Sony AIT-SDX460, Руководство по техническим характеристикам продукции

Страница: 153 / 192

WRITE BUFFER 7. ATAPI Packet Command Specification
SONY AIT-1Turbo drive SDX-460V series Ver.1.0 7-81
Data Mode – in this mode, the DATA TRANSFER contains buffer data only.
Buffer ID: The supported values are:
Buffer ID Description
0 Write Interface Buffer
1 Write Group Buffer
If an unsupported Buffer ID code is requested, the drive returns a CHECK CONDITION status with an ILLEGAL
REQUEST sense key.
Buffer Offset: The Buffer Offset field contains the byte offset within the specified buffer to which data shall be
transferred. The host should conform to the offset boundary requirements returned in the WRITE 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.
Parameter List Length: The Parameter List Length specifies the maximum number of bytes that will be
transferred during DATA TRANSFER. The host should attempt to ensure that the Parameter List Length does not
exceed the buffer capacity. If this does occur, the drive returns a CHECK CONDITION status with an ILLEGAL
REQUEST sense key set. The capacity of the buffer can be determined from the Buffer capacity field in the Read
Buffer descriptor. The Parameter List 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.