Read Capacity Command; Table 4.83 Read Capacity Command; Table 4.84 Read Capacity Data (Pmi=0); Table 4.85 Read Capacity Data (Pmi=1, Mo Media From Medium) - Fujitsu MCM3064AP Product Manual

Host Interface
When 0 is specified as Transfer Length, data is not transferred. The command
ends normally without executing Read processing.

4.6.11 READ CAPACITY command

Bit 7
Byte
0
1 Logical Unit Number
2-7
8
9-11
The READ CAPACITY command transfers data on the media capacity to the host.
Table 4.84 lists the data transferred if the Partial Medium Indicator (PMI) bit is 0.
Bit 7
Byte
0-3
4-7
Last Logical Block Address indicates the LBA of the last accessible block.
Block Length in Bytes indicates the number of bytes per block.
When the Partial Medium Indicator (PMI) bit is 1, the data to be transferred
depends on the type of media. Tables 4.85 and 4.86 list the data transferred for
two types of media.
Table 4.85 READ CAPACITY data (PMI=1, MO media, FROM medium)
Bit 7
Byte
0-3
4-7
4-66

Table 4.83 READ CAPACITY command

6 5
Operation Code (25h)
Reserved

Table 4.84 READ CAPACITY data (PMI=0)

6 5
Last Logical Block Address
Block Length in Bytes
6 5
Last Logical Block Address
Block Length in Bytes
4 3 2
Reserved
Reserved
Reserved
4 3 2
4 3 2
1 0
PMI
1 0
1 0
C156-E227-01EN