Re Ad (08) - IBM DDRS-39130 - Ultrastar 9.1 GB Hard Drive Specifications

7.14 READ (08)
Byte
7 6
0
1 LUN
2
3
4
5 VU = 0
Figure 89. R E A D (08)
The READ command requests the file to transfer the specified number of blocks of data to the initiator
starting at the specified logical block address.
Logical block address This field specifies the logical unit at which the read operation shall begin.
Transfer length This field specifies the number of blocks to be transferred. A value of zero implies
256 blocks are to be transferred.
Note: Errors are handled by ERP(error recovery procedure). ERPs are controlled by the error recovery
parameters specified by M O D E SELECT command.
3 Block is 512 bytes in length.
120
O E M Spec. of DDRS-3xxxx
Bit
5 4 3
Command Code = 08h
(MSB)
Logical Block Address
Transfer Length
Reserved = 0
3
2 1 0
LBA
(LSB)
FLAG LINK