Sony DDS-4, Product Description Manual

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6 - 18 SONY SDT-10000/SDT-11000 DDS Tape Drive
6. COMMAND SPECIFICATION
Bit 7 6 5 4 3 2 1 0
Byte
0 Reserved Page Code
1 Reserved
2 (MSB)
Page Length (n-3)
3 (LSB)
Log Parameters (s)
4- Log Parameter (First)
x+3 (Length x)
•
•
•
n-y Log Parameter (Last)
n (Length y)
6. 06. 1 The Log Page Descriptor
The format of the log pages consists of zero or more variable-length parameter structures. Each page begins with a 4-
byte page header followed by zero or more variable-length parameter structures defined for that page. The Log Select
command supports the ability to send zero or more log pages. The LOG SENSE command returns a single log page as
specified in the Page Code field of the CDB.
Table 6-7: Log Page Format
Page code:
Identifies which page of data is being transferred. If the Page Code field value is reserved or not implemented by the
target, the target shall terminate the command with a CHECK CONDITION status. The sense key shall be set to
ILLEGAL REQUEST, and the additional sense code shall be set to INVALID FIELD IN PARAMETER LIST.
Page Length:
Defines the length, in bytes, of the following log parameters. This length does not include bytes zero through three.
A Page Length value that results in the truncation of any parameter shall cause the target to terminate the command
with CHECK CONDITION status. The sense key shall be set to ILLEGAL REQUEST and the additional sense
code shall be set to INVALID FIELD IN PARAMETER LIST.
LOG SENSE