SCSI Primary Commands - 2.pdf

T10/1236-D Revision 20 18 July 2001Table 3 — Typical CDB for 12-byte commandsBitByte7 6 5 4 3 2 1 00 OPERATION CODE1 Reserved SERVICE ACTION (if required)2 (MSB)3LOGICAL BLOCK ADDRESS (if required)45 (LSB)6 (MSB)7TRANSFER LENGTH (if required)PARAMETER LIST LENGTH (if required)8ALLOCATION LENGTH (if required)9 (LSB)10 Reserved11 CONTROLTable 4 — Typical CDB for 16-byte commandsBitByte7 6 5 4 3 2 1 00 OPERATION CODE1 Reserved SERVICE ACTION (if required)2 (MSB)3LOGICAL BLOCK ADDRESS (if required)45 (LSB)6 (MSB)7Additional CDB data (if required)89 (LSB)10 (MSB)11TRANSFER LENGTH (if required)PARAMETER LIST LENGTH (if required)12ALLOCATION LENGTH (if required)13 (LSB)14 Reserved15 CONTROL14 dpANS SCSI Primary Commands - 2 (SPC-2)