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4-68 C156-E227-01EN
Table 4.90 Current/Maximum capacity descriptor
Bit
Byte
76543210
0-3 Number of Blocks
4 Reserved Descriptor Code
5-7 Block Length
Number of Blocks indicates the number of addressable blocks.
Descriptor Code indicates the type of descriptor to be reported to the host.
Block Length indicates the length of the block in bytes.
Table 4.91 Descriptor code definition
Descriptor Code Descriptor Type
00b Unformatted media (Other fields are ineffective.)
01b Unformatted media (Maximum format capacity)
10b Formatted media (Current media capacity)
11b No media loaded (Maximum format capacity)
4.6.13 READ DEFECT DATA command
Table 4.92 READ DEFECT DATA command
Bit
Byte
76543210
0 Operation Code (37h)
1 Logical Unit Number Reserved
2 Reserved Plist Glist Defect List Format
3-6 Reserved
7-8 Allocation Length
9-11 Reserved
The READ DEFECT DATA command transfers media defect data to the host.