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4.6 Packet Commands
C156-E205-01EN 4-61
Table 4.83 READ CAPACITY data
Bit
Byte
76543210
0-3 Last Logical Block Address
4-7 Block Length in Bytes
Last Block Address specifies LBA of the last accessible block.
Block Length in Bytes indicates the number of bytes per block.
4.6.11READ FORMAT CAPACITIES command
Table 4.84 READ FORMAT CAPACITIES command
Bit
Byte
76543210
0 Operation Code (23h)
1Reserved
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 4.85 READ FORMAT CAPACITIES data format
Bit
Byte
76543210
Capacity List Header
Current / Maximum Capacity Descriptor
Table 4.86 Capacity list header
Bit
Byte
76543210
0-2 Reserved
3 Capacity List Length (8h)