Features Register; Sector Count Register; Sector Number Register; Status Register - Hitachi CinemaStar P7K500 Specifications

7.9 Error Register
7
ICRCE UNC

Table 44 Error Register

This register contains status from the last command executed by the device, or a diagnostic code.
At the completion of any command except Execute Device Diagnostic, the contents of this register are valid
always even if ERR=0 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 0 on page 65 for the definition.
Bit Definitions
ICRCE (CRC) Interface CRC Error. ICRCE=1 indicates a CRC error occurred during FIS transmission or
FIS reception.
UNC Uncorrectable Data Error. UNC=1 indicates an uncorrectable data error has been
encountered.
IDNF (IDN) ID Not Found. IDN=1 indicates the requested sector's ID field could not be found.
ABRT (ABT) Aborted Command. ABT=1 indicates 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. T0N=1 indicates track 0 was not found during a Recalibrate command.
AMNF (AMN)
Address Mark Not Found. This product does not report this error. This bit is always zero.

7.10 Features Register

This register is command specific. This is used with the Set Features command, SMART Function Set
command and Format Unit command.

7.11 Sector Count Register

This register contains the number of sectors of data requested to be transferred on a read or write operation
between the host and the device. If the value in the register is set to 0, a count of 256 sectors (in 28-bit
addressing) or 65,536 sectors (in 48-bit addressing) is specified.
If the register is zero at command completion, the command was successful. If not successfully completed,
the register contains the number of sectors which need to be transferred in order to complete the request.
The contents of the register are defined otherwise on some commands. These definitions are given in the
command descriptions.

7.12 Sector Number Register

This register contains the starting sector number for any disk data access for the subsequent command.
The sector number is from one to the maximum number of sectors per track.
In LBA mode, this register contains Bits 0-7. At the end of the command, this register is updated to reflect the
current LBA Bits 0-7.
When 48-bit commands are used, the "most recently written" content contains LBA Bits 0-7, and the
"previous content" contains Bits 24-31.

7.13 Status Register

HITACHI Deskstar & CinemaStar P7K500 Hard Disk Drive specification (Rev 1.1)
Error Register
6 5 4
0 IDNF
62
3 2 1
0 ABRT TK0NF
0
AMNF