Hitachi C4K60 Specifications - Page 92

Security Erase Prepare [F3h], 5.30. Security Erase Unit [F4h]

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7.5.29. Security Erase Prepare [F3h] Task File Registers Command LBA High LBA Mid LBA Low Device/Head Sector Count Features 7 6 5 4 3 2 1 0 F6h XX XX XX X X X DRV X X X X XX XX The SECURITY ERASE PREPARE command shall be issued immediately before the SECURITY ERASE UNIT command to enable device erasing and unlocking. This command is to prevent accidental erasure of the device. Device returns Aborted command error if the device is in Frozen mode. 7.5.30. Security Erase Unit [F4h] Task File Registers Command LBA High LBA Mid LBA Low Device/Head Sector Count Features 7 6 5 4 3 2 1 0 F4h XX XX XX X X X DRV X X X X XX XX The SECURITY ERASE UNIT command requests a transfer of a single sector of data from the host. The following table defines the content of this sector of information. If the password does not match, then the device rejects the command with an Aborted error. Table 7.21 Password Data Format Word Contents 0 Control Word bit 15-1 Reserved bit 0 Identifier 0 = Compare user password, 1 = Compare master password 1-16 Password(32bytes) 17-255 Reserved K6610170 Rev.2 Dec 22, 2004 - 92 -

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K6610170
Rev.2
Dec 22, 2004
- 92 -
7.5.29. Security Erase Prepare [F3h]
Task File Registers
7
6
5
4
3
2
1
0
Command
F6h
LBA High
XX
LBA Mid
XX
LBA Low
XX
Device/Head
X
X
X
DRV
X
X
X
X
Sector Count
XX
Features
XX
The SECURITY ERASE PREPARE command shall be issued immediately before the SECURITY ERASE
UNIT command to enable device erasing and unlocking. This command is to prevent accidental erasure of
the device.
Device returns Aborted command error if the device is in Frozen mode.
7.5.30. Security Erase Unit [F4h]
Task File Registers
7
6
5
4
3
2
1
0
Command
F4h
LBA High
XX
LBA Mid
XX
LBA Low
XX
Device/Head
X
X
X
DRV
X
X
X
X
Sector Count
XX
Features
XX
The SECURITY ERASE UNIT command requests a transfer of a single sector of data from the host. The
following table defines the content of this sector of information. If the password does not match, then the
device rejects the command with an Aborted error.
Table 7.21 Password Data Format
Word
Contents
0
Control Word
bit 15-1
Reserved
bit 0
Identifier
0 = Compare user password, 1 = Compare master password
1-16
Password(32bytes)
17-255 Reserved