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Bit
7
Byte
0
1
2
3
4
5
Bit
7
Byte
0
1
2
3
4
5
6
0
7
8
9
The meanings of each of the fields in the CDB are explained below. Depending on the type of
command, the basic format of the CDB, the definitions of fields and their meanings may
differ. Details are described in the specifications for each individual command in Chapter 3.
1 - 2
6
5
4
Operation Code
LUN
Logical Block Address
Logical Block Address (LSB)
Transfer Data Length
Control Byte
Fig. 1.1 6 Byte CDB Basic Format
6
5
4
Operation Code
LUN
0
Logical Block Address (MSB)
Logical Block Address
Logical Block Address
Logical Block Address (LSB)
0
0
0
Transfer Data Length (MSB)
Transfer Data Length (LSB)
Control Byte
Fig. 1.2 10 Byte CDB Basic Format
C141-E039-01EN
3
2
Logical Block Address (MSB)
3
2
0
0
0
0
1
0
1
0
0
0
0
0
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