Fujitsu MAP3147NC - Enterprise - Hard Drive, Scsi Logical Interface Specifications

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3.3 Format Commands
C141-E167
3 - 89
PList GList Defect Data Type
1 1 P List and G List
1 0 P List only
0 1 G List only
0 0 4-byte header information only (described in this section)
Defect List Format Defect Data Format
0 0 0 Block Address Format
1 0 0 Byte Distance from the Index Format
1 0 1 Physical Sector Address Format
The “Transfer byte length” field in the CDB specifies the defect data length (number of bytes) that
can be received by the INIT. The IDD terminates data transfer when transfer of the length of defect
data specified in the “Transfer byte length” field is completed or when transfer of all the defect data
of the specified type is completed. Also, when zero is specified in the “Transfer byte length” field,
this command is terminated without execution of data transfer.
Figure 3.17 shows the format of defect data transferred to the INIT by this command.
Bit
Byte
7 6 5 4 3 2 1 0
0 X‘00’
1 0 0 0 PList GList Defect List Format
2 Defect List Length (MSB)
3 Defect List Length (LSB)
4
Defect Data
n
Figure 3.17 READ DEFECT DATA command: Defect data configuration
(1) Header
a. P List (primary list) bit
When this bit is “1,” it indicates that P List defect data are included in the defect descriptor list
that is actually transferred to the INIT. When it is “0,” it indicates that the P List defect data are
not included. See 3) of item (2).)
~
~
~
~
Header
Defect
Descriptor
List
~
~