12 read format capacities command – FUJITSU MCM3064AP User Manual
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4.6 Packet Commands
C156-E227-01EN
4-67
Table 4.86 READ CAPACITY data (PMI=1, PROM medium)
Bit
Byte
7
6
5
4
3
2
1
0
0-3
Last Logical Block Address for M0 area
4-7
Block Length in Bytes
4.6.12 READ FORMAT CAPACITIES command
Table 4.87 READ FORMAT CAPACITIES command
Bit
Byte
7
6
5
4
3
2
1
0
0
Operation Code (23h)
1
Logical Unit Number
Reserved
2-6
Reserved
7-8
Allocation Length
9-11
Reserved
The READ FORMAT CAPACITIES command transfers data on the capacity of
media currently loaded to the host. If no media is loaded, this command returns the
maximum capacity value of supported media to the host.
Table 4.88 READ FORMAT CAPACITIES data format
Bit
Byte
7
6
5
4
3
2
1
0
Capacity List Header
Current / Maximum Capacity Descriptor
Table 4.89 Capacity list header
Bit
Byte
7
6
5
4
3
2
1
0
0-2
Reserved
3
Capacity List Length (8h)
Capacity List Length indicates the length of the capacity descriptor in bytes.