Fujitsu MAN3735 Manuale Utente
C141-E124-01EN
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3.1.7
MODE SENSE (1A)
Bit
Byte
Byte
7
6
5
4
3
2
1
0
0
X‘1A’
1
LUN
0
DBD
0
0
0
2
PC
Page Code
3
0
0
0
0
0
0
0
0
4
Transfer Byte Length
5
0
0
0
0
0
0
Flag
Link
This command reports the values for each type of parameter related to the disk drive's physical
attributes, data format, timing for SCSI bus disconnect and reconnect processing, error recovery
procedures, etc., as well as the attributes of those parameters, to the INIT.
attributes, data format, timing for SCSI bus disconnect and reconnect processing, error recovery
procedures, etc., as well as the attributes of those parameters, to the INIT.
The data (MODE SENSE data) transferred to the INIT from the IDD by this command are
configured from a "Header," "Block Descriptor" and one or more "Page descriptors" which
describe each type of parameter, each of which will be described later in this item.
configured from a "Header," "Block Descriptor" and one or more "Page descriptors" which
describe each type of parameter, each of which will be described later in this item.
When "1" is specified in the "DBD (disable block descriptors)" bit of CDB byte 1, it indicates that
a "Block descriptor" is not included in the MODE SENSE data transferred to the INIT by this
command and the IDD transfers MODE SENSE data composed from the "Header" and the
specified "Page descriptor" only to INIT. When "0" is specified in this bit, the IDD transfers
MODE SENSE DATA composed of the "Header, " a single "Block descriptor" and the specified
"Page descriptor" to the INIT.
a "Block descriptor" is not included in the MODE SENSE data transferred to the INIT by this
command and the IDD transfers MODE SENSE data composed from the "Header" and the
specified "Page descriptor" only to INIT. When "0" is specified in this bit, the IDD transfers
MODE SENSE DATA composed of the "Header, " a single "Block descriptor" and the specified
"Page descriptor" to the INIT.
The "Page code" field in CDB byte 2 specifies the page code of the "Page descriptor" transferred
to the INIT by this command. The types of "Page descriptor" supported by the IDD and their page
codes and lengths are as shown below.
to the INIT by this command. The types of "Page descriptor" supported by the IDD and their page
codes and lengths are as shown below.
Page Code
Page Descriptor Name
CCS
SCSI-2
SCSI-3
1
Read/Write Error Recovery Parameter
8 bytes
12 bytes
12 bytes
2
Disconnect/Reconnect Parameter
12 bytes
16 bytes
16 bytes
3
Format Parameter
24 bytes
24 bytes
24 bytes
4
Drive Parameter
20 bytes
24 bytes
24 bytes
7
Verify Error Recovery Parameter
12 bytes
12 bytes
12 bytes
8
Read Caching Parameter
20 bytes
20 bytes
20 bytes
A
Control Mode Parameter
12 bytes
12 bytes
12 bytes
C
Notch Parameter
24 bytes
24 bytes
24 bytes
1C
Information of exceptions control parameter
12 bytes
12 bytes
12 bytes
21
Additional Error Recovery Parameter
4 bytes
4 bytes
4 bytes
3F
All Page Descriptors Supported by the IDD
68 bytes
160 bytes
160 bytes