Maxtor ATLAS 10K III - Manual (Page 174)

SCSI Description
5-110 Maxtor Atlas 10K III
 4'#& %#2#%+6; %QOOCPF J
The READ CAPACITY command reports formatted capacity and track-boundary
information. The data format and field descriptions are shown in Table 5-131 and
Table 5-132 respectively.
Table 5-131 READ CAPACITY Command-Data Format
Table 5-132 READ CAPACITY Command-Field Descriptions
Table 5-133 shows the READ CAPACITY Returned Data - Data Format that will
be sent during the data-in buffer transfer for the command. Refer to the PMI
description in Table 5-132 for a description of these data fields.
Table 5-133 READ CAPACITY Returned Data-Data Format
$KV
$[VG
       
0 Operation Code (25h)
1 Reserved RelAdr
2 - 5 Logical Block Address
6 - 7 Reserved
8 Reserved PMI
9 Control
(KGNF &GUETKRVKQP
RelAdr
Relative Addressing is not supported by the drive; the field must
be 0.
Logical Block Address
Used in conjunction with the PMI bit. Must be 0 when the PMI bit
is 0.
PMI
Partial Media Indicator. When the value in the field is 0, the Re-
turned Logical Block Address (Table 5-133) is that of the last log-
ical sector of the logical unit.
When the value is 1, the Returned Logical Block Address is that
of the last sector on the same cylinder as the Logical Block Ad-
dress supplied in the Command Descriptor Block's LBA field. That
is, the Returned Logical Block Address is that of the Logical Block
Address before a substantial delay in data transfer will be encoun-
tered).
In either case, Block Length in Bytes (Table 5-133) is the unit's
logical sector size, as determined by the Block Length field in the
Mode parameter Block Descriptor.
$KV
$[VG
       
0 - 3 Returned Logical Block Address
4 - 7 Block Length in Bytes