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(2)
VPD Information
When "1" is specified in the "EVPD" bits of the CDB, the VPD information described below
is transferred to the INIT by this command. The INIT specifies the type of VPD information
required in the "Page code" field of the CDB. The type of VPD information supported by the
IDD and its page code number are as shown below.
Page Code Page (Hex)
00
80
C0
Furthermore, if page codes other than those shown above (VPD information that is not
supported by the IDD) are specified in the CDB, that command is terminated with a CHECK
CONDITION status (ILLEGAL REQUEST [=5] / Invalid field in CBD [=24-00].
The format and contents of each type of VPD information are shown below.
a. Page Code List
This VPD information reports the page code list of VPD information supported by the IDD.
The format of this VPD information is shown in Fig. 3.2.
Bit
7
Byte
0
Qualifier
1
2
3
4
5
6
Figure 3.2
The values displayed in the "Qualifier" and "Device Type Code" fields in byte 0 are the
same as those in the previously mentioned standard INQUIRY data. The "Page code" field
in byte 1 indicates the page code (X '00') of this VPD information itself. Also, the "Page
length" field in byte 3 indicates the length (byte length) after byte 4. This value has no
relationship to the specification in the "Transfer Byte Length" in the CDB, but indicates
the length of this VPD information and is always X '03' (Total data length = 7 bytes).
Byte 4 and subsequent bytes list all the VPD information page codes supported by the
IDD, with the VPD page code indicated in ascending order in each byte.
3 - 8
Page code list of supported VPD information
Device Serial Number
Operation Mode
6
5
4
X'00' (Page Code)
X'00'
X'03' (Page Length)
X'00' (Page Code List)
X'80' (Device Serial No.)
X'C0' (Operation Mode)
VPD Information: VPD Identifier List
C141-E039-01EN
Function
3
2
1
Device Type Code
0
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