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READ BLOCK LIMITS 6.Command Specification
SONY AIT-3Ex drive SDX-800V series Ver.1.1 6-71
6.14. READ BLOCK LIMITS 05h
Bit
Byte
7 6 5 4 3 2 1 0
0 Operation Code (05h)
1 Obsolete Reserved
2 Reserved
3 Reserved
4 Reserved
5 Control
The READ BLOCK LIMITS command tells the drive to return its limits for Block Length. The READ BLOCK LIMITS
data shown below will be sent during the DATA IN phase of the command. The command does not reflect the
currently selected block size, only the available limits. MODE SENSE returns the current block size. 2 bytes is the
minimum and 8 Mbytes - 1 byte is the maximum block size which the unit can support.
Table 6-69: READ BLOCK LIMITS Data
Bit
Byte
7 6 5 4 3 2 1 0
0 Reserved Granularity(02h)
1 (MSB)
2 Maximum Block Length Limit (80 00 00h)
3 (LSB)
4 (MSB) Minimum Block Length Limit (00 02h)
5 (LSB)
GRANULARITY: This field indicates the block size granularity of the Logical Unit and the recording format. For this
Logical Unit, the value is 2, indicating a granularity of 2**GRANULARITY.
The maximum block length limit and minimum block length limit field values are shown in Table 6-69.