Freecom FC TapeWare AIT-250i FC, Спецификация

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READ BUFFER 6.Command Specification
SONY AIT-E Turbo drive SDX-250V series Ver.1.0 6-55
Table 6-60: READ BUFFER Descriptor
Bit
Byte
7 6 5 4 3 2 1 0
0 Reserved
1 (MSB)
2 Buffer Capacity
3 (LSB)
Buffer ID: The supported values are:
Buffer ID Description
0
1 Read Interface Buffer
Read Group Buffer
If an unsupported Buffer ID code is requested, the drive returns a CHECK CONDITION status with an ILLEGAL
REQUEST sense key set.
Buffer Offset: The Buffer Offset field contains the byte offset within the specified buffer from which data shall be
transferred from. The initiator should conform to the offset boundary requirements returned in the READ BUFFER
descriptor. If the target is unable to accept the specified buffer offset, it shall return CHECK CONDITION status,
shall set the Sense Key to ILLEGAL REQUEST, and set the Additional Sense Code to ILLEGAL FIELD IN CDB.
Allocation Length: The Allocation Length specifies the maximum number of bytes that the initiator has allocated for
returned data. An Allocation Length of ZERO indicates that no data will be transferred. Any other value indicates the
maximum number of bytes that will be transferred. The drive terminates the DATA IN phase when Allocation Length
bytes of data have been transferred or when all available data has been transferred to the initiator, whichever is less.
The Allocation Length must be greater than four (except in data only mode), else the drive will return a CHECK
CONDITION status with an ILLEGAL REQUEST sense key set.