteΣ fielΣ specifie≤ thσ numbe≥ oµ block≤ tha⌠ ì mee⌠ thσ specifieΣ requirements« Thσ numbe≥ oµ block≤ requesteΣ field¼ iµ se⌠ ì t∩ zero¼ indicate≤ tha⌠ thσ scaε shal∞ no⌠ takσ place« Thi≤ shal∞ no⌠ bσ ì considereΣ aε erro≥ condition. ááThσ numbe≥ oµ block≤ t∩ scaε fielΣ specifie≤ thσ lengtΦ iε block≤ oµ thσ ì areß t∩ bσ scanneΣ oε thσ medium« Thσ numbe≥ oµ block≤ t∩ scaε field¼ iµ se⌠ ì t∩ zero¼ indicate≤ tha⌠ thσ scaε shal∞ continuσ fo≥ al∞ remaininτ block≤ oε ì thσ mediuφ o≥ unti∞ thσ scaε i≤ satisfied« Seσ 15.1.│ fo≥ ß descriptioε oµ ì erro≥ handling. .cp 35è.aw off .pm 0 15.2.4. READ(12) Command Table 15-7: READ(12) Command ============================================================================== Bit| 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | Byte | | | | | | | | | ============================================================================== 0 | Operation Code (A8h) | -----|-----------------------------------------------------------------------| 1 | Logical Unit Number | DPO | FUA | Reserved | RelAdr | -----|-----------------------------------------------------------------------| 2 | (MSB) | -----|--- ---| 3 | | -----|--- Logical Block Address ---| 4 | | -----|--- ---| 5 | (LSB) | -----|-----------------------------------------------------------------------| 6 | (MSB) | -----|--¡ ---| 7 ⁿ | -----|--- Transfer LengtΦ ---| 8 | | -----|--¡ ---| ╣ | (LSB) | -----|-----------------------------------------------------------------------| 10 | Reserved | -----|-----------------------------------------------------------------------| 11 | Control | ============================================================================== .aw on .pm 3 ááThσ READ(12⌐ commanΣ (Tablσ 1╡-7⌐ request≤ tha⌠ thσ targe⌠ transfe≥ datß t∩ ì thσ initiato≥ froφ thσ medium« Seσ thσ READ(10⌐ commanΣ (8.2.6⌐ fo≥ ß ì completσ descriptioε oµ thσ field≤ iε thi≤ command. .cp 35è.aw off .pm 0 15.2.5. READ DEFEC╘ DAT┴(12) Command Table 15-8: READ DEFEC╘ DAT┴(12) Command ============================================================================== Bit| 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | Byte | | | | | | | | | ============================================================================== 0 | Operation Code (B7h) | -----|-----------------------------------------------------------------------| 1 | Logical Unit Number | Plist | GList | Defec⌠ Lis⌠ Forma⌠ | -----|-----------------------------------------------------------------------| ▓ | Reserved | -----|-----------------------------------------------------------------------| │ | Reserved | -----|-----------------------------------------------------------------------| ┤ | Reserved | -----|-----------------------------------------------------------------------| ╡ | Reserved | -----|-----------------------------------------------------------------------| 6 | (MSB) | -----|--¡ ---| 7 ⁿ | -----|--- Allocatioε Length ---| 8 | | -----|--¡ ---| ╣ | (LSB) | -----|-----------------------------------------------------------------------| 10 | Reserved | -----|-----------------------------------------------------------------------| 11 | Control | ============================================================================== .aw on .pm 3 ááThσ REA─ DEFEC╘ DATA(12⌐ commanΣ (Tablσ 1╡-8⌐ request≤ tha⌠ thσ targe⌠ ì transfe≥ thσ mediuφ defec⌠ datß t∩ thσ initiator« Seσ thσ REA─ DEFEC╘ DATA(10⌐ ì commanΣ (8.2.8⌐ fo≥ ß descriptioε oµ thσ field≤ iε thi≤ command. ááThσ REA─ DEFEC╘ DATA(12⌐ lis⌠ heade≥ (Tablσ 1╡-9⌐ contain≤ aε eigh⌠ bytσ ì header¼ followeΣ b∙ zer∩ o≥ morσ defec⌠ descriptors. .cp 30è.aw off .pm 0 Table 15-9: REA─ DEFEC╘ DAT┴(12) LIS╘ HEADER ============================================================================== Bit| 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | Byte | | | | | | | | | ============================================================================== 0 | Reserved | -----|-----------------------------------------------------------------------| 1 | Reserved | PList | GList | Defect List Format | -----|-----------------------------------------------------------------------| 2 | Reserved | -----|-----------------------------------------------------------------------| 3 | Reserved | -----|-----------------------------------------------------------------------| 4 ⁿ (MSB) | -----|--¡ ---| 5 ⁿ | -----|--- Defect List Length | 6 | | -----|--¡ ---| 7 | (LSB) | ============================================================================== Defec⌠ Descriptors ============================================================================== ░-n ⁿ | ============================================================================== .aw on .pm 3 ááSeσ thσ descriptioε oµ thσ REA─ DEFEC╘ DAT┴ defec⌠ lis⌠ (Tablσ ╕-19⌐ fo≥ ß ì descriptioε oµ thσ field≤ iε thi≤ header. .cp 35è.aw off .pm 0 15.2.6. READ GENERATIO╬ Command Table 15-10: READ GENERATIO╬ Command ============================================================================== Bit| 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | Byte | | | | | | | | | ============================================================================== 0 | Operation Code (29h) | -----|-----------------------------------------------------------------------| 1 | Logical Unit Number | ReserveΣ | RelAdr | -----|-----------------------------------------------------------------------| 2 | (MSB) | -----|--- ---| 3 | | -----|--- Logical Block Address ---| 4 | | -----|--- ---| 5 | (LSB) | -----|-----------------------------------------------------------------------| 6 ⁿ Reserved | -----|-----------------------------------------------------------------------| 7 | Reserved | -----|-----------------------------------------------------------------------| 8 | Allocatioε Length | -----|-----------------------------------------------------------------------| 9 | Control | ============================================================================== .aw on .pm 3 ááThσ REA─ GENERATIO╬ commanΣ (Tablσ 1╡-10⌐ request≤ tha⌠ thσ targe⌠ transfe≥ ì t∩ thσ initiato≥ thσ maximuφ generatioε addres≤ fo≥ thσ logica∞ blocδ ì specified. ááSeσ 8.2.▓ fo≥ ß descriptioε oµ thσ RelAd≥ bi⌠ anΣ logica∞ blocδ addres≤ ì field. ááThσ REA─ GENERATIO╬ datß i≤ defineΣ iε Tablσ 1╡-11. .. DEFINE MAX GENERATION ljl .cp 15 .aw off .pm 0 Table 15-11: Maximuφ Generatioε Datß Block ============================================================================== Bit| 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | Byte | | | | | | | | | ============================================================================== 0 | (MSB) | -----|--¡ Maximuφ Generatioε Addres≤ ---| 1 | (LSB) | -----|-----------------------------------------------------------------------| 2 | Reserved | -----|-----------------------------------------------------------------------| │ | ReserveΣ | ============================================================================== .aw on .pm 3 èááThσ maximuφ generatioε addres≤ fielΣ define≤ thσ maximuφ generatioε addres≤ ì availablσ fo≥ thσ logica∞ blocδ addres≤ specified. .cp 35 .aw off .pm 0 15.2.7. READ UPDATE─ BLOCK(10) Command Table 15-12: READ UPDATE─ BLOCK(10) Command ============================================================================== Bit| 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | Byte | | | | | | | | | ============================================================================== 0 | Operation Code (2Dh) | -----|-----------------------------------------------------------------------| 1 | Logical Unit Number | DPO | FUA ⁿ ReserveΣ | RelAdr | -----|-----------------------------------------------------------------------| 2 | (MSB) | -----|--- ---| 3 | | -----|--- Logical Block Address ---| 4 | | -----|--- ---| 5 | (LSB) | -----|-----------------------------------------------------------------------| 6 ⁿ Lates⌠ ⁿ (MSB) | -----|------------ Generatioε Address | 7 | (LSB) | -----|-----------------------------------------------------------------------| 8 | ReserveΣ | -----|-----------------------------------------------------------------------| 9 | Control | ============================================================================== .aw on .pm 3 ááThσ REA─ UPDATE─ BLOCK(10⌐ commanΣ (Tablσ 1╡-12⌐ request≤ tha⌠ thσ targe⌠ ì transfe≥ datß t∩ thσ initiato≥ froφ thσ specifieΣ generatioε anΣ logica∞ ì block. ááSeσ 8.2.╢ fo≥ ß descriptioε oµ thσ cachσ contro∞ bit≤ (DP╧ anΣ FUA)« Seσ ì 8.2.▓ fo≥ ß descriptioε oµ thσ RelAd≥ bi⌠ anΣ logica∞ blocδ addres≤ field. ááOnσ blocδ oµ datß i≤ transferreΣ durinτ thσ DAT┴ I╬ phase. ááThσ lates⌠ bi⌠ determine≤ thσ meaninτ oµ thσ generatioε addres≤ field« ┴ ì lates⌠ bi⌠ oµ zer∩ indicate≤ tha⌠ thσ generatioε addres≤ i≤ specifieΣ relativσ ì t∩ thσ firs⌠ generatioε oµ thσ block╗ generatioε addres≤ zer∩ specifie≤ thσ ì firs⌠ generation« Increasinτ generatioε addresse≤ specif∙ late≥ generations. .cp 4 áá┴ lates⌠ bi⌠ oµ onσ indicate≤ tha⌠ thσ generatioε addres≤ i≤ specifieΣ ì relativσ t∩ thσ lates⌠ generatioε oµ thσ block╗ generatioε addres≤ zer∩ ì specifie≤ thσ mos⌠ recen⌠ generation« Increasinτ generatioε addresse≤ specif∙ ì earlie≥ generations. .cp 3 ááIµ thσ requesteΣ generatioε doe≤ no⌠ exist¼ thσ commanΣ shal∞ bσ terminateΣ ì witΦ CHEC╦ CONDITIO╬ status« Thσ sensσ ke∙ shal∞ bσ se⌠ t∩ BLAN╦ CHECK¼ anΣ ì thσ additiona∞ sensσ codσ shal∞ bσ se⌠ t∩ GENERATIO╬ DOE╙ NO╘ EXIST.è .cp 3 ááThi≤ commanΣ shal∞ bσ terminateΣ witΦ ß statu≤ oµ RESERVATIO╬ CONFLIC╘ iµ ì an∙ reservatioε acces≤ conflic⌠ (seσ 8.2.12⌐ exist≤ anΣ n∩ datß shal∞ bσ ì transferred. .cp 35 .aw off .pm 0 15.2.8. SEARC╚ DAT┴(12) Commands Table 15-13: SEARC╚ DAT┴(12) Commands ============================================================================== Bit| 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | Byte | | | | | | | | | ============================================================================== 0 | Operation Code (B0h¼ B1h¼ B2h) | -----|-----------------------------------------------------------------------| 1 | Logical Unit Number | Invert | ReserveΣ ⁿ SpnDat | RelAdr | -----|-----------------------------------------------------------------------| 2 | (MSB) | -----|--- ---| 3 | | -----|--- Logical Block Address ---| 4 | | -----|--- ---| 5 | (LSB) | -----|-----------------------------------------------------------------------| 6 | (MSB) | -----|--¡ ---| 7 ⁿ | -----|--- Transfer LengtΦ ---| 8 | | -----|--¡ ---| ╣ | (LSB) | -----|-----------------------------------------------------------------------| 10 | Reserved | -----|-----------------------------------------------------------------------| 11 | Control | ============================================================================== .aw on .pm 3 ááThσ SEARC╚ DATA(12⌐ command≤ (Tablσ 1╡-13⌐ searcΦ onσ o≥ morσ logica∞ block≤ ì fo≥ equalit∙ o≥ inequalit∙ t∩ ß datß pattern« Seσ thσ SEARC╚ DATA(10⌐ ì command≤ (8.2.14⌐ fo≥ ß descriptioε oµ thσ field≤ iε thi≤ command. .cp 35è.aw off .pm 0 15.2.9. SE╘ LIMIT╙(12) Command Table 15-14: SE╘ LIMIT╙(12) Command ============================================================================== Bit| 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | Byte | | | | | | | | | ============================================================================== 0 | Operation Code (B3h) | -----|-----------------------------------------------------------------------| 1 | Logical Unit Number | ReserveΣ ⁿ RdInh | WrInΦ | -----|-----------------------------------------------------------------------| 2 | (MSB) | -----|--- ---| 3 | | -----|--- Logical Block Address ---| 4 | | -----|--- ---| 5 | (LSB) | -----|-----------------------------------------------------------------------| 6 | (MSB) | -----|--¡ ---| 7 ⁿ | -----|--- Numbe≥ oµ Blocks ---| 8 | | -----|--¡ ---| ╣ | (LSB) | -----|-----------------------------------------------------------------------| 10 | Reserved | -----|-----------------------------------------------------------------------| 11 | Control | ============================================================================== .aw on .pm 3 ááThσ SE╘ LIMITS(12⌐ commanΣ (Tablσ 1╡-14⌐ define≤ thσ rangσ withiε whicΦ ì subsequen⌠ linkeΣ command≤ ma∙ operate« Seσ thσ SE╘ LIMITS(10⌐ commanΣ ì (8.2.16⌐ fo≥ ß descriptioε oµ thσ field≤ iε thi≤ command. .cp 35è.aw off .pm 0 15.2.10. UPDATE BLOCK Command Table 15-15: UPDATE BLOCK Command ============================================================================== Bit| 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | Byte | | | | | | | | | ============================================================================== 0 | Operation Code (3Dh) | -----|-----------------------------------------------------------------------| 1 | Logical Unit Number | ReserveΣ | RelAdr | -----|-----------------------------------------------------------------------| 2 | (MSB) | -----|--- ---| 3 | | -----|--- Logical Block Address ---| 4 | | -----|--- ---| 5 | (LSB) | -----|-----------------------------------------------------------------------| 6 | Reserved | -----|-----------------------------------------------------------------------| 7 | Reserved | -----|--¡--------------------------------------------------------------------| 8 | Reserved | -----|-----------------------------------------------------------------------| 9 | Control | ============================================================================== .aw on .pm 3 ááThσ UPDAT┼ BLOC╦ commanΣ (Tablσ 1╡-15⌐ request≤ tha⌠ thσ targe⌠ logicall∙ ì replacσ datß oε thσ mediuφ witΦ thσ datß sen⌠ durinτ thσ DAT┴ OU╘ phase. ááSeσ 8.2.▓ fo≥ ß descriptioε oµ thσ RelAd≥ bi⌠ anΣ logica∞ blocδ addres≤ ì field. ááOnσ blocδ oµ datß i≤ transferreΣ durinτ thσ DAT┴ OU╘ phase« .lm 3 ááIMPLEMENTOR╙ NOTE║ Seσ thσ MOD┼ Parameter≤ (15.3⌐ fo≥ ß descriptioε oµ thσ ì áábehavio≥ oµ thσ UPDAT┼ BLOC╦ commanΣ relativσ t∩ thσ enablσ blanδ checδ ì áá(EBC⌐ bit. .lm 1 ááThi≤ standarΣ doe≤ no⌠ definσ thσ resul⌠ oµ ß WRIT┼ commanΣ issueΣ t∩ ß ì blocδ previousl∙ updateΣ b∙ aε UPDAT┼ BLOC╦ commanΣ wheε blanδ checkinτ i≤ ì disabled« ááIMPLEMENTOR╙ NOTE║ I⌠ i≤ recommendeΣ tha⌠ thσ targe⌠ inhibi⌠ thi≤ behavior. .cp 6 áá┴ logica∞ blocδ ma∙ bσ updateΣ unti∞ thσ alternatσ blocδ areß i≤ exhausted« ì Thσ alternatσ block≤ useΣ fo≥ thσ updatσ operatioε shal∞ no⌠ bσ reporteΣ iε ì thσ REA─ CAPACIT┘ data« Iµ thσ alternatσ blocδ areß i≤ exhausteΣ thσ commanΣ ì shal∞ bσ terminateΣ witΦ CHEC╦ CONDITIO╬ anΣ thσ sensσ ke∙ shal∞ bσ se⌠ t∩ ì MEDIU═ ERROR¼ anΣ thσ additiona∞ sensσ codσ se⌠ t∩ N╧ DEFEC╘ SPAR┼ LOCATIO╬ ì AVAILABLE. è.cp 5 ááIµ thσ repor⌠ updateΣ blocδ reaΣ paramete≥ specifie≤ postinτ oµ recovereΣ ì error≤ fo≥ ß reaΣ operatioε oµ ß logica∞ blocδ tha⌠ ha≤ haΣ ß successfu∞ ì updatσ operatioε performeΣ occur≤ thσ commanΣ shal∞ terminatσ witΦ ß CHEC╦ ì CONDITIO╬ status« Thσ sensσ ke∙ shal∞ bσ se⌠ t∩ RECOVERE─ ERRO╥ anΣ thσ ì additiona∞ sensσ codσ se⌠ t∩ UPDATE─ BLOC╦ READ. .cp 35 .aw off .pm 0 15.2.11. VERIFY(10) Command Table 15-16: VERIFY Command ============================================================================== Bit| 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | Byte | | | | | | | | | ============================================================================== 0 | Operation Code (2Fh) | -----|-----------------------------------------------------------------------| 1 | Logical Unit Number | DPO |Reserved| BlkVfy | BytChk | RelAdr | -----|-----------------------------------------------------------------------| 2 | (MSB) | -----|--- ---| 3 | | -----|--- Logical Block Address ---| 4 | | -----|--- ---| 5 | (LSB) | -----|-----------------------------------------------------------------------| 6 | Reserved | -----|-----------------------------------------------------------------------| 7 ⁿ (MSB) | -----|--- Verification LengtΦ | 8 | (LSB) | -----|-----------------------------------------------------------------------| 9 | Control | ============================================================================== .aw on .pm 3 ááThσ VERIF┘ commanΣ (Tablσ 1╡-16⌐ request≤ tha⌠ thσ targe⌠ verif∙ thσ datß oε ì thσ medium. ááIµ thσ MOD┼ SELEC╘ commanΣ i≤ implemented¼ anΣ thσ Verif∙ Erro≥ Recover∙ ì Parameter≤ pagσ i≤ als∩ implemented¼ theε thσ curren⌠ setting≤ iε tha⌠ pagσ ì definσ thσ verificatioε criteria« Iµ thσ Verif∙ Erro≥ Recover∙ Parameter≤ pagσ ì i≤ no⌠ implemented¼ theε thσ verificatioε criteriß i≤ vendo≥ unique. .cp 8 áá┴ bytσ checδ (BytChk⌐ bi⌠ oµ zer∩ cause≤ ß mediuφ verificatioε t∩ bσ ì performeΣ witΦ n∩ datß comparison« ┴ BytChδ bi⌠ oµ onσ cause≤ ß bytσ-b∙-bytσ ì comparσ oµ thσ datß writteε oε thσ mediuφ anΣ thσ datß transferreΣ froφ thσ ì initiator« Thσ datß shal∞ bσ transferreΣ a≤ i⌠ woulΣ bσ fo≥ ß WRIT┼ command« ì Iµ thσ comparσ i≤ unsuccessful¼ fo≥ an∙ reason¼ thσ targe⌠ shal∞ returε CHEC╦ ì CONDITIO╬ statu≤ anΣ thσ sensσ ke∙ shal∞ bσ se⌠ t∩ MISCOMPARE. .cp 2 áá┴ blanδ verif∙ (BlkVfy⌐ bi⌠ oµ onσ cause≤ ß verificatioε tha⌠ thσ block≤ arσ ì blank« .cp 4èááIµ thσ BytChδ i≤ onσ wheε thσ BlkVf∙ bi⌠ i≤ one¼ thi≤ shal∞ bσ considereΣ aε ì error« Thσ targe⌠ shal∞ returε CHEC╦ CONDITIO╬ statu≤ anΣ thσ sensσ ke∙ shal∞ ì bσ se⌠ t∩ ILLEGA╠ REQUEST¼ anΣ thσ additiona∞ sensσ codσ se⌠ t∩ INVALI─ FIEL─ ì I╬ CDB. .cp 2 ááSeσ 8.2.╢ fo≥ ß descriptioε oµ thσ cachσ contro∞ bit≤ (DPO)« Seσ 8.2.▓ fo≥ ì ß descriptioε oµ thσ RelAd≥ bi⌠ anΣ logica∞ blocδ addres≤ field. .cp 5 ááThσ verificatioε lengtΦ specifie≤ thσ numbe≥ oµ contiguou≤ logica∞ block≤ oµ ì datß o≥ blank≤ tha⌠ shal∞ bσ verified« ┴ verificatioε lengtΦ oµ zer∩ ì indicate≤ tha⌠ n∩ logica∞ block≤ shal∞ bσ verified« Thi≤ conditioε shal∞ no⌠ ì bσ considereΣ a≤ aε error« An∙ othe≥ valuσ indicate≤ thσ numbe≥ oµ logica∞ ì block≤ tha⌠ shal∞ bσ verified. .cp 35 .aw off .pm 0 15.2.12. VERIF┘(12) Command Table 15-17: VERIFY(12) Command ============================================================================== Bit| 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | Byte | | | | | | | | | ============================================================================== 0 | Operation Code (AFh) | -----|-----------------------------------------------------------------------| 1 | Logical Unit Number | DPO |Reserved| BlkVfy | BytChk | RelAdr | -----|-----------------------------------------------------------------------| 2 | (MSB) | -----|--- ---| 3 | | -----|--- Logical Block Address ---| 4 | | -----|--- ---| 5 | (LSB) | -----|-----------------------------------------------------------------------| 6 | (MSB) | -----|--¡ ---| 7 ⁿ | -----|--- Verificatioε Length ---| 8 | | -----|--¡ ---| ╣ | (LSB) | -----|-----------------------------------------------------------------------| 10 | Reserved | -----|-----------------------------------------------------------------------| 11 | Control | ============================================================================== .aw on .pm 3 ááThσ VERIFY(12⌐ commanΣ (Tablσ 1╡-17⌐ request≤ tha⌠ thσ targe⌠ verif∙ thσ ì datß oε thσ medium« Seσ thσ VERIFY(10⌐ commanΣ (15.2.11⌐ fo≥ ß descriptioε oµ ì thσ field≤ iε thi≤ command. .cp 35è.aw off .pm 0 15.2.13. WRITE(10) Command Table 15-18: WRITE(10) Command ============================================================================== Bit| 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | Byte | | | | | | | | | ============================================================================== 0 | Operation Code (2Ah) | -----|-----------------------------------------------------------------------| 1 | Logical Unit Number | DPO | FUA ⁿ EB╨ |Reserved| RelAdr | -----|-----------------------------------------------------------------------| 2 | (MSB) | -----|--- ---| 3 | | -----|--- Logical Block Address ---| 4 | | -----|--- ---| 5 | (LSB) | -----|-----------------------------------------------------------------------| 6 | Reserved | -----|-----------------------------------------------------------------------| 7 ⁿ (MSB) | -----|--- Transfer LengtΦ | 8 | (LSB) | -----|-----------------------------------------------------------------------| 9 | Control | ============================================================================== .aw on .pm 3 ááThσ WRITE(10⌐ commanΣ (Tablσ 1╡-18⌐ request≤ tha⌠ thσ targe⌠ writσ thσ datß ì transferreΣ froφ thσ initiato≥ t∩ thσ medium. ááAε erasσ b∙-pas≤ (EBP⌐ bi⌠ oµ zer∩ indicate≤ tha⌠ thσ devicσ wil∞ defaul⌠ t∩ ì thσ norma∞ writσ operation« Aε EB╨ bi⌠ oµ onσ indicate≤ tha⌠ thσ targe⌠ i≤ ì alloweΣ t∩ b∙-pas≤ thσ erasσ operatioε prio≥ t∩ writinτ thσ data« Wheε ì accessinτ writσ-oncσ media¼ thσ EB╨ bi⌠ shal∞ bσ considereΣ reserved. ááSeσ 8.2.╢ fo≥ ß descriptioε oµ thσ cachσ contro∞ bit≤ (DP╧ anΣ FUA)« Seσ ì 8.2.▓ fo≥ ß descriptioε oµ thσ RelAd≥ bi⌠ anΣ logica∞ blocδ addres≤ field. ááThσ transfe≥ lengtΦ specifie≤ thσ numbe≥ oµ contiguou≤ logica∞ block≤ oµ ì datß tha⌠ shal∞ bσ transferred« ┴ transfe≥ lengtΦ oµ zer∩ indicate≤ tha⌠ n∩ ì datß shal∞ bσ transferred« Thi≤ conditioε shal∞ no⌠ bσ considereΣ a≤ aε erro≥ ì anΣ n∩ datß shal∞ bσ written« An∙ othe≥ valuσ indicate≤ thσ numbe≥ oµ logica∞ ì block≤ tha⌠ shal∞ bσ transferred. .cp3 ááThi≤ commanΣ shal∞ bσ terminateΣ witΦ ß statu≤ oµ RESERVATIO╬ CONFLIC╘ iµ ì an∙ reservatioε acces≤ conflic⌠ (seσ 8.2.12⌐ exist≤ anΣ n∩ datß shal∞ bσ ì written. .cp 35è.aw off .pm 0 15.2.14. WRITE(12) Command Table 15-19: WRITE(12) Command ============================================================================== Bit| 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | Byte | | | | | | | | | ============================================================================== 0 | Operation Code (AAh) | -----|-----------------------------------------------------------------------| 1 | Logical Unit Number | DPO | FUA ⁿ EB╨ |Reserved| RelAdr | -----|-----------------------------------------------------------------------| 2 | (MSB) | -----|--- ---| 3 | | -----|--- Logical Block Address ---| 4 | | -----|--- ---| 5 | (LSB) | -----|-----------------------------------------------------------------------| 6 | (MSB) | -----|--¡ ---| 7 ⁿ | -----|--- Transfer LengtΦ ---| 8 | | -----|--¡ ---| ╣ | (LSB) | -----|-----------------------------------------------------------------------| 10 | Reserved | -----|-----------------------------------------------------------------------| 11 | Control | ============================================================================== .aw on .pm 3 ááThσ WRITE(12⌐ commanΣ (Tablσ 1╡-19⌐ request≤ tha⌠ thσ targe⌠ writσ thσ datß ì transferreΣ froφ thσ initiato≥ t∩ thσ medium« Seσ thσ WRITE(10⌐ commanΣ ì (15.2.13⌐ fo≥ ß descriptioε oµ thσ field≤ iε thi≤ command« .cp 35è.aw off .pm 0 15.2.15. WRITE AND VERIFY(10) Command Table 15-20: WRITE AND VERIFY(10) Command ============================================================================== Bit| 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | Byte | | | | | | | | | ============================================================================== 0 | Operation Code (2Eh) | ¡¡¡¡-ⁿ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡-| ▒ ⁿ Logica∞ Uni⌠ Numbe≥ ⁿ DP╧ |╥eservedⁿ EB╨ ⁿ BytChδ ⁿ RelAd≥ | -----|-----------------------------------------------------------------------| 2 | (MSB) | -----|--- ---| 3 | | -----|--- Logical Block Address ---| 4 | | -----|--- ---| 5 | (LSB) | -----|-----------------------------------------------------------------------| 6 | Reserved | -----|-----------------------------------------------------------------------| 7 ⁿ (MSB) | -----|--- Transfer LengtΦ | 8 | (LSB) | -----|-----------------------------------------------------------------------| 9 | Control | ============================================================================== .aw on .pm 3 ááThσ WRIT┼ AN─ VERIFY(10⌐ commanΣ (Tablσ 1╡-20⌐ request≤ tha⌠ thσ targe⌠ ì writσ thσ datß transferreΣ froφ thσ initiato≥ t∩ thσ mediuφ anΣ theε verif∙ ì tha⌠ thσ datß i≤ correctl∙ written. ááIµ thσ MOD┼ SELEC╘ commanΣ i≤ implemented¼ anΣ thσ Verif∙ Erro≥ Recover∙ ì Parameter≤ pagσ i≤ als∩ implemented¼ theε thσ curren⌠ setting≤ iε tha⌠ pagσ ì definσ thσ verificatioε criteria« Iµ thσ Verif∙ Erro≥ Recover∙ Parameter≤ pagσ ì i≤ no⌠ implemented¼ theε thσ verificatioε criteriß i≤ vendo≥ unique. áá┴ bytσ checδ (BytChk⌐ bi⌠ oµ zer∩ cause≤ ß mediuφ verificatioε t∩ bσ ì performeΣ witΦ n∩ datß comparison« ┴ BytChδ bi⌠ oµ onσ cause≤ ß bytσ-b∙-bytσ ì comparσ oµ thσ datß writteε oε thσ mediuφ anΣ thσ datß transferreΣ froφ thσ ì initiator« Thσ datß shal∞ bσ transferreΣ a≤ i⌠ woulΣ bσ fo≥ ß WRIT┼ command« ì Iµ thσ comparσ i≤ unsuccessful¼ fo≥ an∙ reason¼ thσ targe⌠ shal∞ returε CHEC╦ ì CONDITIO╬ statu≤ anΣ thσ sensσ ke∙ shal∞ bσ se⌠ t∩ MISCOMPARE. ááAε erasσ b∙-pas≤ (EBP⌐ bi⌠ oµ zer∩ indicate≤ tha⌠ thσ devicσ wil∞ defaul⌠ t∩ ì thσ norma∞ writσ operation« Aε EB╨ bi⌠ oµ onσ indicate≤ tha⌠ thσ targe⌠ i≤ ì alloweΣ t∩ b∙-pas≤ thσ erasσ operatioε prio≥ t∩ writinτ thσ data« Wheε ì accessinτ writσ-oncσ media¼ thσ EB╨ bi⌠ shal∞ bσ considereΣ reserved. .cp 2 ááSeσ 8.2.╢ fo≥ ß descriptioε oµ thσ cachσ contro∞ bit≤ (DPO)« Seσ 8.2.▓ fo≥ ì ß descriptioε oµ thσ RelAd≥ bi⌠ anΣ logica∞ blocδ addres≤ field. .cp 5èááThσ transfe≥ lengtΦ specifie≤ thσ numbe≥ oµ contiguou≤ logica∞ block≤ oµ ì datß tha⌠ shal∞ bσ transferred« ┴ transfe≥ lengtΦ oµ zer∩ indicate≤ tha⌠ n∩ ì logica∞ block≤ shal∞ bσ transferred« Thi≤ conditioε shal∞ no⌠ bσ considereΣ ì a≤ aε erro≥ anΣ n∩ datß shal∞ bσ written« An∙ othe≥ valuσ indicate≤ thσ ì numbe≥ oµ logica∞ block≤ tha⌠ shal∞ bσ transferred. .cp 35 .aw off .pm 0 15.2.16. WRITE AND VERIFY(12) Command Table 15-21: WRITE AND VERIFY(12) Command ============================================================================== Bit| 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | Byte | | | | | | | | | ============================================================================== 0 | Operation Code (AEh) | ¡¡¡¡-ⁿ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡-| ▒ ⁿ Logica∞ Uni⌠ Numbe≥ ⁿ DP╧ |╥eservedⁿ EBP ⁿ BytChδ ⁿ RelAd≥ | -----|-----------------------------------------------------------------------| 2 | (MSB) | -----|--- ---| 3 | | -----|--- Logical Block Address ---| 4 | | -----|--- ---| 5 | (LSB) | -----|-----------------------------------------------------------------------| 6 | (MSB) | -----|--¡ ---| 7 ⁿ | -----|--- Transfer LengtΦ ---| 8 | | -----|--¡ ---| ╣ | (LSB) | -----|-----------------------------------------------------------------------| 10 | Reserved | -----|-----------------------------------------------------------------------| 11 | Control | ============================================================================== .aw on .pm 3 ááThσ WRIT┼ AN─ VERIFY(12⌐ commanΣ (Tablσ 1╡-21⌐ request≤ tha⌠ thσ targe⌠ ì writσ thσ datß transferreΣ froφ thσ initiato≥ t∩ thσ mediuφ anΣ theε verif∙ ì tha⌠ thσ datß i≤ correctl∙ written« Seσ thσ WRIT┼ AN─ VERIFY(10⌐ commanΣ ì (15.2.15⌐ fo≥ ß descriptioε oµ thσ bit≤ iε thi≤ command. .cp 20è.aw off .pm 0 15.3. Parameter≤ fo≥ Optica∞ Memor∙ Devices .aw on .pm 3 .cp 10 .aw off .pm 0 15.3.1. Diagnostic Paramete≥s .aw on .pm 3 ááThi≤ sectioε define≤ thσ descriptor≤ anΣ page≤ fo≥ diagnostiπ parameter≤ ì useΣ witΦ optica∞ memor∙ devices« ááThσ diagnostiπ pagσ code≤ fo≥ optica∞ memor∙ device≤ arσ defineΣ iε Tablσ ì 1╡-22. .aw off .pm 0 .cp 15 Table 15-22: Diagnostiπ Page Codes ============================================================================== Page Code Description Section ------------------------------------------------------------------------------ ááá00h Lis⌠ oµ SupporteΣ Parameters Pagσ 7.3.1.1 01Φ ¡ 3Fh ReserveΣ (fo≥ al∞ devicσ typσ page≤) ááá40h Translatσ Addres≤ Pagσ 8.3.1 41Φ ¡ 7Fh Reservedì 80Φ ¡ FFh Vendo≥ specifiπ pages ============================================================================== .aw on .pm 3 .lm 1 .cp 5 .aw off .pm 0 15.3.2. Log Paramete≥s .aw on .pm 3 ááThi≤ sectioε define≤ thσ descriptor≤ anΣ page≤ fo≥ loτ parameter≤ useΣ witΦ ì optica∞ memor∙ devices« ááThσ loτ pagσ code≤ fo≥ optica∞ memor∙ device≤ arσ defineΣ iε Tablσ 1╡-23. .aw off .pm 0 .cp 15 Table 15-23: Log Page Codes ============================================================================== Page Code Description Section ------------------------------------------------------------------------------ ááá01h Buffer Over-Run/Under-Run Page 7.3.2.1 ááá03h Erro≥ Counte≥ Pagσ (Read) Page 7.3.2.2 ááá05h Erro≥ Counte≥ Pagσ (Verify⌐ Page 7.3.2.2 ááá02h Erro≥ Counte≥ Pagσ (Write) Page 7.3.2.2 ááá07h Last n Error Events Page 7.3.2.3 ááá00h List of Supported Parameter≤ Page 7.3.2.5 ááá06h Non-Media Error Page 7.3.2.4 04Φ Reserved 08h - 2Fh Reserved 30h - 3Eh Vendo≥ Specific ááá3Fh Reserved ============================================================================== .aw on .pm 3 .lm 1 .cp 10è.aw off .pm 0 15.3.3. Mode Paramete≥s .aw on .pm 3 ááThi≤ sectioε define≤ thσ descriptor≤ anΣ page≤ fo≥ modσ parameter≤ useΣ witΦ ì optica∞ memor∙ devices« ááThσ modσ paramete≥ list¼ includinτ thσ modσ paramete≥ heade≥ anΣ modσ blocδ ì descripto≥ arσ defineΣ iε 7.3.3. ááThσ mediuφ-typσ codσ fielΣ i≤ containeΣ iε thσ modσ paramete≥ heade≥ (seσ ì Tablσ ╖-6▒ anΣ ╖-62)« Tablσ 1╡-2┤ define≤ thσ mediuφ-typσ codσ value≤ useΣ ì fo≥ optica∞ memor∙ devices. .aw off .pm 0 Table 15-24: Optical Memory Medium-Type Codes ============================================================================== Code Value Medium Type ---------- ------------------------------------------------------------------ 00h Default (only one medium type supported) 01h Optical Read Only medium 02h Optica∞ Write Once medium 03h Optical Reversible or Erasable medium 04h Combinatioε oµ Read only and Write Once mediuφ 05h Combinatioε oµ Read only and Reversiblσ o≥ Erasable mediuφ 06h Combinatioε oµ Write Once anΣ Reversiblσ or Erasable mediuφ 07h - 7Fh RESERVED 80h - FFh Vendor unique ============================================================================== .aw on .pm 3 ááThσ devicσ specifiπ paramete≥ fielΣ i≤ containeΣ iε thσ modσ paramete≥ ì heade≥ (seσ Tablσ ╖-6▒ anΣ ╖-62)« Tablσ 1╡-2╡ define≤ thσ devicσ specifiπ ì paramete≥ value≤ useΣ fo≥ optica∞ memor∙ devices. .cp 15 .aw off .pm 0 Table 15-25: Optica∞ Memor∙ Devicσ Specifiπ Paramete≥ ============================================================================== Bit| 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | ============================================================================== | WP | Reserved | Cache | Reserved | EBC | ============================================================================== .aw on .pm 3 ááThσ W╨ bi⌠ i≤ reserveΣ fo≥ thσ MOD┼ SELEC╘ command. ááFo≥ thσ MOD┼ SENS┼ command¼ ß writσ protecteΣ (WP⌐ bi⌠ oµ zer∩ indicate≤ ì tha⌠ thσ mediuφ i≤ writσ enabled« ┴ W╨ bi⌠ oµ onσ indicate≤ tha⌠ thσ mediuφ ì i≤ writσ protected« Fo≥ reaΣ-onl∙ mediß thσ W╨ bi⌠ i≤ reserved. ááThσ cachσ bi⌠ i≤ reserveΣ fo≥ thσ MOD┼ SELEC╘ command. .cp 3 ááFo≥ thσ MOD┼ SENS┼ command¼ ß cachσ bi⌠ oµ zer∩ indicate≤ tha⌠ thσ targe⌠ ì doe≤ no⌠ contaiε ß cachσ memory« ┴ cachσ bi⌠ oµ onσ indicate≤ tha⌠ thσ targe⌠ ì contain≤ ß cachσ memor∙ anΣ support≤ thσ cachσ contro∞ bit≤ (seσ 8.2.6). .cp 8èááFo≥ thσ MOD┼ SELEC╘ command¼ aε enablσ blanδ checδ (EBC⌐ bi⌠ oµ zer∩ advise≤ ì thσ targe⌠ t∩ disablσ thσ blanδ checkinτ operatioε oµ thσ mediuφ durinτ writσ ì operation≤ o≥ durinτ aε UPDAT┼ BLOC╦ command« Aε EB├ bi⌠ oµ onσ enable≤ blanδ ì checking« Iµ ß noε-blanδ blocδ i≤ founΣ durinτ ß writσ operation¼ thσ commanΣ ì shal∞ bσ terminateΣ witΦ ß CHEC╦ CONDITIO╬ statu≤ anΣ thσ sensσ ke∙ shal∞ bσ ì se⌠ t∩ BLAN╦ CHECK« Iµ ß blanδ blocδ i≤ founΣ durinτ aε UPDAT┼ BLOC╦ command¼ ì thσ commanΣ shal∞ bσ terminateΣ witΦ ß CHEC╦ CONDITIO╬ statu≤ anΣ thσ sensσ ì ke∙ shal∞ bσ se⌠ t∩ BLAN╦ CHECK« Fo≥ reaΣ-onl∙ mediß thσ EB├ bi⌠ i≤ reserved. .cp 4 ááFo≥ thσ MOD┼ SENS┼ command¼ aε enablσ blanδ checδ (EBC⌐ bi⌠ oµ zer∩ ì indicate≤ tha⌠ blanδ checkinτ oµ thσ mediuφ durinτ writσ operation≤ i≤ ì disabled« Aε EB├ bi⌠ oµ onσ indicate≤ tha⌠ blanδ checkinτ durinτ writσ anΣ ì updatσ operation≤ i≤ enabled« Fo≥ reaΣ-onl∙ mediß thσ EB├ bi⌠ i≤ reserved. .cp 50èááThσ densit∙ codσ fielΣ i≤ containeΣ iε thσ modσ paramete≥ blocδ descripto≥ ì (seσ Tablσ ╖-63)« Tablσ 1╡-2╢ define≤ thσ densit∙ codσ value≤ useΣ fo≥ ì optica∞ memor∙ devices. .aw off .pm 0 Table 15-26: Optical Memory Densit∙ Codes ============================================================================== Densit∙ Optica∞ Media Code ------¡ --------------------------------------------------------------------- 00h Default densit∙ (currently mounted density) Diameter Secto≥ Referencσ mm (inch) Type Sizσ Track≤ Sides Serv∩ StandarΣ Note ---------- ---¡ -------- ------ ----- ----¡ ---------¡ ---- 01h 8╢ (3.5) R/W 512/1024 1250░ ▒ 660-─ 1 02h 8╣ (3.5⌐ R/W 512/102┤ 1250░ ▓ 581-─ 1 03h 13░ (5.25⌐ R/W 512/102┤ 1875░ ▓ CS 607-╔ 1 04h 13░ (5.25⌐ W-O 512/1024 30000 2 SS 655-D 1,2 05h 13░ (5.25) W-O 512/1024 20000 2 SS 659-D 1,3 06h 13░ (5.25) W-O 512/102┤ 18750 2 CS 457-D 1 07h 20░ (8.0) 407-D 1,4 08h 30░ (12.0) 1024 ▓ 408-D 1,4 09h 35╢ (14.0⌐ 102┤ 5635░ ▓ 456-─ 1 80h - FFh Vendor unique All others Reserved ============================================================================== Key: Type Servo ----------------------------¡ ------------------------------ R/W Erasable CS Continuou≤ Servo W-╧ Writσ Once SS SampleΣ Servo R/O ReaΣ Only .aw on .pm 3 .lm 3 ááNOTES: áá(1⌐ Thσ referencσ standarΣ refer≤ t∩ aε ANS╔ X3B1▒ projec⌠ unde≥ ì áádevelopment« Thσ projec⌠ ma∙ havσ severa∞ document≤ describinτ differen⌠ ì ááaspect≤ oµ thσ media« Pleasσ contac⌠ thσ Secretaria⌠ fo≥ curren⌠ informatioε ì ááoε statu≤ anΣ availability. áá(2⌐ R┌ modulation. áá(3⌐ 4/1╡ modulation. áá(4⌐ Thi≤ projec⌠ i≤ no⌠ presentl∙ active. .lm 1 .cp 20èááThσ modσ pagσ code≤ fo≥ optica∞ memor∙ device≤ arσ showε iε Tablσ 1╡-27. .cp 25 .aw off .pm 0 Table 15-27: Modσ Page Codes ============================================================================== Page Code Description Section ------------------------------------------------------------------------------ ááá08h Cachinτ Page 8.3.3.1 ááá0Ah Contro∞ Mode Page 7.5.3.1 ááá02h Disconnect-Reconnect Page 7.3.3.2 ááá0Bh Medium Types Supported Page 8.3.3.4 ááá06h Optica∞ Memor∙ Page 15.3.3.1 ááá0╣h Peripheral Device Page 7.3.3.3 ááá01h Read-Writσ Error Recovery Page 8.3.3.6 ááá07h Verif∙ Erro≥ Recovery Page 8.3.3.8 03Φ ¡ 05h Reserved 0Ch - 1Fh Reserved ááá3Fh Returεs al∞ page≤ (valiΣ onl∙ fo≥ thσ MODE SENSE commanΣ) ááá00h Vendor specific (does not require page format) 20h - 3Eh Vendo≥ specifiπ ============================================================================== .aw on .pm 3 .lm 1 .cp 5 .aw off .pm 0 15.3.3.1. Optica∞ Memor∙ Page Table 15-28: Optica∞ Memor∙ Page ============================================================================== Bitⁿ ╖ ⁿ ╢ ⁿ ╡ ⁿ ┤ ⁿ │ ⁿ ▓ ⁿ ▒ ⁿ ░ | Bytσ ⁿ ⁿ ⁿ ⁿ ⁿ ⁿ ⁿ ⁿ | ============================================================================== ░ ⁿ P╙ |Reservedⁿ Pagσ Codσ (06h⌐ | ¡¡¡¡-ⁿ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡-| ▒ ⁿ Paramete≥ LengtΦ (02h⌐ | ¡¡¡¡-ⁿ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡-| ▓ ⁿ ReserveΣ ⁿ RUB╥ | ¡¡¡¡-ⁿ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡-| │ ⁿ ReserveΣ | ============================================================================== .aw on .pm 3 ááThσ optica∞ memor∙ pagσ (Tablσ 1╡-28⌐ define≤ parameter≤ fo≥ contro∞ oµ ì optica∞ memor∙ devices. .cp 4 ááThσ parameter≤ savablσ (PS⌐ bi⌠ i≤ onl∙ useΣ witΦ thσ MOD┼ SENS┼ command« ì Thi≤ bi⌠ i≤ reserveΣ witΦ thσ MOD┼ SELEC╘ command« ┴ P╙ bi⌠ oµ onσ indicate≤ ì tha⌠ thσ targe⌠ i≤ capablσ oµ savinτ thσ pagσ iε ß noε-volatilσ vendo≥-ì specifiπ location. .cp 8èáá┴ repor⌠ updateΣ blocδ reaΣ (RUBR⌐ bi⌠ oµ zer∩ indicate≤ thσ targe⌠ shal∞ ì no⌠ repor⌠ aε erro≥ wheε ß commanΣ perform≤ ß successfu∞ reaΣ oµ ß blocδ tha⌠ ì ha≤ beeε updated« ┴ RUB╥ bi⌠ oµ onσ indicate≤ thσ targe⌠ shal∞ terminatσ ß ì commanΣ tha⌠ perform≤ ß reaΣ oµ ß blocδ tha⌠ ha≤ beeε updateΣ witΦ CHEC╦ ì CONDITIO╬ status¼ thσ sensσ ke∙ se⌠ t∩ RECOVERE─ ERROR¼ thσ additiona∞ sensσ ì codσ se⌠ t∩ UPDATE─ BLOC╦ READ¼ anΣ thσ datß shal∞ bσ transferreΣ t∩ thσ ì initiator« Thσ defaul⌠ statσ oµ thσ RUB╥ bi⌠ fo≥ writσ-oncσ device≤ (a≤ ì reporteΣ iε thσ INQUIR┘ command⌐ shal∞ bσ one. .cp 35 .aw off .pm 0 15.4. Glossary fo≥ Optica∞ Memor∙ Devices .aw on .pm 0 blank.é Thσ logica∞ blocδ contain≤ n∩ informatioε detectablσ b∙ thσ target¼ o≥ ì i≤ writteε witΦ ß patterε tha⌠ appear≤ t∩ thσ targe⌠ a≤ n∩ datß present« Thσ ì logica∞ blocδ i≤ considereΣ read∙ fo≥ ß writσ operation. generation.é Indicate≤ ß relativσ revisioε leve∞ oµ ß logica∞ blocδ tha⌠ ha≤ ì beeε updateΣ viß thσ UPDAT┼ BLOC╦ command« ┴ logica∞ blocδ tha⌠ ha≤ neve≥ ì beeε updateΣ ha≤ onl∙ onσ generatioε associateΣ witΦ it. reaΣ-onl∙ medium.é Thi≤ i≤ mediuφ tha⌠ ma∙ no⌠ bσ writteε b∙ thσ initiator« ì Thσ mediß contain≤ datß prepareΣ iε ß manne≥ no⌠ defineΣ b∙ thi≤ standard. update.é T∩ writσ ne≈ datß t∩ ß logica∞ blocδ withou⌠ destroyinτ thσ previou≤ ì data« Afte≥ ß blocδ ha≤ beeε updated¼ ß norma∞ reaΣ return≤ thσ mos⌠ recen⌠ ì generatioε oµ thσ data« Earlie≥ generation≤ arσ stil∞ availablσ afte≥ thσ ì update. writσ-oncσ medium.é Thi≤ i≤ mediuφ tha⌠ ma∙ bσ writteε onl∙ oncσ b∙ thσ ì initiator« Logica∞ block≤ oε writσ-oncσ mediß tha⌠ havσ no⌠ beeε writteε arσ ì considereΣ blank« Logica∞ block≤ oε writσ-oncσ mediß tha⌠ havσ beeε writteε ì ma∙ no⌠ bσ writteε again« .pm 3 ..******************************* end of section ***************************** .paè