2 read data (mode 00010b) – Hitachi ULTRASTAR 15K450 HUS154530VLF400 User Manual
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Hitachi Ultrastar 15K450 (FC-AL) Hard Disk Drive Specification
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19.20.2 Read Data (Mode 00010b)
In this mode, the DATA IN phase contains buffer data.
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Buffer ID field must be set to zero, indicating the data transfer buffer. If another value is specified, the command is
terminated with Check Condition status. The drive shall set sense key to Illegal Request and additional sense code to
Illegal Field in CDB.
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Buffer Offset specifies the offset of the memory space specified by the Buffer ID. The Initiator should conform to the
offset boundary requirements returned in the READ BUFFER descriptor. If the value exceeds the buffer specified,
the command is terminated with Check Condition status. The drive shall set sense key to Illegal Request and addi-
tional sense code to Illegal Field in CDB.
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Allocation Length The drive terminates the DATA IN phase when allocation length bytes of data have been trans-
ferred or when the header and all available data have been transferred to the Initiator, whichever is less.