Fujitsu MCF3064AP Manual Do Utilizador
4 - 56
C156-E142-02EN
4.6.8
READ (10) command
Table 4.77 READ command
Bit
Byte
7
6
5
4
3
2
1
0
0
Operation Code (28h)
1
Logical Unit Number
Reserved
2-5
Logical Block Address
6
Reserved
7-8
Transfer Length
9-11
Reserved
The READ (10) command reads data for the specified number of blocks from the specified logical
block address and transfers it.
block address and transfers it.
Logical Block Address specifies the head logical block address used to start reading.
Transfer Length specifies the number of blocks to be read and transferred.
When Transfer Length is 0, the command does not carry out data transfer. It simply ends normally
without reading any data.
without reading any data.
4.6.9
READ (12) command
Table 4.78 READ command
Bit
Byte
7
6
5
4
3
2
1
0
0
Operation Code (A8h)
1
Logical Unit Number
Reserved
2-5
Logical Block Address
6-9
Transfer Length
10-11
Reserved
The READ (12) command reads data for the specified number of blocks from the specified logical
block address and transfers it.
block address and transfers it.
Logical Block Address specifies the head logical block address used to start reading.
Transfer Length specifies the number of blocks to be read and transferred.