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12.21 Read Log Ext (2Fh)
This command returns the specified log to the host. The device shall interrupt for each DRQ block transferred.
Table 121 Read Log Ext Command (2Fh)
Command Input
Field
Description
FEATURE
If not defined by the log specified by the LOG ADDRESS
field, this field is reserved.
COUNT
LOG PAGE COUNT field
LBA
Bit
Description
47:40
Reserved
39:32
PAGE NUMBER field (15:8)
31:16
Reserved
15:8
PAGE NUMBER field (7:0)
7:0
LOG ADDRESS field
DEVICE
Bit Description
7 Obsolete
6 N/A
5 Obsolete
4 Transport Dependent
3:0 Reserved
Command
7:0 2Fh
Normal Outputs
See Normal Outputs in Section 12.8 Flush Cache Ext (EAh)
Error Outputs
Field
Description
ERROR
Bit Description
7 INTERFACE CRC bit
6 UNCORRECTABLE ERROR bit
5 Obsolete
4 ID NOT FOUND bit
3 Obsolete
2 ABORT bit
1:0 Obsolete
COUNT
Reserved
LBA
Reserved
DEVICE
Bit Description
7 Obsolete
6 N/A
5 Obsolete
4 Transport Dependent
3:0 Reserved
STATUS
Bit Description
7:6 Transport Dependent
5 DEVICE FAULT bit
4 N/A
3 Transport Dependent
2 N/A
1 SENSE DATA AVAILABLE bit
0 ERROR bit
192
Hard Disk Drive Specification