
4.6 Packet Commands
Table 4.86 READ CAPACITY data (PMI=1, PROM medium)
Bit | 7 | 6 | 5 |
| 4 | 3 |
| 2 | 1 | 0 |
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| Last Logical Block Address for M0 area |
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| Block Length in Bytes |
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4.6.12 READ FORMAT CAPACITIES command
Table 4.87 READ FORMAT CAPACITIES command
Bit | 7 | 6 | 5 | 4 |
| 3 |
| 2 | 1 | 0 |
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0 |
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1 | Logical Unit Number |
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| Allocation Length |
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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 | 7 | 6 |
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| 2 | 1 | 0 |
Byte |
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| Capacity List Header |
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| Current / Maximum Capacity Descriptor |
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| Table 4.89 Capacity list header |
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Bit | 7 | 6 |
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| 2 | 1 | 0 |
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| Reserved |
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3 |
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| Capacity List Length (8h) |
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Capacity List Length indicates the length of the capacity descriptor in bytes.