C.9 Soft ID Page (EEPROM) (3C
H
)
The Soft ID page is shown below. This table summarizes the function,
the default value and the changeability of each bit. This page is saved in
an EEPROM that has a life span of 10,000 writes.
Note. The write life span is 10,000 writes. To preserve the write life span
of the EEPROM, the page is not saved to the EEPROM during a
Mode Select command if the new parameters are the same as the
current contents in the EEPROM. When the write life cycle limit is
exceeded, the drive sets the sense key to hardware error and the
additional sense error code to C2
H
. The additional sense error
codes are described in Appendix B.3.
Bit
Byte
7
6
5
4
3
2
1
0
0
PS (1)
Page code (3C
H
)
1
Page length (01
H
)
2
Soft
ID
Soft
Parity
Param
enable
Soft
remote
Remote
S/S
ID 2 ID 1 ID 0
default
0
0
0
0
0
0
0
0
change-
able
1
1
1
1
1
1
1
1
Byte 2 When the
soft ID bit is 0, the drive ignores ID0, ID1 and ID2 and
uses the SCSI ID jumpers to determine the SCSI ID. When the
soft ID bit is 1, the drive ignores the SCSI ID jumpers and uses
ID0, ID1 and ID2 to determine the SCSI ID. See Figure 7 on page
25 for jumper settings.
When the
soft parity bit is 0, the drive uses the parity jumper
settings to determine whether the drive uses parity. When the
soft parity bit is 1, the drive ignores the parity jumper settings.
When the
soft remote bit is 0, the drive uses the remote start
jumper setting to determine whether remote start is imple-
mented. When the soft remote bit is 1, the drive ignores the
jumpers and uses the remote S/S bit to determine whether
remote start is implemented.
When the
remote S/S bit is 0, the drive spins up after a delay
specified by the spinup delay field (byte 4 of the Operating page,
00
H
). When the remote S/S bit is 1, the drive spins up when it
receives the Start Unit command. This bit is only valid if the soft
remote bit is 1.
The
ID0, ID1 and ID2 bits are the SCSI ID bits. These bits are
only valid when the soft ID bit is 1.
112
ST3655 Family SCSI Drives Product Manual, Rev. A
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