Travelstar 5K80 Hard Disk Drive Specification
62
10.6 Device Register
Table 40: Device Head/Register
This register contains the device and head numbers.
Bit Definitions
10.7 Error Register
Table 41: Error Register
This register contains the status from the last command executed by the device or a diagnostic code. At the comple-
tion of any command except Execute Device Diagnostic, the contents of this register are always valid even if
ERR = 0 is in the Status Register.
Following a power on, a reset, or completion of an Execute Device Diagnostic command, this register contains a
diagnostic code. See Table 46: "Diagnostic codes," on page 70 for the definitions.
Bit Definitions
7
6
5
4
3
2
1
0
1
L
1
DRV
HS3
HS2
HS1
HS0
L
Binary encoded address mode select. When L = 0, addressing is by CHS mode. When L = 1,
addressing is by LBA mode.
DRV
Device. When DRV = 0, device 0 (Master) is selected. When DRV = 1, device 1 (Slave) is
selected.
HS3, HS2,
HS1, HS0
These contain bits 24-27 of the LBA. At command completion these bits are updated to reflect
the current LBA bits 24-27.
7
6
5
4
3
2
1
0
CRC
UNC
0
IDNF
0
ABRT
TK0N
AMN
ICRCE (CRC)
Interface CRC Error. When CRC = 1, it indicates that a CRC error has occurred on the data bus
during a Ultra DMA transfer.
UNC
Uncorrectable Data Error. When UNC = 1, it indicates that an uncorrectable data error has been
encountered.
IDNF (IDN)
ID Not Found. When IDN = 1, it indicates that the requested sector's ID field could not be found.
ABRT (ABT)
Aborted Command. When ABT = 1, it indicates that the requested command has been aborted due
to a device status error or an invalid parameter in an output register.
TK0NF (T0N)
Track 0 Not Found. When T0N = 1, it indicates that track 0 was not found during a recallibrate
command.
AMNF (AMN)
Address Mark Not Found. When AMN = 1, it indicates that the data address mark has not been
found after finding the correct ID field for the requested sector.
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