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READ BLOCK LIMITS 6.Command Specification
SONY AIT-5 drive SDX-1100V series Ver.1.0 6-69
6.14. READ BLOCK LIMITS 05h
Bit
Byte
7 6 5 4 3 2 1 0
0 Operation Code (05h)
1 Reserved
2 Reserved
3 Reserved
4 Reserved
5 Control
The READ BLOCK LIMITS command requests that the drive 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 byte is the maximum block size which the unit can support.
Table 6-71: 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 04h)
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 6-71.